Robust Iterative Learning Control with Quadratic Performance Index

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• 作者：Zuhua Xu ; Jun Zhao ; Yi Yang ; Zhijiang Shao ; Furong Gao
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：January 18, 2012
• 年：2012
• 卷：51
• 期：2
• 页码：872-881
• 全文大小：501K
• 年卷期：v.51,no.2(January 18, 2012)
• ISSN：1520-5045

文摘

In this paper, a robust iterative learning control (ILC) designed through a linear matrix inequality (LMI) approach is proposed first, based on the worst-case performance index with ellipsoidal uncertainty and polytopic uncertainty, respectively. Since the design based on worst-case performance index is too conservative, a novel ILC design based on nominal performance index is further proposed, and its robust convergence properties are proven. The latter can give better performance when the nominal model is close to the true process. Simulations have demonstrated the effectiveness and excellent performance of the proposed methods.