MATLAB Dynamics & Control Assignment Example | Topics and Well Written Essays - 4500 words

MATLAB Dynamics & Control - Assignment Example Furthermore, both the time constant and dead time vary with the size of the step-change. The process gain is affected but it is affected only in half of the cases (see Concentration A, see below). †¢ Select a set of dynamic process constants resulting from one of the step-changes that you have tested, and use these to calculate initial values for the constants in each of the three different controller equations (P, PI & PID). Proportional control: It is simple, provides rapid adjustment of the manipulated variable (MV). Does not provide zero offset, although the error is reduced (E>0). It increase speeds in the dynamic response. It can cause instability if improperly tuned. Integral control: It is simple, achieves zero offset (E=0). It provides adjusts the manipulated variable (MV) in a slower manner than the proportional mode –this can lead to poor dynamic performance. It can cause instability if improperly tuned. Derivative control: It is simple. It does not influence the final steady-state value of the error (E). It provides rapid correction based on the rate of change of the controlled variable (CV). It can cause undesirable high-frequency variation in the manipulated variable (MV). †¢ Once you have chosen your optimal control scheme, justify why you have selected it. You can use various methods of assessing controller performance in order to reach your decision: rise time, peak overshoot ratio, decay ratio, settling time, IAE, ISE, ITAE. You are not expected to use all of these, but at least two should be used and compared with each other in relation to optimizing your controller constants. †¢ Test your control loop for its ability to cope with a disturbance (e.g. in the concentration of feed chemical, or the temperature of the cooling water), and also for its ability to move the process to a new operating region by making a step-change to the set-point (i.e.

The Establishment of the Electoral College Essay -- essays research pa

The Electoral College is the system established by the Founding Fathers to select the President of the United States. It is important that Americans have a fundamental knowledge of this system, and the obstacles overcame in its development. There were many obstacles faced by the Founding Fathers while constructing the government. America was comprised of 13 states that wanted to protect their individual rights and leery of a strong centralized government. The nation’s population lay across a vast area with limited communication capabilities. In addition, the Founders believed that a true gentleman should not campaign for office. â€Å"The office should seek the man, the man should not seek the office† was the saying. They challenged themselves with overcoming these and other obstacles in order to produce a system that would provide a stable and powerful executive branch of government.   Ã‚  Ã‚  Ã‚  Ã‚  The Constitutional Congress set out to develop a way to select the president. One idea proposed was to have Congress elect the president. Some felt that this procedure would invite political bargaining and corruption. They felt the president might feel obligated to aid Congress in passing legislation by not vetoing. Others felt this system would upset the balance of power between the executive and legislative branches of government. In spite of its drawbacks, this system was brought to a vote on four separate occasions(Peirce 39). A second idea was to have the president elected by a direct vote system. Many people did not believe in this type of system, however three very prominent figures did: James Wilson, Gouverneur Morris, and James Madison(Peirce 41). They believed that the duty of the president was to protect the people from the legislature, and that the people should be allowed to their protector. However, most of the Founders believed that the average citi zen would not have enough knowledge of the candidates to make an educated choice. They believed that the people were generally misinformed and easily misled(Peirce 41). The direct vote system also favored the larger more populated states with little regard for the people of the smaller ones. This system was voted down twice, but aided in recognizing the drawbacks of the Congress electing the president(Peirce 41). A third idea was to have the state legislatures select the president. This idea w... ...tate is allowed to cast only one vote collectively. This applies to the election of vice president also. In addition, either the presidential or the vice presidential candidate voted for by the elector has to be from outside that elector’s own state.   Ã‚  Ã‚  Ã‚  Ã‚  The Electoral College has been used as the system to select the President of the United States for over two hundred years. The system was devised by the Founding Fathers to ensure that the selected president would receive the support of all the states. The system helped to maintain a strong centralized government and union. The Electoral College has been used to maintain a fair presidential selection system with little room for corruption or favoritism. It has been a part of our system of checks and balances by maintaining a clearly defined separation of the legislative and executive branches. There have been some bumps along the way, however the Electoral College is still an essential part of our elections system. Works Cited Glennon, Michael J. When No Majority Rules. Washington: Congressional Quarterly Inc, 1992. Peirce, Neal R. The People’s President. New York: Simon and Schuster, 1968.

