Active Disturbance Rejection Sliding Mode Control for Time-Delay Systems

doi:10.16182/j.issn1004731x.joss.17-0041

Abstract

Abstract: Aiming at the time-delay systems with uncertainty, this paper designs a third-order nonlinear feedback extended state observer (ESO) by using the coordinate transformation. The ESO can estimate both the system states and the total disturbance signal, and the nonlinear feedback has fast convergence. By the first-order approximation of the time-delay, the output feedback control problem of the time-delay system is transformed into controlling the second-order nonlinear uncertain system with unknown function. On the basis of the tracking differentiator (TD) and the designed ESO, the second-order sliding mode controller (SMC) is designed to realize the fast and accurate tracking of the output signal. The numerical simulation results verify the effectiveness of the proposed control algorithm.

Key words: time-delay system, extended state observer, active disturbance rejection control, sliding mode controller

CLC Number:

TP273

Wang Suzhen, Sun Guofa, Liu Shengrong. Active Disturbance Rejection Sliding Mode Control for Time-Delay Systems[J]. Journal of System Simulation, 2019, 31(1): 102-109.

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