Title: An active disturbances rejection controller for hysteretic systems

Authors: Zeng-Qiang Chen, Jia-Xiang Zhao, Zhu-Zhi Yuan

Addresses: Department of Automation, Nankai University, Tianjin 300071, China. ' Department of Automation, Nankai University, Tianjin 300071, China. ' Department of Automation, Nankai University, Tianjin 300071, China

Abstract: An Active Disturbances Rejection Controller (ADRC) is presented for a class of single-input–single-output non-linear systems with a hysteresis non-linearity represented by the Preisach model. The designed ADRC controller is composed of the non-linearity tracking differentiator, the extended state observer and the non-linearity PID controller. It can estimate disturbances and compensate according to the information between the input and the output of the controlled object. Thus it automatically realises the suppression of disturbance. The simulation result indicates that the ADRC controller with a set of invariable parameters can maintain that the non-linear systems with a hysteresis non-linearity have ideal tracking effect.

Keywords: ADRC; active disturbances rejection controller; ESO; extended state observer; hysteresis nonlinearity; Preisach model; tracking differentiator; nonlinear systems; simulation; modelling; PID control.

DOI: 10.1504/IJMIC.2009.027032

International Journal of Modelling, Identification and Control, 2009 Vol.7 No.1, pp.113 - 118

Published online: 13 Jul 2009 *

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