We present a linear cross-coupled controller to improve highspeed contouring accuracy independently of tracking accuracy in a biaxial machine tool feed drive servomechanism. Unlike conventional cross-coupled controllers, the cross-coupled controller presented here is a linear system, so it is very easy to perform the stability and steady-state error analysis, and to optimise the controller parameters. The proposed controller is evaluated experimentally on a CNC LOM machine and compared to an uncoupled controller and a conventional cross-coupled controller. Controller performance is evaluated for a circular contour at a feedrate of 30 m min
_1 . The experimental results show that the proposed controller can greatly reduce the contour error at large feedrates. The linear cross-coupled controller is simple to implement and is practical.
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Zhong, Q., Shi, Y., Mo, J. et al. A Linear Cross-Coupled Control System for High-Speed Machining. Int J Adv Manuf Technol 19, 558–563 (2002). https://doi.org/10.1007/s001700200060
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DOI: https://doi.org/10.1007/s001700200060