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Method for designing vibrator structure of bell-shaped vibrator type angular rate gyro

A technology of angular rate gyroscope and bell-shaped vibrator, which is applied in the direction of speed measurement, calculation, steering sensing equipment, etc. of the gyro effect, and can solve the high cost of research and development of the bell-shaped vibrator angular rate gyro vibrator and the shortening of the bell-shaped vibrator angular rate gyroscope. Problems such as development time and shortening the design cycle of the bell-shaped vibrator can be achieved to improve the ability and accuracy of verification analysis, optimize the design scheme, and increase the success rate.

Inactive Publication Date: 2011-11-23
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a bell-shaped oscillator-type angular rate gyro oscillator structure design method in order to overcome the shortcomings of the bell-shaped oscillator-type angular rate gyro oscillator designed by empirical judgment and trial and error methods, such as high research and development costs and long development cycles. This method shortens the design cycle of the bell oscillator, thereby shortening the development time of the entire bell-shaped angular rate gyroscope

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  • Method for designing vibrator structure of bell-shaped vibrator type angular rate gyro
  • Method for designing vibrator structure of bell-shaped vibrator type angular rate gyro
  • Method for designing vibrator structure of bell-shaped vibrator type angular rate gyro

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Embodiment Construction

[0034] The principle of the bell-shaped oscillator type angular rate gyro is to use the precession of the mode shape angle caused by the rotation of the resonant bell-shaped oscillator to determine the rotation angle of the gyro base around the inertial space. In order for the bell-shaped vibrator to produce an ideal mode shape with a circular wavenumber n=2, the excitation frequency of the bell-shaped vibrator must be accurately controlled, and this frequency is exactly the natural frequency of the bell-shaped vibrator under this mode shape, so we It is necessary to rationally design the structure of the bell-shaped vibrator so that the obtained bell-shaped vibrator can produce an ideal mode shape.

[0035] According to the vibration theory, the natural frequency and mode shape of the bell-shaped vibrator are only related to the stiffness characteristics and mass distribution of the bell-shaped vibrator. Therefore, the natural frequency and mode shape of the bell-shaped vibrat...

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Abstract

The invention belongs to the technical field of angular rate gyros and aims at overcoming the defects that a vibrator of a bell-shaped vibrator type angular rate gyro which is designed through an experience judgment method and a cut-and-try procedure has high researching and developing cost, a long development cycle and the like. A method for designing the vibrator structure of the bell-shaped vibrator type angular rate gyro comprises the following steps of: (1) carrying out finite element modeling on a structure of a bell-shaped vibrator; (2) researching vibration characteristics of the bell-shaped vibrator through a finite element method and analyzing natural vibration frequency and related vibration modes of the bell-shaped vibrator; (3) summarizing a rule showing that the structural parameters of the bell-shaped vibrator influence on frequency of the bell-shaped vibrator; and (4) choosing an optimal result and providing reasonable structural parameters for the bell-shaped vibrator. According to the invention, the finite element analyzing method is adopted to replace the traditional experience judgment and cut-and-try procedure, and the capability and the accuracy for check analysis are enhanced and the design cycle for the bell-shaped vibrator is greatly shortened, therefore the time for developing the whole bell-shaped vibrator type angular rate gyro is shortened and a basis for a reasonable design of the bell-shaped vibrator type angular rate gyro is provided.

Description

technical field [0001] The invention belongs to the technical field of angular rate gyroscopes, and in particular relates to a vibrator structure design method of a bell-shaped oscillator type angular rate gyroscope. Background technique [0002] As an inertial device that is sensitive to the angular motion of the carrier, the gyroscope is the core component of inertial navigation and guidance. The vibration gyroscope based on the principle of Coriolis force has all the inertial qualities, and its status in the field of inertial technology is becoming more and more important. It has been widely concerned as a new generation of inertial instruments. Driven by the development of science and technology and market demand, various vibrating gyroscopes have emerged one after another. [0003] The application number is: 201010215745.1, and the name of the invention is: Bell-shaped oscillator-type angular rate gyroscope. The patent application provides a bell-shaped oscillator-type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01C19/56G01P9/04
Inventor 苏中李擎范军芳刘宁刘洪
Owner BEIJING INFORMATION SCI & TECH UNIV
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