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  • 11
    Publication Date: 2019-08-13
    Description: Planning and scheduling for robot applications, trajectory planning for manipulators, and manipulator control are discussed.
    Keywords: CYBERNETICS
    Type: NASA-CR-184687 , JPL-PUBL-87-13-VOL-3 , NAS 1.26:184687 , Jan 20, 1987 - Jan 22, 1987; Pasadena, CA; United States
    Format: application/pdf
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  • 12
    Publication Date: 2019-08-13
    Description: Research on sensing and perception, telerobots, man machine interface, scheduling, trajectory planning for manipulators, and manipulator control is discussed.
    Keywords: CYBERNETICS
    Type: NASA-CR-184686 , JPL-PUBL-87-13-VOL-2 , NAS 1.26:184686 , Jan 20, 1987 - Jan 22, 1987; Pasadena, CA; United States
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  • 13
    Publication Date: 2019-08-13
    Description: These proceedings report the results of a workshop on space telerobotics, which was held at the Jet Propulsion Laboratory, January 20-22, 1987. Sponsored by the NASA Office of Aeronautics and Space Technology (OAST), the Workshop reflected NASA's interest in developing new telerobotics technology for automating the space systems planned for the 1990s and beyond. The workshop provided a window into NASA telerobotics research, allowing leading researchers in telerobotics to exchange ideas on manipulation, control, system architectures, artificial intelligence, and machine sensing. One of the objectives was to identify important unsolved problems of current interest. The workshop consisted of surveys, tutorials, and contributed papers of both theoretical and practical interest. Several sessions were held on the themes of sensing and perception, control execution, operator interface, planning and reasoning, and system architecture.
    Keywords: CYBERNETICS
    Type: NASA-CR-184685 , JPL-PUBL-87-13-VOL-1 , NAS 1.26:184685 , Jan 20, 1987 - Jan 22, 1987; Pasadena, CA; United States
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  • 14
    Publication Date: 2019-07-13
    Description: The inverse and forward dynamics problems for a set of rigid bodies connected by hinges to form a topological tree are solved by using recursive techniques from linear filtering and smoothing theory. An inward filtering sequence computes a set of constraint moments and forces. This is followed by an outward sequence to determine a corresponding set of angular and linear accelerations. An inward sequence begins at the tips of all of the terminal bodies of the tree and proceeds inwardly through all of the branches until it reaches the root. Similarly, an outward sequence begins at the root and propagates to all of the tree branches until it reaches the tips of the terminal bodies. The paper also provides an approach to evaluate recursively the composite multibody system inertia matrix and its inverse.
    Keywords: CYBERNETICS
    Type: VPI&SU/AIAA Symposium; Jun 29, 1987 - Jul 01, 1987; Blacksburg, VA; United States
    Format: text
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  • 15
    Publication Date: 2019-07-13
    Description: Methods developed recently by the author to solve the problem of forward dynamics for nonlinear joint-connected multibody systems are summarized. Solution of this problem is of interest in such application areas as robotics, deploying structures, ground vehicles, and pointing of antennas and instrumented platforms. The problem is solved by the recursive filtering and smoothing techniques of state estimation theory. The filtering stage takes the applied joint moments as inputs to produce a sequence of spatial constraint forces acting at the joints of the system. The smoothing stage takes the innovations process resulting from the filter as an input and produces a set of spatial accelerations and a corresponding set of joint-angle accelerations.
    Keywords: CYBERNETICS
    Type: ComCon Workshop on Stabilization of Flexible Structures; Dec 11, 1987 - Dec 15, 1987; Montpellier; France
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  • 16
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    In:  Other Sources
    Publication Date: 2019-07-13
    Description: The use of recursive techniques similar to random field models to factor and invert the inertia matrix of a multibody system is discussed. An equivalence is established between the composite multibody system inertia matrix and the covariance of the output of a described linear system model. Conditional mean estimation and sequential estimation problems are solved along with problems of filtering and smoothing. Formulas are developed to compute the covariance of several relevant quantities. The foregoing results are used to obtain the inverse of the composite multibody system inertia in closed form.
    Keywords: CYBERNETICS
    Type: ComCon Workshop on Stabilization of Flexible Structures; Dec 11, 1987 - Dec 15, 1987; Montpellier; France
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