Design of Fault Diagnosis Instrument for Speed Control System Based on Virtual Instrument

The operating status of the Electronic Speed Controller and the engine of the cannon needed to be evaluated and checked in ordinary maintenance, examination and repair. A useful fault diagnosis system for Electronic Speed Controller was designed by LabVIEW. The system was composed by magneto electric spin speed sensor, junction box, PWM driven module, PCI1802 multi-function card and Apolo530 industry control portable computer. It could be used to measure and simulate the signal of the magneto electric spin speed sensor or the executor and also could be used to diagnose the faults of the sensor, adjust board and executor of the Electronic Speed Controller. Reliability and convenience of the system was showed in the simulation running experiment.