Design and dynamic analysis of a scissors hoop-rib truss deployable antenna mechanism

Han, Bo; Li, Xiangkun; Sun, Jun; Xu, Yundou; Yao, Jiantao; Zhao, Yongsheng

doi:10.1016/j.dt.2023.02.019

Cited by 7 publications

(2 citation statements)

References 43 publications

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“…In the industry, the scissor mechanism [5][6][7] is commonly used. By adjusting the position of the internal rotating joint via a primary scissors mechanism, an unequal-length scissors mechanism [8] is proposed. An elastically loaded scissors mechanism is employed in the creation of lightweight limbs for multi-legged robots.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Optimization of Scissors Mechanism of Electric Charging Bow

Wu,

Li,

et al. 2024

Advances in Transdisciplinary Engineering

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To improve the charging bow scissor mechanism’s operating performance, a parametric model of the electric charging bow scissor mechanism was established, the scissor mechanism’s hinge point coordinates were parameterized, and the optimization algorithm was used to optimize the parameters with a lifting force of 5000N as the target. First, the optimized structural parameters are obtained after multiple iterations using the NLPQLP direct numerical algorithm; then, the strength and stiffness simulation of the optimized scissor mechanism is performed to meet the strength and deformation requirements; and finally, the constant amplitude load method is used to conduct fatigue analysis on the optimized structure. According to the optimization results, the maximum lifting force of the scissor mechanism in the electric charging bow is reduced by approximately 18%. The lifting force is compared to the lifting force collected by the sensor, which verifies the structural optimization’s effectiveness. Simultaneously, strength and stiffness simulation analysis determines the mechanism’s material and processing technology, while fatigue analysis provides the foundation for subsequent life optimization. The modeling and analysis process used is simple and reliable and it has some engineering practical value.

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Section: Introductionmentioning

confidence: 99%

Simulation and Optimization of Scissors Mechanism of Electric Charging Bow

Wu,

Li,

et al. 2024

Advances in Transdisciplinary Engineering

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“…In this context several methods have been developed to meet the requirements demanded by scientists and researchers, In the 1980's an iterative method noted SIT (Spectral Iterative Technique) was proposed by Kio-Mitta and Vanden berg for electromagnetic diffraction problems and successfully applied to the analysis of reflector antennas and diffraction by any objects [23]. A method close to the spectral methods and which allows the resolution of various problems of electromagnetics was disclosed to the scientific community by H.Baudrand in 1995 it is the iterative method noted WCIP (Wave Concept Iterative Process) [24].It is an integral method based on the wave concept for solving electromagnetic scattering problems, analysis of planar circuits and has been extended to SIW (substrate integrated wave guide) structures around the year 2009 [25] [26]. The originality of this method is its ease of implementation due to the absence of test functions and its speed essentially due to the systematic use of the fast Fourier transform in mode (F M T ) as it presents a low number of unknowns.…”

Section: Introductionmentioning

confidence: 99%

High Gain 2X2 Planar Array Antenna for 5G Applications at 3.6GHz

Mondir

Setti

Ennasar

et al. 2023

Preprint

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In this study, we propose the design of an antenna array applicable to fifth-generation (5G) smartphones. The proposed antenna structure consists of a 2 x 2 patch antenna. The proposed antenna has a small size of 106.07 x 106.07 mm2 and is printed on an FR-4 substrate. It has good radiation efficiency in the 3.6 GHz band and a high gain of 10.6 dB. The bandwidth of the proposed antenna, which is useful for 5G applications, is approximately 0.38 GHz (3.877 - 3.295 GHz) and includes the allocated band from (3400 MHz to 3600 MHz) for 5G cellular communication systems. The objective of this work is to characterise a new antenna using the wave concept iterative procedure (WCIP), a fast numerical method, and validation is carried out by comparison using finite integration techniques (FIT). The results obtained from the two methods are in close agreement, validating the design concept. Thanks to its simple structure, compact size, good radiation performance and ease of manufacture and integration with application-specific printed circuit boards, this antenna is suitable for 5G applications. The structure was created and examined using a Keysight PNA network analyser to demonstrate its effectiveness and compliance. The prototype antenna shown is tested and the measured results are in good agreement with the WCIP method.

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