关键词: 拖拉机座椅, 舒适性评价, 人机工程, 主客观组合加权法

Abstract: The tractor seat is the primary interface for humanmachine interaction in the cab. Whether the seat is comfortable is related to the critical issues of the drivers physiology, psychology and work efficiency, so it is of great significance to evaluate the comfort of the tractor seat. In order to accurately and reliably realize the quantitative evaluation of tractor seat comfort, this paper proposes a comprehensive evaluation method of tractor seat comfort based on the subjective and objective combined weighting model. Firstly, a driving comfort evaluation index system is constructed through literature research and expert questionnaires, combined with the parts of the human body where discomfort occurs more frequently. Secondly, the combined weighting method is used to balance the subjective evaluation of experts and objective information to obtain comprehensive weights. Finally, the multilevel fuzzy comprehensive evaluation theory is used to convert the comfort evaluation into quantitative evaluation. An example analysis is carried out to verify the effectiveness of the combined weighting method. The results show that the different parts of the human body have different effects on seat comfort, followed by the hips (0.355), the upper back (0.263), the lower back (0.199) and the legs (0.183). Validation experiments show that the combined weighting used in this paper is effective, and the technology fully combines the advantages of AHP and entropy weighting. While retaining the subjective opinions of experts, the phenomenon of weight imbalance is well avoided, which has important guiding significance for the evaluation and optimum design of seat comfort.

Key words: tractor seat, comfort evaluation, ergonomics, subjective and objective comprehensive weighting approach