Output feedback sliding mode control under networked environment

Abstract

This article considers the problem of sliding mode output feedback control for networked control systems (NCSs). The key idea is to make use of not only the current and previous measurements, but also previous inputs for the reconstruction of the state variables. Using this idea, sliding mode controllers are designed for systems with constant or time-varying network delay. The approach is not only more practical but also easy to implement. To illustrate this, the design technique is applied to an inverted pendulum system.

Keywords:

• discrete-time systems
• networked control systems
• sliding mode control

Acknowledgements

The authors would like to thank the reviewers for their very helpful comments and suggestions which have improved the presentation of this article.

This work was partially supported by the Fundamental Research Funds for the Central Universities ZY1109, GRF Grant HKU 7031/07P, National Nature Science Foundation of China under Grant 61074081.