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Nonholonomic mechanical systems are governed by constraints of motion that are nonintegrable differential expressions. Unlike holonomic constraints, these differential constraints do not reduce the number of dimensions of the configuration space of a system. Therefore, a nonholonomic system can access a configuration space of dimension higher than the number of degrees of freedom of the system. In this paper, we develop an algorithm for planning admissible trajectories for nonholonomic systems that will take the system from one point in its configuration space to another. In our algorithm we first converge the independent variables to their desired values and then use closed trajectories of the independent variables to converge the dependent variables. We use Stokes's theorem in our algorithm to convert the problem of finding a closed path into that of finding a surface area in the space of the independent variables, such that the dependent variables converge to their desired values as the independent variables traverse along the boundary of this surface area. The use of Stokes's theorem simplifies the motion planning problem and also imparts global characteristics. The salient features of our algorithm are apparent in the two examples that we discuss - a planar space robot and a disk rolling without slipping on a flat surface.
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MOTION, ROBOTICS, ROBOTS, SYSTEMS APPROACHShowing 1 featured edition. View all 1 editions?
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A surface integral approach to the motion planning of nonholonomic systems
1992, Naval Postgraduate School, Available from National Technical Information Service
in English
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Book Details
Published in
Monterey, Calif, Springfield, Va
Edition Notes
Title from cover.
"NPS-ME-92-003."
"August 1992."
AD A254 844.
Includes bibliographical references (p. 18-19).
aq/aq cc:9116 12/07/98
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