How to write a hook for an essay
What Are Topic Sentences In Terms Of Essay Writing
Tuesday, August 25, 2020
Love And Hate Essays - Love, Emotions, Discrimination, Hatred
Love And Hate Generally, limits in feeling and reason don't frequently blend. I am accordingly wary of endeavoring to search over adoration or abhor with reason. My recourses are two: to (indeed, utilizing what reason I have) separate scholarly idea from feeling; and to apply as meager explanation as conceivable consistently to compose. It appears to be sensible (sorry) to expect that feeling and reason have nothing to do with one another. It likewise appears to be likely that one can't exist with the other. They appear to be fit for dwelling together inside a solitary individual, yet fall upon varying articles. Are not the things we love or abhor not the things we get it? Abhor: Hate is one of our responses to an absence of comprehension. We can't abhor what we comprehend. Loathe is our dissatisfaction at inability to appreciate. The more we comprehend something loathed, the more our scorn becomes pity or pity, or develops to a scorn of that which caused whatever it was that we didn't comprehend. In the last case, the scorn may increment with seeing, however the object of the scorn has moved. We are given a wide scope of ways for managing our scorn, from the selfless to the traditionalist. The altruists, wishing harmony without cultural disagreement, advise us to subdue our disdain and supplant it with affection, a way headed in the long run for emotive blast and breakdown. The polar way gives us a progression of littler blasts with guarantee of enthusiastic solidness because of steady ejection of malefic inclinations. Neither of these, or mixes thereof, are horribly gainful manners by which to manage abhor, as even the moderate ways manage the contempt just cursorily and wastefully. I see the main route around disdain being understanding. Endless supply of the object of scorn, one is either better prepared for the helpful expulsion of said article, cooly and soundly; or not, at this point envious of the expulsion. Either result is completely fulfilling benevolently. In the last case, one must acknowledge at the same time a bit of quietude for having been mixed up just as a touch of pride for having become more right. This leaves one sincerely adjusted. The disdain is not curbed, yet changed. The equivalent passionate vitality is essentially working in a diverse bearing. Upon the expulsion of the article, the contempt is given something to do in a positive way rather than essentially lashing out half-positioned and potentially erroneously. The procedure is essentially that of addressing: for what reason does this explicit circumstance exist?, and what should be possible to cause this circumstance not to exist?. Understand that similarly concerning each activity, there is an equivalent and inverse response; for each response, there is an equivalent and inverse reason; and that nothing is basically either cause or impact, yet everything is both. Love: Ask similar inquiries, would like to think not to discover answers, and try not to be baffled when you do. In the event that you discover comprehension of the object of love, it will never again be an object of affection, as adoration, comparatively to detest, is a response to an absence of comprehension. The quicker you discover answers, the more shallow the feeling. At the point when answers come as more inquiries, you have a genuine sign of the force and carefulness of the feeling, and there is greater likelyhood that when love at long last vanishes, through perception, it will be supplanted with deference and esteem which you will find extremely simple to let yourself know is something very similar. I am grieved in the event that it appears I have exhorted you to forms that decrease or pulverize feelings; I have not. Feelings, in opposition to wonderful suspicion, are not lasting, yet short lived (despite the fact that it is unquestionably not feasible for them to stay for spans surpassing a human lifetime). I accept that the best possible activity with feelings is to perfect them, not to either draw out or abbreviate their length, for one is stagnation and the other suppression.
