Resonant-type micro-mechanical optic fiber gyroscope

A mechanical gyro and resonance technology, which is applied in the direction of speed measurement, gyroscope/steering sensing equipment, and measuring devices, etc., can solve the problems of micro-mechanical gyro sensitivity and insufficient resolution, and achieve easy digital signal processing and improve sensitivity. , the effect of avoiding the influence of noise interference
CN1865851AInactive Publication Date: 2006-11-22BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2006-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The disclosed resonance-form micro-mechanical gyro comprises: a comb-like crossed driver, a plate mass block, a lever-form amplifier, and a dual-end fork resonator. Wherein, forcing voltage on the driver, the mass block oscillates along x-axis and generates Coriolis force forced by external z-axis rotation; after amplifying by the lever, the Coriolis force acts on the resonator to regulate the motion periodically; it obtains the input angular frequency by measuring the difference output of the resonator. This invention improves sensitivity, resolution, and dynamic range, and convenient to digital process.
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Description

technical field

[0001] The invention relates to a resonant micro-mechanical gyroscope, which belongs to the field of micro-mechanical sensors in micro-electro-mechanical systems (MEMS), and is widely used as a micro-inertial device in the fields of automotive electronics, aerospace, weaponry and the like. Background technique

[0002] The classic frame-type mechanical rotor gyroscope based on the principle of angular momentum is assembled from hundreds of (about 300) parts. It has a complex structure, large volume, and short service life, which cannot meet the requirements of technological development and many new applications. Therefore, solid-state gyroscopes without mechanical rotors have been developed one after another, such as laser gyroscopes, hemispherical resonant gyroscopes, and fiber optic gyroscopes. The performance of the first two gyroscopes can reach the drift accuracy of inertial navigation (0.01° / h); but the price is high and the volume is large, which is st...

Claims

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