&lt;title&gt;Hubble Space Telescope solar array damper&lt;/title&gt;

Maly, Joseph R.; Pendleton, Scott C.; Salmanoff, J.; Blount, Garcia J.; Mathews, K.

doi:10.1117/12.349781

Cited by 19 publications

(8 citation statements)

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“…The passive dampers are mostly preferred due to their constructive simplicity, relative low cost and reliability. Among this kind of damper, viscoelastic materials are the cheapest and lightest damping solutions and are widely used by companies in the space sector [1, 2,3]. However, the limited loss factors achievable with these materials, along with the strong dependency on the operating temperature and frequency ranges, make the design of viscoelastic dampers quite complex.…”

Section: Introductionmentioning

confidence: 99%

Design and verification of a negative resistance electromagnetic shunt damper for spacecraft micro-vibration

Stabile

Aglietti

Richardson

et al. 2017

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Design and verification of a negative resistance electromagnetic shunt damper for spacecraft micro-vibration

Stabile

Aglietti

Richardson

et al. 2017

Journal of Sound and Vibration

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“…Dynamic complex stiffness and loss factors can be determined from the complex compliance frequency response function. 6,[15][16] The reciprocal of the complex compliance function is the complex stiffness function that represents force per unit displacement through the frequency range of interest. The real component of the complex stiffness function indicates the dynamic stiffness, and the imaginary component represents the phase lag that is comparable to the damping.…”

Section: Performance Test Resultsmentioning

confidence: 99%

Enhancement of the vibration stability of a microdiffraction goniometer

et al. 2002

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High-precision instrumentation, such as that for x-ray diffraction, electron microscopy, scanning probe microscopy, and other optical micropositioning systems, requires the stability that comes from vibration-isolated support structures. Structure-born vibrations impede the acquisition of accurate experimental data through such highprecision instruments. At the Advanced Photon Source, a multiaxis goniometer is installed in the 2-ID-D station for synchrotron microdiffraction investigations. However, ground vibration can excite the kinematic movements of the goniometer linkages, resulting in critically contaminated experimental data. In this paper, the vibration behavior of the goniometer has been considered. Experimental vibration measurements were conducted to define the present vibration levels and determine the threshold sensitivity of the equipment. In addition, experimental modal tests were conducted and used to guide an analytical finite element analysis. Both results were used for finding the best way to reduce the vibration levels and to develop a vibration damping / isolation structure for the 2-ID-D goniometer. The device that was designed and tested could be used to reduce local vibration levels for the vibration isolation of similar high-precision instruments.

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“…These vibrations can degrade the performance of the payload, for example, decreasing the image resolution and the pointing accuracy. Passive vibration isolation is recommended to try to reduce these micro-vibrations (Dekens and Neat, 1999;Maly et al, 1999). A passive damper can suppress the amplification at resonance and attenuate the high-frequency disturbances.…”

Section: Introductionmentioning

confidence: 99%

Simulation and experiment on the performance of a passive/active micro-vibration isolator

Wang

Chen

Zhang

2016

Journal of Vibration and Control

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In this paper, a passive/active hybrid vibration isolator is proposed to isolate micro-vibration. The passive element of the isolator is a spring-damper constructed with oil-filled corrugated pipes and the active one is an inertial actuator. A numerical model of the isolator is established through theoretical modeling of the stiffness and damping of the spring-damper and the subsystem synthesis method. On the basis of this model, frequency response functions of the disturbance and control channels are computed to describe the characteristics of the isolator. An adaptive control method based on the least mean squares algorithm is adopted to suppress transmission of micro-vibration caused by tonal, chirp or random disturbances. To verify the modeling as well as the isolation performance, tests and experiments are carried out and the results show that the computation of stiffness is effective and the passive element of the isolator has a reasonable amplification factor and a decreasing slope of -40 dB/decade. Furthermore, the active element is able to achieve remarkable attenuation of random and tonal disturbances.

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<title>Hubble Space Telescope solar array damper</title>

Cited by 19 publications

References 0 publications

Design and verification of a negative resistance electromagnetic shunt damper for spacecraft micro-vibration

Design and verification of a negative resistance electromagnetic shunt damper for spacecraft micro-vibration

Enhancement of the vibration stability of a microdiffraction goniometer

Simulation and experiment on the performance of a passive/active micro-vibration isolator

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