我国机床工业产品性能及实力分析

The Research of Motor Fault Diagnosis in Multi-fault Coupling Mode Based on the Artifical Immunity System

针对电机的结构和故障特点,借鉴免疫系统中抗体不仅能被抗原识别,也能被其它抗体识别的特点,对传统阴性选择算法进行改进,建立了反馈免疫算法模型,并将其应用于电机多故障耦合模式下的精确诊断。该算法通过检测器间激励度矩阵反映各个故障间的相互耦合效应,从而获得多故障耦合情况下的电机故障特征;诊断过程中综合分析电机的机械和电气特征可有效避免误诊和漏诊的情况发生,提高诊断的准确率。对JSZ148-4型三相异步电动机的诊断实例表明了本文所提出算法的正确性和实用性。

Use for reference the character of that the antibody not only can be discriminated by antigen ,but also can be discriminated by the other antibody in the immunity system. A feedback immunity arithmetic model considering cost of structure and fault characteristic of motor is proposed. The arithmetic is applied tothe motor fault diagnose in the mutil-fault coupling mode. In this arithmetic, the stimulate degree matrix between detecting organs is used to reflect the coupling effect between the different fault types, and the fault character of multi-fanh mode can be obtained through the stimulate degree matrix. Integrating the electric and mechanical character of motor into fault diagnosis can enhance the veracity of fault result, The proposed model and arithmetic are applied to the fault diagnosis of JSZ148 -4 type motor, the results verify the correctness and practicability of them.