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Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781729082263
Category :
Languages : en
Pages : 26
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Book Description
Many acceleration-sensitive, microgravity science experiments will require active vibration isolation from manned orbiters on which they will be mounted. The isolation problem, especially in the case of a tethered payload, is a complex three-dimensional one that is best suited to modern-control design methods. In this paper, extended H(sub 2) synthesis is used to design an active isolator (i.e., controller) for a realistic single-input-multiple-output (SIMO) microgravity vibration isolation problem. Complex mu-analysis methods are used to analyze the isolation system with respect to sensor, actuator, and umbilical uncertainties. The paper fully discusses the design process employed and the insights gained. This design case study provides a practical approach for isolation problems of greater complexity. Issues addressed include a physically intuitive state-space description of the system, disturbance and noise filters, filters for frequency weighting, and uncertainty models. The controlled system satisfies all the performance specifications and is robust with respect to model uncertainties. Hampton, R. D. and Knospe, C. R. and Allaire, P. E. and Grodsinsky, C. M. Glenn Research Center NCC3-365; RTOP 963-70-OH...
Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781729082263
Category :
Languages : en
Pages : 26
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Book Description
Many acceleration-sensitive, microgravity science experiments will require active vibration isolation from manned orbiters on which they will be mounted. The isolation problem, especially in the case of a tethered payload, is a complex three-dimensional one that is best suited to modern-control design methods. In this paper, extended H(sub 2) synthesis is used to design an active isolator (i.e., controller) for a realistic single-input-multiple-output (SIMO) microgravity vibration isolation problem. Complex mu-analysis methods are used to analyze the isolation system with respect to sensor, actuator, and umbilical uncertainties. The paper fully discusses the design process employed and the insights gained. This design case study provides a practical approach for isolation problems of greater complexity. Issues addressed include a physically intuitive state-space description of the system, disturbance and noise filters, filters for frequency weighting, and uncertainty models. The controlled system satisfies all the performance specifications and is robust with respect to model uncertainties. Hampton, R. D. and Knospe, C. R. and Allaire, P. E. and Grodsinsky, C. M. Glenn Research Center NCC3-365; RTOP 963-70-OH...
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722370442
Category :
Languages : en
Pages : 24
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Book Description
Many acceleration-sensitive, microgravity science experiments will require active vibration isolation from manned orbiters on which they will be mounted. The isolation problem, especially in the case of a tethered payload, is a complex three-dimensional one that is best suited to modern-control design methods. In this paper, extended H(sub 2) synthesis is used to design an active isolator (i.e., controller) for a realistic single-input-multiple-output (SIMO) microgravity vibration isolation problem. Complex mu-analysis methods are used to analyze the isolation system with respect to sensor, actuator, and umbilical uncertainties. The paper fully discusses the design process employed and the insights gained. This design case study provides a practical approach for isolation problems of greater complexity. Issues addressed include a physically intuitive state-space description of the system, disturbance and noise filters, filters for frequency weighting, and uncertainty models. The controlled system satisfies all the performance specifications and is robust with respect to model uncertainties. Hampton, R. D. and Knospe, C. R. and Allaire, P. E. and Grodsinsky, C. M. Glenn Research Center NCC3-365; RTOP 963-70-OH...
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1484
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1482
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Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 620
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ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author:
Publisher: CRC Press
ISBN: 9781566765992
Category : Technology & Engineering
Languages : en
Pages : 376
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Book Description
A pre-conference collection of 30 papers that contribute to the event's purpose of promoting the use of magnetic bearings in industrial applications. They cover applications in pumps, turbines, machining, textile spindles, compressors, and fans; auxiliary bearings; magnetic suspension; controls; mod
Author: Haym Benaroya
Publisher: CRC Press
ISBN: 9780824753801
Category : Technology & Engineering
Languages : en
Pages : 746
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Book Description
An effective text must be well balanced and thorough in its approach to a topic as expansive as vibration, and Mechanical Vibration is just such a textbook. Written for both senior undergraduate and graduate course levels, this updated and expanded second edition integrates uncertainty and control into the discussion of vibration, outlining basic concepts before delving into the mathematical rigors of modeling and analysis. Mechanical Vibration: Analysis, Uncertainties, and Control, Second Edition provides example problems, end-of-chapter exercises, and an up-to-date set of mini-projects to enhance students' computational abilities and includes abundant references for further study or more in-depth information. The author provides a MATLAB® primer on an accompanying CD-ROM, which contains original programs that can be used to solve complex problems and test solutions. The book is self-contained, covering both basic and more advanced topics such as stochastic processes and variational approaches. It concludes with a completely new chapter on nonlinear vibration and stability. Professors will find that the logical sequence of material is ideal for tailoring individualized syllabi, and students will benefit from the abundance of problems and MATLAB programs provided in the text and on the accompanying CD-ROM, respectively. A solutions manual is also available with qualifying course adoptions.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 882
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1016
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