Equilibrium Point Control of a 2-DOF Manipulator
- 28 November 2005
- journal article
- Published by ASME International in Journal of Dynamic Systems, Measurement, and Control
- Vol. 128 (1), 134-141
- https://doi.org/10.1115/1.2168474
Abstract
Programmable mechanical compliance in actuation is desirable for human interaction tasks and important for producing biomimetic motion, particularly for robots designed for use in domestic settings. In this paper, the equilibrium point (EP) hypothesis is proposed and implemented as a new strategy for controlling programmable compliance. The primary objective of this work is to design and demonstrate a simple robot control strategy that can potentially be used by assistive robots to learn and execute compliant interaction tasks from human demonstrations. A 2-DOF planar manipulator activated by McKibben actuators was constructed for the purpose of demonstrating the application of the EP hypothesis on an inexpensive robotic platform, such as might be used in domestic applications. The equilibrium angle and stiffness of each of the joints on the manipulator can be independently programmed. The results presented herein show stable and satisfactory tracking behavior during free motion, interaction, and transition tasks for a robot control system inspired by the EP hypothesis and implemented with a linear proportional-integral (PI) control strategy.Keywords
This publication has 20 references indexed in Scilit:
- Safety Evaluation Method of Design and Control for Human-Care RobotsThe International Journal of Robotics Research, 2003
- Conservative Congruence Transformation for Joint and Cartesian Stiffness Matrices of Robotic Hands and FingersThe International Journal of Robotics Research, 2000
- Modeling and control of McKibben artificial muscle robot actuatorsIEEE Control Systems, 2000
- Application of rubber artificial muscle manipulator as a rehabilitation robotIEEE/ASME Transactions on Mechatronics, 1997
- Human-robot contact in the safeguarding spaceIEEE/ASME Transactions on Mechatronics, 1997
- Measurement and modeling of McKibben pneumatic artificial musclesIEEE Transactions on Robotics and Automation, 1996
- The origin and use of positional frames of reference in motor controlBehavioral and Brain Sciences, 1995
- A Classification of Robot ComplianceJournal of Mechanical Design, 1993
- Control of Robotic Manipulators During General Task Execution: A Discontinuous Control ApproachThe International Journal of Robotics Research, 1993
- Admittance matrix design for force-guided assemblyIEEE Transactions on Robotics and Automation, 1992