The invention discloses a vehicle lane-changing
path tracking control method based on
model prediction, and belongs to the technical field of intelligent
vehicle control. The vehicle lane-changing
path tracking control method is applied to an
advanced driver-assistance
system of a vehicle and comprises the steps of establishing an expected lane-changing path model based on obverse and reverse trapezoid
yaw angle acceleration, performing
force analysis on a lane-changing vehicle, establishing a 3-DoF vehicle dynamic model, converting the nonlinear 3-DoF vehicle dynamic model into a discrete
linear prediction model, designing an objective function and constraint conditions of a
model prediction controller, and calculating and outputting a
physical quantity for controlling the motion of the vehicle according to an expected path. The expected lane-changing path planned according to the vehicle lane-changing
path tracking control method improves the comfort of a driver. Control quantities comprise a driving force and a front wheel
steering angle of
vehicle driving so as to ensure high-precision vehicle speed control while satisfying the lateral lane-changing requirements. The robustnessof control tracking is high, and the control precision is high, so that lateral tracking errors can be effectively reduced.