Abstract
The transmission speed of traditional pulse command servo control systems not only restricts the update rate of command but also limits the performance of the servo system. With the advantages of fast responding, interference rejection, and multi-axis synchronous control, Network Motion Control System (NMCS) becomes an excellent solution for modern multiple-axis servo control systems, such as CNC and robots. Although NCMS has been widely and successfully applied in the aforementioned industrial applications, the non-real-time performance of existing NMCS has been uncovered and renders it improper for real-time interactive time-varying command multi-axis servo system. To resolve this issue, this research develops a real-time multi-axis servo motion control system based on the existing NMCS hardware. The control program is written based on the multi-thread concept with high-precision timing control. In this study, the motion of an electrical Stewart platform has been tested to validate the effectiveness of the developed solution. The results show that the developed system does improve the real-time performance of electrical Stewart platform system, and successfully corrects the defect of improper real-time command updating of NMCS.
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