An analysis of RelaxedIK: an optimization-based framework for generating accurate and feasible robot arm motions
An analysis of RelaxedIK: an optimization-based framework for generating accurate and feasible robot arm motions
复制标题
RelaxedIK 分析:基于优化的框架,用于生成准确可行的机器人手臂运动
DOI:
10.1007/s10514-020-09918-9
复制
发表时间:
2020
影响因子:
3.5
通讯作者:
Gleicher, Michael
中科院分区:
文献类型:
--
作者:
Rakita, Daniel;Mutlu, Bilge;Gleicher, Michael
We present a real-time motion-synthesis method for robot manipulators, calledRelaxedIK, that is able to not only accurately match end-effector pose goals as done by traditional IK solvers, but also create smooth, feasible motions that avoid joint-space discontinuities, self-collisions, and kinematic singularities. To achieve these objectives on-the-fly, we cast the standard IK formulation as a weighted-sum non-linear optimization problem, such that motion goals in addition to end-effector pose matching can be encoded as terms in the sum. We present a normalization procedure such that our method is able to effectively make trade-offs to simultaneously reconcile many, and potentially competing, objectives. Using these trade-offs, our formulation allows features to berelaxedwhen in conflict with other features deemed more important at a given time. We compare performance against a state-of-the-art IK solver and a real-time motion-planning approach in several geometric and real-world tasks on seven robot platforms ranging from 5-DOF to 8-DOF. We show that our method achieves motions that effectively follow position and orientation end-effector goals without sacrificing motion feasibility, resulting in more successful execution of tasks compared to the baseline approaches. We also empirically evaluate how our solver performs with different optimization solvers, gradient calculation methods, and choice of loss function in the objective function.
登录
查看更多内容
DOI:
10.15607/rss.2018.xiv.043
发表时间:
2018-06
期刊:
Robotics: Science and Systems XIV
影响因子:
--
作者:
D. Rakita;Bilge Mutlu;Michael Gleicher
通讯作者:
D. Rakita;Bilge Mutlu;Michael Gleicher
影响因子:
1.8
作者:
Kris K. Hauser
通讯作者:
Kris K. Hauser
影响因子:
1.8
作者:
A. A. Maciejewski
通讯作者:
A. A. Maciejewski
DOI:
10.1109/70.56660
发表时间:
1990-06-01
期刊:
IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION
影响因子:
--
作者:
GOSSELIN, C;ANGELES, J
通讯作者:
ANGELES, J
影响因子:
25
作者:
Rakita, Daniel;Mutlu, Bilge;Hiatt, Laura M.
通讯作者:
Hiatt, Laura M.