摘要
针对离散冲击路面下车辆的舒适性恶化问题,提出一种基于carsim高精度传感器的离散冲击路面下车辆纵垂向协同控制策略。车辆在纵向通过遗传算法获得合适的制动压力对车速进行调节,在垂向对悬架系统应用改进天棚控制,并且对悬架被动阻尼系数和天棚阻尼系数进行适时切换,通过纵垂向进行协同控制,提高车辆通过离散冲击路面时的舒适性。仿真结果表明:与车辆常规减速通过行驶相比,整车车身加速度减小了16.9%,俯仰角加速度减小了4.5%,俯仰角增大了0.3%,但峰值有所减小,前轮的悬架动挠度减小了2.8%,后轮的悬架动挠度略为增大0.4%,前后车轮的轮胎动载荷均有所减小,前侧车轮减小了4.9%,后侧车轮减小了12.8%,验证了所设计的控制算法的有效性和正确性。
Aiming at the comfort deterioration problem of vehicles under discrete impact road surface,based on the application of carsim high-precision sensor,a vertical and vertical cooperative control strategy of vehicles under discrete impact road surface is proposed.In the longitudinal direction,the vehicle adopts genetic algorithm to obtain the appropriate brake pressure to adjust the speed,Apply improved sky-hook control to the suspension system in the vertical direction,and the passive damping coefficient of the suspension and the ceiling damping coefficient are timely switched,through the longitudinal and vertical collaborative control,to improve the comfort of the vehicle through discrete impact on the road surface.Simulation results show that:Compared with the vehicle's conventional deceleration through driving,the vehicle body acceleration is reduced by 16.9%,the pitch Angle acceleration is reduced by 4.5%,the pitch Angle is increased by 0.3%,but the peak value is reduced,the suspension dynamic deflection of the front wheel is reduced by 2.8%,the suspension dynamic deflection of the rear wheel is slightly increased by 0.4%,and the tire dynamic load of the front and rear wheels is reduced.The reduction is 4.9%for the front wheel and 12.8%for the rear wheel,which verifies the effectiveness and correctness of the designed control algorithm.
作者
张凯峰
孙启武
汪若尘
丁仁凯
叶青
孟祥鹏
ZHANG Kai-feng;SUN Qi-wu;WANG Ruo-chen;DING Ren-kai;YE Qing;MENG Xiang-peng(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang Jiangsu 212013,China;Automotive Engineering Research Institude,Jiangsu University,Zhenjiang Jiangsu 212013,China)
出处
《林业机械与木工设备》
2023年第6期60-68,共9页
Forestry Machinery & Woodworking Equipment
基金
国家自然科学基金项目(51975253)。
关键词
离散冲击路面
纵垂向协同控制
改进天棚控制
阻尼系数切换
半主动悬架
discrete impact pavement
vertical and vertical cooperative control
improved sky-hook control
damping coefficient switching
Semi-active suspension
