Design of decoupling Smith control for multivariable system with time delays

作     者：黄灿 桂卫华 阳春华 谢永芳 

作者机构：School of Information Science and EngineeringCentral South University 

基　　金：Projects(60634020  61074117) supported by the National Natural Science Foundation of China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2011年第18卷第2期

页      码：473-478页

摘      要：In order to solve the decoupling control problem of multivariable system with time delays,a new decoupling Smith control method for multivariable system with time delays was proposed. Firstly,the decoupler based on the adjoint matrix of the multivariable system model with time delays was introduced,and the decoupled models were reduced to first-order plus time delay models by analyzing the amplitude-frequency and phase-frequency characteristics. Secondly,according to the closed-loop characteristic equation of Smith predictor structure,proportion integration (PI) controllers were designed following the principle of pole assignment for Butterworth filter. Finally,using small-gain theorem and Nyquist stability criterion,sufficient and necessary conditions for robust stability were analyzed with multiplicative uncertainties,which could be encountered frequently in practice. The result shows that the method proposed has superiority for response speed and load disturbance rejection performance.

主 题 词：multivariable process time delay Smith predictor decoupling robust stability 

学科分类：0711[理学-心理学类] 07[理学] 08[工学] 081101[081101] 0811[工学-水利类] 071102[071102] 081103[081103] 

核心收录：

D　O　I：10.1007/s11771-011-0720-8

馆 藏 号：203496945...