Research on Torque Distribution Four-Wheel Drive Vehicle Electronic Control System
|Keywords||Four-wheel drive 4WD Torque distribution Inter-axial differential Planetary gear Control strategy|
In order to maximize the use of the ground can provide traction and improve vehicle starting acceleration and performance , four-wheel drive at the time of exercise of the car ( 4 Wheel Drive , 4WD) way. The four-wheel drive vehicle weight are attached weight , can play a large driving force . The front axle has a dual function of the steering and drive higher requirements on the vehicle's steering characteristics . The full-time four-wheel drive (full time 4WD) system can be done automatically assigned to the front and rear driving force to achieve the perfect driving force and steering force configuration . Completed are an important part of this article : the to determine shaft torque distribution device structure program ; establish engine model, the shaft torque split device model , brake model , transmission model , transmission model , tire model , vehicle model , driving the members intent modules, road adhesion module including driving mechanics model ; study to determine the torque distribution control strategy ; design throttle position controller , wheel brake pressure controller and shaft torque distribution device current controller . The application MATLAB_SIMULINK software model control strategy simulation calculations . Come running faster car than no torque distribution control torque distribution control .