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Integrated Active And Passive Control Design Methodology For The Larc Csi Evolutionary Model
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781724256331 Total Pages :372 pages Book Rating :4.2/5 (563 download)
Book Synopsis Integrated Active and Passive Control Design Methodology for the Larc Csi Evolutionary Model by : National Aeronautics and Space Administration (NASA)
Download or read book Integrated Active and Passive Control Design Methodology for the Larc Csi Evolutionary Model written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: A general design methodology to integrate active control with passive damping was demonstrated on the NASA LaRC CSI Evolutionary Model (CEM), a ground testbed for future large, flexible spacecraft. Vibration suppression controllers designed for Line-of Sight (LOS) minimization were successfully implemented on the CEM. A frequency-shaped H2 methodology was developed, allowing the designer to specify the roll-off of the MIMO compensator. A closed loop bandwidth of 4 Hz, including the six rigid body modes and the first three dominant elastic modes of the CEM was achieved. Good agreement was demonstrated between experimental data and analytical predictions for the closed loop frequency response and random tests. Using the Modal Strain Energy (MSE) method, a passive damping treatment consisting of 60 viscoelastically damped struts was designed, fabricated and implemented on the CEM. Damping levels for the targeted modes were more than an order of magnitude larger than for the undamped structure. Using measured loss and stiffness data for the individual damped struts, analytical predictions of the damping levels were very close to the experimental values in the (1-10) Hz frequency range where the open loop model matched the experimental data. An integrated active/passive controller was successfully implemented on the CEM and was evaluated against an active-only controller. A two-fold increase in the effective control bandwidth and further reductions of 30 percent to 50 percent in the LOS RMS outputs were achieved compared to an active-only controller. Superior performance was also obtained compared to a High-Authority/Low-Authority (HAC/LAC) controller. Voth, Christopher T. and Richards, Kenneth E., Jr. and Schmitz, Eric and Gehling, Russel N. and Morgenthaler, Daniel R. Unspecified Center NASA-CR-4580, NAS 1.26:4580 NAS1-19371; RTOP 590-14-91-52...
Book Synopsis Integrated Active and Passive Control Design Methodology for the LaRC CSI Evolutionary Model by : Christopher T. Voth
Download or read book Integrated Active and Passive Control Design Methodology for the LaRC CSI Evolutionary Model written by Christopher T. Voth and published by . This book was released on 1994 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrated Active and Passive Control Design Methodology for the LaRC CSI Evolutionary Model by :
Download or read book Integrated Active and Passive Control Design Methodology for the LaRC CSI Evolutionary Model written by and published by . This book was released on 1994 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1994 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1995 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1995 with total page 1096 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Structural Dynamics and Active Control of Structures by : Wodek Gawronski
Download or read book Advanced Structural Dynamics and Active Control of Structures written by Wodek Gawronski and published by Springer. This book was released on 2007-06-14 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science is for those who learn; poetry for those who know. —Joseph Roux This book is a continuation of my previous book, Dynamics and Control of Structures [44]. The expanded book includes three additional chapters and an additional appendix: Chapter 3, “Special Models”; Chapter 8, “Modal Actuators and Sensors”; and Chapter 9, “System Identification. ” Other chapters have been significantly revised and supplemented with new topics, including discrete-time models of structures, limited-time and -frequency grammians and reduction, almo- balanced modal models, simultaneous placement of sensors and actuators, and structural damage detection. The appendices have also been updated and expanded. Appendix A consists of thirteen new Matlab programs. Appendix B is a new addition and includes eleven Matlab programs that solve examples from each chapter. In Appendix C model data are given. Several books on structural dynamics and control have been published. Meirovitch’s textbook [108] covers methods of structural dynamics (virtual work, d’Alambert’s principle, Hamilton’s principle, Lagrange’s and Hamilton’s equations, and modal analysis of structures) and control (pole placement methods, LQG design, and modal control). Ewins’s book [33] presents methods of modal testing of structures. Natke’s book [111] on structural identification also contains excellent material on structural dynamics. Fuller, Elliot, and Nelson [40] cover problems of structural active control and structural acoustic control.
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1963 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Balanced Control of Flexible Structures by : Wodek Gawronski
Download or read book Balanced Control of Flexible Structures written by Wodek Gawronski and published by Springer. This book was released on 2006-04-10 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods of structural control and dynamics are introduced in this book. These include reduction of large structural models by balanced truncation, placement of actuators and sensors for dynamic testing and control, structural identification of the minimum-order balanced representation, balanced dissipative controller design, balanced LQG and H( controller designs with the closed-form relationships between controller parameters and system performance, and controller reduction methods that preserve the closed-loop performance. The book explores the unique properties of flexible structures to obtain efficient methods of dynamic analysis and controller design. The presented methods of structural dynamics, identification, sensor/actuator placement, and passive, LQG and H( controller design have been checked both with simulations and industrial implementations.
Download or read book Smart Structures and Materials written by and published by . This book was released on 1994 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Smart Structures and Materials 1994 by : Conor Deane Johnson
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Book Synopsis Dynamics and Control of Structures by : Wodek K. Gawronski
Download or read book Dynamics and Control of Structures written by Wodek K. Gawronski and published by Springer Science & Business Media. This book was released on 2004-07-14 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1995 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIAA Guidance Navigation and Control Conference by :
Download or read book AIAA Guidance Navigation and Control Conference written by and published by . This book was released on 1996 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of Dynamic Systems, Measurement, and Control by :
Download or read book Journal of Dynamic Systems, Measurement, and Control written by and published by . This book was released on 1997 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes theoretical and applied original papers in dynamic systems. Theoretical papers present new theoretical developments and knowledge for controls of dynamical systems together with clear engineering motivation for the new theory. Applied papers include modeling, simulation, and corroboration of theory with emphasis on demonstrated practicality.
Book Synopsis NASA Langley Scientific and Technical Information Output: 1994, Volume 1 by :
Download or read book NASA Langley Scientific and Technical Information Output: 1994, Volume 1 written by and published by . This book was released on 1995 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
