随着人机工程学的发展以及消费者对商品的舒适性要求的提高,汽车人机工程学越来越被重视.为了在设计最初阶段确定舒适的乘员乘坐姿态,首先利用RAMSIS软件建立人体模型,根据最初的设计参数模拟乘员乘坐姿态,分析当前姿态下的舒适性;然后利用全因子试验设计方法设计2因素6水平试验36次,根据试验数据,运用响应面方法(RSM)拟合出回归模型;最后将回归模型进行显著性分析,应用回归模型得到优化变量及优化目标的最优值.研究结果表明,优化后不舒适度减少13.3%,舒适性明显提高.

For the modern industrial technology, people are trying to find a optimal design to reduce cost and time. Ergonomics is an essential issue to consider in design. To make sure the comfort of passenger car is preferable, it must design optimal passenger sitting posture in the concept design period. This essay provided a method about optimal design in layout passenger sitting posture. It builds a virtual prototype which includes manikin and auto body in RAMSIS to simulate actual passenger sitting posture, and then it analyzes the comfort. Based on these analyses, it chooses back angle of passenger and seat height as variable and the overall discomfort as target value. The experiment was been designed according the method of full factorial design. So the experiment includes 36 trials with two factors and six levels of each factor. And then the object function is estimated by using response surface methodology (RSM). The significance analysis also was been studied. The analysis showed that the model is significant in the significance level of 1%. The optimal passenger sitting posture was got from the object function in Matlab. The discomfort of passenger has decreased 13.3%. The passenger comfort has been improved remarkably.