Mechanism and Solution of Abnormal Fluctuation of Vibration Test Magnitude
In view of the abnormal phenomenon of large fluctuations of the test control level in the vibration test industry,the control principle is analyzed.According to the analysis results,the test is verified.The test completely repeats the phenomenon of large fluctuations of the control level,and it is confirmed that the ultra-low magnitude and signal interference caused by special limit spectrum are the two direct causes of large fluctuations.On the basis of determining the direct cause,the root cause of the phenomenon is analyzed,and the solution measures are put forward and verified by experiments.The test results show that the solution is effective,and the increase of control freedom and the use of output hold can effectively avoid large fluctuations.The solution of this problem is helpful to improve the stability and safety of vibration test control.
vibration testcontrol exceptionfluctuatedegrees of freedomlimiting spectrumdisturb
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