A novel multiple linear motor control system based on Nios II

A laser engraving machine is a kind of multi-axis CNC machine tool with no cutting force. In order to provide better feed motions in multi-axis, a novel multiple linear motor control system based on Nios II soft processors is introduced in this paper. Each Nios II soft processor controls a permanent magnet synchronous linear motor (PMSLM). The fuzzy two degree of freedom Proportional-Integral-Differential (PID) control algorithm based on Kalman filter written in C runs on the Nios II soft processors. Relative coupling-based multi-motor synchronous control algorithm for the PMSLM is introduced to provide high synchronization accuracy and strong robustness. Experimental results show that compared to conventional multiple linear motor control systems, control system based on Nios II soft processors provides a good synchronicity, higher efficiency and higher accuracy.