摘要
以横向载荷转移率(LTR)作为侧翻预警的指标,利用MEMS传感器和自回归预测模型(AR)对侧倾角和侧倾角速度进行测量和预测进而计算得到LTR预测值,通过线控转向的控制策略对前轮转角进行修正从而将LTR值控制在安全范围内,但这也在一定程度上改变了车辆的行驶轨迹,为了提高车辆的车道保持能力,采用了线控转向和电子机械制动联合防侧翻控制。为了验证侧翻预警效果,在Carsim和Matlab/Simulink中对该控制策略进行联合仿真,仿真结果表明该控制策略能有效地防止汽车侧翻,提高了车辆的行驶安全性。
It adopts the lateral load transfer ratio （LTR） as the rollover warning indicator, uses MEMS sensor and autoregressive prediction model （AR） for the measurement and prediction of roll angle and roll rate to get the predicted value of LTR. The front wheel angle is modified by the control strategy of steer-by-wire so as to control the LTR value in the safety range. But it also changes the movement track af vehicles in a certain extent to improve the ability of keeping vehicle lane, and a combination control strategy of SBW and EMB is illustrated. In order to verify the effect of the rollover warning, a combination simulation for the control strategy is used in Carsim and Matlab/Simulink, and the results of simulation show that the control strategy can effectively prevent vehicle rollover, improving the running safety of vehicles.
出处
《机械设计与制造》
北大核心
2014年第6期143-145,149,共4页
Machinery Design & Manufacture
