Reliability design optimization method for avionic device

Abstract

The invention provides a reliability design optimization method for an avionic device. By means of the reliability design optimization method for the avionic device, the reliability index of the device can be practically and effectively promoted in the design stage. According to the technical scheme, the method comprises the following steps that three-dimensional digital prototype modeling is conducted according to an avionic device design scheme; on the basis of a three-dimensional digital prototype, environmental stress digital prototype modeling is conducted according to a device working load, an environmental load and design information relevant to device characteristics, and a model is corrected and verified; thermal environment stress, mechanical environment stress and the like of the avionic device are analyzed by referring to environmental conditions, environmental stress weak links of the device are searched, and corresponding avionic device design optimization is conducted; a fault physical digital prototype model is built, environmental stress analysis results are introduced to conduct device fault risk prediction, avionic device design optimization is conducted aiming at the reliability weak links occurring in the analysis process, and the reliability level of the avionic device is evaluated according to the optimized fault risk distribution situation.

Description

technical field [0001] The invention is mainly applied to the design of avionics equipment, and is a method for completing the design optimization of avionics equipment and improving the reliability of the equipment by using reliability analysis. Background technique [0002] Avionics equipment is technically difficult and systematic. The natural environment and mechanical environment are harsh, and the reliability requirements are getting higher and higher. How to improve and enhance the reliability of equipment in harsh environments has become a problem that must be faced. With the development of science and technology, the functional requirements of integrated avionics equipment are getting higher and higher, and the structure is becoming more and more complex, which makes the fault diagnosis of electronic equipment very complicated and the reliability is affected. At present, a large number of new technologies are used in avionics equipment, which are highly integrated,...

AI Technical Summary

Problems solved by technology

This will prevent the reliability optimization of the equipment from being completed in the design stage, resulting in multiple iterations of the design process, and may even fail to meet the reliability indicators in the test, causing iterations in the production process

As the integrated avionics equipment is becoming more and more complex, the reliability requirements are getting higher and higher, and the reliability is restricted by various factors, so it is difficult to guarantee it according to the current design method and control method.

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