从永磁方波无刷直流电动机的控制特性出发，提出了基于数字信号处理技术的控制策略，给出了所采用的PWM开关方案。在此基础上，研究了以TMS320F240 DSP为控制核心的永磁方波无刷直流电动机数字控制系统的硬件结构和软件设计，最后给出了实验结果。关键词 永磁方波无刷直流电动机 数字控制系统 数字信号处理 PWM TMS320F240Abstract From control characteristics of permanent magnet square wave brushless DC motor，this paper gives the control strategy based on the technique of digital signal processing and presents the PWM switching scheme used．Furthermore，this paper researches on the structure of hardware and the design of software of control system of permanent magnet square wave brushless DC motor which makes TMS320F240 DSP as control core，with experimental results given eventually．Keywords Permanent Magnet Square Wave BLDC Motor Digital Control System Digital Signal Processing PWM TMS320F240
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