Rapid Convex Optimization of Centroidal Dynamics using Block Coordinate Descent
Rapid Convex Optimization of Centroidal Dynamics using Block Coordinate Descent
复制标题
使用块坐标下降的质心动力学快速凸优化
DOI:
10.1109/iros51168.2021.9635856
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Righetti, Ludovic
中科院分区:
文献类型:
--
作者:
Shah, Paarth;Meduri, Avadesh;Merkt, Wolfgang;Khadiv, Majid;Havoutis, Ioannis;Righetti, Ludovic
In this paper we explore the use of block coordinate descent (BCD) to optimize the centroidal momentum dynamics for dynamically consistent multi-contact behaviors. The centroidal dynamics have recently received a large amount of attention in order to create physically realizable motions for robots with hands and feet while being computationally more tractable than full rigid body dynamics models. Our contribution lies in exploiting the structure of the dynamics in order to simplify the original non-convex problem into two convex subproblems. We iterate between these two subproblems for a set number of iterations or until a consensus is reached. We explore the properties of the proposed optimization method for the centroidal dynamics and verify in simulation that motions generated by our approach can be tracked by the quadruped Solo12. In addition, we compare our method to a recently proposed convexification using a sequence of convex relaxations as well as a more standard interior point method used in the off-the-shelf solver IPOPT to show that our approach finds similar, if not better, trajectories (in terms of cost), and is more than four times faster than both approaches. Finally, compared to previous approaches, we note its practicality due to the convex nature of each subproblem which allows our method to be used with any off-the-shelf quadratic programming solver.
登录
查看更多内容
DOI:
--
发表时间:
2014
期刊:
IEEE-RAS International Conference on Humanoid Robots
影响因子:
--
作者:
Michael A. Hopkins;D. Hong;A. Leonessa
通讯作者:
A. Leonessa
DOI:
10.1109/iros.2018.8593977
发表时间:
2018
期刊:
2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
影响因子:
--
作者:
W. Merkt;V. Ivan;S. Vijayakumar
通讯作者:
S. Vijayakumar
DOI:
10.1109/icra48506.2021.9562022
发表时间:
2021
期刊:
2021 IEEE-RAS International Conference on Robotics and Automation (ICRA
影响因子:
--
作者:
Viereck, Julian;Righetti, Ludovic
通讯作者:
Righetti, Ludovic
影响因子:
5.2
作者:
Grimminger, Felix;Meduri, Avadesh;Righetti, Ludovic
通讯作者:
Righetti, Ludovic
DOI:
10.1109/iros.2018.8593694
发表时间:
2018
期刊:
2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)
影响因子:
--
作者:
Yu;D. Berenson
通讯作者:
D. Berenson