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Journal articles on the topic 'Spinning system'

Author: Grafiati

Published: 8 September 2021

Last updated: 18 February 2022

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1

Sawhney, A. P. S., and L. B. Kimmel. "Air and Ring Combination in Tandem Spinning." Textile Research Journal 67, no. 3 (March 1997): 217–23. http://dx.doi.org/10.1177/004051759706700310.

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With the objective of boosting ring spinning productivity, a new tandem spinning system combining air-jet and ring spinning technologies in continuous tandem is investigated. In this “air-plus-ring” tandem spinning system, a drafted roving strand as it emerges from the front roller nip feeds into a single- or dual-jet air nozzle where it is subjected to a vortex of compressed air, producing a pneumatically entangled, false-twisted, partially strengthened strand. This so-called prefabricated, air-bolstered strand continuously feeds into a standard ring spinning zone and is ultimately spun into a novel, single-component yarn. By spinning a few cotton and cotton-blend yarns with the lowest practical twist levels possible on both the tandem and conventional ring spinning systems, we show that a tandem spun yarn can be produced with a relatively lower (true ring) twist level than a pure ring spun yarn. To an extent, the tandem spinning's air-bolstering action reinforces the drafted fibrous strand, contributing to yarn formation and hence character. Since ring spinning productivity is inversely proportional to yarn twist level, the relatively lower twist level required in tandem spinning allows a proportionately higher yarn production speed (in some cases, up to 50% faster than the conventional ring spinning), while maintaining spindle speed at the traditional, optimum level imposed by the limiting traveler speed. Tandem spun yarns, however, are somewhat different from, and generally weaker than, conventional ring spun yarns. This paper briefly describes a prototype of the new tandem spinning system developed on a laboratory Spintester, and shows spinning parameters and properties of a few yarns produced on both the tandem arid conventional ring spinning systems, each employing the traditional (maximum) optimum spindle speed of 10,000 rpm for a given 5.0 cm (2 inch) diameter ring.

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2

DEMIR, Murat, and Musa KILIC. "A MODIFIEDTWIST-SPINNING TECHNOLOGY:THREE-ROVING YARN SPINNING." TEXTEH Proceedings 2019 (November 5, 2019): 82–85. http://dx.doi.org/10.35530/tt.2019.18.

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Ring spinning is one of the oldest and most widely used spinning technology. Recently, many alternative spinning technologies have been introduced. Some of these technologies work on completely different working principle while some of them were developed from conventional system with some modifications. Siro- spun technology which two strands are fed into drafting zone simultaneously is one of the systems that developed from conventional ring spinning. This study focuses on development of three-roving yarn production system that was inspired from siro-spun technology. Roving funnel and delivery cylinder used in siro-spun technology were redesigned for three-roving yarn production and attached on conventional system. Three-roving yarns produced in ring spinning machine were compared with three plied yarns in terms of physical, mechanical and structural properties. For better assessment of this new system, different raw material types were used in yarn production. Results showed that three-roving yarns have better hairiness values and similar mechanical properties for all raw material types. However, unevenness still needs to be improved by further developments on this new system.

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3

Aydogmus, Yasemin, and Hassan M. Behery. "Spinning Limits of the Friction Spinning System (DREF-III)." Textile Research Journal 69, no. 12 (December 1999): 925–30. http://dx.doi.org/10.1177/004051759906901207.

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4

Khan, M. E. "Composite system spinning reserve assessment in interconnected systems." IEE Proceedings - Generation, Transmission and Distribution 142, no. 3 (1995): 305. http://dx.doi.org/10.1049/ip-gtd:19951716.

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5

Yilmaz, Demet, and Mustafa Resit Usal. "Effect of Nozzle Structural Parameters on Hairiness of Compact-Jet Yarns." Journal of Engineered Fibers and Fabrics 7, no. 2 (June 2012): 155892501200700. http://dx.doi.org/10.1177/155892501200700209.

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Hairiness significantly influences the appearance of yarns and fabrics. New methods and spinning systems have been offered to reduce it. Nevertheless, there is still the quest for easy, low-cost processes to produce good quality yarns with reduced hairiness. Therefore, due to its considerable importance for spun yarns, we worked on a new spinning method to decrease yarn hairiness. Many researchers have been studying the use of air nozzles in the spinning and also the winding processes, and they indicated that hairiness decreases by up to 40–50%. From this point, we investigated the use of an air nozzle on a compact spinning system and discussed the effect on yarn hairiness. The nozzle was positioned at the exit of the drafting system on a RoCoS compact spinning system and pressurized air was fed into the nozzle by the compressor during spinning. We called the combination of an air nozzle and a compact spinning system a Compact-Jet spinning system. In the literature, there are no such trials. At the end of the study, it was determined that a Compact-Jet spinning system truly improves hairiness by up to 40% in comparison to the compact spinning system and by up to 70% compared with the conventional ring spinning system. Regarding the nozzle structural parameters, the changes in hairiness indicate that the main hole diameter and nozzle outlet design make the most important contributions in reducing yarn hairiness; whereas the injector angle and nozzle head type show weaker effects. As a result, the Compact-Jet can be considered as an innovative spinning system providing the opportunity to produce less hairy yarn. Additionally, we believe that this study makes an important contribution to the research activities in the spinning field and its associated literature.

