Multimodel Control of Nonlinear Systems: An Improved Gap Metric and Stability Margin-Based Method

被引:15
作者
Ahmadi, Mahdi [1 ]
Haeri, Mohammad [1 ]
机构
[1] Sharif Univ Technol, Adv Control Syst Lab, Elect Engn, Tehran 111554363, Iran
来源
JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME | 2018年 / 140卷 / 08期
关键词
stability margin; gap metric; multimodel; nonlinear systems; state feedback strategy; MODEL-PREDICTIVE CONTROL; SHAPING DESIGN PROCEDURE; MULTIPLE-MODEL; DECOMPOSITION; STRATEGY;
D O I
10.1115/1.4039086
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a new multimodel controller design approach incorporating stability and performance criteria. The gap metric is employed to measure the distance between local models. An efficient method based on state feedback strategy is introduced to improve the maximum stability margin of the local models. The proposed method avoids local model redundancy, simplifies the multimodel controller structure, and supports employing of many linear control techniques, while does not rely on a priori experience to choose the gridding threshold value. To evaluate the proposed method, three benchmark nonlinear systems are studied. Simulation results demonstrate that the method provides the closed-loop stability and performance via a simple multimodel structure in comparison with the opponents.
引用
收藏
页数:12
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