载重汽车连续下坡弯道路段制动稳定性仿真研究  

Simulation Research on Truck Braking Stability on Turn of an Continuous Downgrade

作　　者：赵伟[1] 王志远[1] 周志立[1] 

机构地区：[1]河南科技大学,洛阳471003

出　　处：《中国机械工程》2010年第16期2010-2015,共6页China Mechanical Engineering

基　　金：陕西省自然科学基础研究计划资助项目(2007E206);河南科技大学博士科研启动基金资助项目(09001408)

摘　　要：针对载重汽车在山区公路连续下坡弯道路段制动时出现的偏离预期行驶车道的工况,利用神经网络方法将轮胎实验数据进行拟合得到轮胎特性多维空间曲面,以此来寻求轮胎在不同工况下制动时的滑移率最优值,并提出了利用主动转向技术,控制汽车在连续下坡弯道路段制动偏驶后恢复到预期行驶车道的控制策略。设计了相关的模糊控制器,对汽车制动时偏离预期行驶车道后的恢复控制结果进行了仿真。仿真结果表明,利用所提出的模糊控制策略,能使载重汽车在连续下坡弯道路段进行紧急制动时沿着驾驶员预期的行驶车道进行制动,所提出的控制方法对于提高载重汽车的行驶安全性具有一定的意义。The optimum slip ratio of tyre under swerve conditions was found when truck was driven on mountain roads.Based on experimental data,the tyre multidimentional space characteristic surface was got by way of neural network.A strategy of controlling braking trace of truck on the turn by active steering was proposed,and the fuzzy controller of lane restoring control after braking wandering was designed.The results of braking simulation under swerve conditions show,the fuzzy controller and the corresponding control strategy can allow truck to brake along the expected driving trace when truck are braking on the turn of an continuous downgrade.The control method proposed herein is of significance to improve truck driving safety.

关 键 词：载重汽车 制动稳定性 神经网络 主动转向 

分 类 号：U461.1[机械工程—车辆工程]