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Download e-book for iPad: Autotuning of PID Controllers: A Relay Feedback Approach 2nd by Cheng-Ching Yu

By Cheng-Ching Yu

ISBN-10: 1846280362

ISBN-13: 9781846280368

ISBN-10: 1846280370

ISBN-13: 9781846280375

Recognising some great benefits of more desirable regulate, the second one version of Autotuning of PID Controllers offers uncomplicated but potent equipment for making improvements to PID controller functionality. the sensible problems with controller tuning are tested utilizing quite a few labored examples and case stories in organization with specifically written autotuning MATLAB® courses to bridge the distance among traditional tuning perform and novel autotuning equipment. The broadly revised moment variation covers: • Derivation of analytical expressions for relay suggestions responses. • Shapes of relay responses and stronger closed-loop keep an eye on and function overview. • Autotuning for dealing with strategy nonlinearity in multiple-model-based situations. • The effect of imperfect actuators on controller functionality. This booklet is greater than only a monograph, it's an self sufficient studying instrument acceptable to the paintings of educational keep watch over engineers and in their opposite numbers in searching for more beneficial strategy keep an eye on and automation.  

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Extra info for Autotuning of PID Controllers: A Relay Feedback Approach 2nd edition

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An improved autotune identification method. Ind. Eng. Chem. Res. 1991;30:1530. 12. Wang QG, Hang CC, Zou B. Low-order modeling from relay feedback. Ind. Eng. Chem. Res. 1997;36:375. 13. Majhi S, Atherton DP. Auto-tuning and controller design for processes with small time delays. IEE Proc. Control Theory Appl. 1999;146(3):415. 14. Kaya I, Atherton DP. Parameter estimation from relay auto-tuning with asymmetric limit cycle data. Process Control 2001;11:429. 15. Panda RC, Yu CC. Analytical expressions for relay feedback responses.

Handbook of PI and PID controller tuning rules. London: Imperial College Press; 2003. 11. Martin JJ. Cubic equation of state – Which?. Ind. Eng. Chem. Fundam. 1979;18:81. 12. Luyben WL, Luyben ML. Essentials of process control. New York: McGraw-Hill; 1997. 13. Åström KJ, Hägglund T. Automatic tuning of PID controllers. Instrumentation Society of America: Research Triangle Park; 1988. 14. Zhuang M, Atherton DP. Automatic tuning of optimum PID controllers. IEE Proc. D 1993;140:216. 15. Luyben WL.

For example, if the K u and  u in the previous example are close to the true values, then we will not have errors in the steady state gains and time constant for model 1. 16 can deviate significantly from the true system parameters. This implies the observed ultimate period Pˆu and the computed ultimate gain are not the true values. In order to have a better approximation of the transfer function, fundamental analysis of the relay feedback system is necessary. First, one would like to know what the period of oscillation from the relay feedback experiment really represents.

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Autotuning of PID Controllers: A Relay Feedback Approach 2nd edition by Cheng-Ching Yu


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