Optimization Methods of Motion Control System at the Inflection Point
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Motion control system has complex features, especially the motion planning problems of the system. Motion control system inevitably causes mechanical vibration when it moves to inflection point in high-speed interpolation process. In this paper, different mathematical models of the inflection point are set up. Outer arc method and inner arc method are put forward to optimize the interpolation algorithm at inflection point. And the advantages and disadvantages of the two methods are analyzed. Combining motion control with intelligent control, the selection of the key length at the inflection point based on fuzzy control theory. Finally, to verify the effectiveness of the methods, an open motion control platform was built, the interpolation algorithm is encapsulated in function block, which accords with the motion control standard proposed by PLCopen.
[1] Minyoung Sung,et al. An open-source development environment for industrial automation with EtherCAT and PLCopen motion control , 2013, 2013 IEEE 18th Conference on Emerging Technologies & Factory Automation (ETFA).