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Research and Development of Medium High-precision Quantitative Valve for Basis Weight Control of Paper Machine
  
DOI：10.11980/j.issn.0254-508X.2014.03.009
Key Words:high precision quantitative valve  electrical valve  stepping motor  basis weight control of paper machine
Fund Project:国家国际科技合作计划（项目编号：2010DFB43660）；陕西省科技统筹计划（项目编号：2012KTCQ01-19）；西安市未央区科技项目（项目编号：201311）；陕西科技大学校科研基金(项目编号：ZX11-25)；温州市对外科技合作交流科技计划（项目编号：H20100097）。
Author NameAffiliation
王　博1,2 1.陕西科技大学轻工与能源学院， 陕西西安，710021
2.陕西科技大学工业自动化研究所，陕西西安，710021 
汤　伟1,2 1.陕西科技大学轻工与能源学院， 陕西西安，710021
2.陕西科技大学工业自动化研究所，陕西西安，710021 
刘庆立1,2 1.陕西科技大学轻工与能源学院， 陕西西安，710021
2.陕西科技大学工业自动化研究所，陕西西安，710021 
王　樨2 2.陕西科技大学工业自动化研究所，陕西西安，710021 
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Abstract:Aiming at the present status that the high precision valves imported from abroad are expensive, while the domestic products are difficult to meet the control requirements because of the low precision, a design scheme of medium high-precision quantitative valve for basis weight control of paper machine was proposed in this paper. This paper expounded the designs of actuator, controller, mechanical position limitation device, electrical position limits circuit & control bus network. The test result showed that the developed valve reached to a running accuracy of 4000 steps. The product developed has been using in a paper machine in Fuyang City, Zhejiang province and satisfactory control performance and economic benefit are obtained．
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