Development Of Experimental Platform Of Gearbox Fault Diagnosis Based On Visual Instrument

With the growing complicated and automatic of equipment, the losses caused by the faultof gear and gearbox to the production and society are increasing, and more likely to endangerthe life safety of operation staff, so the research and exploration of gearbox fault diagnosismethod is becoming more and more important and urgent, but the research of the method ofgear fault diagnosis technology and its condition monitoring must eventually be assigned tospecific experiments, therefore, the development of a suitable software and hardwareexperimental platforms is vital to ensure smoothly the final research of fault diagnosis method.The paper is to develop a universal platform for the gearbox fault diagnosis test based on thefeatures of virtual instrument technology to study fault diagnosis method based on energydissipation.Using the Lab view’ strong function of signal analyzing and processing and friendly userinterface, the paper is to develop a experimental platform for signal acquisition and analyzingand evaluation of each analysis method with PC as core and sensor, signal conditioning, PCIdata acquisition card and other hardware as bases. To study the fault diagnosis method basedon energy dissipation, the system not only must adapt to the actual conditions of the testbench, can achieve the test requirements of a variety of experimental conditions, has manykinds of testing parameters, high test precision, data analysis and processing capability, butalso have strong versatility and portability. The specific research contents include thefollowing:(1) Analyzing the principle of the signal time domain analysis, frequency domain analysis,wavelet transform, manifold learning, signal analysis and feature extraction method, providesthe theoretical basis for system development.(2) Analyzing the system function demand and the overall goals. To design each part ofthe system through the system requirements analysis.(3) Designing and Realization of the gear fault diagnosis hardware system. The mainwork includes the design of test bench, the selection of sensor, signal conditioning moduleand data acquisition card.(4) To develop software platform based on virtual instrument, the platform not only achieved the function of all kinds of signal acquisition, display and data storage on the testbench, and realized the function of data processing. Using various methods of data processingand feature extraction to the signal from the test bench, includes data playback, digital filter,time domain analysis, frequency domain analysis, histogram analysis, autocorrelation analysis,wavelet analysis, manifold learning method. At the same time, support vector machine is alsoused to evaluate the effectiveness of data processing and feature extraction of each method.(5) To verify the reliability and practicability of the system through the test. By using thisplatform can greatly simplify the experiment and data processing, and the function of thesystem is stable,reliable and open. All this works lay the reliable foundation for research ofthe fault diagnosis method based on energy dissipation and subsequent fault diagnosis systemdevelopment.