Output feedback sliding mode control based on non-singular terminal sliding mode observer. (May 2023)

• Record Type: Journal Article
• Authors: Chen, Yunjun; Jiang, Chao; Dong, Jiuzhi; Zhao, Zhanshan
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 237:Number 5(2023)
• Page Start: 939
• Page End: 949
• Publication Date: 2023-05
• Subjects: Output feedback control -- observer -- singularity -- terminal sliding mode; Mechanical engineering -- Periodicals; Automatic control -- Periodicals; Systems engineering -- Periodicals; 621.3
• DOI: 10.1177/09596518221135920
• Languages: English
• ISSNs: 0959-6518

Abstract

In this article, the finite-time output feedback sliding mode control problem is investigated for a class of continuous-time linear systems with unmeasurable states. First, a novel terminal sliding mode observer is established to estimate the unmeasured system states. Second, a novel integral sliding surface is introduced with tunable parameters. Then, an output feedback sliding mode controller with power terms is constructed to drive the given system to the origin in a finite time. A switching from the terminal sliding mode to a usual sliding manifold is taken to avoid singularity problem. Finally, two application-oriented examples are offered to verify the effectiveness of the proposed algorithm.