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6

Cui, Hong, and Chong Wen Yu. "Influence of Spinning Speed at Self-Twist Spinning System on Yarn Quality." Advanced Materials Research 332-334 (September 2011): 560–63. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.560.

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The effect of spinning speed on yarn quality at self-twist spinning system was investigated. The yarns were assessed for different characteristics using objective tests. The results show that yarn hairiness of self-twist yarn increases with the increase of spinning speed and yarn tenacity and extension decrease with increment of spinning speed. The results also show that yarn irregularity, yarn imperfections and yarn twist level have no obvious changes with the increasing in spinning speed. Furthermore, the longitudinal and cross-sectional shape of self-twist yarn were observed and the pictures show that S-twist and Z-twist zone have almost the same structure as the two-plied yarn at ring spinning system and no twist zone has an approximately 45mm length which can influence the strength of the self-twist yarn.

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7

Wei, Li, Suping Huang, Ting Zhu, and Xuzhong Su. "Research on shape of spinning triangles in the ring spinning system." Journal of The Textile Institute 107, no. 4 (April 21, 2015): 420–30. http://dx.doi.org/10.1080/00405000.2015.1034935.

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8

Shao, Ruiqi, Longdi Cheng, Wenliang Xue, Yanping Yu, and Ruiyun Zhang. "Theoretical study of the effects on yarn strength in a modified ring spinning system." Textile Research Journal 89, no. 23-24 (May 2, 2019): 5014–23. http://dx.doi.org/10.1177/0040517519846071.

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A modified ring spinning system using a dynamic twist-resistant device has been employed to produce yarn. The modified device blocks twist to propagate to the spinning triangle, which changes the distribution of twist in the spinning area and increases the height of the spinning triangle. In this paper, two kinds of yarn counts (30 and 40 Ne) are spun in the conventional and modified ring spinning with twist multipliers of 3.2, 3.6, and 4.0. The results show that the yarn spun by the modified ring spinning system possesses a higher strength compared with the conventional yarn except in the higher twist multiplier. The increase in yarn strength was theoretically analyzed according to the model of yarn strength. The yarn strength was calculated by considering the original fiber strain in the yarn and the fiber strain due to yarn strain. In the model, the fiber migration was considered and the fiber entanglement caused by fiber migration was ignored to simplify the calculation. Four potentially important parameters of the spinning triangle, the height of the spinning triangle, the migration coefficient, the inclination angle, and the spinning tension, were proposed and their individual and interaction effects on yarn strength were analyzed. The results demonstrate that yarn strength increased with the increase of height of the spinning triangle and the migration coefficient. The inclination angle and the spinning tension have a relatively small influence on yarn strength when the height of the spinning triangle is higher.

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9

Zhou, Jian Hong, Peng Shen, and Zheng Weng. "Study on Numerical Control System of Lampcover Spinning Machine." Applied Mechanics and Materials 336-338 (July 2013): 1303–8. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1303.

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Chinese spinning technology has developed for more than 40 years. Especially in recent years, various kinds of spinning equipment have been developed and contributed a lot to Chinese equipment manufacturing industry, but it is blank in the light industry and civil industry. Due to the high cost and programming complexity of NC machine tools, we have no dedicated spinning machine and mostly rely on simple manual in the lampcover production. As to the above problems, we developed the lampcover NC spinning machines that can generate the track automatically and complete automatic control in the machining process.

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10

Gulsevincler, Ekrem, Mustafa Resit Usa, and Demet Yilmaz. "Modular Jet-Ring Yarn Spinning System." TEKSTILEC 63, no. 2 (June 30, 2020): 80–93. http://dx.doi.org/10.14502/tekstilec2020.63.80-93.

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11

Khan, Md Khalilur Rahman, and Mohammad Naim Hassan. "Solution Blow Spinning (SBS): A Promising Spinning System for Submicron/Nanofibre Production." Textile & Leather Review 4, no. 3 (September 7, 2021): 181–200. http://dx.doi.org/10.31881/tlr.2021.04.

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Submicron/nanofibres possess great potential for application in different areas because of their amazingly high surface area-to-weight ratio. The demand for fabrication of such fibres on a huge scale is increasing with the fast improvement of nanotechnology. Traditionally, nanofibre fabrication methods have intrinsic faults, limiting their application in industry. Solution blow spinning (SBS) is a viable option for producing adaptable and conformable submicron/nanofibre mats on a variety of surfaces. The technique can be employed to produce submicron/ nanofibres with only a simple commercial airbrush, a concentrated polymer solution, and a compressed gas source. It depends on the high velocity of decompressed air that allows the rapid stretching and evaporation of the solvent from a polymeric solution jet at the outlet of the concentric nozzles system. Along with recent advancements, the importance and drawbacks of the solution blow spinning system in comparison to other methods, such as electrospinning and melt blowing, are briefly discussed. Furthermore, the mechanisms of co-axial SBS spinning and micro SBS spinning system for submicron/nanofibre fabrication are also described. Drawbacks and research challenges of SBS are also addressed in this paper.

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12

Qiu, Ju Sheng, Zhi Li Zhong, Huan Guo, and Xun Gai Wang. "Investigation of Movable Balloon Controller System on a Ring Spinning Frame." Advanced Materials Research 175-176 (January 2011): 474–79. http://dx.doi.org/10.4028/www.scientific.net/amr.175-176.474.

