A fault diagnosis method for solid rocket motor impact test
An impact test and fault diagnosis technology, applied in rocket engine devices, machines/engines, mechanical equipment, etc., can solve problems such as easy omission of small content, large workload, and lack of targeted system structure analysis for fault diagnosis methods. The effect of shortening the search time, reducing a lot of workload, and reducing the workload of test personnel
Active Publication Date: 2021-07-20
内蒙航天动力机械测试所
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is a fault diagnosis method for solid rocket motor impact test, in order to solve the problem that the existing fault diagnosis method does not conduct system structure analysis in a targeted manner, has a large workload and easily misses tiny content
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[0089]Specific example: fault diagnosis of a certain type of solid rocket motor impact test
[0090] A certain type of solid rocket motor requires two axial half-sine wave shocks, the peak acceleration is 7g±1.05g, the pulse duration is 11ms±1ms, the total weight of the engine and the test tool is 300kg, and the test uses an impact test bench with a thrust of 5 tons , the moving coil of the test bench is 150kg, the position of the control point has been given in the mission statement, and it is located at the center of the connection between the test tooling and the engine. Acceleration sensors, test cables, test systems, and measurement and control systems have all been connected and debugged. The first impact curve as Figure 7 As shown, observing the test curve, it is found that the peak value of the curve does not reach the set peak value, which belongs to the aforementioned third abnormal curve state.
[0091] According to the method of the present invention, it is dete...
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The invention relates to a fault diagnosis method for a solid rocket motor impact test, including summarizing the abnormal state of the curve, determining the initial cause range of the abnormal curve, sorting out the working links of the impact test, searching for the basic cause, determining the basic cause of the abnormal curve and analyzing the solution measures. The invention determines the initial causes of the abnormal curves by analyzing the abnormal forms of the solid rocket motor impact test curves, and then conducts targeted analysis of the test work links, and finally finds the basic cause of the failure. The invention effectively reduces the workload of the testers, shortens the time for troubleshooting of the solid rocket motor impact test, shortens the test cycle, reduces a lot of workload, and because it is targeted, it is not easy to miss the relevant tiny content. The foundation of the test was successfully carried out.
Description
technical field [0001] The invention relates to a fault diagnosis method, in particular to a fault diagnosis method for a solid rocket motor impact test. Background technique [0002] The solid rocket motor shock test is mainly used to evaluate and verify the structural and functional characteristics of the mechanical shock environment that it may withstand during its life cycle. The shock environment can adversely affect the structural and functional integrity of the entire engine. The degree of adverse effects generally changes with the magnitude and duration of the shock. When the shock duration is consistent with the reciprocal of the natural frequency of the equipment or the main frequency component of the input shock environment waveform is consistent with the natural frequency of the equipment, the impact on the impact will increase. Adverse effects on the structural and functional integrity of equipment. During the entire life cycle of the engine, it is inevitable ...
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IPC IPC(8): F02K9/96
CPCF02K9/96
Inventor 王世辉云杰黄家骥宋宇龙李铁巩红艳石鹏
Owner 内蒙航天动力机械测试所