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48585 results in Computer Science

Page 1670 of 2430

  • ROB volume 4 issue 2 Cover and Front matter

  • Journal:
    Robotica / Volume 4 / Issue 2 / April 1986
    Published online by Cambridge University Press:
    09 March 2009, pp. f1-f2
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  • ROB volume 9 issue 4 Cover and Front matter

  • Journal:
    Robotica / Volume 9 / Issue 4 / December 1991
    Published online by Cambridge University Press:
    09 March 2009, pp. f1-f2
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  • Letter to the Editor*

  • Tony Owen
  • Journal:
    Robotica / Volume 10 / Issue 4 / July 1992
    Published online by Cambridge University Press:
    09 March 2009, pp. 287-288
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  • Displacements by Successive rotations for Vehicles Subject to Given Constraints

  • Michel V. Romerio, Christof W. Burckhardt
  • Journal:
    Robotica / Volume 9 / Issue 4 / December 1991
    Published online by Cambridge University Press:
    09 March 2009, pp. 409-415

  • The displacements of a vehicle on a plane can be subject to constraints depending on the nature of the vehicle. One can, for instance, think of the existence of a smallest turning circle for a car.

    In this paper our purpose is to show, on a simple example, how such constraints can be handled. We, in fact, consider the case of a vehicle the motions of which consist of a finite sequence of rotations, each rotation being subject to the following constraints.

    1) The radius of the circles along which the displacements of the vehicle take place are larger than a critical radius.

    2) The centers of the successive rotations are located along a straight line defined by the geometry of the vehicle.

    The mathematical analysis of this problem relies on a suitable choice of frames of reference in which the expression of the constraints is particularly simple. It is then shown that, under the above constraints, an arbitrary displacement can always be achieved by three approriate rotations.

  • ROB volume 5 issue 1 Cover and Back matter

  • Journal:
    Robotica / Volume 5 / Issue 1 / January 1987
    Published online by Cambridge University Press:
    09 March 2009, pp. b1-b8
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  • Geometric modelling of boundless grasps

  • Y.L. Xiong, D.J. Sanger, D.R. Kerr
  • Journal:
    Robotica / Volume 11 / Issue 1 / January 1993
    Published online by Cambridge University Press:
    09 March 2009, pp. 19-26

  • This paper describes the development of the topological and geometric approach to the analysis and synthesis of form-closed grasps of arbitrary objects. Concepts of wrench spaces and the relevant subsets of the positive cone, the affine hull, the convex huli, and the related polar cone are used, and applied to a representative example.

Page 1670 of 2430