Integrated structure and precision control of flat voice coil actuator for non‐contact satellite

Zhongxing, Tang; Xu, Yundou; Jiang, Bin; He, Liang; Zhao, Yue

doi:10.1049/joe.2018.9382

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…NCLAs, with advantages such as fast response times and high accuracy, are the core components of NCCPFS [7] and are crucial for achieving high-precision attitude control [8,9], which has already established relatively mature structural configurations and control strategies after years of research and development [10,11]. NCLAs are the attitude controller of PM, and its internal excitation coils generate periodic control torques based on a uniform magnetic field to act on the PM.…”

Section: Introductionmentioning

confidence: 99%

In-Flight Calibration of Lorentz Actuators for Non-Contact Close-Proximity Formation Satellites with Cooperative Control

Liao,

Song,

Weng

et al. 2024

Actuators

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The non-contact close-proximity formation satellite (NCCPFS) is one of the technical solutions to improve the attitude performance, consisting of a payload module (PM) and a support module (SM). The non-contact Lorentz actuator (NCLA), as the core components of the NCCPFS, directly affect the attitude control performance of the entire satellite. In order to ensure the ultra-high attitude pointing performance and stability of the PM, an in-flight calibration method for the NCLAs based on minimum model error (MME) algorithm and Kalman filtering (KF) with cooperative control strategy is proposed in this article. In this method, the NCLAs generate a periodic nominal torque that causes the attitude of the PM to be periodically deflected. This periodic torque also reacts on the SM, and the SM counteracts this periodic torque through the flywheel to realize the cooperative tracking relative to the PM. Then, the gyroscope data are substituted into the MME algorithm to obtain the angular acceleration of the two modules, and the KF algorithm is adopted to observe the actual output torque of the NCLAs to complete the in-flight calibration of the NCLAs. Numerical simulation results show that the accuracy of the proposed calibration algorithm can reach about 8%, which proves the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

In-Flight Calibration of Lorentz Actuators for Non-Contact Close-Proximity Formation Satellites with Cooperative Control

Liao,

Song,

Weng

et al. 2024

Actuators

Self Cite

View full text Add to dashboard Cite

show abstract

“…Multi-dynamic refers to the inconsistency of the change cycle of satellite state parameters. When using the attitude and orbit control component-level model to calculate the attitude and orbit control indicators, the simulation step size is more appropriate in milliseconds [27]. In an attempt to accurately calculate power indicators, a detailed model of the power supply system is necessary, which requires data on the sunlit and Earth shadow areas of the satellite, as well as data on several orbital periods.…”

Section: Introductionmentioning

confidence: 99%

Multi-Granularity Modeling Method for Effectiveness Evaluation of Remote Sensing Satellites

Lei,

Dong

2023

Remote Sensing

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The effectiveness indicator system of remote sensing satellites includes various satellites capabilities. Effectiveness evaluation is the process of calculating these indicators in the digital world, involving many different physical parameters of multiple subsystems. Model-based simulation statistics method is the mainstream approach of effectiveness evaluation, and digital twin is currently the most advanced modeling method for simulation. The satellite digital twin model has the characteristics of multi-dynamic, multi-spatial scale and multi-physics field coupling, which gives rise to challenges related to the stiff problem of ordinary differential equations and multi-scale problem of partial differential equations to the calculation process of indicators. It is difficult to solve these problems by breakthroughs in numerical solution methods. This paper uses the sparsity of the satellite system to group each indicator of the effectiveness evaluation indicator system according to the change period. The satellite system model is decomposed into multiple modules according to the composition and structure, and a series of models with different simulation fidelity are established for each module. The optimization schemes for selecting model granularity when calculating indicators by group is given. Simulation results show that this approach considers the coupling between systems, grasps the main contradiction of indicator calculation and overcomes the loss of indicator accuracy caused by the separate calculation of each subsystem under the neglect of coupling in the traditional method. Additionally, it avoids the difficulty in numerical calculation caused by coupling, while simultaneously balancing the accuracy and efficiency of the model simulations.

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Integrated structure and precision control of flat voice coil actuator for non‐contact satellite

Cited by 2 publications

References 11 publications

In-Flight Calibration of Lorentz Actuators for Non-Contact Close-Proximity Formation Satellites with Cooperative Control

In-Flight Calibration of Lorentz Actuators for Non-Contact Close-Proximity Formation Satellites with Cooperative Control

Multi-Granularity Modeling Method for Effectiveness Evaluation of Remote Sensing Satellites

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