arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2209.09614cs.RO
收藏

深度模型预测变阻抗控制

Deep Model Predictive Variable Impedance Control

Norwegian University of Science and Technology (NTNU)(挪威科技大学);Aalto University(阿尔托大学)

Akhil S Anand, Fares J. Abu-Dakka, Jan Tommy Gravdahl

AI总结:

本文提出融合变阻抗控制与MPC的深度模型预测变阻抗控制器,通过信息增益最大化探索学习广义笛卡尔阻抗模型,并在Franka Panda上验证其跨任务免微调的柔顺控制性能。

摘要:

通过改变肌肉刚度来调节柔顺性的能力,对于人类灵巧操作技能至关重要。将柔顺性纳入机器人运动控制,对于以人类水平的灵巧性执行真实世界的力交互任务至关重要。本工作提出了一种用于柔顺机器人操作的深度模型预测变阻抗控制器,它将变阻抗控制与模型预测控制(MPC)相结合。研究采用一种最大化信息增益的探索策略,学习机器人机械臂的广义笛卡尔阻抗模型。该模型在 MPC 框架内用于调整底层变阻抗控制器的阻抗参数,从而无需任何重新训练或微调即可为不同操作任务实现期望的柔顺行为。深度模型预测变阻抗控制方法在 Franka Emika Panda 机器人机械臂上进行了评估,该机械臂在仿真和真实实验中执行不同操作任务。所提方法与变阻抗控制中的无模型和基于模型的强化方法在任务间可迁移性和性能方面进行了比较。

英文摘要:

The capability to adapt compliance by varying muscle stiffness is crucial for dexterous manipulation skills in humans. Incorporating compliance in robot motor control is crucial to performing real-world force interaction tasks with human-level dexterity. This work presents a Deep Model Predictive Variable Impedance Controller for compliant robotic manipulation which combines Variable Impedance Control with Model Predictive Control (MPC). A generalized Cartesian impedance model of a robot manipulator is learned using an exploration strategy maximizing the information gain. This model is used within an MPC framework to adapt the impedance parameters of a low-level variable impedance controller to achieve the desired compliance behavior for different manipulation tasks without any retraining or finetuning. The deep Model Predictive Variable Impedance Control approach is evaluated using a Franka Emika Panda robotic manipulator operating on different manipulation tasks in simulations and real experiments. The proposed approach was compared with model-free and model-based reinforcement approaches in variable impedance control for transferability between tasks and performance.

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。

↑