Weighting analysis of human body parts’ impact on driving posture comfort using the method of removal effects of criteria

Different parts of the human body exhibit varying sensitivities to comfort. This study aims to quantify the effect of each body part on overall comfort. A body pressure measurement system is employed to record pressure values for the shoulders, back, waist, buttocks, and thighs. The collected objective data is then processed using the Method of Removal Effects of Criteria (MEREC) to calculate the weighting coefficients, reflecting the influence of each body part on driving posture comfort. A novel method for defining the weight coefficients of various body parts is proposed by combining subjective and objective perspectives. This method is validated through local stimulation tests conducted both on a bench and in a real vehicle. The results show that this approach avoids the arbitrariness of subjective assignment methods and the susceptibility of the entropy weight method to extreme values. Consequently, the weight coefficients of each body part are determined with greater accuracy, providing a strong theoretical foundation for seat design and evaluation.