基于小波变换与灰色理论相结合的交流接触器电寿命预测

摘要

为实现对交流接触器电寿命的准确诊断，提出了一种基于小波变换与灰色GM（1，1）模型相结合的交流接触器电寿命预测方法。采用小波变换对信号进行多分辨率分析提取特征量，再基于灰色GM（1，1）模型得出预测结果。通过自主搭建交流接触器通断试验平台进行全寿命试验，验证了方法的合理性。结果表明，提出的方法能够准确预测出交流接触器的电寿命状态。%For diagnosing the electrical life of AC contactor accurately,a method of electrical lifetime prediction of AC contactor based on wavelet transform and grey GM(1 ,1 )model was proposed.To extract feature vector,the wavelet transform was used in the signal multi-resolution analysis.Based on the GM(1 ,1 )model,the predicted result was calculated.To verify the rationality of the method,the experimental platform for the whole life experiment of AC contactor was self-constructed.The result of the test shows that the proposed method can predict the life state of AC contactor effectively.