Fast Contact-Implicit Model Predictive Control
Fast Contact-Implicit Model Predictive Control
复制标题
快速接触隐式模型预测控制
DOI:
--
复制
发表时间:
2021
影响因子:
7.8
通讯作者:
Zachary Manchester
中科院分区:
文献类型:
--
作者:
Simon Le Cleac’h;Taylor A. Howell;Shuo Yang;Chia;John Zhang;Arun L. Bishop;M. Schwager;Zachary Manchester
In this article, we present a general approach for controlling robotic systems that make and break contact with their environments. Contact-implicit model predictive control (CI-MPC) generalizes linear MPC to contact-rich settings by utilizing a bilevel planning formulation with lower level contact dynamics formulated as time-varying linear complementarity problems (LCPs) computed using strategic Taylor approximations about a reference trajectory. These dynamics enable the upper level planning problem to reason about contact timing and forces, and generate entirely new contact-mode sequences online. To achieve reliable and fast numerical convergence, we devise a structure-exploiting interior-point solver for these LCP contact dynamics and a custom trajectory optimizer for the tracking problem. We demonstrate real-time solution rates for CI-MPC and the ability to generate and track nonperiodic behaviors in hardware experiments on a quadrupedal robot. We also show that the controller is robust to model mismatch and can respond to disturbances by discovering and exploiting new contact modes across a variety of robotic systems in simulation, including a pushbot, planar hopper, planar quadruped, and planar biped.
影响因子:
1.6
作者:
Yamazaki, Ichitaro;Nooshabadi, Saeid;Tomov, Stanimire;Dongarra, Jack
通讯作者:
Dongarra, Jack
DOI:
10.1109/icra40945.2020.9197568
发表时间:
2019-09
期刊:
2020 IEEE International Conference on Robotics and Automation (ICRA)
影响因子:
--
作者:
Alp Aydinoglu;V. Preciado;Michael Posa
通讯作者:
Alp Aydinoglu;V. Preciado;Michael Posa
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