Abstract
Many future applications of robotic systems will require manipulators to operate from moving vehicles. Such vehicles will be compliant in comparison to the rigid bases on which most manipulators are mounted today. Base compliance can seriously degrade system performance. Statically base compliance may lead to error in the position of the end effector, and dynamically base compliance may interact with the motion of the manipulator and impair the stability of the system. The accuracy of the manipulator may be improved by modelling the base compliance and compensating for its deflection. Further improvement in accuracy may be achieved by endpoint feedback control of the position of the end effector relative to the task frame. A Vehicle Emulator System (VES) has been developed for experimental investigation of the static and dynamic behavior of manipulators mounted on compliant bases. The VES operates under admittance control and can experimentally simulate a wide variety of linear and non-linear six-degree-of-freedom compliances. A series of experiments are described that use modelling of the base compliance and end point control to achieve precise positioning of the end effector of a manipulator manipulator mounted on a compliant base.
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Dubowsky, S., I. Paul, and H. West, "An Analytical and Experimental Program to Develop Control Algorithms for Mobile Manipulators", Proc. RoManSy '88, Udine, Italy, 1988.
Dubowsky, S. and A. B. Tanner, "A Study of the Dynamics and Control of Mobile Manipulators Subjected to Vehicle Disturbances," Proc IV Int Symp of Robotics Research, Santa Cruz, CA, 1987.
Fasse, E. D., Stability robustness of impedance controlled manipulators coupled to passive environments, S. M. thesis Dept. of Mech. Eng., MIT 1987.
Fresko, M., The Design and Implementation of a Computer Controlled Platform With Variable Admittance, M.S. Thesis, Dept. of Mech. Eng. MIT, Cambridge, MA January, 1986.
Lynch, R., Analysis of the Dynamics and Control of a Two Degree of Freedom Robotic Manipulator Mounted on a Moving Base, S. M. Thesis, Dept. of Mech. Eng., MIT, Cambridge, MA 1985.
National Academy, Application of Robotics to Reduce Risk and Improve Effectiveness: A Study for the United States Army, Published by the National Academy Press, Washington, D.C. 1983
Stelman, N., Design and Control of a Six-Degree-of-Freedom Platform with Variable Admittance, S.M. Thesis, Dept. of Mech. Eng., MIT, Cambridge, MA.
West, H., E. Papadopoulos, S. Dubowsky, H. Cheah, "A Method for Estimating the Mass Properties of a Manipulator by Measuring the Reaction Moments at its Base," IEEE Conference on Robotics and Automation,Scottsdale, AZ, 1989.
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© 1990 Springer-Verlag
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West, H., Hootsmans, N., Dubowsky, S., Stelman, N. (1990). Experimental simulation of manipulator base compliance. In: Hayward, V., Khatib, O. (eds) Experimental Robotics I. Lecture Notes in Control and Information Sciences, vol 139. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0042527
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DOI: https://doi.org/10.1007/BFb0042527
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