Development of Active Microvibration Isolation System for Precision Space Payload

Qian, Yuchen; Xie, Yong; Jia, Jianjun; Zhang, Liang

doi:10.3390/app12094548

Cited by 13 publications

(4 citation statements)

References 30 publications

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“…The system used in this study was a self-developed active vibration isolation system [ 31 ]. The structural arrangement of the active vibration isolation platform (AVIS) is shown in Figure 2 .…”

Section: Problem and System Descriptionmentioning

confidence: 99%

Design of Active Vibration Isolation Controller with Disturbance Observer-Based Linear Quadratic Regulator for Optical Reference Cavities

Qian

Xie

Jia

et al. 2022

Sensors

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The optical reference cavity in an ultrastable laser is sensitive to vibrations; the microvibrations in a space platform affect the accuracy and stability of such lasers. In this study, an active vibration isolation controller is proposed to reduce the effect of vibrations on variations in the cavity length and improve the frequency stability of ultrastable lasers. Based on the decentralized control strategy, we designed a state-differential feedback controller with a linear quadratic regulator (LQR) and added a disturbance observer (DOB) to estimate the source noise. Experiments were conducted using an active vibration isolation system; the results verified the feasibility and performance of the designed controller. The accelerations along the axis (Z-, X-, Y-) directions were suppressed in the low-frequency band within 200 Hz, and the root-cumulative power spectral densities (PSDs) declined to 1.17 × 10−5, 7.16 × 10−6, and 8.76 × 10−6 g. This comprehensive vibration met the requirements of an ultrastable laser.

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Section: Problem and System Descriptionmentioning

confidence: 99%

Design of Active Vibration Isolation Controller with Disturbance Observer-Based Linear Quadratic Regulator for Optical Reference Cavities

Qian

Xie

Jia

et al. 2022

Sensors

Self Cite

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“…For example, satellites for gravitational waves detection [6] and space quantum communication [7] rely on space optical atomic clocks. The length of the optical reference cavity in the clock changes because of microvibration, making the high-precision reference difficult [8]. It is necessary to measure and monitor microvibrations on these satellites.…”

Section: Introductionmentioning

confidence: 99%

Microvibration streaming measurements using dynamic compressed sensing for satellites

Zhou

Zhu

et al. 2023

Meas. Sci. Technol.

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Long-term monitoring of satellite microvibrations generates a significant amount of data streams, placing strain on satellites with limited transmission capacity. To relieve this transmission strain, a dynamic compressed sensing (CS) framework is proposed for satellite microvibration measurements. Microvibration streams are measured block by block and then reconstructed by a dynamic recovery algorithm. The recovery solution of one block can be used as a priori knowledge for the next block, allowing for faster updates. However, the existing dynamic recovery algorithms are only applicable to the real domain and cannot be applied to the microvibrations projected on a Fourier basis in the complex domain. In light of this, the dynamic homotopy algorithm is expanded to the complex domain to deal with microvibration signals that are sparse on the Fourier basis. In comparison to the traditional uniform sampling methods, the experimental results show that the dynamic CS with the expanded recovery algorithm can achieve a maximum root-mean-square acceleration (Grms) deviation of 4% in power spectrum density (PSD) with 1/5 sampling points. Compared with recovery algorithms applicable to fixed measurements, the dynamic algorithm can achieve comparable accuracy in about 1/3 of computation time. The experimental results demonstrate the feasibility of satellite microvibrations measurement using dynamic CS.

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“…Building a feedback control loop is a simple and efficient method that has been widely used in active vibration control (Cheng et al, 2019; Ma et al, 2022; Qian et al, 2022; Sharma et al, 2019). To reduce the main and super harmonic resonance of a flexible simple beam, Liu et al (2016) proposed an optimal delay feedback control method with a piezoelectric sensor and driver.…”

Section: Introductionmentioning

confidence: 99%

Active vibration hybrid control strategy based on multi-DOFs piezoelectric platform

Pu,

Fu,

Wang

et al. 2023

Journal of Intelligent Material Systems and Structures

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With the increasing requirements for vibration isolation in multiple degrees of freedom (multi-DOFs), active control strategy is becoming more meaningful. However, the vibration isolation performance is limited by the time delay of feedback control, and cannot meet higher requirements. Therefore, this paper proposes a multi-DOFs active vibration hybrid control (AVHC) strategy based on a piezoelectric platform. The AVHC integrates the adaptive feedforward control based on the modified recursive least squares (MRLS) algorithm, and the feedback control based on the integral force feedback (IFF) algorithm. To achieve advanced response, the ground-based vibration signal is offset by the MRLS algorithm. To further reduce the coupling of multi-DOFs, the feedback and feedforward coordinates are fused through the matrix transformation, and the signals are linearly superimposed by the AVHC. The experimental results show that the AVHC can further reduce the resonance peaks of the three translational directions ( X/ Y/ Z) compared with the feedback (FB) control. The resonance peaks are reduced from 14.6 dB (FB) to 3.11 dB (AVHC), from 14.56 dB (FB) to 5.14 dB (AVHC), and from 12.44 dB (FB) to 3.78 dB (AVHC) in X/ Y/ Z directions, respectively. The attenuation rates are improved by 73.36%, 66.19%, and 63.10% in X/ Y/ Z directions, respectively.

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Development of Active Microvibration Isolation System for Precision Space Payload

Cited by 13 publications

References 30 publications

Design of Active Vibration Isolation Controller with Disturbance Observer-Based Linear Quadratic Regulator for Optical Reference Cavities

Design of Active Vibration Isolation Controller with Disturbance Observer-Based Linear Quadratic Regulator for Optical Reference Cavities

Microvibration streaming measurements using dynamic compressed sensing for satellites

Active vibration hybrid control strategy based on multi-DOFs piezoelectric platform

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