能動制御を用いた自動車用シートの乗り心地向上に関する研究（第1報，最適化アルゴリズムの検証）

概要

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This paper describes an active control system intended to minimize the vertical vibrations transferred from the seat to the human body in a vehicle. This system controls mechanical properties such as the spring constants and damping coefficients of each part of the vehicle seat by using an optimization algorithm that comprises vibration analysis and an optimization method. To examine the feasibility of the optimization algorithm, we designed a vibration model for the seatoccupant system and calculated the reduction in vibration due to the algorithm by numerical analysis. The mechanical properties of the back and front side of the seat were controlled with reference to the standard condition in the range of 1/1.5-1.5 times, 1/2-2 times, and 1/4-4 times. These results suggest that the respective rates of vibration reduction for the head in the frequency range of 3.6 - 8.5 Hz are 36 % - 52 %, 40 % - 63 %, and 55 % - 76 % for the seat controlled with reference to the standard condition in the range of 1/1.5-1.5 times, 1/2-2 times, and 1/4-4 times, respectively. In summary, the proposed algorithm successfully reduced vibrations from the seat to the human body in a vehicle.