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Compared to other spinning system, the ring spinning process has been used to produce higher quality yarns, but with a much lower spinning efficiency, resulted from the relatively high spinning tension that leads to increased yarn breakage rates and makes high power consumption. Thus, depressing yarn tension is essential to change the status. In this paper, we design a movable balloon controller system to reduce yarn tension. The system is automatic, composed of powder switch, touch screen, PLC (Programmable Logic Controller), pulling-thread displacement sensor, controller of step motor, step motor and linear module. PLC, the core of the system, controls the position of the balloon controller by a series of programs. Then yarn tension was tested while spinning with movable balloon control ring, fixed balloon control ring and no balloon control ring, respectively. The result shows that the yarn tension can be depressed indeed by equipping this movable balloon controller system to some extent. Additionally, we find that the number of hairiness of ring spun yarns with this system can be reduced to some extent, while yarn tensile properties are not as sensitive to be worse. It is significant to cut down ends-down rate, improve the quality of ring spun yarns, the spinning efficiency as well as the energy efficiency of ring spinning.

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13

Zhou, Zhi Ming, Wei Jiu Huang, M. Deng, Min Min Cao, Li Wen Tang, Jing Luo, Xiao Ping Li, and Hua Xia. "Numerical Simulation on Rapidly Solidified Melt Spinning CuFe10 Alloys." Advanced Materials Research 228-229 (April 2011): 416–21. http://dx.doi.org/10.4028/www.scientific.net/amr.228-229.416.

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The numerical simulation model of single roller rapid solidification melt-spinning CuFe10 alloys was built in this paper. The vacuum chamber, cooling roller and sample were taken into account as a holistic heat system. Based on the heat transfer theory and liquid solidification theory, the heat transfer during the rapids solidification process of CuFe10 ribbons prepared by melt spinning can be approximately modeled by one-dimensional heat conduction equation, so that the temperature distribution and the cooling rate of the ribbon can be determined by the integration of this equation. The simulative results are coincident very well with the microstructure of rapid solidification melt spinnng CuFe10 alloys at three different wheel speeds 4, 12 and 36 m/s.

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14

Zhang, Yin Ling, Ting Ting Jiang, Xiu Li Cai, Wei Min Kang, and Bo Wen Cheng. "Electrospinning Process of Ethylene-co-Vinyl Alcohol Nanofiber with DMAC/IPA Solution System." Advanced Materials Research 1033-1034 (October 2014): 1036–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.1036.

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The nanofibers of EVOH which was dissolved in DMAC/IPA solution system were successfully prepared by eletrospinning. Through designed the electrospinning parameter of EVOH and observed the fiber morphology by the Field Emission Scanning Electronic Microscope(FESEM), we analyzed the influence of different spinning parameters to the fibers. And finally the optimum spinning process of EVOH nanofibers was obtained, which has the spinning concentration of 18wt%, spinning voltage of 29kV and receiving distance of 18cm. The average diameters of the well spun fibers using the solution system were concentrated between 65nm-105nm.

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15

Liu, Li Wei, Wei Min Kang, Bo Wen Cheng, and Ya Liu. "PLA Nanofibers Electrospun from System of Low Toxicity Solvent." Advanced Materials Research 221 (March 2011): 657–61. http://dx.doi.org/10.4028/www.scientific.net/amr.221.657.

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In this paper polylactide (PLA) nanofibers were successfully prepared via electrospinning using low toxic 1,4-dioxane and acetone as co-solvents. The morphology of nanofibers was studied by scanning electron microscopy (SEM) at the different weight ratios of co-solvent, concentrations of spinning solution, electrostatic voltages and collecting distance. Results indicate that the finer and uniform nanofibers were electrospun from the concentration of the spinning solutions at 8 wt.%, 1,4-dioxane and acetone with ratio of 40/60 (w/w), the spinning voltage at 20kV, the collecting distance at 180 mm and the extruding speed at 5 mL/h.

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16

Liu, Xinjin, Hong Zhang, and Xuzhong Su. "Comparative analysis on pneumatic compact spinning systems." International Journal of Clothing Science and Technology 28, no. 4 (August 1, 2016): 400–419. http://dx.doi.org/10.1108/ijcst-09-2015-0104.

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Purpose – Pneumatic compact spinning is the most widely used compact spinning method at present, in which the negative pressure airflow is used to condense the fiber bundle and decrease the spinning triangle. Compact spinning with perforated drum and lattice apron are mainly two kinds of pneumatic compact spinning now. The purpose of this paper is to study the comparative analysis on four kinds of pneumatic compact spinning systems, including two kinds of compact spinning with perforated drum: Rieter’s COM4 and complete condensing spinning (CCS), two kinds of compact spinning with lattice apron: Sussen’s three-line compact spinning (TLCS) and Toyota’s four-line compact spinning (FLCS). Design/methodology/approach – First, the basic properties of four systems were introduced and comparatively analyzed. Then, the 29.2 tex (20S), 14.6 tex (40S), 9.7 tex (60S) and 7.3 tex (80S) combed cotton yarns were spun in the four pneumatic compact spinning systems and ring spinning system, respectively. The evenness, breaking strength and hairiness of spun yarns were tested. Finally, the properties of corresponding woven fabric were tested. Findings – It is shown that comparing to compact spinning with lattice apron, the disposable input cost of compact spinning with perforated drum is higher, but the maintenance cost is lower. Comparing to compact spinning with lattice apron, the evenness of yarn spun by compact spinning with perforated drum is improved whereas the breaking strength is decreased. Furthermore, although harmful long hairiness (=3 mm) of yarn spun by CCS is a little more, the beneficial short hairiness (1-2 mm) is also more, which can make the fabric fullness and have better comfortable feeling. Originality/value – In the paper, comparative analysis on four kinds of pneumatic compact spinning systems, compact spinning with perforated drum: Rieter’s COM4 and CCS, and compact spinning with lattice apron: Sussen’s TLCS and Toyota’s FLCS, were studied. The basic properties, spun yarn qualities and properties of corresponding woven fabric of four systems were analyzed comparatively.

