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Estimation and compensation of periodic disturbance using internal-model-based equivalent-input-disturbance approach
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Estimation and compensation of periodic disturbance using internal-model-based equivalent-input-disturbance approach
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Estimation and compensation of periodic disturbance using internal-model-based equivalent-input-disturbance approach
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Journal Article
Estimation and compensation of periodic disturbance using internal-model-based equivalent-input-disturbance approach
2022
Overview
This paper presents an improved equivalent-input-disturbance (EID) approach to deal with periodic disturbances. The approach has two degrees of freedom. One is an improved EID compensator, in which a repetitive controller is inserted in this study. The other is a conventional servo system for a reference input. The improved EID compensator estimates and compensates for periodic disturbances without steady-state error, and the servo system ensures a satisfactory tracking performance. The improved EID compensator is designed using the linear-matrix-inequality (LMI) method. Three parameters in an LMI are selected using the particle-swarm-optimization (PSO) algorithm. The state-feedback gain of the conventional servo system is designed using the linear-quadratic-regulator (LQR) method. Simulation results of a rotational control system demonstrate the validity of the approach and its advantage over others.
Publisher
Science China Press,Springer Nature B.V