Saturday, August 22, 2020
VB.NET Solution and Project Files sln and vbproj
VB.NET Solution and Project Files 'sln' and 'vbproj' The entire subject of ventures, arrangements, and the documents and apparatuses that control them is something that is only sometimes clarified. Tossing Food One of the large preferences of the way Microsoft has planned arrangements and undertakings is that a venture or arrangement is independent. An answer index and its substance can be moved, replicated, or erased in Windows Explorer. An entire group of developers can share one arrangement (.sln) record; an entire arrangement of undertakings can be a piece of a similar arrangement, and the settings and choices in that .sln document can apply to the entirety of the activities in it. Just a single arrangement can be open at once in Visual Studio, yet a great deal of tasks can be in that arrangement. The activities can even be in various dialects. You can show signs of improvement comprehension of exactly what an answer is by making a couple and taking a gander at the outcome. A Blank arrangement brings about a solitary organizer with only two records: the arrangement holder and the arrangement client alternatives. On the off chance that you utilize the default name, youll see: Include Privacy The fundamental explanation you can make a clear arrangement is to permit venture documents to be made autonomously and remembered for the arrangement. In enormous, complex frameworks, notwithstanding being a piece of a few arrangements, tasks can even be settled in pecking orders. The arrangement holder document, strangely, is one of only a handful scarcely any content setup records that isnt in XML. A clear arrangement contains these announcements: It should be XML... its sorted out simply like XML yet without the XML sentence structure. Since this is only a content document, its conceivable to alter it in a word processor like Notepad. For instance, you can change HideSolutionNode FALSE to TRUE and arrangement wont be appeared in Solution Explorer any longer. (The name in Visual Studio changes to Project Explorer as well.) Its fine to try different things with things like this as long as youre taking a shot at a carefully test venture. You ought to never change arrangement documents physically for a genuine framework except if you know precisely what youre doing, however its genuinely basic in cutting edge situations to refresh the .sln record straightforwardly as opposed to through Visual Studio. The .suo record is covered up and its a paired document so it cannot be altered like the .sln document. You will regularly just change this record utilizing the menu alternatives in Visual Studio. Climbing in unpredictability, look at a Windows Forms Application. Despite the fact that this may be the most rudimentary application, there are significantly more documents. Notwithstanding a .sln document, the Windows Forms Application layout additionally naturally makes a .vbproj record. In spite of the fact that the .sln and .vbproj documents regularly valuable, you may see that theyre not appeared in the Visual Studio Solution Explorer window, even with the Show All Files button clicked. On the off chance that you have to work with these documents legitimately, you need to do it outside of Visual Studio. Not all applications need a .vbproj document. For instance, on the off chance that you select New Web Site in Visual Studio, no .vbproj record will be made. Open the top level organizer in Windows for the Windows Forms Application and youll see the four records that Visual Studio doesnt appear. ssuming the default name once more, they are: The .sln and the .vbproj records can be valuable for troubleshooting troublesome issues. Theres no damage in taking a gander at them and these records mention to you what is truly going on in your code. As we have seen, you can likewise alter .sln and .vbproj records straightforwardly in spite of the fact that its normally an ill-conceived notion except if there is no other method to do what you need. Be that as it may, some of the time, there is no other way. For instance, if your PC is running in 64-piece mode, there isnt an approach to focus on a 32-piece CPU in VB.NET Express, for instance, to be perfect with the 32-piece Access Jet database motor. (Visual Studio gives a route in different forms), yet you can include the accompanying: To the elementspropertygroup.. .:l in the .vbproj records to take care of business. Both the .sln and .vbproj document types are regularly connected with Visual Studio in Windows. That implies that on the off chance that you double tap both of them, Visual Studio opens. On the off chance that you double tap an answer, the undertakings in the .sln document are opened. In the event that you double tap a .vbproj record and there is no .sln document (this occurs on the off chance that you add another undertaking to a current arrangement) at that point one is made for that venture.
Saturday, August 1, 2020
The Comprehensive Guide on How to write a Responsive Essay