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17

Mizuno, Takashi, K. Takegoshi, and Takehiko Terao. "Switching-angle sample spinning NMR probe with a commercially available 20kHz spinning system." Journal of Magnetic Resonance 171, no. 1 (November 2004): 15–19. http://dx.doi.org/10.1016/j.jmr.2004.07.014.

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18

Gerstein, B. C., Hong‐Jun Pan, and M. Pruski. "Stable system for multiple pulse, magic angle spinning and dynamic angle spinning NMR." Review of Scientific Instruments 61, no. 10 (October 1990): 2699–701. http://dx.doi.org/10.1063/1.1141863.

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19

Ibrahim, S., and Rizk El-Beally. "Spinning Behaviour of Egyptian Cotton/Waste Blends on Open End Spinning System.(Dept.T)." MEJ. Mansoura Engineering Journal 5, no. 1 (July 8, 2021): 42–60. http://dx.doi.org/10.21608/bfemu.2021.182653.

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20

Shi, Da Wei, and Rui Wang. "The Investigate of Spinning Process Module by Textile Collaborative Design System." Key Engineering Materials 584 (September 2013): 307–11. http://dx.doi.org/10.4028/www.scientific.net/kem.584.307.

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This paper was focused on the research of remote spinning process collaborative products development system based on Internet. The research was mainly to establish textile products and process designs, which could lead to the Processing Public Service Platform for the small and medium sized enterprises. The project is supported by the IMAR (Inner Mongolia Autonomous Region) Natural Science Foundation. In this study, the cotton spinning technology is taken as an example emphatically in the thesis. Related processing examples could be inquired by process designers, the process parameters could also be optimized while they select and call the process parameters from related main process of cotton spinning in spinning process parameters calculate system, and then the enterprise coalition cooperated to design product and process by use remote-data interview and synergism.

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21

Lu, Hongshi, Li Aijun, Wang Changqing, and Zabolotnov Michaelovitch Yuriy. "Impact analysis and adaptive sliding mode control for cislunar payload transportation using spinning tether system." Aircraft Engineering and Aerospace Technology 90, no. 8 (November 5, 2018): 1168–79. http://dx.doi.org/10.1108/aeat-02-2017-0067.

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Purpose This paper aims to present the impact analysis of payload rendezvous with tethered satellite system and the design of an adaptive sliding mode controller which can deal with mass parameter uncertainty of targeted payload, so that the proposed cislunar transportation scheme with spinning tether system could be extended to a wider and more practical range. Design/methodology/approach In this work, dynamical model is first derived based on Langrangian equations to describe the motion of a spinning tether system in an arbitrary Keplerian orbit, which takes the mass of spacecraft, tether and payload into account. Orbital design and optimal open-loop control for the payload tossed by the spinning tether system are then presented. The real payload rendezvous impact around docking point is also analyzed. Based on reference acceleration trajectory given by optimal theories, a sliding mode controller with saturation functions is designed in the close-loop control of payload tossing stage under initial disturbance caused by actual rendezvous error. To alleviate the influence of inaccurate/unknown payload mass parameters, the adaptive law is designed and integrated into sliding mode controller. Finally, the performance of the proposed controller is evaluated using simulations. Simulation results validate that proposed controller is found effective in driving the spinning tether system to carry payload into desired cislunar transfer orbit and in dealing with payload mass parameter uncertainty in a relatively large range. Findings The results show that unideal rendezvous manoeuvres have significant impact on in-plane motion of spinning tether system, and the proposed adaptive sliding mode controller with saturation functions not only guarantees the stability but also provides good performance and robustness against the parameter and unstructured uncertainties. Originality/value This work addresses the analysis of actual impact on spinning tether system motion when payload is docking with system within tolerated docking window, rather than at the particular ideal docking point, and the robust tracking control of deep-space payload tossing missions with the spinning tether system using the adaptive sliding mode controller dealing with parameter uncertainties. This combination has not been proposed before for tracking control of multivariable spinning tether systems.

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22

Kronenberger, Katrin, and Fritz Vollrath. "Spiders spinning electrically charged nano-fibres." Biology Letters 11, no. 1 (January 2015): 20140813. http://dx.doi.org/10.1098/rsbl.2014.0813.

