Controller, test system and test method for arm frame vibration performance test

Abstract

A controller (100) for use in a boom vibration characteristic test, comprising: a vibration-excitation control unit (10) for use in emitting a vibration-excitation signal to execute a vibration-excitation; a signal-collecting unit (20) for use in collecting the vibration-excitation signal emitted by the vibration-excitation control unit (10) and a vibration signal of a boom acquired by exciting the boom on the basis of the vibration-excitation signal, and in storing the vibration-excitation signal and the vibration signal into one set of vibration data; a vibration characteristic analysis unit (30) for use in scheduling the vibration data stored by the signal-collecting unit (20) and in analysis via computation to acquire vibration characteristics of the boom. The vibration-excitation signal and the vibration signal respectively are used for the boom, which is a vibration system, as an excitation signal and a response signal, both are analyzed via computation, and various vibration characteristics of the boom are thus acquired. Also provided are a boom vibration characteristic testing system and testing method.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a controller for testing the vibration characteristics of a jib, a system for testing the vibration characteristics of a jib, and a method for testing the vibration characteristics of a jib. Background technique [0002] Construction machinery with a boom (such as a concrete pump truck) has a large extension of the boom when it is working. It is a cantilever beam structure in mechanics, and the force is more complicated and it is prone to vibration. The vibration of the concrete pump truck boom is one of the important factors affecting the performance and construction quality of the pump truck. If the vibration is too large, the hose at the end of the boom frame cannot be positioned accurately, and the dynamic stress generated at the same time directly affects the fatigue life of the pump truck. With the development of high-pressure, large-displacement pumping and ultra-long ...

AI Technical Summary

Problems solved by technology

In the prior art, there is no method and system for systematically analyzing and testing the vibration of the boom system, but the vibration test of the boom system and the analysis of the collected experimental data can accurately obtain the vibration characteristics of the boom system. It is a necessary prerequisite for boom vibration control and system dynamic parameter optimization

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