Impact Invariant Control with Applications to Bipedal Locomotion
Impact Invariant Control with Applications to Bipedal Locomotion
复制标题
冲击不变控制及其在双足运动中的应用
DOI:
10.1109/iros51168.2021.9636094
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Michael Posa
中科院分区:
文献类型:
--
作者:
William Yang;Michael Posa
When legged robots impact their environment, they undergo large changes in their velocities in a small amount of time. Measuring and applying feedback to these velocities is challenging, and is further complicated due to uncertainty in the impact model and impact timing. This work proposes a general framework for adapting feedback control during impact by projecting the control objectives to a subspace that is invariant to the impact event. The resultant controller is robust to uncertainties in the impact event while maintaining maximum control authority over the impact invariant subspace. We demonstrate the utility of the projection on a walking controller for a planar five-link-biped and on a jumping controller for a compliant 3D bipedal robot, Cassie. The effectiveness of our method is shown to translate well on hardware.
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DOI:
10.1109/icra48506.2021.9560906
发表时间:
2021
期刊:
IEEE International Conference on Robotics and Automation (ICRA 2021
影响因子:
--
作者:
Reher, Jenna;Ames, Aaron D.
通讯作者:
Ames, Aaron D.
影响因子:
9.2
作者:
Hartley, Ross;Ghaffari, Maani;Grizzle, Jessy W.
通讯作者:
Grizzle, Jessy W.
DOI:
--
发表时间:
2020
期刊:
Conference on Robot Learning
影响因子:
--
作者:
Pfrommer, Samuel;Halm, Mathew;Posa, Michael
通讯作者:
Posa, Michael
影响因子:
5.2
作者:
Green, Kevin;Godse, Yesh;Hurst, Jonathan
通讯作者:
Hurst, Jonathan