Virtual simulation test method

Abstract

The invention provides a virtual simulation test method. The virtual simulation test method comprises constructing a test model and performing failure analysis on the constructed model. The virtual simulation test method is feasible and effective in the evaluation of modeling analysis of a product testability design, and can be used for evaluating the product testability design in related fields, so that the testability design is improved; the inherent testability of products is improved; and valuable suggestions are given to further failure diagnosis of equipment and optimization of an existing test method. Through implementation of the virtual simulation test method, the failure detection and isolation time can be shortened greatly, so that the maintenance time is shortened greatly; technical requirements on maintenance personnel are lowered; the task reliability is improved; the use efficiency of a system and the equipment is increased; and the cost in a life cycle is lowered. A failure detection rate (FDR) can be up to 95-98 percent; a failure isolation rate (FIR) can be up to 95-99 percent (isolation to a single LRU); and a false alarm rate (FAR) can be up to 1-5 percent.

Description

technical field [0001] The invention relates to a virtual simulation testing method, which belongs to the technical field of simulation testing. Background technique [0002] GJB2547-95 "Equipment Testability Outline" defines testability (Tset-ability) as a design feature that a product can timely and accurately determine its working status (workable, non-workable, performance degradation) and isolate its internal faults. From the definition of testability, we can see that the goal of testability is to enable it to have the following capabilities: One is the state monitoring capability. Real-time monitoring of the technical status of the system during operation, display and storage of fault information, and alarm when necessary (status monitoring); the second is the ability to check performance, check whether the system can be put into normal operation, whether there is a fault, and give corresponding instructions and maintenance Post-inspection, etc. (fault detection); the...

AI Technical Summary

Problems solved by technology

The testability prediction method commonly used in engineering is implemented in accordance with the steps of drawing functional block diagrams, structural hierarchy diagrams, test flow charts, obtaining reliability information, filling in testability and BIT prediction forms, calculating relevant indicators, and writing prediction reports. The process is cumbersome and the workload is heavy. , and it is not easy to automate the process

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