论文部分内容阅读
追尾碰撞事故易导致前车乘员的挥鞭伤,从而造成一定的社会经济损失。根据生物力学的研究成果,在追尾碰撞发生时,适度减小头枕与头部的水平距离可以降低挥鞭伤的程度。为弥补传统纯机械主动头枕响应滞后的不足,采用机电结合的方法,根据感知系统提供的信息,判断行驶安全性,并提前启动主动式头枕,从而保护乘员。根据主动头枕的控制策略,提出头枕控制的算法流程,并建立了追尾碰撞的数学模型,得出前后车不同行驶状态下的最小安全距离表达式,分析了模型中关键参数的随机性与动态性;借助安全裕度开关指标实施控制操作,并以算例进行验证。
Rear-end collision easily lead to the front passenger whiplash injury, resulting in a certain social and economic losses. According to the research results of biomechanics, when the rear-end collisions occur, a moderate reduction of the horizontal distance between the headrest and the head can reduce the degree of whiplash injury. In order to make up for the shortage of the traditional purely mechanical active head restraint, the method of electromechanical integration is adopted to judge the driving safety according to the information provided by the sensing system and to activate the active head restraint in advance so as to protect the occupants. According to the control strategy of active head restraint, the algorithm of head restraint control is proposed, and the mathematical model of rear-end collision is established. The minimum safety distance expression under different driving conditions is obtained. The randomness of the key parameters and Dynamic; using safety margin switch indicator implementation of control operations, and to verify the example.