Discrete Adaptive Model Following Sliding Mode Control Design for Improved Performance

Y.P. Patil and H.G. Patel

In this paper, a discrete adaptive model following (DAMF) sliding mode control (SMC) approach is proposed to uncertain systems represented in the delta form state-space model. For SMC, linear sliding surface is designed from the state error and its optimal coefficients are computed by dominant pole placement technique. System disturbance is compensated by time delay control (TDC). DAMF control law estimates uncertainties present in the system. This paper presents improved results of the proposed controller, compared to some well-known controllers found in the literature. The stability of the controller is verified by direct Lyapunov analysis. Finally, the efficacy of controller is tested by a comparative simulation study on higher-order non-oscillatory system.

Volume 12 | 03-Special Issue

Pages: 557-569

DOI: 10.5373/JARDCS/V12SP3/20201293