An adaptive path tracking method for autonomous land vehicle based on neural dynamic programming
Qi Zhu, Zhenhua Huang, Daxue Liu, Bin Dai · 2016
Since the nonlinear properties of the autonomous land vehicles (ALVs) and the time-varying relationship between ego-vehicle and the desired path, it is difficult to tune the parameters of a path tracking controller for the autonomous driving of ALVs. Aiming at this problem, a novel learning based path tracking method is proposed in this paper, which is composed of the Stanley control structure and a learning based module. The input of the learning module is the relationship between current vehicle state and the desired path, and the learning output is the parameter k in the Stanley control structure. What we want to learn is to adaptive tune k according to current vehicle state. A near-optimal policy is obtained by neural dynamic programming (NDP), which is an online and model-free algorithm. The learning based module online tunes the parameter k of the Stanley control structure. The simulation results show that the proposed path tracking method possesses attractive performance.