Study and application of finite time convergence ADRC with dead zone and anti-saturation disturbance compensation

Abstract

Abstract For the problem of frequency operation and the saturation of control input of the controller which caused by the unpredictable load disturbance of propulsion system, the active disturbance rejection control (ADRC) with dead zone and saturation disturbance compensation is designed. The dead zone and anti-saturation disturbance compensation module are introduced into the observer to reduce the operating frequency of the propulsion control system under load disturbance and to improve the control performance when the control input is saturated. However, the error feedback part of ADRC uses the finite-time sliding mode feedback. Simulation results show that the proposed algorithm reduces the operating frequency of the control system and improves the control performance when the control input is saturated.