Modeling of an Attenuation Characteristics of the Damper Used for Micro Vibration of a Car Body (Fourth Report)

- Prediction of Vibration Characteristics of Real Car Frame Based on Transfer Function Synthesis Method and Measurement -

Abstract

An estimation method based on the transfer function synthesis method for the vibration response of a real vehicle frame equipped with a micro vibration suppressor is developed and presented. Firstly, a measurement method of the excitation forces inputted to the frame through suspension is presented. Next, it is shown that the estimated and measured results of the vibration at the evaluation point agree in the accuracy of practical usage in a low frequency range between 4 and 20Hz sensitive to the ride quality. Lastly, a usefulness of this proposed method is verified from results of estimation accuracy and good relationship with the sensitive evaluation by professional test driver.