摘要
为缩短打叶复烤调试时间,采用逐步回归、偏相关、通径分析和聚类分析法研究了烟叶物理指标与打叶风分工艺参数的关系。结果表明:1物理指标与打叶风分工艺参数间的逐步回归方程达到显著水平。2二润后烟叶温度越高,一打所需打辊转速越大;烟叶含水率越大,四打所需打辊转速越小,三打则越大;烟叶越厚,一打所需打辊转速越大,四打则越小;烟叶越宽,二打所需打辊转速越大;烟叶长度与打辊转速无关。3二润后烟叶含水率越大,各级风分风速越大;烟叶越厚,二打一分风速越大。4根据回归分析得出的物理指标,结合打辊转速和风分风速,通过聚类分析将19个样品中的15个分为4类,每类样品具有相似的打叶工艺参数,其余4个样品的参数各不相同。
To shorten the time needed for setting the threshing system,the relationships between the physical characteristics of tobacco leaves and the technological parameters of threshing and pneumatic separation were investigated with stepwise regression,partial correlation,path analysis and cluster analysis.The results showed that：1）The stepwise regression equation for the physical characteristics and the technological parameters reached a significant level.2）The rotational speed of the first stage threshing drum should be elevated with the increase of leaf temperature leaving the second stage ordering cylinder; the rotational speed of the fourth stage threshing drum should be lowered,while that of the third one should be elevated with the increase of moisture content in leaves; the rotational speed of the first stage threshing drum should be elevated,while that of the fourth one should be lowered with the increase of leaf thickness; the rotational speed of the second stage threshing drum should be elevated with the increase of leaf width; however,leaf length had nothing to do with the drum＇s speed.3）Air velocity in all the pneumatic separators should be set higher with the increase of moisture content in leaves leaving the second stage ordering cylinder; the first stage pneumatic separator downstream the second stage thresher should be set at higher air velocity with the increase of leaf thickness.4） On the basis of physical indexes obtained from stepwise regression and combining with the rotational speed of threshing drum and the air velocity in pneumatic separator,fifteen of nineteen samples were divided into four categories,the leaves in the same category were processed with similar technical parameters; while the other four samples were processed by different parameters.
出处
《烟草科技》
EI
CAS
北大核心
2014年第8期5-9,共5页
Tobacco Science & Technology
基金
安徽省烟草公司资助项目"烟叶物理特性与打叶关系研究"(HHKJXM201106003)的一部分
关键词
烟叶物理指标
打叶风分
逐步回归分析
聚类分析
Physical characteristic
Threshing and pneumatic separation
Stepwise regression analysis
Cluster analysis
