Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
Published: 2018-10-26
Total Pages: 46
ISBN-13: 9781729266144
DOWNLOAD EBOOK →Concern over the limited intravehicular activity time has increased the interest in performing in-space assembly and construction operations with automated robotic systems. A technique being considered at LaRC is a supervised-autonomy approach, which can be monitored by an Earth-based supervisor that intervenes only when the automated system encounters a problem. A test-bed to support evaluation of the hardware and software requirements for supervised-autonomy assembly methods was developed. This report describes the design of the software system necessary to support the assembly process. The software is hierarchical and supports both automated assembly operations and supervisor error-recovery procedures, including the capability to pause and reverse any operation. The software design serves as a model for the development of software for more sophisticated automated systems and as a test-bed for evaluation of new concepts and hardware components. Herstrom, Catherine L. and Grantham, Carolyn and Allen, Cheryl L. and Doggett, William R. and Will, Ralph W. Langley Research Center RTOP 506-43-41-02
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-06-30
Total Pages: 24
ISBN-13: 9781722069087
DOWNLOAD EBOOK →Langley Research Center developed a unique test bed for investigating the practical problems associated with the assembly of large space truss structures using robotic manipulators. The test bed is the result of an interdisciplinary effort that encompasses the full spectrum of assembly problems - from the design of mechanisms to the development of software. The automated structures assembly test bed and its operation are described, the expert system executive and its development are detailed, and the planned system evolution is discussed. Emphasis is on the expert system implementation of the program executive. The executive program must direct and reliably perform complex assembly tasks with the flexibility to recover from realistic system errors. The employment of an expert system permits information that pertains to the operation of the system to be encapsulated concisely within a knowledge base. This consolidation substantially reduced code, increased flexibility, eased software upgrades, and realized a savings in software maintenance costs. Allen, Cheryl L. Langley Research Center RTOP 586-02-11...
Author: United States. National Aeronautics and Space Administration
Publisher:
Published: 1992
Total Pages: 52
ISBN-13:
DOWNLOAD EBOOK →Author:
Publisher:
Published: 1995
Total Pages: 700
ISBN-13:
DOWNLOAD EBOOK →Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.