车辆动力学建模与分析演示幻灯片.ppt

,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,Vehicle Dynamics,Liu Lu,February 25,2012,Contents,Introduction,Parking space and turning radius,Vehicle Dynamics Model,Background,Tire dynamics,Vehicle dynamics,Simulink model,Ongoing Research,Additional moment and turning radius(qualitative analysis),Summary,Introduction,Background&motivation,Skyrocketing increase of cars,Limited parking space,Alleviate parking space requirement,Introduction,Parking length and turning radius,Smaller turning radius makes parking length smaller,Research direction,Academic evaluation on the potential of in-wheel motor EV to reduce parking space requirement.,Contents,Introduction,Parking space and turning radius,Vehicle Dynamics,Model,Background,Tire dynamics,Vehicle dynamics,Simulink model,Ongoing Research,Additional moment and turning radius(qualitative analysis),Summary,Vehicle Dynamics Model,Vehicle Dynamics,Force motion,Force:tire,Motion:vehicle,Three sub-subjects,Longitudinal Dynamics,Vertical Dynamics,Lateral Dynamics,Vehicle Dynamics Model,Tire coordinate system,Three forces and three moments,O,X,Y,Wheel Plane,Direction of wheel travel,Overturning moment,翻转力矩,Spin axis,Slip angle,侧偏角,Aligning,moment,回正力矩,Rolling resistance moment,滚动阻力矩,Camber angle,外倾角,Z,Vehicle Dynamics Model,Vehicle coordinate system,Three linear motions and three rotations,侧倾角,俯仰角,横摆角,喻凡，林逸，,汽车系统动力学,，,2000,Vehicle Dynamics Model,Control and vehicle dynamics,Longitudinal motion,Lateral motion,Yaw motion,Roll motion,Vertical motion,Pitch motion,Lateral force,Normal force,Longitudinal force,Steering control,Suspension control,Traction/br-ake control,Handling,Ride,Acc/dcc,La.D.,V.D.,Long.D.,Research direction,Vehicle motion,Tire force,Chassis control,Target,DYC,VSC,4WS,ABS,TCS,喻凡，林逸，,汽车系统动力学,，,2000,Vehicle Dynamics Model,Vehicle Model,Tire Model,Wheel slip ratio,Wheel slip angle,Camber angle,Wheel speed,Longitudinal force,Lateral force,Normal force,Overturning torque,Rolling resist.torque,Aligning torque,Force and moment,Motion states,Vehicle Dynamics Model,Wheel slip ratio(,滑动率,),Slip ratio,Longitudinal force,w,r,Vehicle Dynamics Model,Direction of wheel travel,Lateral force,Vehicle Dynamics Model,Combined longitudinal and lateral motion,Composition of force is fixed,Friction circle,x,y,Lateral force/N,Brake force/N,Traction force/N,Slip angle/deg,Tire:165SR13,Load:4000N,Tire pressure:206kPa,余志生，汽车理论，第五版，,2008,Vehicle Dynamics Model,Tire model,Vehicle Model,Tire Model,Wheel slip ratio,Wheel slip angle,Camber angle,Wheel speed,Longitudinal force,Lateral force,Normal force,Overturning torque,Rolling resist.torque,Aligning torque,Force and moment,Motion states,Tire Dynamics,Hans B.Pacejka,“Tyre and Vehicle Dynamics”,2005,Vehicle Dynamics Model,F,x,T,r,V,Vehicle Dynamics Model,Simulink model,Vehicle Model,Tire Model,Wheel slip ratio,Wheel slip angle,Camber angle,Wheel speed,Longitudinal force,Lateral force,Normal force,Overturning torque,Rolling resist.torque,Aligning torque,Vehicle Dynamics Model,Vehicle force and motion,Force and moment,Motion states,Vehicle Dynamics Model,Three coordinate systems(C.S.),CoG vehicle center of gravity C.S.,W wheel C.S.,In fixed inertial C.S.,Newtons Law can only applied on fixed C.S.,Vehicle Dynamics Model,Force under vehicle C.S.,Vehicle Dynamics Model,Vehicle motion,Under CoG,Under In,Vehicle Dynamics Model,Vehicle motion,Vehicle Dynamics Model,Simulink model,Vehicle Dynamics Model,Simulink model,Vehicle Model,Tire Model,Wheel slip ratio,Wheel slip angle,Camber angle,Wheel speed,Longitudinal force,Lateral force,Normal force,Overturning torque,Rolling resist.torque,Aligning torque,Vehicle Dynamics Model,Wheel motion states,Force and moment,Motion states,Vehicle Dynamics Model,Wheel motion states,Vehicle C.S.,wheel C.S.,Vehicle Dynamics Model,Wheel C.S.,Longitudinal speed,Lateral speed,Slip angle,Vehicle Dynamics Model,Simulink model,Vehicle Dynamics Model,Simulink model,Vehicle Dynamics Model,Contents,Introduction,Parking space and turning radius,Vehicle Dynamics,Background,Tire dynamics,Vehicle dynamics,Simulink model,Ongoing Research,Additional moment and turning radius(qualitative analysis),Summary,Ongoing Research,Steady state corning,Thomas D.Gillespie,Fundamentals of Vehicle Dynamics,2006,Ongoing Research,Over steer,Neutral steer,Under steer,余志生，汽车理论，第五版，,2008,Ongoing Research,Ongoing Research,Additional moment,Steady state,Additional moment,+,F,X,2,-,F,X,2,F,Y,1,F,Y,2,F,Y1,decrease,F,Y2,increase,f,decrease,r,increase,Tend to over steer,.,F,Y,1,F,Y,2,Summary,Fundamentals of vehicle dynamics,Parking,turning radius,additional moment,Future work,Trajectory of vehicles motion,Quantitative analysis,Experiment validation,Thanks for your attention!,Acknowledgements:,Thanks for my advisor,Prof.Ma,Xiang Liu and Kening Li,