采用霍尔传感器和A189S52单片机控制步进直流电机转速,介绍了测速原理与软硬件设计方 法.通过1602LCD显示电机转速值,根据需要可调整控制电机的转速.测试结果表明:该转速测量系统 满足设计要求,具有硬件结构简单、性价比较高、易于调节电机转速及系统性能稳定等优点.%Hall sensors and AT89S52 microcontroller are used to control stepper DC motor' 3 rotating speed. The principle of speed-measuring and software and hardware design are introduced. Through 1602LCD,the rotating speed value is displayed, the motor speed is adjusted according to the need. Test results show that the speed measuring system can meet the design requirements,and it has advantages of simple hardware structure,high cost performance,easy to adjust motor rotating speed and stable performance,etc.
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