Transcription of SECTION 19
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SECTION 19
CONTROL SYSTEMSC ontrol is used to modify the behavior of a system so it behaves in a specific desirable way over time. Forexample, we may want the speed of a car on the highway to remain as close as possible to 60 miles per hourin spite of possible hills or adverse wind; or we may want an aircraft to follow a desired altitude, heading,and velocity profile independent of wind gusts; or we may want the temperature and pressure in a reactorvessel in a chemical process plant to be maintained at desired levels. All these are being accomplished todayby control methods and the above are examples of what automatic control systems are designed to do,without human intervention. Control is used whenever quantities such as speed, altitude, temperature, orvoltage must be made to behave in some desirable way over SECTION provides an introduction to control system design methods. , This SECTION :CHAPTER CONTROL SYSTEM Role of Control Differential Variable OF DYNAMICAL Response, Modes and of First and Second Order Response Performance Specifications for a Second Order Underdamped of Additional Poles and CONTROL DESIGN Specifications and Design Strategy of Control DESIGN Feedback and Observer 06:08:2004 6:43 PM Page Electronics Engineers' Handbook, 5th Editio
To design a controller that makes a system behave in a desirable manner, we need a way to predict the behav-ior of the quantities of interest over time, specifically how they change in response to different inputs. Mathematical models are most oftenly used to predict future behavior, and control system design methodolo-gies are based on such ...
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