The Comprehensive Guide on How to write a Responsive Essay A responsive essay is not an easy essay to write. The students considered it same as the other essay. They follow the same steps on how to write an essay. But writing a responsive essay is quite different. Here we are going to show you the most effective steps on how to write a responsive essay. Lets start What is a Response Essay? Summary What is a Response Essay?Steps on How to Write a Responsive EssayStep-1 Read CarefullyStart By Reading Introduction, Not AbstractIdentify the Big QuestionRead the Result SectionFinal ReadingStep-2. The First ParagraphStep-3. Stating Your OpinionStep-4. Final FormatIntroductionBodyConclusionLets Sum Up A response essay also different from formal writing because it contained the use of the phrase I, such as I thought, I believe, etc. The use of I also a key significant point of this essay that made it different from other formal writing. When you write an essay on a book or article, then read for a class, and it describes the professional or impersonal voice, but when we write a response essay, the rules changed. It provides an opinion upon the article or book that is read by you. The opinion or thought contained your vision. It also depends upon you what you thought or experienced. It also considered a personal reflection on the matter. Steps on How to Write a Responsive Essay Step-1 Read Carefully Before writing a response essay, first of all, read the article carefully, understand what is and what the concept of the article. Highlight the major points of the article and consider or make an analysis of the article. In your mind, analyze the article widely and try to consider everything. After becoming well aware of the concept of the article, try to make thought analysis in your mind then also effort to explain them briefly. Start By Reading Introduction, Not Abstract You must start reading the article from the part of the introduction rather than the abstract. Most of the students start reading from the abstract that is also a big mistake of the reader. Because the abstract contained some information on the whole article, and it also depends upon the authors results after reading the article. Identify the Big Question What concerned the paper and identify what the major question is and what problem or issue efforts to solve by the entire article or paper. These are the major facts that defined why the article was written. Read the Result Section You must read the result section of the article carefully to write an excellent response essay. The result section contained the whole over outcomes of the result that helps to provide an excellent reflection on the paper. You need to summarize the results of each experiment in a very brief manner. Final Reading In the end, you must go to the abstract and read it appropriately. It helps you to provide a significant belief or thought in the response essay. Step-2. The First Paragraph After developing the outline of the paper, you must create the beginning draft for the essay. The first paragraph should contain a strong introductory sentence structure as well as a strong sense. In the area of a response essay, the beginning part should involve the title of the work and the name of the author. The first paragraph in the last sentence must contain this statement of the essay. The statement provides the overall thought or idea of the research very clearly. Step-3. Stating Your Opinion When starting your opening, dont need to be shy; make everything confidently. Even though it may look as peculiar to write, I thought, or I believe. Step-4. Final Format Introduction Part of the introduction also a significant or beginning part of the essay in which you must make an effort to grab the attention of the reader. The part of the introduction contained only one to two paragraphs. Body The part of the body contained three or more paragraphsThe part of the body summarizes the whole matter.What you considered or understood about the article, do you agree with the concept of the article if yes, then why? If not, why not?How does the article associate with you?What do you understand about how the article was written? Conclusion Provide a final decision or judgment on the article and also link it with the introduction. Lets Sum Up From the above steps, it may become quite easy for you to write the responsive essay. This guide will help you a lot when you are going to write a responsive essay. Furthermore, if you are still finding it difficult to write a responsive essay. Then we are here to provide you the best essay writing help and essay writing services at a nominal charge.
Friday, May 22, 2020
Military Life vs Civilian Life - 787 Words
Military Life vs. Civilian Life When we think about the military these days, normally the first thing that comes to mind is war. However, when we think about the civilian world the one thing that stands out is freedom. As a result, in order to maintain that freedom we must have our military go out and fight wars. There are many differences between our military and the civilian life; nonetheless, similarities do exist. A few that will be discussed pertaining to military and civilian life are how soldiers and civilian personnel are accounted for, their different clothing and their rank structure. In the military, specifically the Navy, personnel are accounted by a process called mustering. At exactly seven oââ¬â¢clock in the morning; youâ⬠¦show more contentâ⬠¦For the majority, vacation time is granted and will include long periods. For many in the civilian world vacation is paid and for many itââ¬â¢s not. However, for the military any leave period is always paid for. There are many differences and similarities the military and civilians have in life. In here we discussed a few of the many that are out there. We discussed the differences in accountability, uniforms in both the military and civilian sector, the rank structure and even vacation time or as the military call it, leave. We notice the civilian life is a lot more relaxed and we can tell freedom does exist and is very noticeable. Furthermore, we also notice that military life is a lot more demanding. All in all if we didnââ¬â¢t have a civilian world we would not require a military. And if we had no military we would not haveShow MoreRelatedCivilian Life vs. Military Life Essay1053 Words à |à 5 Pageshuge differences compared to being in the civilian life. There are many differences and there are some things that are the same, being in the Army and being in civilian life. The average day for a US Army Soldier