基于PLC和步进伺服的茶叶揉捻压力柔性控制方法
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摘要
针对传统茶叶揉捻机在工作过程中不能进行实时测压、控压,不能将茶叶受到的压力量化,并且茶叶在揉捻翻转过程中所受到的压力变化较大,影响茶叶揉捻质量的这一现状,提出一种基于PLC和步进伺服的揉捻机压力柔性控制方法。该控制方法模拟弹簧受力时的弹性力变化过程,将压力参数量化,便于实时调控。实验表明:该控制技术能让杀青叶在揉捻工序中达到成条率高、细胞破碎率高、碎茶率低的揉捻效果。
In view of that the traditional tea twisting machine cannot measure and control the pressure in real-time in the working process, and the pressure of tea cannot be expressed quantitatively and varies in a wide range in the turning process. This situation influences leaves quality heavily. The authors put forward a kind of tea twisting machine pressure flexible control method based on PLC and step servo. The control method simulates the elasticity change process during the spring is loading. It quantizes the pressure parameters to facilitate regulation in real-time. The experimental results show the control technology makes the tea leaves break cells and be made into strips at a high rate and reduces the tea broken.
In view of that the traditional tea twisting machine cannot measure and control the pressure in real-time in the working process, and the pressure of tea cannot be expressed quantitatively and varies in a wide range in the turning process. This situation influences leaves quality heavily. The authors put forward a kind of tea twisting machine pressure flexible control method based on PLC and step servo. The control method simulates the elasticity change process during the spring is loading. It quantizes the pressure parameters to facilitate regulation in real-time. The experimental results show the control technology makes the tea leaves break cells and be made into strips at a high rate and reduces the tea broken.
引文
[1]肖宏儒.绿茶加工设备的发展趋势[J].中国茶叶,2006(3):40-44.
[2]周仁贵,孙承业.茶叶揉捻自动化的关键技术[J].中国茶叶,2008(5):13-15.
[3]张哲,牛智有.揉捻过程中茶叶物理特性的变化规律[J].湖北农业科学,2012(7):2767-2770.
[4]钱天寿,康孟利,凌建刚,等.茶叶加工中揉捻技术的研究进展[J].农产品加工,2008(8):48-50.
[5]权启爱.茶叶加工技术与设备[M].浙江摄影出版社,2005:33-34.
[6]刘唐发.试论绿茶初制揉捻工艺加压技术[J].广西热作科技,1997(4):63-65.
[7]赵春芳.基于PLC的茶叶揉捻机自动控制系统[J].机械工程师,2010(7):108-110.
[8]金雯丽,喻莉莉,宋健.PLC的脉冲输出控制步进电机的实用方法[J].机电工程技术,2006(8):54-55.
[9]赵春芳,金华强.基于PLC的步进电机控制在茶叶揉捻机中的应用[J].江西电力职业技术学院学报,2009(3):39-41.
[10]韩志强,刘晓婷.步进电机PLC控制的研究设计[J].轻工机械,2006(4):114-115.
[11]杨远庆,尹杰.茶叶揉捻的数学模型[J].茶叶科学,2003(6):38-40.
[2]周仁贵,孙承业.茶叶揉捻自动化的关键技术[J].中国茶叶,2008(5):13-15.
[3]张哲,牛智有.揉捻过程中茶叶物理特性的变化规律[J].湖北农业科学,2012(7):2767-2770.
[4]钱天寿,康孟利,凌建刚,等.茶叶加工中揉捻技术的研究进展[J].农产品加工,2008(8):48-50.
[5]权启爱.茶叶加工技术与设备[M].浙江摄影出版社,2005:33-34.
[6]刘唐发.试论绿茶初制揉捻工艺加压技术[J].广西热作科技,1997(4):63-65.
[7]赵春芳.基于PLC的茶叶揉捻机自动控制系统[J].机械工程师,2010(7):108-110.
[8]金雯丽,喻莉莉,宋健.PLC的脉冲输出控制步进电机的实用方法[J].机电工程技术,2006(8):54-55.
[9]赵春芳,金华强.基于PLC的步进电机控制在茶叶揉捻机中的应用[J].江西电力职业技术学院学报,2009(3):39-41.
[10]韩志强,刘晓婷.步进电机PLC控制的研究设计[J].轻工机械,2006(4):114-115.
[11]杨远庆,尹杰.茶叶揉捻的数学模型[J].茶叶科学,2003(6):38-40.