Adaptive impedance force control of an industrial manipulator

The paper deals with adaptive impedance control and its application to the problem of industrial robot control with the end-effector contacting the environment. The position-based impedance control scheme is employed providing a mass-spring-damper behavior of the robot end-effector. Due to unknown parameters of the environment (stiffness, exact position) additional adaptive terms are included to assure the system stability despite the lack of knowledge of the environmental parameters. A model reference algorithm is proposed which differs from classical algorithms in its method of excitation. Adaptive impedance controller implementation results for industrial 5 DOF anthropomorphic robot ASEA IRb 6 are outlined and discussed.

[1]  Rolf Isermann,et al.  Adaptive Control Systems , 2005 .

[2]  Neville Hogan,et al.  Impedance Control: An Approach to Manipulation , 1984, 1984 American Control Conference.

[3]  Daniel E. Whitney,et al.  Historical Perspective and State of the Art in Robot Force Control , 1985, Proceedings. 1985 IEEE International Conference on Robotics and Automation.

[4]  Sunil K. Singh.  Adaptive control of manipulator interaction with environment: theory and experiments , 1993, [1993] Proceedings IEEE International Conference on Robotics and Automation.

[5]  Richard Colbaugh,et al.  Adaptive Compliant Motion Control for Dexterous Manipulators , 1995, Int. J. Robotics Res..

[6]  M. Doyon,et al.  On the implementation and performance of impedance control on position controlled robots , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[7]  Homayoun Seraji,et al.  Force Tracking in Impedance Control , 1993, [1993] Proceedings IEEE International Conference on Robotics and Automation.

[8]  Jean-Jacques E. Slotine,et al.  Robot analysis and control , 1988, Autom..

[9]  Craig R. Carignan,et al.  Manipulator impedance accuracy in position-based impedance control implementations , 1994, Proceedings of the 1994 IEEE International Conference on Robotics and Automation.

[10]  Neville Hogan,et al.  Impedance Control: An Approach to Manipulation: Part I—Theory , 1985 .

[11]  Pradeep K. Khosla,et al.  The Equivalence of Second Order Impedance Control and Proportional Gain Explicit Force Control: Theory and Experiments , 1991, ISER.