To understand the influences of actual sampling conditions on cotton fiber length testing, this article presents a theoretic study on the distributions and fibrogram of the sample taken out by sampler from ideal slive...To understand the influences of actual sampling conditions on cotton fiber length testing, this article presents a theoretic study on the distributions and fibrogram of the sample taken out by sampler from ideal sliver at a certain angle. From the distributions expression it can be found that the size of the sampler and the sampling angle are important factors which affect sampling, but if the sampling width is narrow enough, the influence of the sampling angle on the distributions and fibrogram is small enough to be omitted. This is an important conclusion for sampling, in light of this, some suggestions for designing new type sampler are put forward.展开更多
This paper offers a new method of measuring short fiber content of cotton fibers. The method is composed of two parts: one is Hertel sampling and the other is image testing. With the help of fiber mixer, a thin and ev...This paper offers a new method of measuring short fiber content of cotton fibers. The method is composed of two parts: one is Hertel sampling and the other is image testing. With the help of fiber mixer, a thin and even cotton net is obtained on which we can get Hertel sample by using a sliver clamp. The near micro optical mechanism consists of one large area CCD and one lens with long focus. This mechanism is able to measure every cotton fiber of the test beard accurately and makes it possible to measure accumulating fibers’ amounts. On this base we can calculate short fiber content of cotton, and the experiment results show that this method is efficient.展开更多
双须影像法是一种基于双端随机须丛快速、低成本的测量纤维长度的方法,须丛曲线的测量计算精度是该测量方法的首要保证。为了考查Wu-Wang算法在棉纤维须丛曲线计算中的应用价值,首先考查检测器的线性工作范围、双端影像法所需测量的棉...双须影像法是一种基于双端随机须丛快速、低成本的测量纤维长度的方法,须丛曲线的测量计算精度是该测量方法的首要保证。为了考查Wu-Wang算法在棉纤维须丛曲线计算中的应用价值,首先考查检测器的线性工作范围、双端影像法所需测量的棉须丛个数,而后利用Wu-Wang算法计算须丛透光信号各点对应的纤维面密度,进而计算获取随机须丛的线密度曲线即须丛曲线,再将线密度曲线与AFIS(advanced fiber information system)测量数据换算的须丛曲线进行比较,考查其准确度。结果显示,采用线密度不大于3.45g/m的棉条制作2个双端随机须丛,所测得的平均须丛曲线与AFIS测量数据换算得到的须丛曲线非常一致,从而证明了Wu-Wang算法获取的棉须丛曲线具有很高的准确度。展开更多
文摘To understand the influences of actual sampling conditions on cotton fiber length testing, this article presents a theoretic study on the distributions and fibrogram of the sample taken out by sampler from ideal sliver at a certain angle. From the distributions expression it can be found that the size of the sampler and the sampling angle are important factors which affect sampling, but if the sampling width is narrow enough, the influence of the sampling angle on the distributions and fibrogram is small enough to be omitted. This is an important conclusion for sampling, in light of this, some suggestions for designing new type sampler are put forward.
文摘This paper offers a new method of measuring short fiber content of cotton fibers. The method is composed of two parts: one is Hertel sampling and the other is image testing. With the help of fiber mixer, a thin and even cotton net is obtained on which we can get Hertel sample by using a sliver clamp. The near micro optical mechanism consists of one large area CCD and one lens with long focus. This mechanism is able to measure every cotton fiber of the test beard accurately and makes it possible to measure accumulating fibers’ amounts. On this base we can calculate short fiber content of cotton, and the experiment results show that this method is efficient.
文摘双须影像法是一种基于双端随机须丛快速、低成本的测量纤维长度的方法,须丛曲线的测量计算精度是该测量方法的首要保证。为了考查Wu-Wang算法在棉纤维须丛曲线计算中的应用价值,首先考查检测器的线性工作范围、双端影像法所需测量的棉须丛个数,而后利用Wu-Wang算法计算须丛透光信号各点对应的纤维面密度,进而计算获取随机须丛的线密度曲线即须丛曲线,再将线密度曲线与AFIS(advanced fiber information system)测量数据换算的须丛曲线进行比较,考查其准确度。结果显示,采用线密度不大于3.45g/m的棉条制作2个双端随机须丛,所测得的平均须丛曲线与AFIS测量数据换算得到的须丛曲线非常一致,从而证明了Wu-Wang算法获取的棉须丛曲线具有很高的准确度。
