The multi-level linear programming method is used to optimize the diagnosis method of air compressor oil faults, and the multi-level optimization method model of air compressor oil induction fault diagnosis is established. Through spectrum analysis of oxidation abrasive of non-ferrous metals, the type and degree of air compressor faults were judged, and the non-destructive testing of air compressor was completed, which provided a solid theoretical basis for the study of air compressor faults diagnosis methods.

空压机是一种广泛用于冶金、矿山和机械制造二I二职业的机械动力设备，由于空压机结构杂乱，基金项目：南昌大学博士科研启动经费项目（06301043）；自然科学基金青年基金“根据SPC反馈质量特性的农机配备牢靠性稳健规划的研讨”（51305152）为机械与电子设备及配备自动化检测等。

Air compressor is a kind of mechanical power equipment widely used in metallurgy, mining and mechanical manufacturing I I occupation. Because of the chaotic structure of air compressor, the fund projects are: Nanchang University Ph.D. research start-up fund project (06301043); National Natural Science Foundation Youth Fund "Research on reliable and robust planning of agricultural machinery allocation based on SPC feedback quality characteristics" (51305152) for machinery and electronics. Equipment and equipped with automatic testing.

要研讨方向为信息仿真技能等常会发生毛病，尤其磨料磨损和疲惫磨损，而这两种机械毛病很难用惯例办法进行诊断，给空压机机械毛病修理带来很大的费事。笔者依据多层次线性规划办法，对空压机油液毛病诊断办法进行优化规划，建立了空压机油液归纳毛病诊断的多层次优化办法模型，并经过光谱剖析完成了空压机油液归纳毛病诊断办法的机械剖析，得到了机械毛病的光谱图，为空压机毛病诊断和修理技能供给了理论。

It is difficult to diagnose these two kinds of mechanical faults by routine methods, which brings a lot of trouble to the repair of mechanical faults of air compressors. According to the method of multi-level linear programming, the author optimizes the method of air compressor oil fault diagnosis, establishes a multi-level optimization method model of air compressor oil fault induction diagnosis, and completes the mechanical analysis of air compressor oil fault induction diagnosis method through spectral analysis, obtains the spectrum chart of mechanical fault, which provides the theory for air compressor fault diagnosis and repair skills. On.

压机油液归纳毛病诊断法空压机常见的机械毛病有5种，常见是磨料磨损和疲惫磨损，因此，应该对其进行实时监测。但空压机结构比较杂乱，运用一般的毛病诊断办法难以进行诊断。空压机的结构如所示。空压机杂乱结构暗示运用多层次光谱剖析油液归纳毛病剖析法，完成空压机毛病诊断。通常磨料磨损机械毛病伴随着磨料的脱落，它是常见的机械毛病，占毛病总和的50%左右吒笔者规划的空压机毛病检测计划如所示。

There are five kinds of common mechanical faults in air compressor, the most common are abrasive wear and fatigue wear. Therefore, real-time monitoring should be carried out. However, the structure of the air compressor is rather messy, and it is difficult to diagnose by using the general fault diagnosis method. The structure of the air compressor is shown. The chaotic structure of air compressor implies that the fault diagnosis of air compressor can be completed by using multi-level spectrum analysis oil induction analysis method. Usually abrasive wear mechanical fault accompanied by abrasive shedding, it is the most common mechanical fault, accounting for about 50% of the total defect, the author planned the air compressor defect detection plan as shown.

规划的多层次光谱剖析检测计划，主要对有色金属的磨粒进行实时检测，经过对支撑度、变化率以及猜测率的不同层次权重剖析，得到光谱剖析计划。终究选取Mo、Ca、P等6种金属作为有色金属磨粒检测金属，选取氧化磨粒作为毛病检测计划，经过对氧化磨粒的检测可以得到空压机毛病的光谱显示。

The planned multi-level spectrum analysis and detection plan mainly detects the abrasive particles of non-ferrous metals in real time. After analyzing the weight of different levels of support, change rate and guess rate, the spectrum analysis plan is obtained. After all, six kinds of metals such as Mo, Ca, P are selected as non-ferrous metal abrasive detection metals, and oxidation abrasive is selected as defect detection plan. After the detection of oxidation abrasive, the spectrum display of air compressor defects can be obtained.

约束条件为先求解个单层次问题，假定值为r/，将值的问题转换为假定；值无限逼近层次优化值r，机械毛病函数可以写成层次优化值r，函数方式可以写成制。因此可以构造出极小化函数：经过构造出抱负点法求解函数解，假定机械毛病频率函数为两个层次函数：3结语笔者运用多层次优化办法，完成了空压机油液归纳毛病诊断的无损检测，建立了空压机油液归纳毛病诊断的多层次优化办法模型，给出了线性规划多层次函数关系式和矩阵。并使用光谱剖析原理得到了空压机氧化磨粒的光谱图，为空压机毛病诊断和修理技能供给了技能支撑。

The constraint condition is to first solve a single-level problem, assuming the optimal value is r/, and then the problem of the optimal value is transformed into a hypothesis; the value approximates the optimal value of the hierarchy infinitely, and the mechanical defect function can be written as the optimal value of the hierarchy r, and the function mode can be written as a system. Therefore, the minimization function can be constructed: the ideal point method is constructed to solve the optimal solution of the function, and the frequency function of mechanical defects is assumed to be two hierarchical functions: 3. In conclusion, the non-destructive testing of inductive fault diagnosis of air compressor oil is completed by using multi-level optimization method, and a multi-level optimization method model of inductive fault diagnosis of air compressor oil is established, and a multi-level optimization method model of linear programming is given. Subfunction relations and matrices. The spectrogram of the oxidized abrasive particles of the air compressor is obtained by using the principle of spectral analysis, which provides technical support for the diagnosis and repair skills of the air compressor's faults.