基于滑模控制的三轴重型汽车平顺性优化研究  

Research on Sliding Mode Control of Vertical Dynamics Model of Three-axle Heavy-duty Truck

作　　者：于静 路永婕 韩寅锋[1] Yu Jing;Lu YongJie;Han YinFeng(School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;State Key Laboratory of Mechanical Behavior in Traffic Engineering Structure and System Safety,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学机械工程学院,河北石家庄050043 [2]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,河北石家庄050043

出　　处：《石家庄铁道大学学报（自然科学版）》2021年第3期60-66,共7页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：国家自然科学基金(11572207,11872255);河北省自然科学基金(A2016210103)。

摘　　要：建立了基于半主动悬架的9自由度三轴重型汽车垂向动力学模型,为提升其平顺性,针对该重型汽车模型设计了滑模控制系统,对悬架阻尼力进行控制。该控制器以天棚阻尼系统为参考,使重型汽车振动响应跟随参考系统。基于Matlab/Simulink软件对滑模控制系统进行验证,在B级路面不同车速工况下进行响应分析。结果表明,所建立的控制器在不同车速下,均能有效改善车辆垂向加速度、俯仰角速度和侧倾角加速度。A 9-DOF three-axle heavy-duty vehicle vertical dynamics model based on semi-active suspension was established.In order to improve its ride comfort,a sliding mode control system was designed for the heavy-duty vehicle model to control the suspension damping force.The controller took the ceiling damping system as a reference and made the vibration response of heavy vehicles follow the reference system.The sliding mode control system was verified based on Matlab/Simulink software,and the response analysis was carried out under different vehicle speed conditions on the B-level road.The results showed that the established controller can effectively improve the vertical acceleration,pitch angular velocity and roll angular acceleration of the vehicle at different vehicle speeds.

关 键 词：平顺性模型 半主动悬架 滑模控制 天棚阻尼 

分 类 号：U461[机械工程—车辆工程]