1 May 1994 Demonstration of solar array vibration suppression
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Abstract
An adaptive passive damping system is described for the low-order modes of spacecraft large solar arrays. The work is motivated by the stringent sensor pointing requirements of several current satellite programs. Realistic system-level requirements are developed relating pointing error of a representative spacecraft to damping of its solar arrays. Performance is specified in terms of gain envelopes on open-loop frequency response functions for the structure with dampers. A family of remotely tunable, eddy-current tuned mass dampers (TMDs) is described which suppress several modes of a 430-lb solar array simulator in the frequency range of 0.1 - 1.0 Hz. The magnetic dampers are ground demonstration units, suitable for use in 1-G, but are designed around traceable, system-level dynamic requirements. The damper design is intended from the outset to be evolved into flight hardware. Tuning of TMD natural frequency and damping ratio to their optimum values is demonstrated through component-level base transmissibility test results.
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David A. Kienholz, David A. Kienholz, Scott C. Pendleton, Scott C. Pendleton, Kenneth E. Richards, Kenneth E. Richards, Daniel R. Morgenthaler, Daniel R. Morgenthaler, } "Demonstration of solar array vibration suppression", Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); doi: 10.1117/12.174115; https://doi.org/10.1117/12.174115
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