Hemispherical resonant gyro fully differential control system and method based on time division multiplexing

A hemispherical resonant gyroscope and control system technology, applied in the field of inertial instrument control, can solve problems such as the decline of gyro accuracy, and achieve the effect of stable control accuracy
CN110865580AActive Publication Date: 2020-03-06TIANJIN NAVIGATION INSTR RES INST
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
TIANJIN NAVIGATION INSTR RES INST
Publication Date
2020-03-06

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Abstract

The invention relates to a hemispherical resonant gyro fully differential control system and control method based on time division multiplexing. The control system comprises an electrode driving detection time division switching module, a sensing signal amplitude-phase demodulation module, an error parameter identification module, a working mode switching module, a control parameter calculation module, a time sequence period calculation module, a mode switching calculation module, a driving signal modulation synthesis module and a measurement output module. The sensing signal amplitude-phase demodulation module and the error parameter identification module form an error signal resolving module. The control parameter calculation module, the time sequence period calculation module and the mode switching calculation module form a data calculation unit. By means of time-sharing switching and two-rotation sensing mode difference of driving detection electrodes, gyro output error terms can be counteracted and inhibited, and the control precision of each control loop and stability of the performance of a hemispherical resonant gyro can be guaranteed.
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Description

technical field

[0001] The invention belongs to the technical field of inertial instrument control, and relates to a hemispherical resonant gyroscope control technology, in particular to a hemispherical resonant gyroscope full differential control system and control method based on time division multiplexing. Background technique

[0002] The hemispherical resonant gyroscope is a solid-wave principle gyroscope with long life, high reliability and high precision, and it has the tendency to replace various optical gyroscopes. France and the United States have applied quartz hemispherical resonant gyroscopes to navigation, aerospace, weapons and other fields. Its core sensitive element, the harmonic oscillator, has non-ideal characteristics such as uneven distribution of mass and stiffness and defects due to factors such as material, processing, and process imperfections; at the same time, the geometric and physical properties of the harmonic oscillator are affected by changes ...

Claims

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