Development of Integrated Simulation Tool for Jitter Analysis

Lee, Dae-Oen; Yoon, Jae-San; Han, Jae‐Hung

doi:10.5139/ijass.2012.13.1.64

Cited by 21 publications

(5 citation statements)

References 16 publications

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“…The dominant disturbances of the system are forces and moments caused by static and dynamic imbalances of the flywheel (Lee et al, 2012). The disturbances are harmonic functions of time and have frequencies equal to the rotating speed X of the flywheel and amplitudes proportional to X 2 , which can be expressed as follows: …”

Section: Disturbance Modelmentioning

confidence: 99%

Modeling and analysis of a flywheel microvibration isolation system for spacecrafts

Wei

Luo

et al. 2015

Advances in Space Research

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Section: Disturbance Modelmentioning

confidence: 99%

Modeling and analysis of a flywheel microvibration isolation system for spacecrafts

Wei

Luo

et al. 2015

Advances in Space Research

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“…Integrated analysis supports structure design and verification of high-level optical requirements for image quality and sensitivity [26,27,28]. It can also extrapolate the effect of microvibrations on opto-mechanical stability [29].…”

Section: Simulationmentioning

confidence: 99%

Simulating and Testing Microvibrations on an Optical Satellite Using Acceleration Sensor-Based Jitter Measurements

Chen

Xuan

Zhang

et al. 2019

Sensors

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The present study uses a method to address microvibrations effects on an optical satellite by combining simulations and experiments based on high-precision acceleration sensors. The displacement and angular displacement of each optical component can be obtained by introducing flywheel perturbation data from a six-component test bench to the finite element model of the optical satellite. Combined with an optical amplification factor inferred from the linear optical model, the pixel offset of the whole optical system is calculated. A high accuracy and broad frequency range for a new microvibration measurement experimental system is established to validate the simulation. The pixel offset of the whole optical system can be measured by testing the acceleration signals of each optical component and calculating optical amplification factors. The results are consistent with optical imaging test results, indicating correctness of the experimental scheme and the effectiveness of the simulation. The results suggest that the effect of microvibrations on a camera can be verified by using mechanical simulators instead of a whole optical camera for the experiment scheme, which is demonstrated to be an effective way for increasing efficiency in jitter measurements.

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“…The integrated modeling and analysis method, as a comprehensive evaluation method integrating multiple disciplines, is widely used by researchers in the optical performance analysis and structural optimization of optomechanical systems. For example, Dae-Oen and Jae-Hung 21 proposed a comprehensive framework, which integrated the state-space model of the modal structure and the Cassegrain reflector model to evaluate the reaction wheel’s perturbation on the performance of optical payloads. Serief 22 quantitatively estimated the microvibration effects on the performance of the Alsat-1B imager using modulation transfer function and ground microvibration test results.…”

Section: Introductionmentioning

confidence: 99%

Integrated modeling and analysis of the microvibration effects on the line-of-sight stability for the space laser communication terminal

Li,

Guo,

Qin

et al. 2024

Opt. Eng.

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Accurately assessing the microvibration effects on the line-of-sight (LOS) stability for the space laser communication terminal (LCT) is crucial for ensuring the long-term stability of communication links. To address this challenge, an integrated modeling approach is proposed to analyze the microvibration effects on the LOS stability for the space LCT. First, the LCT's finite-element model, consisting of the off-axis telescope antenna and the rear optical path, is built to extract the nodes' data of each surface on the optical element under the microvibration. Then the dual quaternion, which could avoid the solution error and insufficient generalization ability of the traditional least squares method, is used to calculate the surface's rigid body displacement on the optical element. Furthermore, combined with the LCT's optical sensitivity matrix obtained by the regression analysis method, the LOS jitter of the terminal is calculated to evaluate the LCT's stability and guide the structural optimization. Finally, a test is conducted to validate the reliability of the integrated modeling approach. Simulation and experimental results show that the method proposed can further improve the accuracy of analysis and guide the structural optimization of LCT.

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Development of Integrated Simulation Tool for Jitter Analysis

Cited by 21 publications

References 16 publications

Modeling and analysis of a flywheel microvibration isolation system for spacecrafts

Modeling and analysis of a flywheel microvibration isolation system for spacecrafts

Simulating and Testing Microvibrations on an Optical Satellite Using Acceleration Sensor-Based Jitter Measurements

Integrated modeling and analysis of the microvibration effects on the line-of-sight stability for the space laser communication terminal

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