Compare and Contrast of Short Stories Essay

In â€Å"The Ones That Walk Away From Omelas† and â€Å"The Lottery†, Ursula Le Guin and Shirley Jackson portray a supposedly perfect society built on clandestine secrets. In the short story â€Å"The Ones Who Walk Away From Omelas†, Omelas’ inhabitants are smart and cultured, and it seems like a utopian city of happiness and delight. Everything about Omelas is your every desire, disregarding the secret of the city: the good fortune of Omelas requires that a single unfortunate child be kept in never-ending filth, darkness and misery, and that all its citizens should be told of this when they come of age. After the truth is told to the people of Omelas most are initially shocked and disgusted and somehow manage to live there life and make it worth it for the child’s existence; others just walk away from the city of Omelas. In the short story, â€Å"The Lottery†, a small village of about 300 have an annual lottery; women, men, and children participate, to see who will be the chosen one to guarantee enough rain for the corn crops. The winner is to be stoned to death. The way the authors use irony to depict the story societies as wonderful and perfect then towards the end the dark secret is discovered is very intriguing and captivating, which makes you want to keep reading. In the story, â€Å"The Ones Who Walk Away From Omelas†, Omelas seems to be this beautiful and cheerful place. The story takes place during a festival and there are children running around laughing and there is music. It talks about a race and how the horses are excited, â€Å"(the horses) flared their nostrils and pranced and boasted to one another â€Å" with silver, gold, and green braided into their manes. The story has and air of excitement and celebration that is soon questioned when the author begins to talk about the child.

The Effects Of Sex Education On Schools - 2753 Words

Nearly one million teen girls become pregnant each year, with four out of 10 young women becoming pregnant at least once before they turn 20. The federal government spends about $40 billion to help families that began with a teenage birth. The overall U.S. teenage pregnancy rate declined 19 percent between 1991 and 1997 , from 117 pregnancies per 1,000 women aged 15-19 to 94.3 per 1,000.3 The national teen birth rate declined 5 percent between 1998 and 2000, reaching a rate of 48.5 births per 1,000 women ages 15-19 - the lowest rate ever recorded. Since 20011, the teen birth rate has declined 22 percent. These numbers, though declining, show that we are in dire need of a change. Providing Sex Education in schools provides the necessary tools to decrease these numbers and change the thoughts and actions of children who act impulsively with little or no knowledge of the consequences of their actions. In the 1940’s, The Public Health Service strongly supported Sex Education in public school, calling it â€Å"an urgent need†. During the 60’s, 70’s and 80’s, groups such as the Christian Crusade and the Eagle Forman launched campaigns to have Sex Education banned in schools. For many years school districts were hesitant to take part in these programs due to the controversy it stirred up with parents and political leaders. By the late 80’s, with the increase in STD’s, teen pregnancy and the HIV/AIDS epidemic, many groups began to call for the implementation of theseShow MoreRelatedSingle Sex Education Essay1416 Words   |  6 Pagessingle-sex education gained interest over coeducation, and by the early 2000s, it had gained support from congress and the Bush administration. Since then single-sex education has benefitted many students, teachers, and parents. 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The education system generally and in the UK specifically is divided into four main parts,Read MoreEssay about Single-sex education vs. Coeducation962 Words   |  4 Pages Education has been an important factor of all of our lives for an exceptional amount of time, but unfortunately, America has been falling behind from other nations in their education system compared to other nations (Pahlke 444). Almost all of our public schools in our country are coeducational and only handful of them are single-sex educational schools. Single-sex education should be taken into high consideration for most students to attend because of the benefits they might gain from them. ItRead MoreSchooling for All1221 Words   |  5 Pagesin the area of education has been the fight to make more single–sex schools available for students. Co-ed schooling has been the standard for education that many children enjoy being in. 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They believe their goals are important since beginning sex education before adolescents are having sex is critical in order toRead MoreThe Best Kind of Sex Education708 Words   |  3 Pages There is much controversy over which form of sex education should be taught, comprehensive sex education, or abstinence-only sex education. The definition for comprehensive sex education is responsible and balanced sexuality education that seeks to assist young people in understanding a positive view of sexuality, provide them with information and skills about caring for their sexual health, and help them acquire skills to make decisions now and in the future. It is medically accurate and providesRead MoreEssay The Argument of Sex Education in School1227 Words   |  5 Pages Audience Analysis: I am writing to the seven chairmen of the ___ County School Board. They are a made up of a group of five men and two women. 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There are a number of advantages to both single-sex and mixed-sex schools but toRead MoreSingle Sex Schools Are Worth Study1092 Words   |  5 PagesEducation has always been a popular topic.How can education make students better is the core of the topic.My thesis focuses on single-sex school which aims to develop a more equal environment for students. In addition to the instruction ,this research paper is divided into four parts:The first part explores why some areas carry out single-sex education.The second part illustrates the general implementation of the single –sex schools .The third part elaborates the advantages and dis advantages aboutRead MoreTeen Pregnancy Should Be Pregnant Before The Age Of Twenty1504 Words   |  7 Pageswill become pregnant before the age of twenty. People ages 15-24 represent 25 eighteen 70 percent of United States females, and 62 percent of males have had sex. About 3.2 million adolescent females are infected with the most common STIâ€℠¢s, such as chlamydia and gonorrhea (Bleakly 2006). The likelihood of teens having sex increases with each school grade level, from 32 percent in ninth grade to 62 percent in 12th grade (Ito 2006). In 2012, a total of 305,388 babies were born to a group (Oglesby 2012)