consists of waking up at 0400 hours in the morning being to first formation; accountability formation by 0630 hours. Then from 0630 to 0730 hours a Soldier will do Physical Readiness training (PRT), wear as the average wake up time for a civilian would be around 0630 to 0700 hours. The SoldierRead MoreMilitary Vs. Civilian Life1270 Words à |à 6 PagesMany civilians end up thanking veterans for their service without knowing how their lives actually differ. Military life can offer many differences that civilian life cannot. Having lived both lives, I have an inside perspective on the differences between the two. These differences can include laws, regulations, and the different types of punishment one may receive. Although, everything between the two may seem different, there is also a similarity. That similarity, is encountering the same personalityRead MoreEssay about Military vs Civilian Life723 Words à |à 3 Pagesjoined the military would my life be different?â⬠Now when people think of the military they think of going to war and getting yelled at, but there are so many differences between military life and civilian. Most people sometimes believe that military life and civilian life are the same. Now there are a lot of differences their occupational life, living expense and some the freedoms they have. Occupational life is an example of differences between military and civilian life. In civilian life, you haveRead MoreSubstance Abuse and Mental Health Treatment Barriers: Military Life vs. Civilian Life1259 Words à |à 6 PagesSubstance Abuse and Mental Health Treatment Barriers: Military Life vs. Civilian Life Marina Herrera Butte College Abstract This paper explores the interesting relationship between substance abuse and mental health problems among military and civilian life. As well as stigma barriers to treatment within a military vs. a civilian setting. The article ââ¬Å"Substance Abuse and Mental Health Treatment in the Military: Lessons Learned and a Way Forwardâ⬠written by Katie Witkiewitz and ArmandoRead MoreA Brief Look at Igor Sikorsky1157 Words à |à 5 PagesIgor Sikorsky widened the field of aviation throughout his life with inventions that caught the interest of the world. In the early 1920ââ¬â¢s, after successfully building a four-engine biplane, Sikorsky began his work on amphibian aircraft. The aircraft proved to be versatile with its ability to take off and land on an airstrip or in the water. Sikorsky increased the size and maximum range of his designs until producing the S-42 Flying Clipper. His line of amphibian planes became the precursor to commercialRead MoreAgent Orange : A Herbicide Mix ture Used By The Us Military During The Vietnam War Essay1350 Words à |à 6 PagesAgent Orange is a herbicide mixture used by the US military during the Vietnam War. (Agent Orange Vietnam War History). The Department of defense advance project (DARPA) had an important role in the U.S development of herbicides as a military weapon (usa.gov). The first large scale defoliation by the US military took place in Fort Drum using a chemical called agent purple and a spray system that was the model for the one used in Vietnam (Buckingham). The use of chemicals in war is considered biologicalRead MoreThe Invisible War1662 Words à |à 7 PagesInvisible War, many of the service members were treated as though their attire (short skirts, running shorts, etc.), behavior, and alcohol consumption encouraged the sexual assault attacks and sexual harassment they endured during their service in the military. Also known as ââ¬Å"victim blamingâ⬠, this form of blaming often occurs because perp etrators do not want to be held culpable for their wrongdoing. It also may be used as a way to take the blame off the wrongdoer and displace it onto the victim. InRead MoreCyber Attack And Cyber Attacks958 Words à |à 4 Pagesattacks (JOAC, i), extrapolation to an era of cyberwar is unjustified as cyber attacks alone do not constitute an act of war and cyberspace should not be considered in isolation in regard to war. Increasing dependence on cyberspace for U.S. civilian and military systems and networks, combined with the ability for remote access to attack without overt exposure of the attackerââ¬â¢s identity or organization, make cyber attacks an attractive means against a stronger opponent. However, an act of war hasRead MoreUnited States Department Of State1748 Words à |à 7 Pagestheir definitions, it is possible to get a better grasp of the concept and which organizations fit the description.à Professor Kydd defines terrorism as ââ¬Å"politically motivated violence, usually targeted at civilians by non-state actors, but sometimes by states and sometimes towards non-civilians,â⬠(Kydd 9/7). Kidd specifies that this violence is directed toward people, not property, does not usually involve economic motivation, is usually by a state-actor, and is performed for a broad audience inRead MoreGun Control Amendment990 Words à |à 4 Pagesrecent incident, several others in past few years, has spark the debate over gun control in the United States. More and more are calling for a complete ban for assault type of weapons, that to include fully automatic and semi ââ¬âautomatic weapons with military attachments and features. In the light of the recent surge of incident involving guns, particularly assault type weapons has call for a ban. That has created an outrage from the advocates of gun owners and the (NRA) National Rifle Association. However
Sunday, May 10, 2020
Women s Fight For Equality - 991 Words
