Bell-shaped oscillator type angular-seed gyroscope harmonic oscillator frequency cracking restraining method

A technology of angular rate gyro and bell-shaped vibrator, which is applied in the direction of steering induction equipment, etc., can solve the problems that the bell-shaped vibrator does not have the gyro effect, frequency cracking, and affects the performance of the bell-shaped vibrator, so as to shorten the development cycle and reduce the frequency cracking , Improve the effect of verification analysis ability and accuracy

Active Publication Date: 2013-11-13
BEIJING INFORMATION SCI & TECH UNIV +1
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AI Technical Summary

Problems solved by technology

At present, the designed bell-shaped vibrator has frequency cracking due to material density, Young's modulus, processing accuracy and other reasons.
The value of frequency cracking will directly affect the performance of the bell-shaped vibrator. If the value is too large, the bell-shaped vibrator will not have the gyroscopic effect.

Method used

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  • Bell-shaped oscillator type angular-seed gyroscope harmonic oscillator frequency cracking restraining method
  • Bell-shaped oscillator type angular-seed gyroscope harmonic oscillator frequency cracking restraining method
  • Bell-shaped oscillator type angular-seed gyroscope harmonic oscillator frequency cracking restraining method

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Embodiment Construction

[0024] The principle of the bell-shaped vibrator angular rate gyroscope is to use the precession of the mode angle caused by the rotation of the resonant bell-shaped vibrator to determine the rotation angle of the gyro base around the inertial space. According to the operating principle and vibration theory of the bell-shaped vibrator angular rate gyroscope, the normal operation of the bell-shaped vibrator needs to maintain the stability of the vibration amplitude and frequency, and at the same time, it is necessary to effectively suppress the errors generated by the bell-shaped vibrator. In order to make the bell-shaped vibrator produce the toroidal wave number n=2 It is necessary to accurately control the vibration frequency and vibration mode of the bell-shaped vibrator, and maintain the normal operation of the vibrator with angular rate input, provide control torque, and calculate the input angular rate. Therefore, we need to reasonably design the control loop of the bell-sh...

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Abstract

The invention discloses a bell-shaped oscillator type angular-seed gyroscope harmonic oscillator frequency cracking restraining method. The method comprises the followings: (1), measuring the actual oscillating mode of a well processed bell-shaped oscillator; (2), measuring the actual frequency cracking value of the processed bell-shaped oscillator; (3), building a finite element model and emulating bell-shaped oscillator frequency cracking; and (4), carrying out simulation experiment and determining grooving direction and grooving depth. By adopting the method, the frequency cracking of the bell-shaped oscillator can be effectively restrained, the overall performance of the bell-shaped oscillator is improved, and the design cycle of the bell-shaped oscillator is shortened greatly, therefore, the time for developing the overall bell-shaped oscillator type angular-seed gyroscope is shortened, and basis is provided for reasonable design of the bell-shaped oscillator type angular-seed gyroscope.

Description

Technical field [0001] The invention belongs to the technical field of angular rate gyroscopes, and particularly relates to a method for suppressing frequency splitting of a bell-shaped vibrator type angular rate gyroscope harmonic oscillator. Background technique [0002] As an inertial device sensitive to the angular motion of the carrier, the gyro is the core component of inertial navigation and guidance. The vibrating gyroscope based on the principle of Coriolis force has all the inertial qualities, and its position in the field of inertial technology is becoming more and more important. It has been regarded as a new generation of inertial instruments and has received extensive attention. Driven by the development of science and technology and market demand, various vibrating tops have appeared one after another. [0003] The patent number is: ZL201010215745.1, and the patent application named "bell-shaped vibrator angular rate gyroscope" provides a bell-shaped vibrator angula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/56
Inventor 刘洪李擎付梦印苏中邓志红刘宁
Owner BEIJING INFORMATION SCI & TECH UNIV
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