针对多电机同步控制系统中调速、换向等问题,基于自动控制技术,设计以PC机为上位机、DSP为下位机能够同时调节双直流电机转速和转向的,以及选择工作电机的控制系统.给出了控制系统相关硬件和软件设计,通过PC机与DSP之间的串口通信,采用上位机串口软件发送数字化控制指令给下位机,控制双直流电机完成一系列预设功能;采用PWM脉宽调制原理对电机的转速进行调节,利用光电编码器通过T法对电机转速进行测量,并通过实测波形显示电机转速.实验结果表明,该系统不仅能够实现双直流电机转速和转向的同步调节,而且可以对工作电机进行选择,达到了双直流电机同步控制的效果,具有一定的可靠性及有效性.%Aiming at the problems of speed control,commutation and so on in the multi-motor synchronous control system,based on automatic control technology,a control system with PC as principal computer and DSP as slave computer is designed,which can change dual DC motor speed and steering,as well as select work drive motors.Related hardware and software design of the control system are given.Through serial communication between DSP and PC using PC serial port software,digital control command is sent to the slave computer for controlling dual DC motor to do a series of preset functions.PWM pulse width modulation is used for motor speed regulation,photoelectric encoder is used to measure motor speed by T method,and the motor speed is displayed by the actual waveform.Experimental results show that the system can not only realize the synchronization of dual DC motor speed and steering adjustment,but also select the motor and achieve the dual DC motors synchronization control effect.The control system has certain reliability and effectiveness.
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