Iterative learning control using optimal feedback and feedforward actions
作者:
NOTKER AMANN,
DAVID H. OWENS,
ERIC ROGERS,
期刊:
International Journal of Control
(Taylor Available online 1996)
卷期:
Volume 65,
issue 2
页码: 277-293
ISSN:0020-7179
年代: 1996
DOI:10.1080/00207179608921697
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
An algorithm for iterative learning control is developed on the basis of an optimization principle which has been used previously to derive gradient-type algorithms. The new algorithm has numerous benefits which include realization in terms of Riccati feedback and feedforward components. This realization also has the advantage of implicitly ensuring automatic step size selection and hence guaranteeing convergence without the need for empirical choice of parameters. The algorithm is expressed as a very general norm optimization problem in a Hilbert space setting and hence, in principle, can be used for both continuous and discrete time systems. A basic relationship with almost singular optimal control is outlined. The theoretical results are illustrated by simulation studies which highlight the dependence of the speed of convergence on parameters chosen to represent the norm of the signals appearing in the optimization problem.
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