Test data based health state assessment method for solid rocket engine

A technology of solid rockets and health status, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as inability to reflect health status and changing trends

Inactive Publication Date: 2016-08-17
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology

In view of this characteristic, in general, only the health status of the solid rocket motor during each non-destructive in...

Method used

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  • Test data based health state assessment method for solid rocket engine
  • Test data based health state assessment method for solid rocket engine
  • Test data based health state assessment method for solid rocket engine

Examples

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Embodiment Construction

[0049] The following examples are given to describe the present invention in detail.

[0050] Such as figure 1 As shown, the process of the solid rocket motor health status assessment method based on test data is as follows:

[0051] (1) Classification of health status

[0052] In order to better describe the health status of solid rocket motors, from the perspective of health management, the health status of solid rocket motors is divided into five levels, namely: good, normal, attention, deterioration and sickness.

[0053] (2) Test parameters and weights

[0054]The debonding area of ​​the solid rocket motor charge is used as the health status index, as shown in Table 1. At present, it has been one year since the last non-destructive testing, and the non-destructive testing data will directly reflect its health status. When a certain data exceeds the specified threshold, the engine needs to be repaired, so the weight of any data is equal and divided equally. That is, th...

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Abstract

The invention provides a test data based health state assessment method for a solid rocket engine. The method specifically comprises the steps of dividing health state grades of the solid rocket engine; determining test parameters and weights; performing unitary quantification processing on test data; correcting a unitary quantification result by utilizing a time correction function; determining a membership degree in a triangular fuzzy function; determining basic credibility; and synthesizing distribution credibility of different health state grades.

Description

technical field [0001] The invention relates to a method for evaluating the health state of a solid rocket motor based on test data, and belongs to the technical field of health state evaluation. Background technique [0002] As the power system of various missiles, the solid rocket motor's health status will directly affect whether the missile can fly normally and finally hit the intended target. At present, the health status of various types of missile solid rocket motors is judged by non-destructive testing methods to judge the size of defects such as cracks and debonding. The biggest difference between missiles and other equipment is "long-term storage, a small amount of testing, and one-time use." In view of this characteristic, in general, only the health status of the solid rocket motor during each non-destructive inspection can be obtained, and it cannot reflect the health status and changing trend in the time period between the two inspections. To this end, a test...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 赵汝岩王丽婷于亮赖建伟许建国
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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