Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method

A technology of error suppression and time-division driving, which is applied in the direction of gyro effect for speed measurement, gyro/steering sensing equipment, measuring devices, etc., to achieve the effect of eliminating gyro zero drift, simple engineering implementation, and eliminating DC offset

Pending Publication Date: 2021-11-05
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problem that the existing quartz gyroscope cannot effectively reduce electrostatic coupling and orthogonal coupling so that the quartz tuning fork gyroscope produces zero error, and proposes a quartz gyroscope error suppression with time-division drive and orthogonal force feedback closed-loop method

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
  • Time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method
  • Time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method
  • Time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment elaborates in detail the implementation of a time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method in specific products according to the present invention. The method includes 1) driving the software unit and the driving module to output a time-divided sinusoidal driving excitation signal, and alternately outputting a sinusoidal driving excitation signal and a zero-level signal in adjacent time periods; 2) when the driving excitation signal is in a period of no signal During the period, the detection module starts to detect the signal, and obtains the in-phase component and quadrature component of the detection signal; 3) establishes the PI closed-loop control of the in-phase and quadrature signals, generates the in-phase and quadrature force feedback closed-loop signals respectively, and then generates the force through digital-to-analog conversion Feedback closed-loop signal; 4) load the force feedback...

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 relates to a time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method and belongs to the technical field of micromechanical inertial devices. The method comprises the following steps that 1) a drive software unit and a drive module output time-division sine drive excitation signals, and alternately output the sine drive excitation signals and zero level signals in adjacent time periods; 2) when the driving excitation signal is in a signal-free period, a detection module starts to perform signal detection to obtain an in-phase component and an orthogonal component of a detection signal; (3) in-phase and orthogonal signal PI closed-loop control is established, in-phase and orthogonal force feedback closed-loop signals are generated respectively, and force feedback closed-loop signals are generated through digital-to-analog conversion; and 4) a force feedback signal is loaded to a detection end of a quartz tuning fork for force feedback closed-loop control so that displacement of the detection end of the quartz tuning fork is zero. According to the method, an electrostatic coupling error and a mechanical coupling error of the gyroscope are suppressed, the zero drift of the gyroscope is effectively improved, and the circuit is easy to implement.

Description

technical field [0001] The invention relates to a time-division driving and orthogonal force feedback closed-loop quartz gyroscope error suppression method, which belongs to the technical field of micromechanical inertial devices. Background technique [0002] A gyroscope is an inertial sensitive device used to measure the rotational angular velocity of an object relative to inertial space. Due to its small size, light weight, low power consumption, low cost, and easy mass production, the micromechanical gyroscope is an important development direction in the gyroscope field and has received extensive attention. [0003] Quartz tuning fork gyroscope is a typical representative of micromechanical gyroscope. Its working principle is the piezoelectric / inverse piezoelectric effect and Coriolis effect of quartz crystal, including driving and detecting two pairs of tuning forks. Driving electrodes are designed and manufactured on the driving tuning fork, and testing tuning fork Th...

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): G01C19/5607G01C19/5614G01C19/5656
CPCG01C19/5614
Inventor 冯立辉杜乐郭军强崔建民卢继华
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com