一种小功率变频控制驱动装置的硬件设计

Hardware design of a suit of small power frequency-variable controlled equipment

由于变频装置在节能技术中所起的重要作用,本文以美国TI公司的电机控制专用数字信号处理器(DSP)芯片TMS320LF2407为核心,开发了一种小功率的变频控制驱动装置。对该装置的总体方案进行了设计,对主电路和控制电路进行了研究分析,硬件设计中详细介绍了控制电路的DSP小系统电路、电流检测模块、电机转速和位置检测模块、脉宽调制(PWM)波形输出和故障输入电路等。实验结论表明:采用高速专用微处理器TMS320LF2407,该装置结构简单,软件编制容易、控制精度和可靠性高。

Due to the vital function of frequency-variable equipment in the energy-saving technology, the paper develops a suit of small power frequency -variable conlrolled equipment based on digital signal processor （DSP） TMS320LF2407 of American TI company. It designs holistic project of the equipment, researches and analyzes the main circuit and controlled circuit. The hardware of small DSP system, current detection module, motor speed and location module and PWM output and fault input module is introduced in detail. The experimental results indicate： As a result of TMS320LF2407 high speed and appropriative integrate-circuit, the laboratorial setting has a simpler hardware constraction, more easy soft program, higher control precision and reliability in practice.