低成本永磁交流伺服系统设计

Design of Low Cost Permanent Magnet AC Servo System

提出一种使用线性霍尔传感器作为电机反馈元件的永磁同步电动机交流伺服控制系统。该系统采用线性霍尔传感器代替光电编码器和开关霍尔传感器,从线性霍尔传感器输出信号中得到转子位置和速度信息;在此基础上,给出一种直接在三相静止坐标系中产生相电流命令的磁场定向控制算法。将提出的交流伺服系统应用在工业缝纫机中,实现结果表明了所设计控制系统合理可行,具有较高性价比。

The design and architecture implementation of AC servo control system for permanent magnet synchronous motor using linear Hall effect sensors as the motor feedback devices were presented. The position and speed information of the rotor was obtained from the measured linear Hall effect sensor signals by using the linear Hall effect sensors in place of optical encoders and latched Hall effect sensors normally used. Furthermore, the novel field - orientated control algorithm was achieved by generating phase current references in the three phase stationary frame. This AC servo control system was applied in industrial sewing machine, and the experiments results showed that the proposed control system was available, reasonable and had the better performance and lower cost.