基于模糊层次分析法的机床故障分析

Fuzzy Fault Analysis Method of Machine Tool based on Analytic Hierarchy

机床在运行期间出现故障的情况较为复杂,为了准确找到机床的故障原因,在机床工作时最可能出现故障的位置进行逐步排查,不仅很难找到原因也消耗工作时间。结合机床出现故障的可能情况,采用层次分析法分析机床故障的可能性,将所有可能的故障因素进行层次化,建立起层次模型,然后根据模糊集理论建立起评价体系,对每一个可能的故障进行具体的分析,找到最可能出现的故障位置,并对机床进行故障诊断。它为提高机床的工作效率和机床的预测维修提供了一种新的方法和依据。

The fault of machine tool during it running period is complex.In order to find its fault reason accurately,gradual investigation to the positions which are mostly probable to break down should be done.However,it could not only find the reason difficultly but also consume the work time.Combined with the possible emergence of fault with machine tool,it uses AHP analysis to the machine fault and makes all possible fault factors hierarchical to establish a hierarchy model.Then according to the fuzzy set theory,it establishes the evaluation system to analyze every possible fault specifically.After that,it can find out the most possible positions which break down,and do fault diagnosis to the machine tool.It provides a reliable method and scientific basis for the improvement of work efficiency and predictive maintenance of machine tool.