Intelligence System for Active Vibration Isolation and Pointing of Ultrahigh-Precision Large Space Structures in Real Time

Sayapin, S. N.; Artemenko, Yu. N.

doi:10.1007/978-3-319-27547-5_10

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Low-frequency micro-vibration disturbances are a crucial factor affecting the performance of mounting, testing and experimentation of cutting-edge ultra-precision equipment and systems (Ding et al, 2020; Sayapin and Artemenko, 2016). Methods of vibration isolation and vibration energy harvesting came into being (Liu et al, 2021a; Lu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Magnetic ring array with high-amplitude negative stiffness for high performance micro-vibration isolation

Zhao

Cui

Zou

2022

Journal of Vibration and Control

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A magnetic ring array (MRA) with high-amplitude negative stiffness is proposed to counteract the positive stiffness of vibration isolators and improve the low-frequency performance of heavy-load precision micro-vibration isolation. The MRA uses magnetic rings mounted coaxially and magnetized perpendicularly to form an array structure that produces high-amplitude negative stiffness. An analytical model of its magnetic force and stiffness is established, and the influence of geometric parameters on stiffness is analyzed for optimization. Furthermore, the effectiveness of the MRA is validated through comparisons with existing schemes. A set of experiments are carried out to prove the validity of the analytical model and the performance of the MRA. Experimental results show that the natural frequency of the vibration isolation experimental setup decreases from 4.75 Hz to 1.13 Hz after the introduction of the MRA, and the peak of the one-third octave band velocity spectra decreases from 5.03 μm/s @ 5 Hz to 2.60 μm/s @ 1.25 Hz. The effectiveness of the proposed MRA in improving the performance of micro-vibration isolation is verified.

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Section: Introductionmentioning

confidence: 99%

Magnetic ring array with high-amplitude negative stiffness for high performance micro-vibration isolation

Zhao

Cui

Zou

2022

Journal of Vibration and Control

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“…Many researchers have used active control strategies to improve the precision accuracy of the telescope. [15][16][17][18] In this paper, we present a strategy for the active damping of the TALC using active rods consisting of piezoelectric stacks. The control strategy is verified both numerically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Dynamic stabilization of thin aperture light collector space telescope using active rods

Verma

Pece

Hellegouarch

et al. 2020

J. Astron. Telesc. Instrum. Syst.

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Thin aperture light collector (TALC) is the next generation of telescopes for space exploration. TALC consists of deployable annular segmented mirrors supported on a central mast with the help of cables. The dynamic stability of the telescope is of immense importance in order to make sure that the telescope is pointing in the right direction during the observation period. We present a control strategy for the dynamic stabilization of the segmented TALC structure using active rods. The active rods consist of collocated pairs of piezoelectric stack actuators and sensors. Decentralized integral force feedback is proposed to enhance the dynamic stability of the TALC. The effectiveness of the strategy is demonstrated on a 1/10th scaled mock-up model of the TALC. For numerical investigation, finite element analysis of the TALC is carried out and a reduced order model is extracted using the Craig-Bampton method. This reduced order model is then used for the design and numerical validation of the controller. Experiments are conducted on the mock-up model of the TALC to evaluate the performance of the proposed strategy. It is found that the proposed strategy is quite effective for dynamic stabilization of TALC. It is found to reduce both steady state and transient responses of the TALC.

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Adaptive Algorithms for Evaluating the Effect of Microdynamics on Crystal Growth Parameters in the Information-Control Technological Module of SEMS in Microgravity

Sayapin

2024

Studies in Systems, Decision and Control

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Intelligence System for Active Vibration Isolation and Pointing of Ultrahigh-Precision Large Space Structures in Real Time

Cited by 9 publications

References 7 publications

Magnetic ring array with high-amplitude negative stiffness for high performance micro-vibration isolation

Magnetic ring array with high-amplitude negative stiffness for high performance micro-vibration isolation

Dynamic stabilization of thin aperture light collector space telescope using active rods

Adaptive Algorithms for Evaluating the Effect of Microdynamics on Crystal Growth Parameters in the Information-Control Technological Module of SEMS in Microgravity

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