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Most spider threads are on the micrometre and sub-micrometre scale. Yet, there are some spiders that spin true nano-scale fibres such as the cribellate orb spider, Uloborus plumipes . Here, we analyse the highly specialized capture silk-spinning system of this spider and compare it with the silk extrusion systems of the more standard spider dragline threads. The cribellar silk extrusion system consists of tiny, morphologically basic glands each terminating through exceptionally long and narrow ducts in uniquely shaped silk outlets. Depending on spider size, hundreds to thousands of these outlet spigots cover the cribellum, a phylogenetically ancient spinning plate. We present details on the unique functional design of the cribellate gland–duct–spigot system and discuss design requirements for its specialist fibrils. The spinning of fibres on the nano-scale seems to have been facilitated by the evolution of a highly specialist way of direct spinning, which differs from the aqua-melt silk extrusion set-up more typical for other spiders.

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Lichota, Piotr, Mariusz Jacewicz, and Joanna Szulczyk. "Spinning gasodynamic projectile system identification experiment design." Aircraft Engineering and Aerospace Technology 92, no. 3 (February 5, 2020): 452–59. http://dx.doi.org/10.1108/aeat-06-2019-0124.

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Purpose The purpose of this paper is to present the methodology that was used to design a system identification experiment of a generic spinning gasodynamic projectile. For this object, because the high-speed spinning motion, it was not possible to excite the aircraft motion along body axes independently. Moreover, it was not possible to apply simultaneous multi-axes excitations because of the short time in which system identification experiments can be performed (multi-step inputs) or because it is not possible to excite the aircraft with a complex input (multi-sine signals) because of the impulse gasodynamic engines (lateral thrusters) usage. Design/methodology/approach A linear projectile model was used to obtain information about identifiability regions of stability and control derivatives. On this basis various sets of lateral thrusters’ launching sequences, imitating continuous multi-step inputs were used to excite the nonlinear projectile model. Subsequently, the nonlinear model for each excitation set was identified from frequency responses, and the results were assessed. For comparison, the same approach was used for the same projectile exited with aerodynamic controls. Findings It was found possible to design launching sequences of lateral thrusters that imitate continuous multi-step input and allow to obtain accurate system identification results in specified frequency range. Practical implications The designed experiment can be used during polygonal shooting to obtain a true projectile aerodynamic model. Originality/value The paper proposes a novel approach to gasodynamic projectiles system identification and can be easily applied for similar cases.

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24

Mobasheri, Mina, Afsaneh Valipouri, and Seyed Abdolkarim Hosseini Ravandi. "Developing porous fibers by electrocentrifuge spinning system." Journal of Applied Polymer Science 136, no. 19 (January 11, 2019): 47513. http://dx.doi.org/10.1002/app.47513.

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Kedzia, J., and B. Willner. "Electrification current in the spinning disk system." IEEE Transactions on Dielectrics and Electrical Insulation 1, no. 1 (1994): 58–62. http://dx.doi.org/10.1109/94.300223.

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Jeon, Gwanggil. "Spinning Image Generation in Polar Coordinate System." International Journal of Multimedia and Ubiquitous Engineering 10, no. 6 (June 30, 2015): 233–42. http://dx.doi.org/10.14257/ijmue.2015.10.6.23.

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Vasconcelos, Rosa Maria. "A Knowledge-Based System for Spinning Management." Textile Research Journal 66, no. 4 (April 1996): 265–68. http://dx.doi.org/10.1177/004051759606600413.

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Yılmaz, Demet, and Mustafa Reşit Usal. "A study on siro-jet spinning system." Fibers and Polymers 13, no. 10 (December 2012): 1359–67. http://dx.doi.org/10.1007/s12221-012-1359-2.

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Hajihashemi, Mahdi, and Ahmad Shirzad. "A generalized model for the classical relativistic spinning particle." International Journal of Modern Physics A 31, no. 07 (March 2, 2016): 1650027. http://dx.doi.org/10.1142/s0217751x16500275.

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Following the Poincaré algebra, in the Hamiltonian approach, for a free spinning particle and using the Casimirs of the algebra, we construct systematically a set of Lagrangians for the relativistic spinning particle which includes the Lagrangian given in the literature. We analyze the dynamics of this generalized system in the Lagrangian formulation and show that the equations of motion support an oscillatory solution corresponding to the spinning nature of the system. Then we analyze the canonical structure of the system and present the correct gauge suitable for the spinning motion of the system.

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Cui, Ning Ning, Zhe Nan Zhang, Wei Liu, Yang Zhang, and Qiang Li. "Probabilistic Spinning Reserve Model of Power System Containing Wind." Applied Mechanics and Materials 799-800 (October 2015): 1238–43. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.1238.

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In order to reflect the influences of the stochastic uncertain of wind power on the optimal decision-making of the power system spinning reserve, a probabilistic optimization model of the spinning reserve is proposed. Considering uncertain factors such as predicted-deviation of wind, predicted-deviation of load and fault outage of generator, the capacity outage probability table is combined with predicted-deviation of wind and predicted-deviation of load. By introducing the analytic expressed probability reserve constraints into the unit commitment model considering the wind power, the spinning reserve of power system can be optimized to the expectable contingency level. Using a calculation example, the effectiveness of the model is proved, providing a new model for uncertainty analysis and optimal scheduling decisions of power system containing wind.

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Zhao, Bo. "Technology and Characteristic of Wool Ring Spun Compound Yarn." Advanced Materials Research 142 (October 2010): 1–5. http://dx.doi.org/10.4028/www.scientific.net/amr.142.1.

