Improved correlation matrix analysis method based on structural hierarchical relation

A technology of correlation matrix and analysis method, applied in the field of improved correlation matrix analysis based on structural hierarchical relationship, can solve problems such as rapid formulation of unfavorable diagnosis strategies, inability to calculate fault detection rate and fault isolation rate, waste of computing resources, etc.

Active Publication Date: 2011-11-16
天航长鹰(江苏)科技有限公司
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Problems solved by technology

However, the correlation matrix generated by the existing commercial software TEAMS is modeled on the lowest level of faults and tests. The correlation matrix thus established has a huge set of tests and faults. For each fault, it is necessary to monitor all This is not conducive to the rapid formulation of di

Method used

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  • Improved correlation matrix analysis method based on structural hierarchical relation
  • Improved correlation matrix analysis method based on structural hierarchical relation
  • Improved correlation matrix analysis method based on structural hierarchical relation

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Embodiment

[0191] This embodiment takes a certain computing system as an example to illustrate an improved correlation matrix analysis method based on structural hierarchical relationships proposed by the present invention, which specifically includes the following steps:

[0192] Step 1. Construct the structural level information of the system:

[0193] The system configuration of the computing system in this embodiment is as follows Figure 6 As shown, there are two subsystems in the system: the main working subsystem and the backup working system. The main working subsystem includes 2 field replaceable units (LRM): 1# power module and 1# data processing module, and the backup working subsystem includes 2 LRMs: 2# power module and 2# data processing module.

[0194] According to the above analysis, construct the system structure level information UM, a total of 7:

[0195] UM 1 = computing system;

[0196] UM 2 = computing system / main working subsystem;

[0197] UM 3 =Computing ...

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Abstract

The invention provides an improved correlation matrix analysis method based on a structural hierarchical relation. The method comprises the following steps of: constructing the structural hierarchical information of a system; processing failures; processing tests; establishing an initial correlation matrix; judging correlation between an expansion failure and an expansion test in each structural hierarchy; and establishing an improved correlation matrix. The method can selectively comprise the following steps of: computing the failure detection rate of a specific structural hierarchical object; and computing the failure isolation rate of the specific structural hierarchical object. By the method, the conventional two-value correlation matrix is changed into a three-value correlation matrix, so a plurality of tests which are structurally uncorrelated with the failures can be eliminated, the quantity of the tests to be detected is reduced in the period of failure diagnosis, a large number of computation resources are saved, convenience is provided for quick failure diagnosis, and the computation of the failure detection rate and the failure isolation rate of any system hierarchical unit can be realized by the improved correlation matrix.

Description

technical field [0001] The invention belongs to the technical field of testing, and in particular relates to an improved correlation matrix analysis method based on structural hierarchical relations. Background technique [0002] Testable modeling is an important part of testable work in aerospace and other engineering fields. Through testability modeling and analysis, a correlation matrix that reflects the relationship between faults and tests can be obtained. At present, there is already a commercial software TEAMS that supports test modeling and generates correlation matrices. Using the correlation matrix, on the one hand, it can be used as diagnostic knowledge in the actual diagnosis process, and on the other hand, it can be used to evaluate the diagnostic ability. [0003] In engineering practice, the existing correlation matrix analysis method has the following disadvantages. First, most of the tests and faults in the actual system belong to different structural uni...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 石君友王璐侯文魁王风武
Owner 天航长鹰(江苏)科技有限公司
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