1. End-Effector Stabilization of a 10-DOF Mobile Manipulator using Nonlinear Model Predictive Control
- Author
-
Osman, Mostafa, Mehrez, Mohamed W., Yang, Shiyi, Jeon, Soo, and Melek, William
- Subjects
Computer Science - Robotics ,Electrical Engineering and Systems Science - Systems and Control - Abstract
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., Comment: 6 pages, 5 figures, published in the 21st IFAC World Congress (2020)
- Published
- 2021