基于神经网络的精梳毛纺纱线预测

在分析纺纱原理的基础上，采用人工神经网络建立7个不同的模型，预测精梳毛纺的纱线质量和纺纱性能，分别是纱线不匀、粗细节、断裂强力、强力不匀、断裂伸长和断头率。其中断头率由于其复杂的成因，采用了组合神经网络建模。采用工厂实际生产数据进行验证，前6个指标的预测值与实测值之间的相关系数的平方均超过0．9，断头的预测效果相比而言比较差，但相关系数的平方也超过了0．8，表明人工神经网络技术在精梳毛纺纱线预测方面有很大的应用前景。     

纺织品表面纹理的图像分析方法

回顾了用于纺织品表面纹理的图像分析方法,其中着重介绍了纺织品表面纹理特征的描述方法、分析方法和模式分类方法,并以一些常用纺织品为对象,对这些方法的有效性作了比较。     

Fabric Defect Detection Using Adaptive Wavelet Transform

A method of woven fabric defect detection using the wavelet transform adaptive to the fabric has been developed. With reference to the orthogonality constrains of Daubechies wavelet, by taking the minimization of the energy or the gray level of the pixels hi the output sub-images as the additional conditions and using the random algorithm method, two sets of wavelet filters adapted to the fabric texture were formed. The original images of normal fabric texture and the fabric texture with defects were decomposed into horizontal and vertical sub-images by using these filters and the feature indices of these sub-images were also extracted. By comparing the feature indices of the normal texture with that of the defective texture, the fabric defects can be successfully detected and located.     

基于BP神经网络的织物折皱等级评定

采用改进的BP神经网络客观评定织物的折皱等级，网络结构为3层结构，输入样本数据经BP神经网络学习训练后，很快达到较小的误差收敛，从而确保评价的准确性和可靠性。     

黄红麻土工布的开发前景

黄红麻是我国主要纤维作物和经济作物,具有很多优点。世界各国对黄红麻土工布开发利用的范例表明,黄红麻土工布在控制水土流失、防止土壤沙化以及堤坝、高速公路边坡的保护和加固等方面具有其它土工布所不可替代的特殊作用。我国自然资源的人均占有量明显低于世界水平,水土流失、土壤沙化严重,开发利用黄红麻土工布前景广阔,意义重大。     

熔喷双槽形喷嘴气体射流流场研究

从点涡的性质出发,研究了涡偶代替射流的可行性,推导了两射流合成的理论公式,并用实验测定数据验证了该公式的可靠性。该公式预测的纤维直径与经验公式的预测结果几乎完全相同。     

Study on the Improvement in the One Dimensional Mathematical Model of the Air Drag in Melt Blowing Process

The one dimensional mathematical model of the air drag in melt blowing process, which had been put forward by Uyttendaele and Shambaugh is improved. The influence of the density and the specific heat capacity of polymer melt at constant pressure changing with polymer temperature on fiber diameter are studied. The power - law model is introduced as the constitutive equation. The influences of polymer volume flow rate, initial polymer temperature, initial air velocity and initial air temperature on fiber diameter are discussed.     

Image Analysis of Fabric Pilling Based on Light Projection

The objective assessment of fabric pilling based on light projection and image analysis has been exploited recently. The device for capturing the cross-sectional images of the pilled fabrics with light projection is elaborated. The detection of the profile line and integration of the sequential cross-sectional pilled image are discussed. The threshold based on Gaussian model is recommended for pill segmentation. The results show that the installed system is capable of eliminating the interference with pill information from the fabric color and pattern.     

基于二维连续小波变换的织物疵点检测

同正常织物纹理比较,疵点区域由于其纹理不规则及变形而导致不同的局部纹理特征。利用二维连续小波特征,能在时域和频域上对织物图像同时实现任意尺度和旋转角度的变换。通过纹理模型和频谱分析,确定出最优的变换尺度和旋转角度,并由预先确定的全局阈值从小波变换系数的模中进行疵点的分割。实际疵点的检测结果表明该方法是可行的。     

转杯纺纱阻捻器阻捻系数理论分析

通过分析阻捻器阻捻机理，建立了可衡量转杯纺纱阻捻器阻捻效果大小的任意曲面阻捻器阻捻系数的理论模型，并对圆柱面阻捻器阻捻系数进行了数值计算，得出纺纱工艺参数以及安装参数对阻捻系数大小均有一定影响的结论。