Large Space Structures Dynamics And Control

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Large Space Structures: Dynamics and Control

Author : S.N. Atluri,A.K. Amos
Publisher : Springer Science & Business Media
Page : 367 pages
File Size : 47,5 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9783642833762

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Large Space Structures: Dynamics and Control by S.N. Atluri,A.K. Amos Pdf

This monograph is intended to provide a snapshot of the status and opportunities for advan cement in the technologies of dynamics and control oflarge flexible spacecraft structures. It is a reflection ofthe serious dialog and assessments going on all over the world,across a wide variety of scientific and technical disciplines, as we contemplate the next major milestone in mankind's romance with space: the transition from exploration and experimentation to commercial and defense exploitation. This exploitation is already in full swing in the space communications area. Both military and civilian objectives are being pursued with increasingly more sophisticated systems such as large antenna reflectors with active shape control. Both the NATO and Warsaw pact alliances are pursuing permanent space stations in orbit: large structural systems whose development calls for in-situ fabrication and/or assembly and whose operation will demand innovations in controls technology. The last ten years have witnessed a fairly brisk research activity in the dynamics and control oflarge space structures in orderto establish a technology base forthe development of advanced spacecraft systems envisioned for the future. They have spanned a wide spectrum of activity from fundamental methods development to systems concept studies and laboratory experimentation and demonstrations. Some flight experiments have also been conducted for various purposes such as the characterization of the space enviroment, durability of materials and devices in that environment, assembly and repair operations, and the dynamic behavior of flexible structures. It is this last area that has prompted this monogram.

Large Space Structures: Dynamics and Control

Author : S.N. Atluri,A.K. Amos
Publisher : Springer
Page : 363 pages
File Size : 44,7 Mb
Release : 1988-03-28
Category : Technology & Engineering
ISBN : 3540189009

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Large Space Structures: Dynamics and Control by S.N. Atluri,A.K. Amos Pdf

This monograph is intended to provide a snapshot of the status and opportunities for advan cement in the technologies of dynamics and control oflarge flexible spacecraft structures. It is a reflection ofthe serious dialog and assessments going on all over the world,across a wide variety of scientific and technical disciplines, as we contemplate the next major milestone in mankind's romance with space: the transition from exploration and experimentation to commercial and defense exploitation. This exploitation is already in full swing in the space communications area. Both military and civilian objectives are being pursued with increasingly more sophisticated systems such as large antenna reflectors with active shape control. Both the NATO and Warsaw pact alliances are pursuing permanent space stations in orbit: large structural systems whose development calls for in-situ fabrication and/or assembly and whose operation will demand innovations in controls technology. The last ten years have witnessed a fairly brisk research activity in the dynamics and control oflarge space structures in orderto establish a technology base forthe development of advanced spacecraft systems envisioned for the future. They have spanned a wide spectrum of activity from fundamental methods development to systems concept studies and laboratory experimentation and demonstrations. Some flight experiments have also been conducted for various purposes such as the characterization of the space enviroment, durability of materials and devices in that environment, assembly and repair operations, and the dynamic behavior of flexible structures. It is this last area that has prompted this monogram.

The Dynamics and Control of Large Flexible Space Structures

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 28 pages
File Size : 49,6 Mb
Release : 2018-08-06
Category : Electronic
ISBN : 1724739352

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The Dynamics and Control of Large Flexible Space Structures by National Aeronautics and Space Administration (NASA) Pdf

The dynamics and attitude and shape control of very large, inherently flexible spacecraft systems were investigated. Increasingly more complex examples were examined, beginning with a uniform free-free beam, next a free-free uniform plate/platform and finally by considering a thin shallow spherical shell structure in orbit. The effects devices were modeled. For given sets of assumed actuator locations, the controllability of these systems was first established. Control laws for each of the actuators were developed based on decoupling techniques (including distributed modal control) pole placement algorithms and a application of the linear regulator problem for optical control theory. Bainum, P. M. and Krishna, R. and Kumar, V. K. and Reddy, A. S. S. R. Unspecified Center NASA-CR-164982 NSG-1414

Computational Methods and Software Systems for Dynamics and Control of Large Space Structures

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 268 pages
File Size : 44,9 Mb
Release : 2018-07-23
Category : Electronic
ISBN : 1723544744

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Computational Methods and Software Systems for Dynamics and Control of Large Space Structures by National Aeronautics and Space Administration (NASA) Pdf

Two key areas of crucial importance to the computer-based simulation of large space structures are discussed. The first area involves multibody dynamics (MBD) of flexible space structures, with applications directed to deployment, construction, and maneuvering. The second area deals with advanced software systems, with emphasis on parallel processing. The latest research thrust in the second area involves massively parallel computers. Park, K. C. and Felippa, C. A. and Farhat, C. and Pramono, E. Unspecified Center NASA-CR-187669, NAS 1.26:187669, CU-CSSC-90-17 NAG1-756...

