基于DSP的全数字交流伺服系统的设计

Design of Whole Digit AC Servo System Based on DSP

基于DSP的全数字交流伺服系统,控制回路采用TMS320F240芯片,其三相电流以隔离传感器完成检测,通过两个电流传感器检测两相电流,可算出第三相电流值。系统主回路含三相全波整流桥电路,三对IGBT功率管组成的逆变器电路,制动电路及保护电路等。其中逆变器、制动电路和保护电路均集成于大功率IPM模块之中。

The whole digit AC servo system was based on DSP. The TMS320F240 chip was adopted by control loop and the three-phase current was detected by isolation sensor. The three-phase current could be calculated through two-phrase current, which was detected by two current sensors. The main loop includes a three-phase bridge, an inverter module with three IGBT power tubes, a braking circuit and protecting circuits, etc. The inverter module, the braking circuit and protecting circuits were integrated in high-power IPM module.