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arXiv · 2111.06974

Control Barrier Function Augmentation in Sampling-based Control Algorithm for Sample Efficiency

Chuyuan Tao·Hunmin Kim·Hyungjin Yoon·Naira Hovakimyan·Petros Voulgaris
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Abstract

For a nonlinear stochastic path planning problem, sampling-based algorithms generate thousands of random sample trajectories to find the optimal path while guaranteeing safety by Lagrangian penalty methods. However, the sampling-based algorithm can perform poorly in obstacle-rich environments because most samples might violate safety constraints, invalidating the corresponding samples. To improve the sample efficiency of sampling-based algorithms in cluttered environments, we propose an algorithm based on model predictive path integral control and control barrier functions. The proposed algorithm needs fewer samples and time-steps and has a better performance in cluttered environments compared to the original model predictive path integral control algorithm.

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Chuyuan Tao, Hunmin Kim, Hyungjin Yoon, Naira Hovakimyan, Petros Voulgaris. 2021-11-12. Control Barrier Function Augmentation in Sampling-based Control Algorithm for Sample Efficiency. https://arxiv.org/abs/2111.06974

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