Controlling autonomous vehicles typically has two main components: planning a trajectory and tracking this trajectory using feedback controllers. To benefit from the recent progress in planning algorithms, it is key that the underlying tracking controller is able to follow the planned trajectory as desired. In emergency situations in particular, it is crucial that feedback controllers steer the vehicle as close as possible to the planned trajectory to remain within a safe corridor. While there exists much work on the design of trajectory and path tracking controllers for vehicles, little work has been done to systematically compare different approaches, especially when considering extreme situations, uncertain parameters, and disturbances. In this work, we compare eight tracking controllers in a systematic way, each of them representing a different controller family. By not only considering nominal behavior, but also sensor noise and uncertain parameters, we obtain for the first time a broad comparison of the behavior of different controllers in various situations.
Comparison of trajectory tracking controllers for autonomous vehicles
2017-10-01
472865 byte
Conference paper
Electronic Resource
English
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