Disturbance attenuation by output feedback for a class of nonlinear systems. (July 2016)

• Record Type: Journal Article
• Authors: Wei, Chunling; Wang, Qiangde
• Is Part Of: Transactions of the Institute of Measurement and Control. Volume 38:Number 7(2016)
• Page Start: 884
• Page End: 892
• Publication Date: 2016-07
• Subjects: Nonlinear systems -- disturbance attenuation -- uncertain control direction -- output-feedback -- L2-gain; Automatic control -- Periodicals; Measuring instruments -- Periodicals; Commande automatique -- Périodiques; Mesure -- Instruments -- Périodiques; 681.2
• DOI: 10.1177/0142331215594875
• Languages: English
• ISSNs: 0142-3312

Abstract

This paper investigates the problem of disturbance attenuation by output feedback for a class of minimum-phase nonlinear uncertain systems with unknown control direction. In order to deal with the difficulties brought by the unknown direction, we first transform the original system into a new form by a linear state transformation. Then, based on a state observer, a constructive output feedback design procedure is proposed to solve the disturbance attenuation problem in the sense of L 2 -gain. The efficiency of the control method is demonstrated by a simulation example.