摘 要
近年来，电机控制技术、微电子技术和电力电子技术在快速发展，直流电机由于自身的高性能被大量应用。直流电机具有结构简单、运行可靠和维护便捷等优点，同时具有输出转矩大、运行效率高的优点，因此在运动控制领域取得广泛应用。尤其在高性能的运动控制系统中，对无刷直流电机性能的要求一直在提高。在电机本体优化设计、电力电子设备控制跟控制策略等方面对电机性能进行改善，会产生很大的经济效应。 防辐射手机
半透明纸 在大量对无刷直流电机控制系统的发展应用文献调研为基础，本文采用TI公司的TMS320F2812芯片为控制核心，控制对象是直流电机，研究基于DSP的直流电机控制系统。本文对电机本体的基本结构和控制算法进行分析，研究如何使电机平稳起动，提高系统的调速性能。其次，根据电机及DSP芯片的特性，得出无刷直流电机闭环控制系统设计方案，由此对硬件和软件进行设计。硬件部分主要电路包括电源电路、位置检测电路、驱动电路和保护电路；在软件部分根据控制策略，在开发软件CCS中用C语言编写主程序、初始化程序和中断服务程序等模块。最后给出实际电机控制系统运行时的实验测试情况，给出了转速的实验波形，设计的控制系统能稳定调速，结果比较理想。ebeam 和嫩太阳能庭院灯
关键词：直流电机；DSP;PID
The Design Of DC Motor Control System Based On DSP
ABSTRACT
In recent years, with the rapid development of control technology, microelectronics technology and power electronic technology,DC motor has been widely applied because of it’s high performance. DC motor has advantages of convenient maintenance, reliable operation and simple structure, but also has high torque, higher operating efficiency advantages. So it has a wide range of applications in the field of motion control. Specially, in the high-performance motion control, the requirement of performance of DC motor has being improving.
Based on researching vast literatures about the application research of DC motor control system development, this document studies the sensor DC motor using DSP, which use the TMS320F2812 chip as a control core and the DC motor as the object. In this docume
折流板除雾器nt, the basic structure of motor and control algorithm is studied in order to make the motor smooth starting and improve system performance. Besides, according to the characteristic of motor and DSP chip and system’s requirements, the design scheme of DC motor’s control system has been completed. The hardware part includes power supply circuit, current detection circuit, protection circuit and drive circuit. The software part contains main program, initialization program and interruption program. Finally, experimental research is made on the worktable, and got the rotate speed fluctuation. The control system designed is stable in this paper, and it has good speed adjusting performance and a wide speed range.
Key words: DC motor; DSP; PID
1 绪论
1.1课题研究的意义
在现代工业中阻塞密度,生产机械根据其工艺特点,对出现拖动的电动机提出各种不同的要求,有些要
求能迅速起动、制动和反转;而有的要求多台电动机之间的转速能按一定的比例协调运动;也有的需要电动机达到极慢的速度运动;有的要求电动机起、制动平稳,并且能准确的停在给定的位置。由此可见各种拖动系统都是通过控制转速使得控制转矩来实现的。[1]与交流电机相比,直流电动机由于具有调速性能好、稳定性好、静差率小以及具有良好的动态性能、运行效率高的优点,因此在很长的时期内,高性能调速系统几乎都采用直流调速系统。
