基于速度前瞻的双轴直线电机交叉耦合控制策略

doi:10.19595/j.cnki.1000-6753.tces.200346

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Abstract In order to further improve the processing accuracy of the working platform and enhance the overall system structure robustness and response speed, a speed prospective based cross-coupling control strategy for dual-axis linear motor is proposed. Firstly, a mathematical control model based on a dual-axis linear motor is established, and an adaptive interpolation algorithm is improved to design a cross-coupled contour error controller that can adapt to a wide range of path types. At the same time, the dual-loop sliding mode control algorithm is used to design a single-axis motor controller, which can increase the speed of the motor's response to interference and adjust the output in time. In order to reduce the mechanical shock and structural vibration, the speed-forward controller is used to plan the S-type speed according to the curvature change in advance and to provide the interpolation speed. It can realize the soft motion process and reduce the mechanical oscillation of the system. Experimental results show that this method significantly improves control accuracy and system performance.

Key words： Dual-axis linear motor cross-coupling control algorithm S-type speed planning Super-twisting sliding mode control algorithm

Received: 07 April 2020

PACS:

TM359.4

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	Li Zheng
	Xiao Yu
	Sun Hexu
	Zhou Shuo
	Wang Qunjing

Cite this article:

Li Zheng,Xiao Yu,Sun Hexu等. Speed Prospective Based Cross-Coupling Control Strategy for Dual-Axis Linear Motor[J]. Transactions of China Electrotechnical Society, 2021, 36(5): 973-983.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.200346 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I5/973

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