arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.06176cs.RO
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无调谐接触隐式轨迹优化

Tuning-Free Contact-Implicit Trajectory Optimization

Northeastern University(东北大学);Mitsubishi Electric Research Labs(三菱电机研究实验室);Irish Manufacturing Research(爱尔兰制造研究中心)

Aykut Ozgun Onol, Radu Corcodel, Philip Long, Taskin Padir

摘要:

我们提出了一个接触隐式轨迹优化框架,可以计划接触互动轨迹不同的机器人架构和任务,使用一个平凡的初始猜测,而不需要任何参数调整。这是通过使用松弛接触模型以及用于抑制松弛的自动惩罚调节回路来实现的。此外,问题的结构使我们能够利用在先前迭代中使用松弛所暗示的接触信息,使得解决方案以很少的计算开销得到显式改进。我们测试所提出的方法在模拟实验中使用7自由度的手臂和移动机器人和平面运动,使用类人机器人在零重力的非弹性操作。结果表明,我们的方法提供了一个开箱即用的解决方案,具有良好的性能,广泛的应用。

英文摘要:

We present a contact-implicit trajectory optimization framework that can plan contact-interaction trajectories for different robot architectures and tasks using a trivial initial guess and without requiring any parameter tuning. This is achieved by using a relaxed contact model along with an automatic penalty adjustment loop for suppressing the relaxation. Moreover, the structure of the problem enables us to exploit the contact information implied by the use of relaxation in the previous iteration, such that the solution is explicitly improved with little computational overhead. We test the proposed approach in simulation experiments for non-prehensile manipulation using a 7-DOF arm and a mobile robot and for planar locomotion using a humanoid-like robot in zero gravity. The results demonstrate that our method provides an out-of-the-box solution with good performance for a wide range of applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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