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Micro differential pressure control based valve quick positioning system

A positioning system and micro-differential pressure technology, applied in the field of positioning systems, can solve the problems of low positioning accuracy, susceptibility to interference, and failure to achieve micro-differential pressure control, etc., to improve safety performance, improve control accuracy, and shorten positioning time Effect

Inactive Publication Date: 2014-02-12
SUZHOU FULUOKE FLUID CONTROL TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Since the actual control of the micro-differential pressure valve is subject to the comprehensive influence of various factors such as medium, flow resistance, and pressure, it is difficult to establish a complex mathematical model for the valve positioning system using DSP mode to adapt to the comprehensive external conditions of the valve; the positioning of the device The method adopts the mode of resolver and digital converter, which is susceptible to interference and the positioning accuracy is not high; and it only adopts the micro-step adjustment mode of the valve position, and does not use the pressure difference of the valve as the feedback link, because it cannot achieve The effect of differential pressure control

Method used

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Embodiment Construction

[0016] Embodiments of the present invention will be described below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the invention, and detailed implementation methods and specific processes are given. The structure, location, and connection of each component can be changed. In the technical solution of the present invention Basically, all improvements and equivalent transformations of individual components based on the principles of the present invention should not be excluded from the protection scope of the present invention.

[0017] The structure of the micro differential pressure valve rapid positioning system of the present invention is as follows: figure 1 As shown, it includes: valve chamber 1, valve disc 2, stepper motor 3, sliding table screw mechanism 4, proximity switch 5, motion control and data acquisition card 6, differential pressure sensor 7, software control system 8, measurement and co...

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Abstract

The invention relates to a micro differential pressure control based valve quick positioning system. The system comprises a hardware control system of a micro differential pressure valve and a virtual instrument programming based software control system. The hardware system serves as the carrier and the execution part of virtual instrument software to complete differential pressure transducer data acquisition, stepper motor drive of valve moving and the like. The software system uses a virtual instrument programming mode for achieving differential pressure data acquisition, secondary acquisition processing of differential pressure data signals, loading and real-time calculation of a micro differential pressure quick positioning control model and driving of a stepper motor. By the coordination of the hardware system and the software system, automatic and quick positioning of the micro differential pressure valve is achieved.

Description

technical field [0001] The invention relates to a positioning system in the technical field of valve control, in particular to a rapid valve positioning system based on differential pressure control. Background technique [0002] The micro-differential pressure valve can form a small pressure difference between two spaces or between a space and the outside world, which can achieve the purpose of preventing cross-contamination, so it has been widely used in food manufacturing, medical and health, environmental engineering and other fields. Micro differential pressure control valve is one of the main means to realize micro differential pressure control. At present, the micro-differential pressure control valves that are widely used are mostly controlled by the continuous opening and closing of the valve. Although the control pressure difference can be controlled within a certain range, there are problems such as large pressure fluctuations and too frequent movements of the dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04
CPCF16K31/046
Inventor 胡天群尤云祥马一鸣陈岱晗
Owner SUZHOU FULUOKE FLUID CONTROL TECH
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