基于信号分析的纯电动客车 失效调查方法.

To solve the problem that the correlation characteristics between the pure electric bus failure and the main faults of motor, battery and electric control systems could not be accurately elucidated by traditional failure investigation method, a new method based on signal processing was proposed, Based on the main failure types of pure electric bus and the main faults of motor, battery and electric control systems, the causal relationship between failure types and main faults of motor, battery and electric control systems was initially established, To further clarify the system failure point, the model of the pure electric bus including motor, battery and electric control systems was established, The artificial failures of pure electric bus were modeled by setting the main faults of motor, battery and electric control systems, The signals measured easily by system were analyzed, and the typical signal characteristics of different system faults were revealed, The correlation characteristics between the pure electric bus failure and the main faults of motor, battery and electric control systems were determined, and a new failure investigation method of pure electric bus was formatted. The results show that the proposed method can effectively reveal the relationship between the pure electric bus failure types of power loss, fire and out of control and the main faults of motor, battery and electric control systems. [ABSTRACT FROM AUTHOR]