Method for constructing comprehensive working condition vibration spectrum and long-life test spectrum of armored vehicle

Abstract

The invention discloses a method for constructing a comprehensive working condition vibration spectrum and a long-life test spectrum of an armored vehicle, and relates to the field of data processing methods. The method for constructing a comprehensive working condition vibration spectrum includes obtaining a single working condition measured spectrum, a first reserve coefficient and The first relationship and the second relationship between the measured spectrum of the comprehensive working condition; the relationship between the first reserve coefficient and the measured spectrum of the comprehensive working condition is obtained according to the first and second relations; the first RBF neural network is trained to obtain the current first reserve coefficient; obtain the first relationship and the second relationship between the standard spectrum of single working condition, the second reserve coefficient and the standard spectrum of comprehensive working conditions; obtain the relationship between the second reserve coefficient and the standard spectrum of comprehensive working condition according to the first and second relationship The relationship between ; train the second RBF neural network to obtain the current second reserve coefficient; obtain the reserve coefficient according to the current first and second reserve coefficients, so as to obtain the measured spectrum and normative spectrum of the actual comprehensive working condition. The invention improves the accuracy and can simulate the real vibration environment more effectively.

Description

technical field [0001] The invention relates to the technical field of armored vehicle vibration spectrum data processing methods, in particular to a method for constructing armored vehicle vibration spectrum under comprehensive working conditions and long-life test spectrum. Background technique [0002] Armored vehicles belong to military vehicles and can be driven on various roads. They are mainly used for transportation, reconnaissance and mobile attacks. Therefore, their vibration not only affects the fatigue and work efficiency of combat personnel, but also affects the weapons installed on the vehicle. attack accuracy. If the whole vehicle vibrates too much, the service life of the device will be shortened, or even the device will be damaged. [0003] In order to analyze the vibration performance of armored vehicles, the test method is mainly used to test the structural strength and durability of armored vehicle frames. For this reason, long-life simulation tests are...

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Problems solved by technology

[0004] However, the random vibration environment measurement data induction method stipulated in the standard GJB / Z 126-99 "Vibration and Shock Environment Test Data Induction Method" can only summarize the random vibration data of a single working condition, and obtain the random vibration specification spectrum

However, armored vehicles will have different comprehensive working conditions such as different road surfaces and different vehicle speeds when they actually drive, so the above-mentioned method for single working conditions cannot be directly used for comprehensive working conditions, and thus cannot be directly used for long-life simulation tests.

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