基于DSP的超声波电源控制技术的研究  

Research on ultrasonic source control technology based on DSP

作　　者：裴玖玲[1] 屈百达[1] 周鹏[2] 

机构地区：[1]江南大学通信与控制工程学院,无锡214122 [2]塔里木大学农业工程学院,阿拉尔843300

出　　处：《电子测量技术》2008年第3期162-166,共5页Electronic Measurement Technology

基　　金：塔里木大学校长基金青年(TDZKQN05002)

摘　　要：在超声波逆变电源系统中,为了降低开关损耗而广泛的采用移相SPWM技术。但是传统的模拟控制存在精度低、动态响应慢、噪声大等缺点,在此介绍了一种基于TMS320F2812 DSP芯片的SPWM数字移相方法。该方法的特点是查表和在线计算相结合,既能满足一定的控制精度要求,又能满足实时控制的要求,还适用于带反馈控制的逆变系统中。这种新型的数字控制技术提高了频率跟踪精度和功率稳定程度,优化了电路的整体性能。Phase-shifting SPWM technology is widely used in the field of ultrasonic inverter power system. The traditional simulation control exists low precision, slow dynamic response and some other the shortcomings; in this paper, a digital phase-shifting control method based on DSP TMS320F2812 is proposed. The characteristic of this method is the combination of the table checking and on-line calculation techniques, which can not only satisfy the control precision but also the requirement of the real-time control. This method is still suitable for inverter system with feedback control. The whole performance of the circuit is developed.

关 键 词：数字信号处理器 数字移相技术 正弦脉宽调制 逆变器 

分 类 号：TM714[电气工程—电力系统及自动化]