Adaptive Path Tracking for Unmanned Ground Vehicle

摘要

UGV (Unmanned Ground Vehicle) have many potential applications in a variety of areas. Path tracking is a crucial issue for UGV and one of the most popular methods for path tracking is the PPA (Pure Pursuit Algorithm). Most of researches using the PPA only consider the look-ahead distance as a constant parameter or a function. Whereas in fact, the look-ahead distance is affected by some elements and it would directly influence the effect of path tracking. In this paper, an adaptive path tracking method based on the PPA for UGV is proposed, in which the look-ahead distance is selected in a range of value by comparing distance error between the planned path and the actual path. This proposed method will reduce tracking error in some road condition. The results of experiments show that, compared with the classical PPA, the performance in the effectiveness and accuracy of using the adaptive path tracking method is improved.