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A Study on the Convergence Condition of ILC for Linear Discrete Time Nonminimum Phase Systems  

Bae, Sung-Han (세종원격대학 문화예술학부)
Ahn, Hyun-Sik (국민대학 전자공학과)
Jeong, Gu-Min (국민대학 전자공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.1, 2008 , pp. 117-120 More about this Journal
Abstract
This paper investigates the convergence condition of ADILC(iterative learning control with advanced output data) for nonminimum phase systems. ADILC has simple learning structure including both minimum phase and nonminimum phase systems. However, for nonminimum phase systems, the overall time horizon must be considered in input update law. This makes the dimension of convergence condition matrix large. In this paper, a new sufficient condition is proposed to satisfy the convergence condition. Also, it has been shown that this sufficient condition can be satisfied although it is not full impulse response.
Keywords
Iterative learning control; Nonminimum phase system; Convergence condition; Impulse response;
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