Reliability issues in active control of large flexible space structures

semi-annual status report for the period May 16, 1984 to November 15, 1984
  • 0.96 MB
  • English

National Aeronautics and Space Administration, National Technical Information Service, distributor , [Washington, DC, Springfield, Va
Large space structures (Astronau
Statementprincipal investigator: Prof. W.E. Vander Velde.
SeriesNASA contractor report -- NASA CR-179785.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15377960M

RELIABILITY ISSUES IN ACTIVE CONTROL OF LARGE FLEXIBLE SPACE STRUCTURES Introduction This is the report of the status of work under NASA Research Grant No. NAG for the period May 16, to November 15, The technology base needed for confident design of the redundancy management system for a large space.

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Reliability issues in active control of large flexible space structures: semi-annual status report for the period May 16, to November 15, Author: Wallace E Vander Velde ; United States. Get this from a library.

Reliability issues in active control of large flexible space structures: semi-annual status report for the period May 16, to November 15, [Wallace E Vander Velde; United States.

National Aeronautics and Space Administration.; Massachusetts Institute of Technology. Department of Aeronautics and Astronautics.].

The unreliability of control system components was investigated in our attempt to deal with that problem. This matter is of concern in large space structure control because of the large number of components required to achieve specified performance in some situations, and the long operating period required between maintenance W.

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Vandervelde. Get this from a library. Reliability issues in active control of large flexible space structures: semi-annual status report for the period May 16, to November 15, [Wallace E Vander Velde; United States. National Aeronautics and Space Administration.]. Abstract. The development of a design methodology for the control of Large Space Structures (LSS) involves many different issues.

In this paper we present a selective discussion of the theoretical and practical issues that seem most Robert L. Kosut, Michael G. Lyons. Two issues are of special importance in the central LQG design of large flexible structures: The controller order reduction and the determination of weights in the performance index for the reduced order controller.

However, the reliability of control system against controller failures is the dominating by: 1. This paper describes the latest trends and theoretical developments involved with the modeling and control of Large Flexible Space Structures (LFSS).

The paper addresses first the basic problems, characteristics and difficulties inherent in modeling and control of by: 1. Since mechanically flexible systems are distributed-parameter systems, they are infinite-dimensional in theory and, in practice, must be modelled by large-dimensional systems.

The fundamental problem of actively controlling very flexible systems is to control a large-dimensional system with a much smaller dimensional by: Sliding mode (or variable structure) control is basically a control law that switches rapidly between two values or gains, with the objective of bringing the system's state-space trajectory Cited by: The control objective is to devise a decentralized con- troller that maintains the stability of the LFSS, tracks a constant reference for healthy outputs, regulates against an unknown constant disturbance for healthy outputs, and is ro- bust against parametric uncertainties, so that \spillover e ects" do not Edward Davidson, Raymond Kwong, Samuel Tien-Chieh Huang.

Progress in robust failure detection and isolation, control system reconfiguration, and performance evaluation of systems having redundancy management features is briefly summarized.

TABLE 2 Example of Flexible Beam Perform­ance Limitations Beam Leng(m) th Angular Rate Change ('/s) l(Hz) Natural Damping Times (s) 5 53 20 Automatic control techniques for large space structures Solution Techniques The solution techniques for LSS attitude control are treated, in this section, in two categories; open-loop Cited by: 1.

The fundamental and challenging issues in the control of large space structures are those which arise from the flexible characteristics of the structure or the distributed nature of the systems's energy Modeling errors are inevitable due to the complexity of large space structures and the necessary model simplifications of the distributed Cited by: 7.

Large flexible space structures pose unique control problems because of the complexity of their dynamic behavior, the limited knowledge of the model, the time-varying elements, and the disturbances which occur.

Adaptive control appears to be an effective way to control such flexible space structures[8]. In the. ACTIVE CONTROL OF FLEXIBLE STRUCTURES BASED ON FUZZY LOGIC Kelly Cohen, Tanchum Weller, and Joseph Z. Ben-Asher Department of Aerospace Engineering, Technion – I.I.T., Technion City, HaifaIsrael Keywords: Fuzzy Logic, Flexible Structures, Active Control, Vibration Suppression Abstract This study deals with the development and.