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The article introduced the mechanisms and characteristics of spinning system such as solo spinning, sirofil spinning, siro spinning and so on. New composite spinning technology can develop a composite yarn, thread and fabrics with different characteristics. Composite spinning technology is a new breakthrough in technology of ring-spun wool spinning. It makes a remarkable improvement in the quality of spinning. It improves the external quality of yarn. Through comparing and analyzing, the new technologies enable a great structural change and unique performance of the yarn. This new spinning technology has broad prospects for development applications.

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Fei, Wang, Pan Wenxia, and Quan Rui. "Impact of Wind Power Generation on System Operation and Costs." Open Electrical & Electronic Engineering Journal 8, no. 1 (December 31, 2014): 580–88. http://dx.doi.org/10.2174/1874129001408010580.

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In this paper, a deterministic security-constrained unit commitment (SCUC) model is deployed in order to optimize generation output and allocation for spinning reserve considering different wind power dispatch modes. In this model, the scheduling of power plants takes into account a simultaneous clearing of power, reserve capacity requirement and CO2 emission and so on. Spinning reserve is modelled as an exogenous parameter which represents load uncertainty and wind power uncertainty. Special attention in the study is given to determine the impact of different dispatch modes with wind power and different levels of spinning reserve requirement on system operation and costs. The proposed model can be formulated as a mixed-integer problem (MIP) and solved in GAMS by using the CPLEX optimizer. The model is applied to a wind-fired intensive power system for three case studies. The results include the optimal spinning reserve and generator output of each generator, CO2 emission cost and cost of wind power for each case study. The results show that taking wind power as a control option can improves system operation and costs if wind generation and traditional sources generation are coordinated properly.

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Ismoilov, Khusniddin, Sachin Chauhan, Mingxing Yang, and Quan Heng. "Spinning System for Pineapple Leaf Fiber via Cotton Spinning System by Solo and Binary Blending and Identifying Yarn Properties." Journal of Textile Science and Technology 05, no. 04 (2019): 86–91. http://dx.doi.org/10.4236/jtst.2019.54008.

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Dong, Xiao Yu, Hai Bao, Lin Zhao, Lei Liu, and Yong Hua Li. "The Study of Spinning Reserve Allocation Problem in the Wind Power Integrated Power System." Advanced Materials Research 347-353 (October 2011): 2273–76. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.2273.

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With the intermittent and randomness of wind power,the power system needs to arrange certain spinning reserve capacity in response to wind power fluctuations,so the optimal allocation of spinning reserve problem is the key point. This paper first analyzes the potential problems of optimal allocation of spinning reserve by the principle of equal proportion in wind power system; then calculate the optimal power flow which aims to minimize the network loss with the original dual interior point method, of which all thermal power’s active power outputs are optimized objects. You can watch the total network loss and the thermal power’s spinning reserve in the optimal power flow calculation results.Finally the IEEE39 system example and the comparison of two methods demonstrate that the principle of equal proportion exists potential problems and it is necessary to calculate the optimal power flow.

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Shao, Ruiqi, Longdi Cheng, Yanping Yu, Jianxin Xu, and Jianming Wu. "Research on the mechanism of the modified ring-spinning system using a dynamic twist-resistant device and its yarn quality." Textile Research Journal 89, no. 15 (October 31, 2018): 3169–77. http://dx.doi.org/10.1177/0040517518807452.

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The spinning triangle is a critical area in the ring-spinning process; the geometry of the spinning triangle influences the distribution of the fiber tension, and affects the qualities of the spun yarn. In this paper, a kind of dynamic twist-resistant device that can affect the geometry of the spinning triangle is employed for improving the conventional ring-spinning system. The yarn twists between the front roller nip and dynamic twist-resistant device were captured in the spinning process using a high-speed camera. Comparing yarn twists of the two types of yarn, the modified yarns have a lower twist angle, indicating that the device can produce resistant torque. Particle Flow Code software was used to simulate the acts of the device on the yarn, and the results verified the existence of resistant torque. The resistant torque on the yarn affects the geometry of the spinning triangle and the distribution of fiber tension. In addition, 19.4 and 14.5 tex cotton yarns with three different twists, 700, 800 and 900 tpm, were produced by the modified and conventional ring spinning. The comparative study revealed that the modified yarns have a better performance in terms of yarn strength and hairiness, and show no significant difference in terms of the yarn evenness when compared with the conventional yarns at the same twist level. The mechanism of the effect of the dynamic twist-resistant device on yarn qualities is discussed by analyzing the distribution of fiber tension.

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Gong, He, Cai Dong She, Jian Li, and Shi Jun Li. "The Research for Electrostatic Spinning Parameters Control System at High Voltage." Applied Mechanics and Materials 263-266 (December 2012): 776–80. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.776.

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In electrospinning at high voltage, material temperature, the distance between needle and collecting plate and the situation on pushing on material within needle are factors affecting the spinning quality. The paper used the microcontroller as the core, adopted the stepping motor to regulate collecting plate position driving machinery, got feedback by the displacement sensor. During the spinning process, using the infrared temperature probe to measure the needle, meanwhile controlling miniature stepper motor to advance material within needle in constant speed driving piston. The experimental results show that the system has high control accuracy, temperature accuracy can achieve 0.1°C, spinning interval is 1cm and control accuracy is 0.05mm. It provides technical support for a comprehensive, in-depth a electrospinning research.

