Robust Control Barrier–Value Functions for Safety-Critical Control
Robust Control Barrier–Value Functions for Safety-Critical Control
复制标题
用于安全关键控制的鲁棒控制屏障值函数
DOI:
10.1109/cdc45484.2021.9683085
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Herbert, Sylvia L.
中科院分区:
文献类型:
--
作者:
Choi, Jason J.;Lee, Donggun;Sreenath, Koushil;Tomlin, Claire J.;Herbert, Sylvia L.
This paper works towards unifying two popular approaches in the safety control community: Hamilton-Jacobi (HJ) reachability and Control Barrier Functions (CBFs). HJ Reachability has methods for direct construction of value functions that provide safety guarantees and safe controllers, however the online implementation can be overly conservative and/or rely on chattering bang-bang control. The CBF community has methods for safe-guarding controllers in the form of point-wise optimization using quadratic programs (CBF-QP), where the CBF-based safety certificate is used as a constraint. However, finding a valid CBF for a general dynamical system is challenging. This paper unifies these two methods by introducing a new reachability formulation inspired by the structure of CBFs to construct a Control Barrier-Value Function (CBVF). We verify that CBVF is a viscosity solution to a novel Hamilton-Jacobi-Isaacs Variational Inequality and preserves the same safety guarantee as the original reachability formulation. Finally, inspired by the CBF-QP, we propose a QP-based online control synthesis for systems affine in control and disturbance, whose solution is always the CBVF’s optimal control signal robust to bounded disturbance. We demonstrate the benefit of using the CBVFs for double-integrator and Dubins car systems by comparing it to previous methods.
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DOI:
10.1109/icra48506.2021.9561561
发表时间:
2021-01
期刊:
2021 IEEE International Conference on Robotics and Automation (ICRA)
影响因子:
--
作者:
Sylvia L. Herbert;Jason J. Choi;Suvansh Qazi;Marsalis T. Gibson;K. Sreenath;C. Tomlin
通讯作者:
Sylvia L. Herbert;Jason J. Choi;Suvansh Qazi;Marsalis T. Gibson;K. Sreenath;C. Tomlin
DOI:
--
发表时间:
2019
期刊:
IEEE Conference on Decision and Control
影响因子:
--
作者:
Sylvia L. Herbert;Shromona Ghosh;Somil Bansal;C. Tomlin
通讯作者:
C. Tomlin
DOI:
10.1137/06065129x
发表时间:
2008
期刊:
SIAM J. Control. Optim.
影响因子:
--
作者:
F. Camilli;L. Grüne;Fabian R. Wirth
通讯作者:
F. Camilli;L. Grüne;Fabian R. Wirth
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Quan Nguyen;K. Sreenath
通讯作者:
K. Sreenath