Robust switching signal estimation for a class of uncertain nonlinear switched systems

ABSTRACT

In this paper, a robust switching signal estimation approach is presented for a class of uncertain nonlinear switched systems using a sliding mode robust observer on the continuous state vector of system. In this approach, the estimation of switching signal is achieved at a bounded and arbitrary small time in spite of un-modelled uncertainties. The developed estimation technique can also be employed on mode-dependent control methods to reach a practical controller for nonlinear switched systems with the inaccessible switching signal. The simulation results illustrate the capability of proposed method.

KEYWORDS:

• Hybrid systems
• switched systems
• nonlinear systems
• switching signal estimation
• sliding mode robust observer

Acknowledgments

The authors would like to thank members of Advanced Control Systems Lab. of the University of Tehran for the fruitful discussion on the subject.

Disclosure statement

No potential conflict of interest was reported by the authors.