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Circuit system for bell-shaped vibrator angular rate gyro

An angular rate gyro, bell-shaped oscillator technology, applied in the direction of gyro effect for speed measurement, gyroscope/steering sensing device, speed/acceleration/shock measurement, etc. and other problems, to achieve the effect of simplified structure, high precision and excellent performance

Inactive Publication Date: 2011-02-09
BEIJING INFORMATION SCI & TECH UNIV +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the bell-shaped vibrator angular rate gyro circuit system with complex structure, low measurement accuracy, unsuitability for large-scale production and high price, and propose a simple and feasible bell-shaped vibrator angular rate gyro circuit system

Method used

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  • Circuit system for bell-shaped vibrator angular rate gyro
  • Circuit system for bell-shaped vibrator angular rate gyro
  • Circuit system for bell-shaped vibrator angular rate gyro

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Embodiment Construction

[0020] The circuit system of a bell-shaped vibrator type angular rate gyroscope adopts electrostatic excitation and capacitance detection in the working process. Both excitation and detection electrode pairs are composed of electrodes pasted on the bell-shaped vibrator and base electrodes, and the electrode material is a gold electrode with an insulating substrate. The circuit system includes a mode shape stabilization unit, a drive control unit, an electrode drive unit, a differential capacitance detector and an information detection unit, such as figure 1 shown. Under the action of the drive control unit, the gyro vibrator starts to vibrate, and the vibration shape of the bell-shaped vibrator is stabilized by the mode shape stabilization unit. The differential capacitance detector charges and discharges the electrodes of the bell-shaped oscillator type angular rate gyro oscillator, converts the detected differential capacitance signal into a corresponding error voltage sign...

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Abstract

The invention discloses a circuit system for a bell-shaped vibrator angular rate gyro, which comprises a vibration mode stabilizing unit, a drive control unit, a differential capacitance detector and an information detection unit. Under the drive of a vibration starting circuit, the gyro begins vibrating, and the vibration mode of the bell-shaped vibrator is stable through the vibration mode stabilizing unit and the drive control unit. The differential capacitance detector charges and discharges a detection electrode and a feedback electrode of the vibrator of the bell-shaped vibrator angular rate gyro; the detected differential capacitance signals are converted into corresponding error voltage signals which are then output to a high precision amplifier; and after demodulation, an input angular rate is calculated by a processor. The circuit system has a simple structure, good performance and high precision; and particularly, the vibration mode stabilizing unit is introduced, so the sensitivity of the output signals of the gyro is improved and the defects of the gyro device per se are effectively overcome.

Description

technical field [0001] The invention relates to a circuit system of an angular rate gyroscope, in particular to a circuit system of a bell-shaped vibrator angular rate gyroscope. Background technique [0002] As an inertial device sensitive to the angular motion of the carrier, the gyroscope is the core component of the inertial navigation, guidance and control system. Among them, the vibrating gyroscope represents an important inertial technology and has all the inertial qualities. Vibrating gyroscopes based on the principle of Coriolis force are becoming more and more important in the field of inertial technology, and have been widely valued 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 applicatio...

Claims

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Application Information

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IPC IPC(8): G01C19/5733
Inventor 苏中付梦印李擎邓志红张凤萍刘宁
Owner BEIJING INFORMATION SCI & TECH UNIV
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