Influence and experiment of cable-net manufacturing errors on surface accuracy of mesh reflector antennas

Sun, Zihan; Duan, Baoyan; Zhang, Yiqun; Deng, Yang

doi:10.1016/j.cja.2021.12.004

Cited by 16 publications

(2 citation statements)

References 21 publications

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“…Therefore, the deployable mechanism for space applications has gradually become the focus of research [1]. A lot of work has been executed on mechanism design [2][3][4] and dynamic characteristics [5][6][7]. The focus is on deployable antennae [8,9] and spatial multi closed-loop linkage.…”

Section: Introductionmentioning

confidence: 99%

Development and Rotation Characteristics Analysis of a Large-Scale Deployable Arm

et al. 2023

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In the spin-off acceleration stage during high-speed rotation in space, the deployable arm of the space gravity simulation device must withstand a large axial centrifugal force and a driving torque. In this paper, a large-scale high-speed rotating deployable arm is proposed, and the relevant characteristics during the rotation process are analyzed. A new driving mode of towed deployment is proposed that can lead to the rapid and efficient deployment of a large-scale deployable arm. First, an optimized configuration of a deployable arm is proposed. Second, the deployment driving process of the deployable arm under several different drag driving modes is simulated and analyzed, and a comparative analysis is performed to select a simple and reliable drag deployment driving scheme. Then, the effects of various disturbances on the posture of the deployable arm during the rotation process are explored, guiding the posture control of the deployable arm. Finally, a 10 m four-unit prototype is developed for the stiffness and rotation tests, which verify that the theoretical analysis in this paper is correct.

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Section: Introductionmentioning

confidence: 99%

Development and Rotation Characteristics Analysis of a Large-Scale Deployable Arm

et al. 2023

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“…Yang [28] analyzed the sensitivities of various topologies of the reticulated shell. Sun et al [29] mathematically deducted the sensitivity of reflector surface accuracy with respect to the random errors of the unstressed cable length and proposed a nonbutton connecting method. Jin et al [30] proposed a global error influence computing method and concluded that the lengths of the cables and the size of the cable cross-sectional area are important factors influencing the cable net of a 500 m aperture spherical radio telescope.…”

Section: Introductionmentioning

confidence: 99%

Error Influence Simulation of the 500 m Aperture Spherical Radio Telescope Cable-Net Structure Based on Random Combinations

Wang,

Ding,

Ruan

et al. 2023

Sustainability

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The reflector of a Chinese 500 m aperture spherical radio telescope is supported by a giant cable-net structure. In the actual operation process, active displacement observation is realized by connecting the actuators with the control cables to adjust the cable net, which requires high manufacturing and installation accuracy. In this study, an error sensitivity computing method based on a normal distribution is adopted to perform single-error computing and multi-error coupling computing and to investigate the effect of the length error of all the cables, tensioning force error of active surface cables, and installation error of external nodes on the cable force. The results show that the length error of the surface cables and the installation error of the external nodes are the main factors affecting the cable force, while the length error of the control cables is a secondary factor. The coupling effect of multiple errors is not the linear superposition of each error’s influence; therefore, all the error factors should be comprehensively considered for coupling computing to determine the control index. Through multi-error coupling computing, it is determined that the length error limits of the surface cables and control cables are ±1.5 mm and ±20 mm, respectively, the tensioning force error limit of the active surface cables is ±10%, and the installation error limit of the external nodes is ±50 mm.

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Error Analysis of a Deployable Scissor-Like Mechanism with Joint Clearances

Xiao,

Wang,

Lyu

et al. 2023

Mechanisms and Machine Science

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Influence and experiment of cable-net manufacturing errors on surface accuracy of mesh reflector antennas

Cited by 16 publications

References 21 publications

Development and Rotation Characteristics Analysis of a Large-Scale Deployable Arm

Development and Rotation Characteristics Analysis of a Large-Scale Deployable Arm

Error Influence Simulation of the 500 m Aperture Spherical Radio Telescope Cable-Net Structure Based on Random Combinations

Error Analysis of a Deployable Scissor-Like Mechanism with Joint Clearances

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