Design and modeling of an electromagnetic launcher for weft insertion system

Owlia, Emad; Mirjalili, Seyed Abbas; Shahnazari, Mostafa

doi:10.1177/0040517518755793

Cited by 12 publications

(8 citation statements)

References 34 publications

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“…A finite-element method was used to develop a 3-D imitating launching model. The experimental results were found to be in good agreement with the numerical model [127].…”

Section: 22supporting

confidence: 72%

Cotton in the new millennium: advances, economics, perceptions and problems

et al. 2018

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Cotton is the most significant natural fibre and has been a preferred choice of the textile industry and consumers since the industrial revolution began. The share of man-made fibres, both regenerated and synthetic fibres, has grown considerably in recent times but cotton production has also been on the rise and accounts for about half of the fibres used for apparel and textile goods. To cotton's advantage, the premium attached to the presence of cotton fibre and the general positive consumer perception is well established, however, compared to commodity manmade fibres and high performance fibres, cotton has limitations in terms of its mechanical properties but can help to overcome moisture management issues that arise with performance apparel during active wear. This issue of Textile Progress aims to: i. Report on advances in cotton cultivation and processing as well as improvements to conventional cotton cultivation and ginning. The processing of cotton in the textile industry from fibre to finished fabric, cotton and its blends, and their applications in technical textiles are also covered. ii. Explore the economic impact of cotton in different parts of the world including an overview of global cotton trade. iii. Examine the environmental perception of cotton fibre and efforts in organic and genetically-modified (GM) cotton production. The topic of naturally-coloured cotton, post-consumer waste is covered and the environmental impacts of cotton cultivation and processing are discussed. Hazardous effects of cultivation, such as the extensive use of pesticides, insecticides and irrigation with fresh water, and consequences of the use of GM cotton and cotton fibres in general on the climate are summarised and the effects of cotton processing on workers are addressed. The potential hazards during cotton cultivation, processing and use are also included. iv. Examine how the properties of cotton textiles can be enhanced, for example, by improving wrinkle recovery and reducing the flammability of cotton fibre.

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“…A finite-element method was used to develop a 3-D imitating launching model. The experimental results were found to be in good agreement with the numerical model [127].…”

Section: 22supporting

confidence: 72%

Cotton in the new millennium: advances, economics, perceptions and problems

et al. 2018

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“…Therefore, long-distance weft insertion can be achieved. The clip weft device is stopped by the brake receiving device (7). Next, it goes through the recovery device (8), the conveying device ( 9) and the push device (10).…”

Section: Principles Of Electromagnetic Launch Weft Insertion For Sbw Loomsmentioning

confidence: 99%

“…A number of new weft insertion methods are being studied, including magnetic, 2 electromagnetic, [3][4][5][6][7] pneumatic-rapier, micro-shuttle, servo-cylinder 8 and weft inertia. 1 For weaving common width textiles, the rapier, shuttle, air jet, water jet and projectile weft insertion technologies meet the requirements of weft insertion.…”

mentioning

confidence: 99%

“…The effect of these parameters on the velocity of the projectile was investigated. A coil electromagnetic launcher was used as the accelerator for weft insertion for ordinary projectile looms by Owlia and colleagues 7 in 2018. In this system, the velocity of the ferromagnetic projectile was measured with an image-processing technique.…”

mentioning

confidence: 99%

“…The general structures of electromagnetic launchers have been studied and can be divided into three types: coil, rail and reconnection. [13][14][15] The coil launcher is appropriate for weft insertion 7 and can provide sufficient flight speed for the projectile. The flight speed of the shuttle for traditional shuttle looms has been modeled.…”

mentioning

confidence: 99%

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Analysis of the magnetic field and electromagnetic force of a non-striking weft insertion system for super broad-width looms, based on an electromagnetic launcher

Shunqi

Xiaoyu

et al. 2019

Textile Research Journal

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Weft insertion based on electromagnetic launch technology is a novel and very promising approach for super broad-width (6–12 m) (SBW) looms. There are considerable challenges involved in designing such a system, including analyzing the electromagnetic field while incorporating the effect of a clip weft device, and accurately calculating the electromagnetic and motion parameters of the weft insertion mechanism. In this study, an electromagnetic launch, non-striking weft insertion method for an SBW loom is proposed. The electromagnetic field is analyzed with the finite element method and includes the effect of a clip weft device. Simulation of the motion, analysis of the maximum flight speed of the clip weft device and the work done by electromagnetic force are presented. We also describe an experimental model for electromagnetic launch weft insertion and calculate the electromagnetic force required for weft insertion, using analytical methods and numerical finite element methods. Comparison of the results with measured values shows that this electromagnetic launch weft insertion system has good flexibility. In addition, the weft insertion speed required for different width looms can be obtained by changing the current of the coil or the coil stage number of the launching system.

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Modeling and optimization of a modified iron-yoked electromagnetic propulsion system using the gravitational search algorithm

Magdy,

El-Hussieny,

Fath El-Bab

et al. 2024

Sci Rep

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Potential uses for electromagnetic launchers in defense systems, space exploration, and transportation have recently emerged. In addition, this accelerator has many applications, such as deploying small satellites into low-earth orbit and accelerating high-speed trains (e.g., bullet trains and Hyperloop) with a low-cost propulsion system instead of expensive linear motors, particularly in space applications. Therefore, the full capability and optimization of these launchers’ efficiency are still required. Therefore, this paper focuses on presenting a new design to decrease the coil’s magnetic circuit reluctance and boost the magnetic flux lines by adding a laminated iron yoke surrounding the coil. This design makes the inductance value of the iron-yoked accelerator twice the inductance in case of the absence of the iron-yoke at its peak. Additionally, the initial inductance of the iron-yoked accelerator is approximately 65% higher than that of the coil without the iron yoke. Consequently, the modified design proposed an efficiency of 17.5%, which represents a 60% improvement over the efficiency of the regular accelerator. In addition, the introduced design eliminates the suck-back force using a fast-switching device (IGBT) to switch the coil off when the projectile reaches half of the coil. Moreover, a mathematical model for the iron-yoked accelerator is built on MATLAB Simulink and validated experimentally. An artificial intelligence optimization technique, the gravitational search algorithm (GSA), is used to optimize the accelerator parameters, such as the number of turns, capacitor value, and capacitor voltage. Finally, the experimental evaluation of the GSA-optimized system demonstrated an additional 15% enhancement in efficiency, bringing the total efficiency to 20%.

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Design and modeling of an electromagnetic launcher for weft insertion system

Cited by 12 publications

References 34 publications

Cotton in the new millennium: advances, economics, perceptions and problems

Cotton in the new millennium: advances, economics, perceptions and problems

Analysis of the magnetic field and electromagnetic force of a non-striking weft insertion system for super broad-width looms, based on an electromagnetic launcher

Modeling and optimization of a modified iron-yoked electromagnetic propulsion system using the gravitational search algorithm

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