Self-adaptive design of a nonlinear temperature control system
作者:
A.Chotai,
P.C.Young,
M.A.Behzadi,
期刊:
IEE Proceedings D (Control Theory and Applications)
(IET Available online 1991)
卷期:
Volume 138,
issue 1
页码: 41-49
年代: 1991
DOI:10.1049/ip-d.1991.0006
出版商: IEE
数据来源: IET
摘要:
The paper describes the design and implementation of an unusual self-adaptive temperature control system for a nonlinear heated bar system. The design is based on a proportional-integral-plus (PIP) control scheme, combined with a special recursive algorithm which continually updates the estimates of the rapidly variable parameters which characterise a piecewise-linear model of the heated bar system. Amongst the novel features of this true digital control (TDC) system design are: the nonminimum states-space (NMSS) formulation of the control problem, which allows for state-variable feedback pole assignment using only sampled input and output signals in the control law; the incorporation ofa prioriinformation on the physical nature of the system into the recursive estimation algorithm in order to enhance its parameter tracking capabilities; the exploitation of multirate sampling; and the implementation of the linear PIP control law in a bang-bang mode using pulsewidth modulation.
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