基于门限关联度的自行火炮传动箱性能检测方法研究

Research on Wheel-box Condition Detecting Basedon Theory of Threshold Relevance Degree

用振动加速度传感器获取传动箱振动信号,应用统计学方法建立了传动箱标准正常状态模式,然后计算振动信号与标准正常模式的门限关联度,结果表明,所得门限关联度可以反映传动箱当前的性能状况。全部检测过程均在计算机上进行,速度快、可靠性高。

Wheel-box is an enclosed, sophisticated gearmachine. There are often manifold phenomena from onefault or one phenomenon from several faults. So it isdifficult to determine the condition of wheel-box, and itis more difficult to do fault-diagnosis. Because there aremany fault phenomena samples, it is very difficultto establish the standard fault pattern. Comparatively itis easy to establish the standard norm pattern from normsamples. According to theory of gray system, we canestablish a practicable norm pattern with the method ofmultiple parameter relevance analysis by selecting properparameters. Thus we can calculate the relevance degreeof detected mode with stadard norm pattern, and estimatethe condition of the detected system depending on thenumerical value of relevance degree. If the parametersare selected properly, and the standard norm pattern isestablished properly, it could get a good detecting result.In our research, a wheel-box was tested based on theoryof threshold relevance degree and it gave a successfuloutcome.