Abstract
In this study, we considered vibration reduction method using transfer function characteristics of operational TPA. Contribution was evaluated separately in each reference point, principal component, and transfer function of principal component. Countermeasure to the response signal was considered according to each characteristic. Floor vibration reduction of a model vehicle was performed to verify the efficiency. As a result, the vibration was reduced more with less additional weight comparing with a conventional method in which countermeasure was carried out focusing on only reference point signal. Consequently, the new method was found to be able to reduce the vibration more efficiency.