Detection and Control of DC Motor Speed Based on ELVIS and LabVIEW

With the application of motor in industry more and more widely, the measurement and control of motor speed, which is the most important parameter of motor, is particularly important. In order to facilitate students to carry out the measurement and control system experiment, a DC motor speed detection and control system based on NI ELVIS experimental platform and LabVIEW software is designed. Photoelectric sensor and Hall sensor are selected as acquisition sensors for speed detection, and then the signal is transmitted to the upper computer through NI ELVIS experimental platform, and the acquisition program and measurement and control interface of the upper computer are written, so as to display the detection results on the front panel of the upper computer. PID control is selected as the speed control mode, LabVIEW software is used to write the PID control program, at the motor speed is changed by adjusting the output voltage through PID. The system is simple and flexible, convenient for debugging, and has strong scalability, which enables students to master the measurement and control system architecture more specifically and deeply, and also lays a solid foundation for future project development.