Horizontal Thrust Control of Magnetic Suspension Platform Based on Active disturbance Rejection Controller

Abstract

Abstract: A novel planar magnetic suspension platform is introduced. In view of the horizontal movement of the magnetic suspension platform being a nonlinear, multivariable and strong coupling system, an improved active disturbance rejection controller (ADRC) is proposed. It can overcome the unsmoothness of non-linear function in nonlinear state error feedback (NLSEF) of conventional ADRC, and a set of effective rules of setting controller parameters is explored. Moreover, the internal disturbance and external disturbance are observed by using the extended state observer (ESO) and then compensated. The results of simulation and experiment indicate that the improved controller has excellent dynamic and static characteristics and robustness.

Key words: Auto-disturbance rejection controller(ADRC), Linear motor, Magnetic suspension platform, Precision positioning, The morphing technology, The process model, Transfinite interpolation, Muti-axis milling

CLC Number:

TM921.541

ZHOU Zhenxiong;YANG Jiandong;QU Yongyin;LIU Dejun. Horizontal Thrust Control of Magnetic Suspension Platform Based on Active disturbance Rejection Controller[J]. , 2008, 44(9): 193-199.

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Horizontal Thrust Control of Magnetic Suspension Platform Based on Active disturbance Rejection Controller

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