RAT iLQR: A Risk Auto-Tuning Controller to Optimally Account for Stochastic Model Mismatch
RAT iLQR: A Risk Auto-Tuning Controller to Optimally Account for Stochastic Model Mismatch
复制标题
RAT iLQR:一种风险自动调整控制器,可最佳地解决随机模型不匹配的问题
DOI:
10.1109/lra.2020.3048660
复制
发表时间:
2021
影响因子:
5.2
通讯作者:
Schwager, Mac
中科院分区:
文献类型:
--
作者:
Nishimura, Haruki;Mehr, Negar;Gaidon, Adrien;Schwager, Mac
Successful robotic operation in stochastic environments relies on accurate characterization of the underlying probability distributions, yet this is often imperfect due to limited knowledge. This work presents a control algorithm that is capable of handling such distributional mismatches. Specifically, we propose a novel nonlinear MPC for distributionally robust control, which plans locally optimal feedback policies against a worst-case distribution within a given KL divergence bound from a Gaussian distribution. Leveraging mathematical equivalence between distributionally robust control and risk-sensitive optimal control, our framework also provides an algorithm to dynamically adjust the risk-sensitivity level online for risk-sensitive control. The benefits of the distributional robustness as well as the automatic risk-sensitivity adjustment are demonstrated in a dynamic collision avoidance scenario where the predictive distribution of human motion is erroneous.
登录
查看更多内容
DOI:
10.1109/cdc.2016.7799215
发表时间:
2016-12
期刊:
2016 IEEE 55th Conference on Decision and Control (CDC)
影响因子:
--
作者:
Ioannis Exarchos;Evangelos A. Theodorou;P. Tsiotras
通讯作者:
Ioannis Exarchos;Evangelos A. Theodorou;P. Tsiotras
DOI:
--
发表时间:
2020-09
期刊:
ArXiv
影响因子:
--
作者:
B. Ivanovic;Amine Elhafsi;G. Rosman;Adrien Gaidon;M. Pavone
通讯作者:
B. Ivanovic;Amine Elhafsi;G. Rosman;Adrien Gaidon;M. Pavone
DOI:
10.1109/ccta.2017.8062463
发表时间:
2017
期刊:
2017 IEEE Conference on Control Technology and Applications (CCTA
影响因子:
--
作者:
Samuelson, Samantha;Yang, Insoon
通讯作者:
Yang, Insoon
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
A. Philpott;Michael G. Kapteyn;K. Willcox
通讯作者:
K. Willcox
DOI:
10.1109/icra40945.2020.9196857
发表时间:
2020
期刊:
2020 IEEE International Conference on Robotics and Automation (ICRA)
影响因子:
--
作者:
A. Hakobyan;Insoon Yang
通讯作者:
Insoon Yang