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HASAN, Shahajada Mahmudul, Takeshi MIZUNO, Masaya TAKASAKI, Yuji ISHINO, Masayuki HARA, and Daisuke YAMAGUCHI. "Design and Fabrication of an Enlarged Wind Tunnel System for Spinning Body Using Magnetic Suspension." Journal of the Japan Society of Applied Electromagnetics and Mechanics 24, no. 3 (2016): 264–70. http://dx.doi.org/10.14243/jsaem.24.264.

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Su, Xuzhong, Xinjin Liu, and Siying Li. "Research on mutual relationships of flange ring and traveler on ring spinning system." International Journal of Clothing Science and Technology 31, no. 1 (March 4, 2019): 32–57. http://dx.doi.org/10.1108/ijcst-04-2018-0050.

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PurposeRing spinning is the most widely used spinning method at present. In the spinning, ring and traveller are the two important components of the twisting process. The properties of ring and traveller have a direct relationship with the yarn qualities and spinning speed. Therefore, the purpose of this paper is to study the mutual relationships of flange ring and traveller system by taking the 6802-type traveller with rectangular structure, BU-type traveller with toxoplasma structure and 772-type traveller with corrugated structure as examples.Design/methodology/approachFirst, the theoretical calculation models of force and inclinations of the traveller are given, and calculation methods of corresponding key parameters referred in the models are presented. Then, by using SolidWorks software, models of the three kinds of traveller straddling on the PG1-4254 type ring are built, and the traveller and ring are simulated by using ADAMS software. By using MATLAB software, the force and inclinations of the traveller during the rotation around ring are simulated. Finally, the spinning experiments are made.FindingsIt is shown that the abrasion of 6802-type traveller is the most serious, and corresponding yarn evenness and hairiness is the worst. The abrasion of BU-type traveller is the slightest, and corresponding yarn evenness is the best. The yarn spins by using 772-type traveller has the least hairiness.Originality/valueIn the paper, the mutual relationships of flange ring and traveller system have been studied. For giving analysis of force and inclinations of the traveller, calculation methods of the key common parameters are presented. By using SolidWorks software, the physical models of the three kinds of traveller straddling on the PG1-4254 type ring are built. And then, the force and inclinations of the traveller during the rotation around ring are simulated by using MATLAB software. At last, the spinning experiments are made to analyse the simulation results.

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Jie Feng, Bin Gang Xu, Xiao Ming Tao, and Tao Hua. "Theoretical Study of a Spinning Triangle with Its Application in a Modified Ring Spinning System." Textile Research Journal 80, no. 14 (March 11, 2010): 1456–64. http://dx.doi.org/10.1177/0040517510361803.

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Ma, Hong Cai, Shi Lin Lu, Long Di Cheng, and Shi Ping Xu. "Mechanism and Confirmation in Compact Spinning with Suction Groove." Advanced Materials Research 468-471 (February 2012): 1962–65. http://dx.doi.org/10.4028/www.scientific.net/amr.468-471.1962.

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Compact spinning eliminated the harmful effects of spinning triangle, as the edge fibers are incorporated into the yarn due to the elimination of the spinning triangle. The compact yarns possess less hairiness, higher breaking strength and breaking elongation compared with the conventional ring-spun yarns. In this article, we study the mechanism of compact spinning with suction groove and analyze the compact action in twisting fiber strip. Some quality parameters of wool compact spinning with suction groove are compared with those of wool conventional ring-spun yarns. The changes of hairiness are analyzed in the different spinning conditions. This provides related data for improving compact spinning system with suction groove.

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Kim, Cheol-Min, Gyeong-Heon Kang, and Eun-Seok Kim. "Active Spinning Training System using Complex Physiological Signals." Journal of the Korea Contents Association 15, no. 7 (July 28, 2015): 591–600. http://dx.doi.org/10.5392/jkca.2015.15.07.591.

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Fröhlke, K., and O. J. Haidn. "Spinning reserve system based on H2/O2 combustion." Energy Conversion and Management 38, no. 10-13 (July 1997): 983–93. http://dx.doi.org/10.1016/s0196-8904(96)00128-8.

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Wright, R. N., G. E. Korth, and C. H. Sellers. "A containerless‐melting twin‐roller melt‐spinning system." Review of Scientific Instruments 61, no. 12 (December 1990): 3924–26. http://dx.doi.org/10.1063/1.1141529.

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KOBAYASHI, Yukinori, Gen YAMADA, and Takafumi Kikuchi. "Vibration Analysis of a Spinning Disk-Spindle System." Proceedings of Conference of Hokkaido Branch 2003.43 (2003): 164–65. http://dx.doi.org/10.1299/jsmehokkaido.2003.43.164.

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Guan, Saipeng, Hai Zhong, Jianping Yang, and Chongwen Yu. "Study on the processing of stretch-broken ramie yarns in a cotton spinning system." Textile Research Journal 87, no. 16 (August 11, 2016): 2018–27. http://dx.doi.org/10.1177/0040517516663153.

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In this study, conventional long ramie fiber was stretch-broken into short fibers with lengths of 30 mm, 35 mm, 40 mm, 45 mm, and 50 mm. Then, these stretch-broken fibers were processed in a cotton spinning system. The results show that, compared to long ramie fibers processed in a conventional ramie spinning system, the stretch-broken fibers, with reasonable fiber length and high length uniformity, can be processed in a cotton spinning system with high efficiency and generally have better resultant yarn quality. For all of the stretch-broken yarns, the yarn processed from fiber with 40 mm length shows the best comprehensive performance.

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Lu, H., Y. M. Zabolotnov, and A. Li. "Application of spinning electrodynamic tether system in changing system orbital parameters." Journal of Physics: Conference Series 1368 (November 2019): 042002. http://dx.doi.org/10.1088/1742-6596/1368/4/042002.

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Cui, Ting, Ding Wang, Zhen Hu, Yangwu Shen, and Hu Guo. "Transient Voltage Stability of UHV DC/AC Hybrid Power Grids with Spinning Reserve." E3S Web of Conferences 185 (2020): 01016. http://dx.doi.org/10.1051/e3sconf/202018501016.

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This paper studies the mechanism of spinning reserve on transient voltage stability in ultra-high voltage (UHV) DC/AC hybrid power grids. Taking an actual received power grid with an UHVDC system as an example, the transient voltage stability is introduced and a certain scale of spinning reserve has to be retained to keep the transient voltage stability of the system. And then, the steady state of synchronous generators with different spinning reserve is studied using the method of phasor diagram analysis. At last, the relation of spinning reserve, excitation voltage, and dynamic reactive power is analyzed and the mechanism of spinning reserve on transient voltage stability is revealed. The actual received power grid is used to demonstrate the validity of the mechanism.

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Wang, Xungai, Menghe Miao, and Yanlai How. "Studies of JetRing Spinning Part I: Reducing Yarn Hairiness with the JetRing." Textile Research Journal 67, no. 4 (April 1997): 253–58. http://dx.doi.org/10.1177/004051759706700403.

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This paper introduces the concept of JetRing spinning, a new spinning technique that incorporates features of both ring and air-jet spinning systems. In JetRing spinning, a single air jet is used below the yarn-forming zone of a conventional ring spinning system; this jet acts in a way similar to the first jet in air-jet spinning. The swirling air currents in the jet wind the protruding fibers around the yarn body, thus reducing yarn hairiness. The air pressure applied to the jet in this study is 0.5 bar, which is much lower than the air pressure used in air-jet spinning. To evaluate the performance of JetRing spinning, ring spun and JetRing spun worsted yarns of 56 tex are tested for hairiness, tensile properties, and yarn evenness. The hairiness results from the Zweigle hairiness meter show that the JetRing spun yarn has much lower numbers of hairs than the ring spun yarn in almost all the hair length groups. The total number of hairs exceeding 3 mm ( i.e., the S3 value) for the JetRing spun yarn is nearly 40% less than that of the ring spun yarn, while both yarn types show little difference in evenness and tensile properties.

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Yalcinkaya, Fatma, Baturalp Yalcinkaya, and Oldrich Jirsak. "Influence of Salts on Electrospinning of Aqueous and Nonaqueous Polymer Solutions." Journal of Nanomaterials 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/134251.

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A roller electrospinning system was used to produce nanofibres by using different solution systems. Although the process of electrospinning has been known for over half a century, knowledge about spinning behaviour is still lacking. In this work, we investigated the effects of salt for two solution systems on spinning performance, fibre diameter, and web structure. Polyurethane (PU) and polyethylene oxide (PEO) were used as polymer, and tetraethylammonium bromide and lithium chloride were used as salt. Both polymer and salt concentrations had a noteworthy influence on the spinning performance, morphology, and diameter of the nanofibres. Results indicated that adding salt increased the spinnability of PU. Salt created complex bonding with dimethylformamide solvent and PU polymer. Salt added to PEO solution decreased the spinning performance of fibres while creating thin nanofibres, as explained by the leaky dielectric model.

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Zhou, Qihong, Tianlun Wei, Yiping Qiu, Fangmin Tang, Lixin Yin, and Xuehui Gan. "Prediction and optimization of chemical fiber spinning tension based on grey system theory." Textile Research Journal 89, no. 15 (October 18, 2018): 3067–79. http://dx.doi.org/10.1177/0040517518807439.

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Based on the grey prediction model, this paper studied the effect of the chemical fiber spinning process parameters on the winding tension. Suitable process parameters were selected to carry out grey incidence analysis with winding tension, and the feasibility of the grey prediction model in spinning tension prediction was validated by the designed experiments. The corresponding algorithm routines of various grey prediction models were written in MATLAB. The single-variable grey prediction model of GM(1,1) showed a higher prediction accuracy in the effect of the single process parameter changing on spinning tension; when multiple process parameters changed at the same time, the average modeling error of the MGM(1, n) multi-variable grey prediction model was 7.70%, and the maximum error was as high as 32.99%. The original MGM(1, n) model was optimized and the model background value was adjusted by using the auto-optimization and weighting method. The average modeling error of the improved model was reduced to 2.02%, which could meet the general accuracy requirement of tension prediction. Further combining fractional-order accumulation and adjusting the background value coefficient α and the cumulative order r jointly, the smallest prediction error was found among the 100,000 combinations, and the final error was further reduced to 1.30%. The results show that the grey prediction model is suitable and effective for predicting the spinning tension based on the process parameters. Appropriate model improvement mechanisms will increase the prediction accuracy significantly. This application provides a suitable method for spinning tension prediction, which has great significance for the tension control of chemical fiber products.

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