Track valve position measuring system and method based on Kalman filter

A Kalman filter and measurement method technology, applied in valve devices, complex mathematical operations, engine components, etc., can solve problems such as random interference of gyroscopes, counting errors of Hall sensors, and achieve low cost, high precision, and noise suppression. the effect of interference

Active Publication Date: 2019-12-13
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the rotation of the valve, it is difficult to avoid vibration interference perpendicular to the rotation plane, resulting in counting errors of the Hall sensor
Gyroscopes have various errors such as temperature drift, time drift, and random interference, making it difficult to be used in rotation measurement systems alone

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
  • Track valve position measuring system and method based on Kalman filter
  • Track valve position measuring system and method based on Kalman filter
  • Track valve position measuring system and method based on Kalman filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] Example: Orbital Valve Position Measurement Scheme Based on Kalman Filter Algorithm

[0096] Step 1: The data collector collects the output data of the gyroscope and Hall sensor

[0097] The STM32 standard data collector can be used to automatically identify the limit rotation angle of the valve and the current angle, without the need for humans to grant the limit angle. The STM32 data collector quickly collects the output data of the three-axis gyroscope and the Hall sensor with a sampling frequency of 1kHZ; at the same time, in the sampling interval, it processes the rotation angle data and updates the valve limit rotation angle with a frequency of 100HZ. in,

[0098] Gyro output signal y g,t Contains the true angular velocity ω t , zero bias ε g,t and Gaussian white noise ν g,t , as shown in the following formula: y g,t = ω t +ε g,t +ν g,t

[0099] After the quaternion solution process, the gyroscope zero bias ε g, t is the main error source that causes th...

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 discloses a track valve position measuring system and method based on a Kalman filter. The system comprises a gyroscope and a Hall sensor which are both arranged on a track valve; the system further comprises a controller, wherein the controller is connected with the gyroscope and the Hall sensor through a data collector; the data collector acquires measurement data of the gyroscopeand the Hall sensor, and the controller constructs the Kalman filter and controls the data collector to perform measurement updating on the measurement data of the gyroscope so as to obtain an updatedone-step prediction first state vector and an updated one-step prediction system covariance; a gain matrix of the updated Kalman filter is obtained according to the prediction system covariance; anda current first state vector and a current system covariance are updated according to the gain matrix. According to the track valve position measuring system and method based on the Kalman filter, thedata of the Hall sensor and the gyroscope are fused, so that the problem of poor measurement precision through using a single sensor can be solved.

Description

technical field [0001] The present application relates to valve position detection technology in the field of valves, in particular to a Kalman filter-based orbital valve position measurement system and method. Background technique [0002] As a ball valve with single seat and two-way sealing, orbit valve combines the advantages of gate valve, ball valve, globe valve and plug valve, and is widely used in gas pipelines. Orbit valves are usually configured with feedback valve position feedback. The feedback device cooperates with the on-site PLC (programmable logic circuit) system to realize the remote feedback of the valve switch state, and provides the corresponding valve position signal output for the monitoring system that manages the valve. However, limited by the structure of the existing orbital valve, the integrated feedback device is mainly used for on-site operators to observe, and the sampling accuracy directly combined with the PLC system is limited, and the cable...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00G06F17/13G06F17/16
CPCF16K37/0083G06F17/13G06F17/16
Inventor 王悦倪娜杨帆刘伟甄玉龙王旭陈涛马玉林张亮
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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