日本福祉工学会誌 論文 概要

日本福祉工学会誌 Vol. 26, No. 1, pp. 22-26 (2024)

脱力したまま操作できる自動車アクセルペダルの設計シミュレーション

福永道彦

Simulation of an Automobile Accelerator Pedaling System Operative without Muscle Forces

Michihiko FUKUNAGA

Precision control of automobile pedals is crucial while driving, however, extended durations of driving prompt raise concerns regarding muscular fatigue. We explored the possibility of manipulating pedal reaction forces to enable pedal operation without muscle exertion. Such a system could transcend conventional automobile driving, potentially serving as an interface for individuals with diminished muscular strength. Employing simulation, we computed the pedal reaction forces requisite for achieving this objective. Our two-dimensional model involved heel and hip ground contact, enabling pedal manipulation through foot rotation around the heel. The pedal reaction forces were calculated as to minimize the torque around hip, knee and ankle joints. As a result, a proportional relationship between pedal reaction forces and depression level, suggesting the potential realization of a pedaling system operable while maintaining a relaxed state, contingent upon optimized seat positioning and pedal elasticity design.

Key words:Accel pedal, Muscle fatigue, Muscle frailty, Simulation, Human interface