Analysis and Testing of Microvibrations Produced by Momentum Wheel Assemblies

Zhou, Weiyong; Li, Dongxu; Luo, Qing; Liu, Kun

doi:10.1016/s1000-9361(11)60430-5

Cited by 64 publications

(29 citation statements)

References 15 publications

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“…Figures 10 and 11 show the disturbance forces and moments produced by the MMVS in the time and frequency domains, respectively. From Figure 11, it is clear that the disturbance forces and moments generated by the simulator are quite consistent with the target MWA disturbance data reported in [4]. Moreover, there is no coupling between the generated disturbance forces and moments.…”

Section: Cosimulation Verificationsupporting

confidence: 71%

“…According to the initial design goal, the MMVS needs to generate the frequency spectrum of the disturbance forces and moments produced by real flight R/MWAs. Table 4 shows the target disturbance forces and moments, which are the experimental data reported in [4]. Figures 10 and 11 show the disturbance forces and moments produced by the MMVS in the time and frequency domains, respectively.…”

Section: Cosimulation Verificationmentioning

confidence: 99%

“…Among the various micro-vibration disturbance sources, that produced by R/MWAs is generally regarded as the largest [2][3][4]. There have been numerous studies on R/MWA disturbance modeling, as well as the characteristics of microvibration caused by R/MWAs [2,3,5].…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

Wang

et al. 2017

Shock and Vibration

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To reproduce the disturbance forces and moments generated by the reaction/momentum wheel assembly, a multi-degree-offreedom micro-vibration simulator is proposed. This can be used in the ground vibration experiments of an optical payload replacing the real action/momentum wheel assembly. First, the detailed structure of the micro-vibration simulator is introduced. Then, the complete system kinematic and dynamic models of the micro-vibration simulator are derived. In addition, the disturbance forces and moments produced by the micro-vibration simulator are calculated. Finally, the normal mode analysis and a cosimulation are adopted to verify the validity of this method. The analysis and simulation results show that the micro-vibration simulator can exactly reproduce the disturbance forces and moments with different amplitudes and different frequency ranges.

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Section: Cosimulation Verificationsupporting

confidence: 71%

Section: Cosimulation Verificationmentioning

confidence: 99%

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Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

Wang

et al. 2017

Shock and Vibration

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“…The working conditions with the rubber shock absorber and without the rubber shock absorber were investigated. To intimate the real flying condition of satellite and the gravity environment in space, the satellite is suspended with a soft sling [29,30].…”

Section: Experimental Systemmentioning

confidence: 99%

Effects of rubber shock absorber on the flywheel micro vibration in the satellite imaging system

Changcheng

Jia

et al. 2016

Photonic Sens

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When a satellite is in orbit, its flywheel will generate micro vibration and affect the imaging quality of the camera. In order to reduce this effect, a rubber shock absorber is used, and a numerical model and an experimental setup are developed to investigate its effect on the micro vibration in the study. An integrated model is developed for the system, and a ray tracing method is used in the modeling. The spot coordinates and displacements of the image plane are obtained, and the modulate transfer function (MTF) of the system is calculated. A satellite including a rubber shock absorber is designed, and the experiments are carried out. Both simulation and experiments results show that the MTF increases almost 10 %, suggesting the rubber shock absorber is useful to decrease the flywheel vibration.

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“…Considerable efforts have been made to model its components to target the culprit of its disturbances (Taniwaki and Ohkami, 2003;Taniwaki et al, 2007;Zhou et al, 2012b). To focus on the main object, in this paper, internal dynamics of the flywheel are ignored except the gyro effects caused by its rotor.…”

Section: Formulation Of Dynamic Equationmentioning

confidence: 99%