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Model of the Secondary Path between the Input Voltage and the Output Force of an Active Engine Mount on the Engine Side

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  • Henghai Zhang
  • Wenku Shi

Abstract

The active engine mount (AEM) provides an effective solution to improve the acoustic and vibration comfort of a car. The same AEM can be installed for different engines and different vehicle bodies and attenuates the engine vibration, which is one of the most pressing challenges. To study this problem, this paper develops a mathematical model of a secondary path between the input voltage and output force of the AEM on the engine side considering the frequency-dependent characteristic of the stiffness, which includes the structure parameters of the AEM as well as the dynamics of the actuator, the fluid in the inertia track, the foundation (vehicle body), and the attenuated vibrating object (AEM preload or engine). The proposed model is validated by three test cases without vibration excitation, which are performed with different AEM preloads and foundations. The AEM is considered as an active part and passive part, the mass of which is determined experimentally. Parameter effect on the dynamic characteristics of the secondary path of the AEM is studied based on three tests and a numerical simulation.

Suggested Citation

  • Henghai Zhang & Wenku Shi, 2020. "Model of the Secondary Path between the Input Voltage and the Output Force of an Active Engine Mount on the Engine Side," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-16, March.
    • Handle: RePEc:hin:jnlmpe:6084169
    DOI: 10.1155/2020/6084169
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