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A method for automatic fault diagnosis and inspection of electronic scanning valve pressure measurement system

A technology of electronic scanning and system failure, applied in the measurement of fluid pressure, measurement device, aerodynamic test, etc., can solve the problems of failure to expose, large temperature fluctuation, difficult sensor judgment, etc., to achieve automatic identification and intelligent diagnosis , the effect of improving quality and efficiency

Active Publication Date: 2018-05-01
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology

[0006] It is precisely because of the above-mentioned design of the electronic scanning valve pressure measurement system that the system has the following problems: the current working coefficient obtained by real-time calibration fluctuates greatly with temperature, and it is difficult to use it as the basis for judging whether the current sensor working status is good or bad; The real-time calibration and test inspection of the pressure system use the same standard source and air path, so the fault cannot be fully exposed through the test inspection; in the wind tunnel pressure test, there are usually many measurement points, the pressure measurement module, and the pressure measurement air path are enclosed in the inner cavity of the model , so it is difficult to diagnose and accurately locate the fault of the pressure measurement system

Method used

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  • A method for automatic fault diagnosis and inspection of electronic scanning valve pressure measurement system
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  • A method for automatic fault diagnosis and inspection of electronic scanning valve pressure measurement system

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Embodiment Construction

[0039] The present invention will be further described below through specific implementation examples.

[0040] If a wind tunnel has a total of 32 pressure measurement modules with 64 points, and a certain test, the total number of pressure measurement points on the model is 630 points, so this test needs to build an active pressure measurement system with at least 10 pressure measurement modules.

[0041] The electronic scanning valve pressure measurement system automatic diagnosis and inspection method includes the following steps:

[0042] a. Collect the serial numbers, factory work coefficients, ranges, etc. of all 32 pressure measurement modules in the electronic scanning valve pressure measurement system, and establish a characteristic database composed of the factory parameters of the 32 pressure measurement modules, m=32;

[0043] b. According to the pressure measurement requirements of 630 points in the test, 10 pressure measurement modules were selected from 32 press...

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Abstract

The invention discloses an electronic scanning valve pressure measuring system fault automatic diagnosis detection method. By adopting the above mentioned method, the fast and intelligent diagnosis detection of the electronic scanning valve pressure measuring system can be realized, and the device faults of the pressure measuring system can be found out and located timely. By adopting the method, the automatic identification and the intelligent diagnosis of the electronic scanning valve pressure measuring system can be realized, especially the fast locating and the fault diagnosis of the totally-enclosed pressure measuring module can be realized, and therefore the quality and the efficiency of the pressure measuring test can be improved.

Description

technical field [0001] The invention belongs to the technical field of aerodynamic wind tunnel tests in the aerospace industry, and relates to a method for automatic fault diagnosis and inspection of an electronic scanning valve pressure measurement system. Background technique [0002] The pressure test is one of the basic test methods in the wind tunnel test. Its purpose is to provide the basis for the calculation and analysis of the structural strength of the aircraft, the analysis of the flow characteristics and the aerodynamic design. It is an important means to study the aerodynamic characteristics of the aircraft and obtain the aerodynamic load. The electronic scanning valve pressure measurement system is a system that can realize multi-point pressure acquisition and processing. It has the outstanding advantages of multiple measurement points, fast scanning speed, and high measurement accuracy. Therefore, it is widely used in wind tunnel pressure measurement tests. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L27/00G01M9/06
CPCG01L27/007G01M9/065
Inventor 谢艳蒋鸿李平杨国超张林张鹏孙宁杨振华王瑞波陈宏涛陈俊明严翔蒋婧妍殷造林李燕君
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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