The General Vibration Signal Testing And Analyzing System For Rotating Machine

With the development of the science technology, the request is more and more high for the mechanical running speed, loading ability, work life span etc. aspect, the vibration problem is the most problem in machine equipments, people's understanding to the vibration bane is more and more thorough, so the research of vibration testing and vibration signal analyzing are put forward a more and more high request.This text introduced the purpose and meaning to develop the technology of device status monitoring, the present developing status and the trend. The article discussed mechanical vibration diagnosis theory, including the classification of mechanical vibration, the sampling principle of rotating machine vibration signal, the method of signal pretreatment, the basic characteristic measure of the rotating machine vibration analyzing, the common method of signal analyzing. A general vibration signal testing and analyzing system for rotating machine is developed based on the methods.The text put out the project that using Visual C++ develop the vibration signal testing and analyzing system under Windows Xp, and Detailed discuss the design ideas, design scheme, the realization of software, the pivotal technique.The system is compatible with the various different types A/D converters, carry out the functions of the vibration signal sampling, the saving of data file, the timely wave showing, the configuration table edit, the former data return and data analysis etc. The functions of signal analysis include the time field Statistics analysis, the time field mutual analyzing, the frequency spectrum analyzing, the relevant analysis, the transmission function analysis, the demodulating analysis, and the short Fourier transformation of the time and frequency field etc.Experiments verify that the system carry out stably and credibility, various functions is achieved, has precise analyzing results, high calculating speed and high precision, the expected targets have been reached.