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Fault Monitoring and Diagnosis Method for Parallel Test Run

A technology of fault monitoring and diagnosis method, which is applied in the direction of measuring device, engine test, machine/structural component test, etc. It can solve problems such as fault monitoring and diagnosis of multiple engines that are not applicable in parallel, so as to ensure reliability and improve Accuracy, the effect of improving the running accuracy

Active Publication Date: 2016-03-16
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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Problems solved by technology

[0003] In order to solve the technical problem that the current fault monitoring and diagnosis method for a single engine is not applicable to the fault monitoring and diagnosis of multiple parallel engines, the present invention provides a fault monitoring and diagnosis method for parallel test run

Method used

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  • Fault Monitoring and Diagnosis Method for Parallel Test Run

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Embodiment Construction

[0044] Hereinafter, the present invention will be described in detail by taking the fault monitoring and diagnosis system of four-machine parallel test run as an example.

[0045] figure 1Shown is the structural block diagram of the fault monitoring and diagnosis system, the system includes the engine's own sensors, acquisition main cable, data transfer cabinet, data acquisition equipment, data acquisition and backup computer, fault detection and diagnosis computer, sound and light alarm device, etc. In the system composition block diagram shown in the figure, the built-in sensors of the engine are installed in the important and main parts that the designers care about. In order to obtain the performance parameters of the test engine before leaving the factory, the built-in sensors are installed in the main parts. The data transfer cabinet completes the signal transmission between the data collected by the front sensor and the background data acquisition equipment. The engine’...

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Abstract

The invention provides a parallel trial run fault monitoring and diagnosing method. The method comprises the steps that (1) actual values of parameters are obtained; (2) the parameters are grouped; (3) the parameters are detected; (4) sensor failure detection is conducted; (5) parameter abnormal judgment is conducted. The method resolves the problem of the 'or' relationship between four engines and the problem of the 'and' relationship between the parameters of one single engine, improves accuracy of the fault monitoring and diagnosing system algorithm, reduces the phenomenon of mistaken report and reporting omission caused by algorithm and sensor failure and the like, and can monitor and diagnose different parameters of different engines simultaneously.

Description

technical field [0001] The invention relates to a fault monitoring and diagnosis technology, in particular to a parallel test run fault monitoring and diagnosis method. Background technique [0002] Various tests must be carried out before each space mission is launched. The ground thermal test test can directly obtain various parameters and performance by simulating the flight state, which determines the quality and even success of the rocket body during launch. It is necessary to introduce and adopt fault monitoring and diagnosis technology In order to reduce the risk of the test and protect the safety of the product and the test bench. The liquid oxygen kerosene engine fault monitoring and diagnosis system is designed for a single engine, and there are the following problems: first, it does not have the ability to monitor the running status of four engines at the same time; Positioning; Finally, for the parallel test run of four machines, it must be ensured that no false...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/00
Inventor 郑小萍付正蔡琳吴锦凤刘正李怡张辉
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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