Study on Fault Diagnosis of Optical Measurement Equipment Based on Fault Tree Analysis

A kind of method about fault diagnosis of optical measurement equipment based on fault tree analysis(FTA) is proposed. Firstly the system is decomposed into several subsystems by control loop, and then generated the fault tree for each control loop. The whole fault tree of the system is obtained by the event status with fault tree of all control loops deduced. Moreover, a set of system platform was developed with the Visual Basic software. Finally, a photoelectric encoder fault case of optical measurement equipment is analysed with the platform and method. It shows that the proposed method in this paper improves the automation of fault tree construction and has certain utility and better future for application.