Delay-dependent guaranteed-cost control based on combination of Smith predictor and equivalent-input-disturbance approach. (May 2016)

• Record Type: Journal Article
• Authors: Gao, Fang; Wu, Min; She, Jinhua; He, Yong
• Is Part Of: ISA transactions. Volume 62(2016:May)
• Page Start: 215
• Page End: 221
• Publication Date: 2016-05
• Subjects: Cone complementary linearization -- Equivalent input disturbance (EID) -- Free-weighting matrix -- Guaranteed-cost control -- Smith predictor -- Time delay; Engineering instruments -- Periodicals; Engineering instruments; Periodicals; Electronic journals; 629.805
• DOI: 10.1016/j.isatra.2016.02.008
• Languages: English
• ISSNs: 0019-0578

Abstract

Abstract: This paper presents a new system configuration and a design method to improve control performance for a system with an input time delay and disturbances. The equivalent-input-disturbance approach is extended to handle a time-delay system. It is combined with the Smith predictor to reject disturbances. A delay-dependent stability condition is devised in terms of a matrix inequality by using the free-weighting matrix approach. The gain of the observer is designed by applying the cone complementary linearization method to the matrix inequality. A numerical example demonstrates the validity of the method. Abstract : Highlights: Present a design method to improve control performance against disturbances. Equivalent-input-disturbance (EID) approach is extended to handle a time delay system. A delay-dependent stability condition is devised by the free-weighting matrix approach. The gain of the state observer is designed by the cone complementary linearization method. The SP-EID control method demonstrates its validity and the superiority.