论文部分内容阅读
灰色关联分析方法在机械设备故障诊断中广泛应用,以航空发动机的气路系统为研究对象,对典型的气路性能故障进行研究,提出一种改进的灰色关联分析方法,以PW4164/68发动机的典型涡轮故障为例验证方法的有效性;考虑航空发动机性能参数测量中的影响因素,对灰色关联分析方法的鲁棒性进行分析,研究表明:在一定的测量偏差范围内,灰色关联分析方法具有较高的鲁棒性;改进后的灰色关联分析方法在性能参数测量的相对偏差为0.24时还能准确地对发动机故障进行识别,因此改进措施有效地提高了发动机故障灰色识别方法的鲁棒性。
The gray correlation analysis method is widely used in the mechanical equipment fault diagnosis. Taking the aero-engine’s air-passage system as the research object, the typical air-way performance failure is studied. An improved gray correlation analysis method is proposed. The PW4164 / 68 engine The typical turbine fault is taken as an example to verify the validity of the method. Considering the influencing factors in the measurement of aeroengine performance parameters, the robustness of the gray correlation analysis method is analyzed. The results show that: within a certain range of measurement error, High robustness. The improved gray correlation analysis method can accurately identify the engine fault when the relative deviation of the performance parameter measurement is 0.24, so the improvement measures effectively improve the robustness of the gray fault identification method of the engine fault .