Technology for Large Space Systems

Author : Anonim
Publisher : Unknown
Page : 192 pages
File Size : 51,8 Mb
Release : 1989
Category : Large space structures (Astronautics)
ISBN : MINN:30000011047523

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Technology for Large Space Systems by Anonim Pdf

Technology for Large Space Systems

Author : Anonim
Publisher : Unknown
Page : 710 pages
File Size : 51,9 Mb
Release : 1982
Category : Large space structures (Astronautics)
ISBN : UIUC:30112075687852

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Technology for Large Space Systems by Anonim Pdf

Technology for Large Space Systems: A Bibliography with Indexes (supplement 20)

Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
Publisher : Unknown
Page : 192 pages
File Size : 41,5 Mb
Release : 1989
Category : Astronautics
ISBN : NASA:31769000660152

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Technology for Large Space Systems: A Bibliography with Indexes (supplement 20) by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division Pdf

Dynamics and Control of Structures

Author : Wodek K. Gawronski
Publisher : Springer Science & Business Media
Page : 248 pages
File Size : 42,9 Mb
Release : 2004-07-14
Category : Technology & Engineering
ISBN : 9780387218557

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Dynamics and Control of Structures by Wodek K. Gawronski Pdf

This book addresses problems in structural dynamics and control encountered in applications such as robotics, aerospace structures, earthquake-damage prevention, and active noise suppression. The rapid developments of new technologies and computational power have made it possible to formulate and solve engineering problems that seemed unapproachable only a few years ago. This presentation combines concepts from control engineering (such as system norms and controllability) and structural engineering (such as modal properties and models), thereby revealing new structural properties as well as giving new insight into well-known laws. This book will assist engineers in designing control systems and dealing with the complexities of structural dynamics.

Space Station Systems

Author : Anonim
Publisher : Unknown
Page : 252 pages
File Size : 42,7 Mb
Release : 1987
Category : Space stations
ISBN : MINN:31951D00125166D

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Space Station Systems by Anonim Pdf

The Dynamics and Control of Large Flexible Space Structures, Part 11

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 70 pages
File Size : 50,7 Mb
Release : 2018-07-16
Category : Electronic
ISBN : 1722807040

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The Dynamics and Control of Large Flexible Space Structures, Part 11 by National Aeronautics and Space Administration (NASA) Pdf

A mathematical model is developed to predict the dynamics of the proposed Spacecraft Control Laboratory Experiment during the stationkeeping phase. The Shuttle and reflector are assumed to be rigid, while the mass connecting the Shuttle to the reflector is assumed to be flexible with elastic deformations small as compared with its length. It is seen that in the presence of gravity-gradient torques, the system assumes a new equilibrium position primarily due to the offset in the mass attachment point to the reflector from the reflector's mass center. Control is assumed to be provided through the Shuttle's three torquers and throught six actuators located by painrs at two points on the mass and at the reflector mass center. Numerical results confirm the robustness of an LQR derived control strategy during stationkeeping with maximum control efforts significantly below saturation levels. The linear regulator theory is also used to derive control laws for the linearized model of the rigidized SCOLE configuration where the mast flexibility is not included. It is seen that this same type of control strategy can be applied for the rapid single axis slewing of the SCOLE through amplitudes as large as 20 degrees. These results provide a definite trade-off between the slightly larger slewing times with the considerable reduction in over-all control effort as compared with the results of the two point boundary value problem application of Pontryagin's Maximum Principle. Bainum, Peter M. and Reddy, A. S. S. R and Diarra, Cheick M. and Li, Feiyue Unspecified Center...

The Dynamics and Control of Large Flexible Space Structures

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 70 pages
File Size : 42,9 Mb
Release : 2018-11-06
Category : Science
ISBN : 1730890695

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The Dynamics and Control of Large Flexible Space Structures by National Aeronautics and Space Adm Nasa Pdf

A mathematical model is developed to predict the dynamics of the proposed Spacecraft Control Laboratory Experiment during the stationkeeping phase. The Shuttle and reflector are assumed to be rigid, while the mass connecting the Shuttle to the reflector is assumed to be flexible with elastic deformations small as compared with its length. It is seen that in the presence of gravity-gradient torques, the system assumes a new equilibrium position primarily due to the offset in the mass attachment point to the reflector from the reflector's mass center. Control is assumed to be provided through the Shuttle's three torquers and throught six actuators located by painrs at two points on the mass and at the reflector mass center. Numerical results confirm the robustness of an LQR derived control strategy during stationkeeping with maximum control efforts significantly below saturation levels. The linear regulator theory is also used to derive control laws for the linearized model of the rigidized SCOLE configuration where the mast flexibility is not included. It is seen that this same type of control strategy can be applied for the rapid single axis slewing of the SCOLE through amplitudes as large as 20 degrees. These results provide a definite trade-off between the slightly larger slewing times with the considerable reduction in over-all control effort as compared with the results of the two point boundary value problem application of Pontryagin's Maximum Principle. Bainum, Peter M. and Reddy, A. S. S. R and Diarra, Cheick M. and Li, Feiyue Unspecified Center...