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arXiv 2103.13153cs.ROcs.SYeess.SY
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基于非线性模型预测控制的10- DOF移动机械手末端执行器镇定

End-Effector Stabilization of a 10-DOF Mobile Manipulator using Nonlinear Model Predictive Control

University of Waterloo(滑铁卢大学)

Mostafa Osman, Mohamed W. Mehrez, Shiyi Yang, Soo Jeon, William Melek

摘要:

移动机械手(安装在移动基座上的机械臂)的运动控制对于复杂的任务(如材料和包装处理)可能具有挑战性。针对由7自由度机械臂和3自由度移动基座组成的10自由度移动机械臂,设计了一种基于非线性模型预测控制(NMPC)的任务空间镇定控制器。该系统模型是基于运动学模型的末端执行器的方向直接由旋转矩阵参数化。状态和控制约束以及奇异性约束显式地包括在NMPC制定。该控制器进行了测试,使用实时仿真,表现出高的定位精度与易处理的计算成本。

英文摘要:

Motion control of mobile manipulators (a robotic arm mounted on a mobile base) can be challenging for complex tasks such as material and package handling. In this paper, a task-space stabilization controller based on Nonlinear Model Predictive Control (NMPC) is designed and implemented to a 10 Degrees of Freedom (DOF) mobile manipulator which consists of a 7-DOF robotic arm and a 3-DOF mobile base. The system model is based on kinematic models where the end-effector orientation is parameterized directly by a rotation matrix. The state and control constraints as well as singularity constraints are explicitly included in the NMPC formulation. The controller is tested using real-time simulations, which demonstrate high positioning accuracy with tractable computational cost.

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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