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High-precision MEMS gyroscope device and inertial navigation device

An inertial navigation, high-precision technology, applied in the field of inertial navigation and positioning, can solve the problems of unstable zero-drift point, low accuracy, and inability to meet high-precision systems, and achieve the effect of suppressing zero-point drift and improving accuracy

Inactive Publication Date: 2015-01-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, MEMS gyroscopes in the domestic market generally have shortcomings such as low precision and high noise, which cannot meet the needs of high-precision systems. The stability of the zero drift point of the instrument

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  • High-precision MEMS gyroscope device and inertial navigation device
  • High-precision MEMS gyroscope device and inertial navigation device
  • High-precision MEMS gyroscope device and inertial navigation device

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Embodiment Construction

[0022] The present invention will be further described in detail below in combination with specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0023] see figure 1 , the high-precision MEMS gyroscope device of the present invention includes a MEMS gyroscope for obtaining an angular velocity signal of an inertial navigation device; a high-precision A / D module for real-time sampling of an output signal of the MEMS gyroscope; a processor platform, It is used to process the signal sampled and output by the high-precision A / D module by using a Kalman filter algorithm to obtain angle information and output it. The present invention performs Kalman filter calculation processing on the output data of the gyroscope, which can effectively suppress th...

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Abstract

The invention discloses a high-precision MEMS gyroscope device and an inertial navigation device. The high-precision MEMS gyroscope device comprises an MEMS gyroscope, a high-precision A / D module and a processor platform, wherein the MEMS gyroscope is used for acquiring an angle speed signal of the inertial navigation device; the high-precision A / D module is used for sampling an output signal of the MEMS gyroscope in real time; the processor platform is used for processing the sampling output signal of the high-precision A / D module by using a kalman filtering algorithm, so as to obtain and output angle information. The invention further discloses the inertial navigation device. Through the adoption of the high-precision MEMS gyroscope device, the precision of output angle information of the MEMS gyroscope is improved.

Description

technical field [0001] The invention relates to the field of inertial navigation and positioning, in particular to a high-precision MEMS gyroscope device and an inertial navigation device. Background technique [0002] Micro-electromechanical system (MEMS) inertial sensor is a widely used sensor in the field of inertial navigation, which has the advantages of small size, light weight, low cost, large range and high reliability. MEMS gyroscopes are widely used in mobile robots, automotive systems, data products, and aerospace and navigation. The MEMS gyroscope uses the Coriolis theorem to convert the angular velocity of the rotating object into a voltage signal proportional to it, performs analog-to-digital conversion through the ADC, and finally obtains the angle of the inertial navigation system through digital integration processing. At present, MEMS gyroscopes on the domestic market generally have shortcomings such as low precision and high noise, which cannot meet the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/18G01C25/00G01C19/5776
CPCG01C21/18G01C19/5776G01C25/005
Inventor 骆德渊王朝文伍功宇董继波杜浩然
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA