高速磁悬浮织针阵列中的多物理场动态耦合机理研究与织针结构优化

Based on the drive mechanism of single-needle suspension, this project has conducted a research the dynamic coupling of electromagnetic field of multiple suspended needles in a narrow space (space between needles is 0.5-1.0mm), including thermal coupling between inertia force, yarn tension, friction force and thermal deformation, to figure out the structure stability of the magnetic needle array and its dynamic stability when working under different cooperated operation modes. The multi-physics dynamic coupling mechanism, which has determined the needle structure of multi-needle suspension, stability of needle-selection and indicators of dynamic performance, is a critical basic theory to take the drive mechanism of needle magnetic suspension into application. Through the in-depth theoretical analysis and prototype tests to circular knitting machine with multi-needle suspension system, the research is to seek the correlation between the indicative requirements of high-performance needle magnetic suspension and the structure of knitting needles and drive parameters, and conduct optimized design for the structure of needle array of magnetic suspension and of its guide support. This multi-physis dynamic coupling mechanism will provide a theory basis for magnetic suspended knitting equipment into the high-speed,precision,high efficiency application stage. And this needle structure optimization will provide a technology basis for magnetic suspended knitting principle into practical application stage.This research conforms to the demands in Twelfth Five-Year Plan's Outline for Scientific Progress in Textile Industry for speeding up the research of basic theory and frontier technology in key areas, and independent innovation of high-end knitting machinery of new textile equipment; it also conforms to the demands in National Twelfth Five-Year Plan for strengthening independent innovation of key parts, basic theory and technical application of new high-end textile equipment.

本项目在单磁悬浮驱动织针机理研究基础上，为满足针织装备中数千枚织针的编织工艺要求，深入研究在狭小空间内(织针间距0.5～1.0mm)磁悬浮织针阵列中的多物理场动态耦合机理问题。重点研究织针阵列内的电磁场动态耦合问题，织针的惯性力、纱线拉力、摩擦力、热变形等热力耦合问题，织针阵列结构稳定性与运动稳定性问题。通过理论分析和磁悬浮针织样机试验，探索磁悬浮织针阵列的高性能技术指标要求与织针结构、驱动参数之间的关系，建立磁悬浮织针阵列结构的优化模型，确定织针及其支撑结构参数。该耦合机理为磁悬浮织针原理进入高速、精密、高效驱动的应用阶段提供关键理论基础；织针结构优化为磁悬浮织针原理实用化提供关键技术基础。本项目符合《纺织工业"十二五"科技进步纲要》加快新型纺织装备重点领域的基础理论、前沿技术研究及高档针织机械的自主创新的要求；符合《国家"十二五"规划纲要》加强高端新型纺织装备关键部件自主化的要求。

本项目在单磁悬浮驱动织针机理研究基础上，为满足针织装备中数千枚织针的编织工艺要求，深入研究在狭小空间内(织针间距0.5～1.0mm)磁悬浮织针阵列中的多物理场动态耦合机理问题。重点研究织针阵列内的电磁场动态耦合问题，织针的惯性力、纱线拉力、摩擦力、热变形等热力耦合问题，织针阵列结构稳定性与运动稳定性问题。通过理论分析和磁悬浮针织样机试验，探索磁悬浮织针阵列的高性能技术指标要求与织针结构、驱动参数之间的关系，建立磁悬浮织针阵列结构的优化模型，确定织针及其支撑结构参数。该耦合机理为磁悬浮织针原理进入高速、精密、高效驱动的应用阶段提供关键理论基础；织针结构优化为磁悬浮织针原理实用化提供关键技术基础。本研究将有效地满足《纺织工业"十二五"发展纲要》中提出的，加快新型纺织机械制造等重点领域的基础理论和前沿技术研究，大力推进电脑圆纬机、多功能横机等新型纺织装备国产化的进程。该项目符合《国家"十二五"科学技术发展规划》中提出加强关键基础件及通用部件研究的要求。