Womenââ¬â¢s fight for equality has been fought for over a century. They have out lasted the longest of wars. The fight for equality seems like an epic battle out of a movie, as it is so drawn out. The history behind the feminist movement is rich in context. For most people when they think of the feminist movement they think of United States or Europe. But this movement is not just contained in those countries, it was a global movement that has spread like falling dominos. The Inter-American Commission of Women was one of the organization to pop up from this movement and has greatly impacted the Latin American women. The IACW was created in Havana, Cuba in 1928. ââ¬Å"After a month of protests and active campaigning, the women were finally allowed a voice at the conference. For the first time women officially spoke at a plenary and public session of a Pan American conference. To hear the first speeches, more that a thousand women filled the galleries, staircases, and the conference floor of the University of Havana s great hall. Although the Treaty for Equal Rights was not ratified, the decision was taken to create the Inter-American Commission of Women (CIM) and to charge it with conducting a study of the legal status of women in the Americas, which would be presented to the next International Conference of American Statesâ⬠(OAS.org) This was there was of getting their foot in the door. Latin American governments could no longer just brush the women aside so easily. The formationShow MoreRelatedWomen s Fight For Equality1410 Words à |à 6 PagesWomenââ¬â¢s fight to achieve equality w as, and still is, a long and hard battle. Earning the right to vote in 1920, although no small task, only marked what is considered to be the beginning. The women who pushed for their rights in the mid-1800s were not thought to be respectable or proper at the time, much like the more politically active feminists of today. Fortunately, many preferred to fight for their rights rather than be considered proper. Though the achievement of suffrage is considered theRead MoreWomen s Fight For Equality1617 Words à |à 7 Pages Since the beginning of American history, women have been viewed as second-hand citizens to their male counterparts. From womenââ¬â¢s suffrage to fighting for equal pay and representation in the workplace, womenââ¬â¢s rights have been a prevalent and impactful part of our history. Both ââ¬Å"Emoji Feminismâ⬠(text A) and ââ¬Å"Suffragettes in the Cityâ⬠(text B) focus on issues associated with womenââ¬â¢s fight for equality and share a common purpose and audience, but they also differ in many ways. Text A, an opinion pieceRead MoreWomen s Fight For Equality1529 Words à |à 7 PagesIn the United States, women have been fighting for equality across all areas of society and have come a long way since the Seneca Falls Convention. The fight for equality has helped women gain the right to vote, to break into professions such as the healthcare field and even to being elected to government offices. There are some very interesting questions about the integration of wome n that havenââ¬â¢t been fully answered. The one that sticks out to me is will women be granted the right to enlist inRead MoreWomen s Rights Is The Fight For Equality1083 Words à |à 5 PagesWomenââ¬â¢s rights is the fight for the idea that women should have equal rights with men. Over history, this has taken the form of gaining property rights, the womenââ¬â¢s suffrage, or the right of women to vote, reproductive rights, and the right to work for for equal pay. Women were conditioned to be treated like second class citizens solely because of their gender until a crucial movement in American history during the late nineteenth century that would inspire a long fight for equality for generations toRead MoreJane Eyre : A Fight For Women s Equality1749 Words à |à 7 Pages Jane Eyre: A Fight for Womenââ¬â¢s Equality Feminism: the doctrine advocating social, political, and all other rights of women equal to those of men (dictionary.com). Throughout history, women have fought for and struggled with gaining full and absolute equality in society--which has proven to be difficult in the long-cultivated patriarchal society that we still live in today. In modern times, women continue to be paid less than men, are vastly underrepresented, and face many forms of violence aroundRead MorePatriarchy And Gendered Inequality?1421 Words à |à 6 PagesDo you agree that feminism remains a highly relevant ideology in its challenge to patriarchy and gendered inequality? The aim of this essay is to present some very important aspects of feminism as an ideology and its importance in today s world. It is commonly believed, that feminism is no longer needed and should be considered as successfully completed movement. However, there are many misinterpretations of this ideology, which should be corrected in order to fully understand its prime postulatesRead MoreFeminism, The Advocacy Of Women s Rights On The Basis Of Equality1141 Words à |à 5 PagesFeminism is defined as the advocacy of women s rights on the basis of the equality of the sexes. Throughout the hundreds of years women have been around there have always been those that fought for more. From fighting for the right to vote to marching down Capitol Hill women have been fighting for equality. Although the fight may have changed over the years these individuals have always fought for the better for people around the world. Now more than ever women are critiqued for contribution to feminismRead MoreGender Inequality By Emma Watson1325 Words à |à 6 Pages ââ¬Å"There s nothing wrong with being afraid. It s not the absence of fear, itââ¬â¢s overcoming it. Sometimes you ve got to blast through and have faith.