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valve positioner
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  valve positioner
Valve positioner a device that adjusts the instrument air pressure to a control valve to maintain a specified value for the stem position.
      
The As2 flux was adjusted with the aid of an automated valve positioner which allowed rapid flux change.
      


The primary control scheme and its deficiencies of on off control valve are introduced.The control air passage is improved.Realizing two functions of satisfying flow control and quick control by increasing a few control devices such as solenoid valve,pneumatic valve and electropneumatic valve positioner,etc.

介绍两位式控制阀原有的控制方案及不足之处 ,针对其控制气路进行了改造 ,通过增加少量的控制器件 (电磁阀、气动阀、电气阀门定位器 ) ,实现了满足流量调节和快速控制两种功能

The paper simply introduces the basic principle and function of the positioner,explains a means by the intellective electropneumatic valve positioner to change the static characteristic of control valve.

本文简单介绍了定位器的基本原理及主要作用 ,详细说明了一种如何通过改变智能型阀门定位器的性能特性来改变调节阀静态特性的方法。

Intelligent electro-pneumatic valve positioner based on two-wire system is one of main developing trend of valve positioners.This paper describes in detail the software and hardware designs of the intelligent valve positioner using MSP430 single chip computer,gives the realizing communication method based on HART protocol,and proposes the software and hardware technical strateges for low power consumption design of two-wire valve positioner.The practical application shows that the main technical...

Intelligent electro-pneumatic valve positioner based on two-wire system is one of main developing trend of valve positioners.This paper describes in detail the software and hardware designs of the intelligent valve positioner using MSP430 single chip computer,gives the realizing communication method based on HART protocol,and proposes the software and hardware technical strateges for low power consumption design of two-wire valve positioner.The practical application shows that the main technical characteristics are obviously superior to traditional valve positioners.

二线制智能电气阀门定位器是阀门定位器的主流发展方向。本文详细阐述了基于MSP430单片机的智能阀门定位器软硬件设计,给出了HART协议通讯的实现方法,提出了阀门定位器低功耗设计中应采取的软硬件技术措施。实际应用表明,该定位器的主要技术性能明显优于传统的阀门定位器。

 
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