Cross-Coupled Adaptive Feedrate Control for Multiaxis Machine Tools

[+] Author and Article Information
Hua-Yi Chuang, Chang-Huan Liu

Department of Electrical Engineering, National Taiwan Institute of Technology, Taipei, Taiwan

J. Dyn. Sys., Meas., Control 113(3), 451-457 (Sep 01, 1991) (7 pages) doi:10.1115/1.2896431 History: Received October 10, 1988; Revised September 12, 1990; Online March 17, 2008


Cross-coupled controllers have been proposed for improving contouring accuracy of multiaxis machine tools. However, during cross-coupled motion control, increasing contour feedrate may result in larger contour errors. In order to increase feedrate and hence productivity without sacrificing the contouring performance, this paper presents an adapative feedrate control strategy based on a linear perturbed model. The method effectively closes the feedback loop between the contour error and feedrate. An experimental biaxial control system is constructed to implement the proposed strategy. Both computer simulation and experiments have verified that desired contouring accuracy can be achieved.

Copyright © 1991 by The American Society of Mechanical Engineers
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