NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Damping and structural control of the JPL phase 0 testbed structureThis paper describes recent advances in structural quieting technology as applied to active truss structures intended for high precision space based optics applications. The active structure incorporates piezoelectric active members which exert control forces internal to the structure and thereby improve the structure's dimensional stability. The control architecture involves two layers of feedback control. The first utilizes collocated measurements of force and velocity at the active member to achieve active damping, the second utilizes noncollocated measurements of acceleration at the location of a simulated optical component to achieve structural stabilization. The local control loops are based on the concept of impedance matching, the global control loops are designed using robust control methods. These two levels of control are intended to operate simultaneously; however, in this paper each approach is applied individually. The combined implementation is left for future work.
Document ID
19920028494
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fanson, James L.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Chu, Cheng-Chih
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lurie, Boris J.
(JPL Pasadena, CA, United States)
Smith, Roy S.
(California, University Santa Barbara, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1991
Publication Information
Publication: Journal of Intelligent Material Systems and Structures
Volume: 2
ISSN: 1045-389X
Subject Category
Cybernetics
Accession Number
92A11118
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available