Real-time hybrid test method for hunting dampers of high-speed vehicles

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (22) : 99-104.

DOU Xiaoliang1，ZHANG Baoan1，ZHENG Huan2，LI Haitao1，HUANG Chao1，WANG Zhen3，WANG Tao2

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Abstract

In order to carry out low-cost and high-precision experimental research on dampers of high-speed vehicles, a real-time hybrid test method of hunting dampers was conceived. The hunting damper is taken as the specimen and physically tested, while the rest of the vehicle dynamic system is numerically simulated. Through real-time calculation and real-time loading on the specimen, the original dynamic system is recovered. The impact of the loading system time delay on test results was studied, and effects of the delay compensation method with a constant speed assumption and an adaptive compensation method were compared. The results show that the time-delay compensation is necessary for this method. The adaptive time delay compensation method exhibits better compensation effect than the other one. This research can provide testing methods for the dynamic performance analysis of hunting dampers and evaluation of the hunting performance of high-speed vehicles.
Key words: real-time hybrid test; hunting damper; time delay compensation; critical speed

Key words

real-time hybrid test / hunting damper / time delay compensation / critical speed

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DOU Xiaoliang1，ZHANG Baoan1，ZHENG Huan2，LI Haitao1，HUANG Chao1，WANG Zhen3，WANG Tao2. Real-time hybrid test method for hunting dampers of high-speed vehicles[J]. Journal of Vibration and Shock, 2022, 41(22): 99-104

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