Composite hierarchical anti-disturbance control for stochastic systems with multiple disturbances

• Published in: Transactions of the Institute of Measurement and Control Vol. 40; no. 6; pp. 1950 - 1955
• Main Authors: Sun, Shixiang, Wei, Xinjiang, Zhang, Huifeng
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01-04-2018; Sage Publications Ltd
• Subjects: Control systems; Disturbance observers; Stochastic systems; bounded time derivative; disturbance observer-based disturbance attenuation control; multiple disturbances; Stochastic system
• ISSN: 0142-3312; 1477-0369
• DOI: 10.1177/0142331217695385

A class of stochastic systems with multiple disturbances, which includes white noises and disturbances whose time derivative is bounded, is considered in this paper. To estimate the unknown bounded disturbance, a stochastic disturbance observer is proposed. Based on the observer, a disturbance observer-based disturbance control scheme is constructed such that the composite closed-loop system is asymptotically bounded. Finally, a simulation example is given to demonstrate the feasibility and effectiveness of the proposed scheme.