A Method of Eliminating Temperature Drift of Cylindrical Shell Gyroscope Using Dual Node Electrodes

A temperature drift, cylindrical shell technology, applied in the direction of speed measurement by gyro effect, gyroscope/steering sensing equipment, speed/acceleration/shock measurement, etc., can solve the problem of increasing cost, low temperature compensation accuracy, and increasing system complexity and other issues to achieve the effect of improving temperature stability and eliminating temperature drift

Active Publication Date: 2017-08-11
NAT UNIV OF DEFENSE TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional method to eliminate the temperature drift of the gyro is to perform temperature compensation on the gyro. Due to the hysteresis effect of temperature measurement, the accuracy of temperature compensation is usually not high, and it increases the complexity of the system and increases the cost.

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
  • A Method of Eliminating Temperature Drift of Cylindrical Shell Gyroscope Using Dual Node Electrodes
  • A Method of Eliminating Temperature Drift of Cylindrical Shell Gyroscope Using Dual Node Electrodes
  • A Method of Eliminating Temperature Drift of Cylindrical Shell Gyroscope Using Dual Node Electrodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] In order to eliminate the temperature drift of the cylindrical shell gyroscope, a method for eliminating the temperature drift of the cylindrical shell gyroscope by using two-node electrodes of the present invention proposes the following Figure 4 The piezoelectric electrode distribution shown. In this embodiment, the distribution form of a piezoelectric electrode for detection is replaced by two electrodes with dislocated nodes; that is, the piezoelectric electrodes (in this example, image 3 The position of the No. 2 piezoelectric electrode in ) is set as two electrodes to form a double-node electrode. The two electrodes are located on both sides of the detection rigid axis, forming a small angle with the detection rigid axis, and the angle between these two electrodes is Δθ.

[0030] see Figure 5 , based on the above-me...

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 method for eliminating temperature drift of a cylindrical shell gyro by utilizing a dual-node electrode. The method comprises the following steps: (1) setting a piezoelectric electrode positioned at a detection node position as two electrodes, and forming the dual-node electrode, wherein the two electrodes are positioned on two sides of a detection rigid shaft and form a small included angle with the detection rigid shaft, and the included angle between the two electrodes is recorded as Delta theta; (2) measuring electrode signals Vds, Vn1 and Vn2 of the gyro in the absence of angular velocity input, and calculating the Delta theta; and (3) calculating the angular velocity, namely performing demodulation and low-pass filtering on the signals of the dual-node electrode, and calculating the angular velocity according to the filtered signals. The method disclosed by the invention has the advantages of simple principle, simplicity in implementation and low implementation cost.

Description

technical field [0001] The invention mainly relates to the field of solid wave gyroscopes, in particular to a method for eliminating the temperature drift of cylindrical shell gyroscopes by using double-node electrodes. Background technique [0002] Cylindrical shell vibrating gyroscopes use the inertial effect of elastic waves in an axisymmetric cylindrical shell to achieve angular velocity measurement. Good vibration, long service life and other advantages, so the development and application prospects are extremely broad. [0003] The working principle of the cylindrical shell vibrating gyroscope is as follows: apply AC voltage to the four piezoelectric excitation electrodes perpendicular to each other on the support beam of the resonator, and the electrodes generated by the inverse piezoelectric effect drive the support beam to vibrate, so that the vibration is transmitted to the resonant ring. inspire as figure 1 The first mode of the harmonic oscillator is shown. Dep...

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 Patents(China)
IPC IPC(8): G01C19/5677
CPCG01C19/5677G01C19/5776
Inventor 吴宇列吴学忠崔红娟肖定邦张勇猛席翔吴小梅
Owner NAT UNIV OF DEFENSE TECH
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