Random vibration test frequency band division hybrid control method

Abstract

The invention discloses a random vibration test frequency band division hybrid control method, particularly to a frequency band division hybrid control method with limit control. The method can selectdifferent control modes to realize hybrid control in different frequency bands and comprehensively consider the response of a limit control point to perform balance correction on a driving signal, issuitable for a random vibration environment test, and comprises the following steps: obtaining a control response spectrum under hybrid control according to a frequency band division control segment,and obtaining a test system transfer function under the magnitude according to the prior art; comparing limit control point response with a limit target parameter to obtain a driving signal adjustment value; and finally, correcting the driving spectrum according to the driving signal adjustment value, and carrying out equalization correction until a test condition magnitude is reached.

Description

Technical field [0001] The present invention belongs to the field of digital signal processing, and more particularly to a random vibration test division segment mixing control method. Background technique [0002] Random vibration test As an effective means of simulating the vibration environment of the test product, it is an important phase of the development of vibration test. Different control methods have been formed in the development of the test technology, such as single-point control, multi-point control, etc., and different control methods can produce different test effects on the test parts. In actual engineering applications, or because of the differences in the response of each part of the test parts, the test parts have different trial effects in each frequency band, especially for some important components, need to avoid the ability of the product to be protected by strong mechanics stress Damage, but the prior art does not have a method of mixing control. [0003]...

AI Technical Summary

Problems solved by technology

In actual engineering applications, or because of the difference in the response of each part of the test piece, it is expected that the test piece will have different test effects in each frequency band during the test, especially for some important components, it is necessary to use limit control to avoid excessive mechanical stress on the product. damage, but the prior art does not have a method for mixing control

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