â⬠(Emma Watson) Gender inequality is a problem that people face in everyday life, whether it comes in the form of gender stereotypes or a pay difference, itââ¬â¢s something everyone deals with. As a UN Global Goodwill Ambassador, Emma Watson is striving to abolish gender inequality around the world. She is working with the program HeForShe to make genderRead MoreWomen s Rights During The 19th Amendment1414 Words à |à 6 Pages4 states gave women the right to vote. The western states gave women the right to vote so that more people could come to their states. The women suffrage was run by strong women. Two of the women were Susan B. Anthony and Elizabeth Cady. The women got the right to vote because they have been fighting for their rights since 1775, women were striking for their rights at their job to so that they can be equal as men, the womenââ¬â¢s right convention that opened the new possibility for women, and the 4 statesRead MoreThe On The Battlefield Of Equality1625 Words à |à 7 P ages On the Battlefield of Equality As Marilyn Monroe once said, A wise girl knows her limits. A smart girl knows she has none. The nineteen-twenties in America was a time filled with cultural, social, and political boom. This decade, later called the roaring twenties laid the foundation of many concepts and ideas still in use in America today, including automobiles, literature, music, and patriotism. Women in the 1920s overcame the battle of obtaining suffrage and the advancement of birth control;
Wednesday, May 6, 2020
Detection of Backlash Phenomena in the Induction Motor Free Essays
The problem our thesis work will solve is to reduce backlash in the induction motor. Backlash is described as a mechanical form of dead band that can lead to error on hole location, if the motion required to machine the holes causes a reversal in axis direction it also lead to loses of motion between input and output shafts, making it difficult to achieve accurate center in equipment such as machines tools etc. The main problem are vibrations from motor as a result of high ripple torque in the motor. We will write a custom essay sample on Detection of Backlash Phenomena in the Induction Motor or any similar topic only for you Order Now The motor is a kind of an AC machine in which alternating current is supplied to the stator directly and to the rotor by induction from the stator. Induction motor can appear in a single phase or a poly phase. (Toufouti, et al, 2013). In construction, the motor has a stator which is the stationary portion consisting of a frame that houses the magnetically active angular cylindrical structure called the stator lamination. It stack punched from electrical steel sheet with a three phase winding sets embedded in evenly spaced internal slots. The rotor which is the rotatory parts of a motor is made up of a shaft and cylindrical structure called the rotor lamination. It stack punched from electrical steel sheet with evenly spaced slots located around the periphery to accept the conductors of the rotor winding (Ndubisi, 2006). The rotor can be a wound type or squirrel cage type. in a poly phase motor, the three phase windings are displaced from each other by 120 electrical degrees in space around the air-gap circumference when excited from a balanced poly phase source, those windings (stator winding) will produce a magnetic field in the air-gap rotating at synchronous speed as determine by the number of stator poles and the applied stator frequency (Bimal, 2011). In the controlling of electrical motor; the introduction of micro-controllers and high switching frequency semiconductor devices, variable speed actuators where dominated by DC motors. Today, using modern high switching frequency power converters controlled by micro-controllers, the frequency phase and magnitude of the input to an AC motor can be changed and hence the motorââ¬â¢s speed and torque can be controlled. AC motors combined with their drives have replaced DC motors in industrial applications because they are cheaper, better reliability, less in weight, and lower maintenance requirement. Squirrel cage induction motors are most generally used than all the rest of the electric motors as they have all the advantages of AC motors and they are easy to build. The main advantage is that motors do not require an electrical connection between stationary and rotating portion of the motor. Therefore, they do not need any mechanical commutators to the fact that they are maintenance free motors. The motors also have lesser weight and inertia, high efficiency and high over load capability. Therefore, they are cheaper and more robust, and less proves to any failure at high speeds. Furthermore, the motor can be used to work in explosive environments because no sparks are produced. Taking into account all the advantages outlined above, induction motors must be considered as the perfect electrical to mechanical energy converter. However, mechanical energy is more than often required at variable speeds, where the speed control system is not a trivial matter. The effective way of producing an infinitely variable motor speed drive is to supply the motor with three phase voltage of variable amplitude. A variable frequency is required because the rotor speed depends on the speed of the rotating magnetic field provided by the stator. A variable voltage is required because the motor impedance reduces at low frequencies and the current has to be limited by means of reducing the supply voltage. (Schauder, 2013). Before the days of power electronics, a limited speed control of the motors was achieved by switching the three stator windings from delta connection to star connection, allowing the voltage at the motor windings to be reduced. Induction motors also available with more than three stator windings to allow a change of the number of pole pairs. However, a motor with several windings is very costly because more than three connections to the motor are needed and only certain discrete speeds are available. Another method of speed control can be realized by means of a wound rotor induction motor, where the rotor winding ends are brought out to slip rings (Malik, 2013). However, this method obviously