采用TMS320F240的运动控制实验平台

以TMS320F240数字信号处理器(DSP)为核心的运动控制实验平台,采用三项交-直-交逆变电路和检测电路及相应外围电路构成三项变频器,其上位机使用PC.变频器与感应电机和电机负载结合,构成了一个完整的交流调速系统.逆变器的主开关器件,选用智能功率模块(IPM).DSP控制器以TMS320F240为核心的SEED-F240 DEMO版为基础开发,包括信号的A/D转换和接口等.负载使用5K38UN270Q三项感应伺服电机所带磁粉离合器,对称空间矢量脉宽调制波由TMS320F240的通用定时器1与3个全比较单元配合产生,采用M/T法测量转速.只要遵循该实验平台的接口协议,设计所需控制软件,即可实现其运动控制,并已成功地用于异步电机无速度传感器的矢量控制、直接转矩控制、V/F恒定调速控制等项目.

A Motion Control Experimental Platform Based on TMS320F240

TMS320F240-based digital signal processor (DSP) used as the key part of experimental platform for motion control, PC used as upper computer, three-phase transducer consists of three-phase AC-DC-AC frequency changing circuit, detecting circuit and peripheral circuit. The AC adjusting speed system made up of transducer and induction-motor. Intelligent power module (IPM) was used as main on/off device of transducer. On the basis of TMS320F240-based DSP used as the key part, SEED-F240 DEMO board, signal A/D conversion and interface board was developed. The magnetic powder clutch in 5K38UN270Q three-phase servo induction-motor was applied for loading, the modulating wave for the pulse width of symmetrical space vector was generated by a universal timer in TMS320F240 and 3 comparative cell, the rotate speed was tested with M/T method. If only the control software was designed according as the interface protocol of experimental stage, motion control was realized. The experimental platform for motion control had been applied in the vector control, torque control and V/F constant speed control of non-speed sensor for asynchronous motor.