Design of Trajectory Tracking for Vehicles using PSO Algorithm

Abstract — A trajectory programming algorithm based drag acceleration profile is presented which aiming at the reference trajectory in reentry trajectory optimization for gliding vehicles. Firstly, Motion equations of vehicles are simplified and control variable is parameterized. Secondly, the optimal control problem of trajectory programming is simplified as one-dimensional searching problem from longitudinal and lateral parts. Finally, the tracking controller is designed for tracking the drag acceleration profile, where the particle swarm optimization(PSO) is adopted in order to optimize the gain coefficient of tracking controller. Simulation results show that the obtained reentry trajectory can save the subsequently optimization iteration time and approach the best trajectory. Index Terms—reentry vehicles, drag acceleration profile, trajectory tracking, particle swarm optimization I