removes the main aim of induction motors and it also introduces additional losses by connecting resistor or reactance in series with the stator windings of the motors, poor performance is achieved. With the enormous advances in converters technology and the development of complex and robust control algorithms, considerable research effort is devoted for developing optimal techniques of speed control for the machines. The motor control has traditionally been achieved using field oriented control (FOC). The method involves the transformation of stator currents in such a manner that is in line with one of the stator fluxes. The torque and flux producing components of the stator currents are decoupled, such that the component of the stator current controlling the rotor flux magnitude and the component controls the output torque will differ (Kazmier and Giuseppe, 2013). The implementation of this system however is complicated. The FOC is also well known to be highly sensitive to parameter variations. It also based on accurate parameter identification to obtain the needed performance. Another motor control techniques is the sensor less vector control. This control method is only for both high and low speed range. Using the method, the stator terminal voltages and currents estimate the rotor angular speed, slip angular speed and the rotor flux. In this case, around zero speed, the slip angular velocity estimation becomes very difficult. Motivation for the work When we were on training in machine in our office, we are told gave us a drawing to produce a machine shaft. During the process, when we feed in a cut of 10mm to the machine, it would cut 9.5mm and when we wanted to drill a hole at the center of the job, it would drilled it off centered, we called on our supervisor after we have wasted much time, power and materials. Surprisingly, after his supervision, he told us that backlash in the machine is responsible for that and he instructed us to use another machine which we did and got what we need immediately. Therefore, that ugly experience motivated us to research on how to reduce high ripple torque in induction motor which is the main causes of vibrations that lead to the backlash in the industrial machine. Statement of the Problem The statement of the human problem our research work will solve is to reduce backlash in industrial machine. Explanation of the problem Backlash Backlash can be defined as the maximum distance or angle through which any part of a mechanical system may be moved in one direction without applying appreciable force or motion to the next part in mechanical sequence and is a mechanical form of dead band. More so, it is any non-movement that occurs during axis reversals. For instance, when x ââ¬â axis is commanded to move one inch in the positive direction, immediately, after this x ââ¬â axis movement, these x-axis is also commanded to move one inch in the negative direction if any backlash exists in the x-axis, then it will not immediately start moving in the negative direction and the motion departure will not be precisely one inch. So, it can cause positioning error on holes location, if the motion required to drill the holes causes a reversal in axis direction, it also causes loses ofmotion between reducer input and output shafts, making it difficult to achieve accurate positioning in equipment such as machines tools etc. The main cause of this problem electrically is vibrations from electric motor as a result of high ripple torque in the induction motor. Benefits of solving the problem à High quality products will be produce. Productivity will increase because adjustment and readjustment of machine feeding handle or feeding screw to eliminate backlash have been reduced. Operational cost will reduced. Greater efficiency will be guaranteed. Greater accuracy and precision of product will be guaranteed. Wasting of materials will be highly reduced. Research Objectives To develop a model that will control the error to achieve stability using DTC and fuzzy logic with duty ratio. To determine the error in the torque of the machine that causes vibration which lead to backlash that result in production of less standard products. à To determine the position of the stator flux linkage space vector in the poles of the induction motor. To determine the stator linkage flux error in the induction motor that also causes vibration. To simulate the model above in the Simulink environment and validate the result. à Scope and Limitation of the Work This project work is limited to the use of fuzzy logic controller with duty ratio to replace the torque and stator flux hysteresis controllers in the conventional DTC techniques. The controllers have three variable inputs, the stator flux error, electromagnetic torque error and position of stator flux linkage vector. The inference method used was the Mamdam fuzzy logic inference system. The deffuzzification method adopted in this work is the maximum criteria method. Significance of the Work The importance of this work in industry where induction motor drives are mainly in application cannot be over emphasis. As earlier noted, induction motors because of their ruggedness simple mechanical structure and easy maintenance; electrical drives in industries are mostly based on them. Also, a wide range of induction motor applications require variable speed, therefore induction motor speed, if not accurately estimated will affect the efficiency of the overall industrial processes. Equally, the harmonic losses if not put in check will shorten the life span and efficiency of the motor inverter. Based on the above, it is aimed at reducing the principle causes of the inefficiency in the DTC induction motor and improves the performance of the system. Organization of the Work The work is organized into five chapters. Various control techniques were discussed in chapter two, in chapter three, we discusses the methodology, design and implementation of the direct torque control of induction motor using fuzzy logic with duty ratio controller. Chapter four discusses data collection, analysis and the simulated results showing the system using conventional method of control and the proposed fuzzy logic with duty ratio method of control under applied load torque conditions. How to cite Detection of Backlash Phenomena in the Induction Motor, Papers
