Optimal approach velocity of an end-effector to the environment
- 1 January 1993
- journal article
- Published by Taylor & Francis in Advanced Robotics
- Vol. 8 (2), 123-137
- https://doi.org/10.1163/156855394x00419
Abstract
This paper presents a new method of generating an optimal approach velocity to control the collision forces between a manipulator and its environment. First, an analysis of the contact motion shows the necessity to control the contact not only after the collision, as shown in previous studies, but also before the collision. Next, using a model of the force-controlled end-effector and its environntent, the forces generated at the contact are formulated as outputs of an autonomous system. In this system, the initial condition is determined by the approach velocity. The optimal approach velocity is defined as the velocity that minimizes the perfonnance index: the integral of the square deviation of the contact forces from the equilibrium force in the control of contact forces. A proportional relation between the optimal approach velocity and the contact force reference is derived analytically based on a mass-damper-spring model of the force-controlled end-effector and its environment. The results of the simulation and experiment demonstrate the effectiveness of the method.Keywords
This publication has 8 references indexed in Scilit:
- Generating Appropriate Approach Velocities To The Environment In Robot TeleoperationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Manipulator transition to and from contact tasks: a discontinuous control approachPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- The use of kinematic redundancy in reducing impact and contact effects in manipulationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Robot Control System ARS/A for ResearchJournal of Robotics and Mechatronics, 1990
- Optimum Velocity Vector of Articulated Robot for Soft BumpingTransactions of the Society of Instrument and Control Engineers, 1990
- Historical Perspective and State of the Art in Robot Force ControlThe International Journal of Robotics Research, 1987
- Teaching and program generation for the hybrid position/force control via the measurement of human manipulation tasks.Journal of the Robotics Society of Japan, 1987
- Mathematical modeling of a robot collision with its environmentJournal of Robotic Systems, 1985