Objective: The aim of this study is to development of humanoid dummy which is evaluation of car seat comfort. Background: Recently modern car seat had been developed and became increasingly complex and sophisticated. Customers expected an increasing l...
Objective: The aim of this study is to development of humanoid dummy which is evaluation of car seat comfort. Background: Recently modern car seat had been developed and became increasingly complex and sophisticated. Customers expected an increasing level of comfort. To quantification, trying to measure seat comfort previous studies using EMG, Biomechanics analysis, FEM and development structure but limitation to evaluated car seat. Method: Humanoid dummy was consisted skeletal, sensors, soft tissue and dummy control system. Skeletal segment was designed to 95%tile male of standard Korean size. Sensors was combined dummy femor and ischial tuberosity. Soft tissue was made plastic which was validated human soft tissue using shore durometer. Humanoid dummy control system was developed to control dummy`s spine and check sensor`s value. To evaluate car seat comfort, we designed to experiment that change dummy posture 21 steps by movement dummy`s spine according to six car seat condition, 2 height of seat pan and 3 angle of back seat. Results: Results shows that lumbar moment was increased when the seat back small angle and seat pan height was high. When the seat back was high angle, lumbar moment low and variation range was narrowed, the seat pan height was low, lumbar moment low and variation range was narrowed. Conclusion:.This results suggested that a humanoid dummy could be quantitative measurement of car seat comfort as an alternative questionnaire study. Application: The results of the humanoid dummy, might be expect that evaluation of car seat and it could be recommend to driver for good posture when they driving.