Model-Free Safety-Critical Control for Robotic Systems
Model-Free Safety-Critical Control for Robotic Systems
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DOI:
10.1109/lra.2021.3135569
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发表时间:
2022-04-01
影响因子:
5.2
通讯作者:
D. Ames, Aaron
中科院分区:
文献类型:
--
作者:
Molnar, Tamas G.;K. Cosner, Ryan;D. Ames, Aaron
This letter presents a framework for the safety-critical control of robotic systems, when safety is defined on safe regions in the configuration space. To maintain safety, we synthesize a safe velocity based on control barrier function theory without relying on a - potentially complicated - high-fidelity dynamical model of the robot. Then, we track the safe velocity with a tracking controller. This culminates in model-free safety critical control. We prove theoretical safety guarantees for the proposed method. Finally, we demonstrate that this approach is application-agnostic. We execute an obstacle avoidance task with a Segway in high-fidelity simulation, as well as with a Drone and a Quadruped in hardware experiments.