Digital redesign of the decentralised adaptive tracker for linear large-scale systems

作者：Lin Ming Hong; Tsai Jason Sheng Hong^*; Chen Chia Wei; Guo Shu Mei; Chu Che An

来源：International Journal of Systems Science, 2010, 41(2): 173-187.

DOI：10.1080/00207720903042988

• digital redesign
• decentralised control
• adaptive control
• model reference

A novel digital redesign of the analogue model-reference-based decentralized adaptive tracker is proposed for the sampled-data large scale system consisting of N interconnected linear subsystems, so that the system output will follow any trajectory specified at sampling instant which may not be presented by the analytic reference initially, and shows that the proposed decentralized controller induces a good robustness on the decoupling of the closed-loop controlled system. The adaptation of the analogue controller gain is derived by using the model-reference adaptive control theory based on Lyapunov's method. In this article, it is shown that using the sampled-data decentralized adaptive control system it is theoretically possible to asymptotically track the desired output with a desired performance. It is assumed that all the controllers share their prior information and the principal result is derived when they cooperate implicitly. Based on the prediction-based digital redesign methodology, the optimal digital redesigned tracker for the sampled-data decentralised adaptive control systems is newly proposed. An illustrative example of interconnected linear system is presented to demonstrate the effectiveness of the proposed design methodology.

• 出版日期2010