Clutch Comprehensive Performance Test Bed Control And Fault Diagnosis System

As Automobile Clutch is an important in the transmission of car parts, it is necessary to detection the performance index of the clutch in order to guarantee safety of the driving car. Automobile Clutch comprehensive performance test platform, which can understand rapid fully and accurately the working performance and related properties clutch, is a complete clutch performance test bench system. Platform control and fault diagnosis system is the key technology. Supported by the project "Automobile clutch comprehensive performance platform" in jilin province, the clutch comprehensive performance platform.of control and fault diagnosis system are designed in this thesis.Test platform includes three parts:the host, Control and testing system, fault diagnosis system. Test platform be used of IPC and PLC control computer are connected by Serial communication interface, to realizing system control, monitoring and data processing. Speed control system is a key element of test control and speed control system, According to disturbing torque greatly and control accuracy requirement highly is established by Mathematical modeling of speed control system, combining the advantages of the fuzzy control strong robustness and PID control steady-state small error to design fuzzy PID controller. Simulation results show that compared with PID controller, the fuzzy PID controller can improve the precision of test speed control.In order to improve the safety and reliability, combining with the actual situation and analysis of the failure mechanism of the test bench, a test bench fault diagnosis system is designed on the basis of wavelet analysis theory and Kalman filtering which can better solve the fault diagnosis questions. The simulation results verify the effectiveness and practicability of the method of fault diagnosis.Based on LabVIEW, the test control and fault diagnosis system software is developed to carry ou data acquisition, data processing and data analysis, test bench control and fault diagnosis functions and so on. The experiment and practical application demonstrates that all performance factors of the designed control and fault diagnosis system satisfy design requirements of control system, the detection precision and detection efficiency are high, and the system can run stablely and reliablely. The performance can reach the the level of foreign products.