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Feedback stabilization and tracking of constrained robots

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2 Author(s)
McClamroch, N.H. ; Dept. of Aerosp. Eng., Michigan Univ., Ann Arbor, MI, USA ; Wang, D.

Mathematical models for constrained robot dynamics, incorporating the effects of constraint force required to maintain satisfaction of the constraints, are used to develop explicit conditions for stabilization and tracking using feedback. The control structure allows feedback of generalized robot displacements, velocities, and the constraint forces. Global conditions for tracking, based on a modified computed-torque controller and local conditions for feedback stabilization, using a linear controller, are presented. The framework is also used to investigate the closed-loop properties if there are force disturbances, dynamics in the force feedback loops, or uncertainty in the constraint functions

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Automatic Control, IEEE Transactions on  (Volume:33 ,  Issue: 5 )