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  • Other Sources  (3)
  • MACHINERY  (2)
  • SPACECRAFT PROPULSION AND POWER  (1)
  • 1985-1989  (3)
  • 1989  (2)
  • 1987  (1)
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  • Other Sources  (3)
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  • 1985-1989  (3)
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  • 1989  (2)
  • 1987  (1)
  • 1988  (1)
  • 1
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    Improving A Remote Manipulator (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Set of three reports describes work on Protoflight Manipulator Assembly (PFMA). "Performance Characteristics of Protoflight Manipulator Assembly" presents parameters of PFMA after refurbishment of operating components. "End Effector and Task Board Development for the Protoflight Manipulator Assembly" describes special tools and adaptations allowing PFMA to be used for servicing equipment. "Modular Software Development for the Protoflight Manipulator Assembly" documents interface and control software for PFMA.
    Keywords: MACHINERY
    Type: MFS-27067 , NASA Tech Briefs (ISSN 0145-319X); 13; 9; P. 97
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Recursive Robot-Arm Dynamics via Filtering and Smoothing (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Forward and inverse dynamics solved using Kalman filtering and Bryson-Frazier smoothing. Dynamics of serial-link robot arm solved by using recursive techniques from linear filtering and smoothing theory. Solutions of dynamical equations give forces, moments, and accelerations at joints between links, and multilink inertia matrix and its inverse. Theoretical developments lay foundation for use of filtering and smoothing techniques in design of robot controls.
    Keywords: MACHINERY
    Type: NPO-17040 , NASA Tech Briefs (ISSN 0145-319X); 11; 7; P. 85
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Power conditioning electronics for a 500 Wh inertial energy storage system (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A description is given of a pulse-width-modulated buck-boost converter designed to interface a 500 Wh inertial energy storage system operating from 70 to 140 VDC to a constant bus of 150 VDC. Implementation of hysteresis feedback control provides excellent voltage regulation. The design is based on a 300-Wh, 94 percent Wh efficient prototype and is currently being optimized to yield 97 percent overall watt-hour efficiency.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: IECEC-89; Aug 06, 1989 - Aug 11, 1989; Washington, DC; United States
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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