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Active vibration absorber for CSI evolutionary model: Design and experimental resultsThe development of control of large flexible structures technology must include practical demonstration to aid in the understanding and characterization of controlled structures in space. To support this effort, a testbed facility was developed to study practical implementation of new control technologies under realistic conditions. The design is discussed of a second order, acceleration feedback controller which acts as an active vibration absorber. This controller provides guaranteed stability margins for collocated sensor/actuator pairs in the absence of sensor/actuator dynamics and computational time delay. The primary performance objective considered is damping augmentation of the first nine structural modes. Comparison of experimental and predicted closed loop damping is presented, including test and simulation time histories for open and closed loop cases. Although the simulation and test results are not in full agreement, robustness of this design under model uncertainty is demonstrated. The basic advantage of this second order controller design is that the stability of the controller is model independent.
Document ID
19910012265
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bruner, Anne M. (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Belvin, W. Keith (NASA Langley Research Center Hampton, VA, United States)
Horta, Lucas G. (NASA Langley Research Center Hampton, VA, United States)
Juang, Jer-Nan (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1991
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.15:104048
NASA-TM-104048
Meeting Information
Meeting: Structures, Structural Dynamics and Materials Conference
Location: Baltimore, MD
Country: United States
Start Date: April 8, 1991
End Date: April 10, 1991
Accession Number
91N21578
Funding Number(s)
PROJECT: RTOP 590-14-61-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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