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Fuzzy logic cross-coupling controller for precision contour machining

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This paper introduces a new cross-coupling controller with a rule-based fuzzy logic control. It is asserted that (i) fuzzy logic controllers provide a better transient response (which is essential for better contour accuracy during transient motions) than the conventional controllers, such as PID controllers, and (ii) cross-coupling controllers perform better than axial controllers in trajectory tracking by machine tools. In this paper, a fuzzy logic controller and a cross-coupling controller are combined to reduce contour errors. A simulation of the FLCCC was performed and the FLCCC was implemented on a CNC milling machine. The simulation and the experimental results show improved contour accuracy over the conventional cross-coupling controller.

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Jee, S. Fuzzy logic cross-coupling controller for precision contour machining. KSME International Journal 12, 800 (1998). https://doi.org/10.1007/BF02945547

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Key Words

  • CNC
  • Machine Tool
  • Contouring Accuracy
  • Cross-Coupling Control