高精度液体注配料控制方法研究  

Research on high accuracy liquid injection control method

作　　者：徐俊杰[1,2,3] 李永国 任锟 王銮[1,2,3] XU Junjie;LI Yongguo;REN Kun;WANG Luan(School of Mechanical Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Province’s Key Laboratory of Reliability Technology for Mechanical and Electrical Product,Hangzhou 310018,China;National and Local Joint Engineering Research Center of Reliability Analysis and Test for Mechanical and Electrical Products,Hangzhou 310018,China;Hangzhou Marco Technology Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]浙江理工大学机械工程学院,杭州310018 [2]浙江省机电产品可靠性技术研究重点实验室,杭州310018 [3]机电产品可靠性分析与测试国家地方联合工程研究中心,杭州310018 [4]杭州玛可罗科技有限公司,杭州310000

出　　处：《包装与食品机械》2024年第2期75-81,87,共8页Packaging and Food Machinery

基　　金：浙江省重点研发计划项目(2021C01143)。

摘　　要：为提高香精研发过程中配方试制精度,保证配方生产一致性,提出一种液体注配料控制方法。设计撞针行程可调节注料阀,通过常开和单点双模式注料以适应配料质量要求。常开模式采用顺馈+模糊PID控制;单点质量模式依据供给压力和撞针行程对单点质量的影响,建立单点质量控制模型。并分别进行仿真验证及模型优化。试验结果表明,当撞针行程和供给压力分别为0.1 mm和0.3 MPa时,单点质量为1.8 mg,配方试制过程中,常开控制偏差在5%以内,注料整体偏差在0.2%以内,重复精度<0.2%,满足实验室配方试制研发需求。研究对保证液体注配料精度具有重要意义。In order to improve the accuracy of formula testing in the flavor development process and ensure consistency in formula production,a method of liquid injection control was proposed.An injection valve with adjustable stroke of needle was designed to adapt to the quality requirements by normally open and sing-point dual-mode injection.The normally open mode adopts feedforward+fuzzy PID control,and for the single-point quality control mode,the single-point quality control model was established according to the influence of supply pressure and needle stroke on the single-point quality.Simulation verification and model optimization were conducted separately.The experimental results show that when the needle stroke is 0.1 mm and the supply pressure is 0.3 MPa,the single-point quality is 1.8 mg,During the formula process,the control deviation under normally open mode is within 5%,the injection control overall deviation is within 0.2%,and the repeatability is less than 0.2%,which meets the research and development requirements for laboratory formula testing.The research results is of great significance to ensure the accuracy of liquid injection.

关 键 词：香精 顺馈控制 模糊PID 单点质量 供给压力 撞针行程 

分 类 号：TH165.1[机械工程—机械制造及自动化] TB486.03[一般工业技术—包装工程]