Thursday, April 30, 2020
Organization and Environmental Analysis free essay sample
Huawei Technologies technical diversification of its portfolio and value addition to its existing products is highlighted by Huawei being ranked amongst the top 5 in the world in terms of essential UMTS patents. By June 2008, Huawei had filed 30,569 patent applications. (Huawei Corporate Information-Huawei Media release). The big inclination towards RD and strong cost differentiation has enabled Huawei Technologies to achieve what the other dominant players in the telecom industry have been struggling to achieve- customization! .This strong customer focus is also the face of Huawei Technologies projected through its brand logo. The Huawei Technologies brand logo reflects its core principles of ââ¬Å"customer-focus, innovation, steady and sustainable growth, and harmony, conveying Huawei Technologies sincere commitment to helping its customers realizing their potential to launch a variety of competitive services through continuous innovation and an enterprising spirit. â⬠(Huawei Corporate Information-Huawei Media release). The Huawei Technologies logo was recently changed and modified to reflect harmony as also one of its key elements, so as to convey its social responsibility. We will write a custom essay sample on Organization and Environmental Analysis or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Huawei Corporate Information-Huawei Media release). This has brought in the much needed image change required by Huawei Technologies primarily being seen as a Chinese vendor. Figure1: Huawei Contract Sales (Source Huawei Corporate Information-Huawei Media release) Opex Capex leverage which Huawei Technologies has been able to offer its customers has enabled it to demonstrate cost leadership which is evident as 72% of its contract sales were from overseas market in 2007. Let alone in 2007, it had 45% increases in its contract sales revenue. See figure 1. Huawei Corporate Information-Huawei Media release). The strong hold which Huawei Technologies is being able to maintain also comes from the socio-political environment it works in as the labour cost in China is one sixth of that of United States or Europe. Thus it has become a key external environmental factor . Internally Huawei Technologies has capitalized on human resource and RD. But has the cost differentiation been enough, wil l it still promise growth and more market share? These are the biggest questions which need to be addressed for a guaranteed continuous growth. This question has made Huawei Technologies rethink its marketing strategy towards value proposition, and to value chain analysis (Porter 1985) for a bigger market share. Before that however lies another hurdle of poor quality perception a question mark on the quality of Chinese branding. Issue 2- The dragon brand wagon. With the FMCG market taking blows after blows because of adulterated Chinese raw materials, the general consumer perception on Chinese quality is struggling to establish a stand. Though it specifically affects as said the FMCG market or the business dealing in B2C but the general perception affects all including B2B. And this has been one of the prime challenges. From 1998 to 2001 Huawei was looked at with distrust doubt . With the Cisco lawsuit the market penetration in the developed economies had become more difficult and required 1000 times more effort as compared to its American or European counterparts. (The Economist, Nov 2007). I believe that the focus needs to be shifted towards creating a strong brand if Huawei Technologies needs to keep its foothold in the global telecom market. Thus strengthening of the Huawei brand has become even more important. Remodeling to establish Huawei as a brand has been now the new focus to develop a better perceived quality create brand equity. The need of brand recognition has also become very vital to be seen as a valued collaborator for its customers. Brand development has never been big in China; with large volume market brand recognition never existed in the Chinese market. Hence it becomes more essential as well as difficult for Huawei to develop its brand image to compete in the global economy. The strong need for branding and change for the marketing orientation to move towards the service sector becomes more vital when we look into the 5Cââ¬â¢s of Huawei Technologies. Issue 4- The 5Cââ¬â¢s. Exploring the 5 Cââ¬â¢s of Huawei Technologies highlights the core competencies of Huawei and helps us in understanding why a new orientation approach is required . As discussed earlier Huawei Technologies dominates in cost differentiation and is armed with a strong RD to achieve customization in a high barrier industry and it has been a key strength of Huawei Technologies. But a quick SWOT analysis brings out the lack of perceived quality in the market as one of the greatest threats Huawei Technologies faces. Its major competitor Ericsson currently leading the market share comes with a very strong branding and high perceived quality. The dilemma is not just the market perception but also the perception of the employees themselves despite the fact that human capital is a key resource strength of Huawei Technologies which also drives to low labor costs.
Subscribe to:
Posts (Atom)