A Design Method for Vibration Reliability of Rail Transit Electronic Products

Abstract

The invention discloses a method for designing vibration reliability of rail transit electronic products, which comprises acquiring vibration excitation frequency information in an actual operating environment of rail transit electronic products; obtaining product natural frequency information based on an initial design scheme of rail transit electronic products; Perform matching analysis on the natural frequency information and the vibration excitation frequency information. When the matching condition that the natural frequency avoids the vibration excitation frequency is met, the initial design scheme is determined to be the vibration reliability design scheme; otherwise, the quality and / or the product in the initial design scheme are adjusted or stiffness for scheme optimization until the vibration reliability design scheme is determined. The design method provided by the invention can propose a design scheme satisfying vibration reliability, can minimize the risk of product resonance during operation, and improve the operation reliability of rail transit electronic products.

Description

technical field [0001] The invention belongs to the technical field of rail transit electronic product design, in particular to a method for designing vibration reliability of rail transit electronic products. Background technique [0002] Vibration is one of the important factors affecting the normal operation of electronic products in the rail transit industry. During the storage, transportation and use of products, the impact of vibration on product operation reliability is ubiquitous. Statistics show that the failure of rail transit electronic equipment due to environmental factors accounts for about 51% of the total failure rate, and vibration reliability factors account for 14% of the failure rate. Judging from the on-site quality problems of existing rail transit products, some of them are related to strong vibration. With the rapid development of my country's high-speed railway transportation, the rail transportation industry has also put forward higher and higher r...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, although the rail transit industry has carried out some research on the vibration reliability of products, and found and solved some vibration-related problems, it still stays in the remedy after the product reliability problems are exposed, and does not start from the source of product development and design. Avoid Vibration Reliability Issues

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