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直流电机监控闭环转速系统的实现
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2010-12-08
彭友旺
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直流电动机闭环转速系统的突出优点是在很宽的范围内通过改变PWM的占空比实现调速、快速起停、正反转控制及制动等。其组成的控制系统简单、廉价、可靠，在众多领域有着极其广泛的应用，研制一种性能稳定的直流电机驱动器具有重要的意义。介绍了RS232及SPI串行总线的通讯原理,在此基础上开发了上位机监视平台和下位机直流电机控制电路。为了便于使用，还增设人机界面。实验证明,该监控系统具有较高的数据传输速率、良好的实时性、较高的稳定性和友好的人机对话功能。
- Abstract:
- The advantages of DC motor are velocity modulation, quickly rise-stop, forward-reverse controlling and brake etc by changing PWM in an very wide range.The DC motor closing-loop system is simple, cheap, stable and reliable, therefore its application is very extensive in many fields. It has great significance to develop a driving control system of DC motor with high performances.The principle of RS232 and SPI bus are introduced, and a DC motor controller with the RS232 and the SPI bus technology has been developed successfully. In addition, the communication circuit of master computer, the hardware circuit of slave computer and the system software have been property implemented. It has been proved that the control system has high transmission rate, nice real-time control, high reliability, convenient man-machine interface
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