A GESO based MPC approach to contour error control of networked motion control system

Yao-Wei Wang, Wen-An Zhang, Hui Dong and Li Yu

International Journal of Systems Science, 2019, vol. 50, issue 11, 2216-2225

Abstract: This paper presents a generalised extended state observer (GESO) based model predictive control (MPC) approach to contour error control for networked multi-axis motion system (NMAMS) with network-induced delays. First, the uncertainties induced by the network-induced delays are modelled as an additive bounded disturbance, and a novel model predictive controller based on the GESO is designed for the uniaxial trajectory tracking control system. The GESO is used to estimate the system state and the disturbance simultaneously, and the effects of the uncertainties induced by the delays are eliminated by the proposed GESO based controller. Then the contour error estimation method is adopted, and a PID controller is designed to compensate the contour error. Finally, experiments are carried out to demonstrate the effectiveness of the proposed method.

Date: 2019
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DOI: 10.1080/00207721.2019.1648705

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