Proportional valve pair accurate atmosphere controller

A technology of air pressure control and valve, applied in the direction of electric fluid pressure control, internal feedback device, electric controller, etc., to achieve the effect of rapid pressure control process

Inactive Publication Date: 2008-09-03
周德海 +2
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing air pressure detection and control devices, the present invention proposes a proportional valve to a precision air pressure control device
The device solves technic

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Proportional valve pair accurate atmosphere controller
  • Proportional valve pair accurate atmosphere controller
  • Proportional valve pair accurate atmosphere controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Describe in detail with the accompanying drawings

[0031] The device of the invention is composed of double sensors, a proportional valve pair, a constant current source, a sensor conditioning circuit, a practical differential circuit, a PID control circuit, a high-resolution DA converter, a proportional valve drive circuit and a serial interface connected to each other.

[0032] The device of the present invention adopts a high-stable, high-precision analog control circuit and a high-density PID controller, and is based on a high-stable air pressure control technology structure based on a digital quartz resonance ordinary silicon piezoresistive dual pressure sensor and an analog circuit, and can realize a pressure signal of 0-1500kPa Automatically generated control, the control precision is better than 0.1% F.S, and the control stability is better than 0.002% F.S.

[0033] a. Dual sensors

[0034] according to figure 1As shown, the computer 1 is connected to the com...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a device for generating and controlling standard pressure signals, which is applied to the fields of aviation, aerospace and pressure metering calibration, to be specific, the invention provides a precise pressure control device based on a pair of proportional valves. The device is composed of double sensors, a pair of proportional valves, a constant flow source, a sensor conditioning circuit, a practical differential circuit, a PID control circuit, a high resolution DA converter, a proportional valve driving circuit and serial interfaces. By the device, a pressure can be controlled to a scope ranging from 0 to 1500KPa, the indefinite degree is 0.01% F.S, the control stability is better than 0.002%F.S, and the pressure control process is fast and stable. The device is suitable for pressure control and detection under various environmental conditions.

Description

technical field [0001] The present invention proposes a device for generating and controlling standard air pressure signals used in the fields of aviation, aerospace, and air pressure measurement and calibration, specifically a proportional valve pair precision air pressure control device. Background technique [0002] With the development of modern science and technology, pressure measurement and testing technology has developed rapidly, not only reflected in the accuracy of pressure measurement, the range of measurement, etc., but also developed from the measurement test and calibration of static pressure in the past to dynamic pressure. The metrological testing and calibration of the measurement system have not only been developed in practice, but also gradually improved in theory. Precise control components, high-precision digital pressure measurement technology, pressure control technology, play an important role in pressure measurement and automatic control, and the co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05D16/20G05B6/02G05B11/42
Inventor 周德海崔保健侯兴勃
Owner 周德海
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap