Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (1): 50-60.doi: 10.13229/j.cnki.jdxbgxb20210592

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Mid⁃high⁃frequency active and passive dynamic characteristics of active hydraulic mounts with oscillating coil actuator

Rang-lin FAN1,2(),Zi-jian LIU1,Fu-liang MA2,Quan-fa WU3,4   

  1. 1.School of Mechanical Engineering，University of Science and Technology Beijing，Beijing 100083，China
    2.Shunde Innovation School，University of Science and Technology Beijing，Foshan 528399，China
    3.Anhui Eastar Auto Parts Co. ，Ltd. ，Tongling 246725，China
    4.Anhui Eastar Active Vibration Control Technology Co. ，Ltd. ，Tongling 246725，China
  • Received:2021-06-30 Online:2023-01-01 Published:2023-07-23

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Abstract:

Active hydraulic mount with an inertia track， decoupling membrane and oscillating coil actuator is taken as a research object， this paper focuses on the concise and effective expressing for the mid-high-frequency dynamic characteristics and corresponding parameters identification method. Based on the intrinsic properties that the natural frequency of the actuator mover is much higher than the one of the inertia track， and the fluid channel is closed due to the increase of fluid resistance in the mid-high-frequency bands， the degree of freedom （DOF） for the fluid channel is ignored， and a 1-DOF lumped parameter model is established. The concise expressions of the active and passive dynamic characteristics are obtained for the active hydraulic mount with oscillating coil actuator. It is revealed that the passive dynamics have three horizontal sections and the active dynamics have two horizontal sections， and these conclusions have been validated by experiments. Based on a high-frequency elastomer test system， combined with an appropriate clamping， a dynamic test scheme is provided， which avoids the development of a high-frequency test bench， and which can be used to obtain effective active and passive characteristics up to 400 Hz.

Key words: vehicle engineering, active hydraulic mount, oscillating coil actuator, active dynamic characteristics, passive dynamic characteristics, lumped parameter model

CLC Number: 

  • U464.1

Fig.1

Schematic diagram of active hydraulic mount with oscillating coil actuator"

Fig.2

Lumped parameter mechanical model for active hydraulic mount with inertia track and decoupling membrane"

Fig.3

Frequency division for active hydraulic mount with inertia track and decoupling membrane"

Fig.4

Passive dynamic characteristics test device of active hydraulic mount"

Fig.5

Test results of across-point passive dynamics of active hydraulic with inertia track and decoupling membrane"

Fig.6

Test rig for active dynamics of active hydraulic mount with inertia track and decoupling membrane"

Fig.7

Test results of active dynamics of active hydraulic mount with inertia track， decoupling membrane and oscillating coil actuator"

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