Sep 30,  · Modeling and control of large flexible structures. Authors; Authors and affiliations; R. Skelton "Active Control of Flexible Systems," AIAA Symposium on Dynamics and Control of Large Flexible Spacecraft," Blacksburg, Va., A.

Amos, and V. Venkayya, "Modeling, Analysis and Optimization Issues for Large Space Structures," NASA Cited by: 5. Modeling and Robust Control of Large Flexible Space Structures SCG Report -- PhD Thesis by Benoit BOULET, Abstract In this thesis, we consider the problem of robust control of large flexible space structures (LFSS).

Full text of "The dynamics and control of large flexible space structures-V" See other formats /^^s/)CE'}L>'^.3^^ NASA-CR- A Reproduced Copy OF Reproduced for NASA by the NASA Scientific and Teciinical Information Facility. Jan 06,  · Control of Flexible Structures. Armstrong engineers continue to pioneer new research in aircraft design and modeling.

Researchers are experimenting with revolutionary hyperelastic wing control technologies that can reduce weight, improve aircraft aerodynamic efficiency, and Author: Lee Obringer. The main technical objective of the project is the development of a new methodology for reliability prediction for space products aiming to overcome the problems and limitations of the methods and approaches currently used in practice.

The final outcome of the project will be a handbook for reliability prediction in space applications, which will serve as an input for the. This book is intended for structural engineers who want to acquire some background in vibration control; it can be used as a textbook for a graduate course on vibration control or active structures.

A solutions manual is available through the publisher to teachers using this book as a textbook. Dynamic model for large multi-flexible-body space structures Article (PDF Available) in International Journal of Structural Stability and Dynamics 14(3) · April with Reads.

Future large space structures (LSS) will be constructed on orbit by assembling large subassemblies using teams of robots. Here, the challenging task of the control and planning of the cooperative manipulation of large flexible structural modules by such teams is addressed.

The robots are mounted on the compliant LSS while. Reliability-based control optimization for active base isolation systems J. Scruggs*,y, A. Taflanidis and J. Beck Division of Engineering and Applied Science, California Institute of Technology, U.S.A. SUMMARY A probability-based active control synthesis is proposed for seismic base isolation of a structure that is.

Issues in the development of this system are the propulsion system, (rocket, mechanical, or robotic), the degree of automation, and initial costs of the system. CONTROL OF LARGE SPACE STRUCTURES The Space Station has a facility in which other large structures may be constructed. and Control of Large Flexible Space Structures," Final Report, NASA Grant: NSG, Part B: Development of Continuum Model and Computer Simulation, Howard University, May o Bainum, P.M.

and Reddy, A.S.S.R., "The Dynamics and Control of Large Flexible Space Structures II," Final Report, NASA Grant NSG, Suppl.

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Optimal Control of Large Structures S. Smith and B. Walcott Improvement of Observer/Kalman Filter Identification by Residual Whitening M.

Phan, L. Horta, J.-N. Juang and R. Longman A Continuum for Interconnected Lattice Trusses A. Balakrishnan Modal Analysis and Dynamical Response of a Flexible Space Station.

Control of flexible structures with spillover using an augmented observer Article (PDF Available) in Journal of Guidance Control and Dynamics 12(2) · March with 64 Reads. Active Control of Flexible Structures: From Modeling to Implementation (Advances in Industrial Control) [Alberto Cavallo, Giuseppe de Maria, Ciro Natale, Salvatore Pirozzi] on *FREE* shipping on qualifying offers.

A complete solution for problems of vibration control in structures that may be subject to a broadband primary vibration fieldAuthor: Alberto Cavallo. Khot, N. S., “Structure/Control Optimization to Improve the Dynamic Response of Space Structures,” Presented at the International Conference on Computational Mechanics, Tokyo, Japan, May 25–29,and to be published in Computational Mechanics, an International by: Fuel/Time Optimal Control of Flexible Space Structures: A Frequency Domain Approach ROLF HARTMANN TARUNRAJ SINGH Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo, Buffalo, NY,USA (Received 6 March ; accepted 3 December ) Abstract: This paper considers the design of open-loop fuel/time optimal controllers for flexible space .3NASA Goddard Space Flight Center, NASA Goddard Space Flight Center, Greenbelt, MD Abstract—This paper is to address the basics, the limitations and the relationship between component reliability and system reliability through a study of flight computing architectures and related avionics components for NASA future missions.