Electro-hydraulic vibration method and vibration characteristic analysis of the electro-hydraulic vibration system controlled by an alternating distribution valve

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (18) : 143-149.

ZHAO Guochao1,2，LI Nanqi1,3，WANG Hui1,2，ZHANG Jianzhuo1,2，ZHANG Changshuai1

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Abstract

In order to explore a new way to realize active excitation and enrich the variety of electro-hydraulic vibration methods, an electro-hydraulic vibration method using an alternating distribution valve to control a hydraulic cylinder is proposed. The alternating distribution valve's structure is designed and the mathematical model of distribution process is established. The vibration mechanism of the electro-hydraulic vibration system controlled by the alternating distribution valve is analyzed. Furthermore, the alternating distribution valve's distribution signal is obtained by Matlab numerical calculation, and the AMESim simulation model of the electro-hydraulic vibration system controlled by the alternating distribution valve is established. Moreover, the alternating distribution valve controlled electro-hydraulic vibration bench is developed to test the influence of oil supply pressure and motor speed on the electro-hydraulic vibration system's vibration characteristics. The research results show that oil supply pressure and motor speed significantly affect the electro-hydraulic vibration system's vibration characteristics. With the oil supply pressure increase, the vibration displacement and acceleration of the electro-hydraulic vibration system increase by 8.14% and 5.57%, respectively.With the motor speed increase, the vibration displacement and acceleration of the electro-hydraulic vibration system decreased by 79.71% and 58.21%, respectively. The average error between AMESim simulation and experiment test of the electro-hydraulic vibration system is 8.72%. The overall trend is consistent, verifying the simulation model's correctness and the feasibility of this vibration method.
Key words：alternating distribution valve；electro-hydraulic vibrator exciter；vibration characteristics；AMESim simulation；experimental study

Key words

alternating distribution valve / electro-hydraulic vibrator exciter / vibration characteristics / AMESim simulation / experimental study

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ZHAO Guochao1,2，LI Nanqi1,3，WANG Hui1,2，ZHANG Jianzhuo1,2，ZHANG Changshuai1. Electro-hydraulic vibration method and vibration characteristic analysis of the electro-hydraulic vibration system controlled by an alternating distribution valve[J]. Journal of Vibration and Shock, 2022, 41(18): 143-149

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