Hemispherical resonator gyro high-reliability oscillation starting system and method
A technology of hemispherical resonant gyroscope and hemispherical resonator, which is applied in the direction of gyroscopic effect for speed measurement, gyroscope/steering sensing equipment, measuring device, etc., which can solve the problem that the frequency of excitation signal and the resonant frequency of the resonator are offset, and the gyroscope cannot quickly enter into stability. Problems such as working status and gyro failure
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[0057] Example
[0058] Such as figure 1 As shown, a high-reliability vibration starting system for a hemispherical resonant gyroscope includes a hemispherical resonator, a resonance signal detection electrode, and an excitation electrode;
[0059] The system includes: zero-crossing signal detection module, sweep frequency start-up module, start-up detection module, frequency selection module, digital frequency synthesis DDS module, phase-locked loop DPLL, DA control module, digital-to-analog conversion module and high-voltage drive module.
[0060] Such as figure 2 As shown, a high-reliability start-up method for a hemispherical resonator gyroscope includes the following steps:
[0061] (1) The resonant signal detection electrode detects the resonant motion of the hemispherical resonator and obtains an AC voltage signal, such as image 3 Shown in (a);
[0062] (2) The zero-crossing signal detection module performs a zero-crossing comparison on the AC voltage signal to obtain a square...
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