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Micro-mechanical- electronic system technology inertial measurement unit

An inertial measurement unit, electronic system technology, applied in measurement devices, measurement acceleration, speed/acceleration/shock measurement, etc., can solve the problems of short life, large volume, low frequency response, etc.

Inactive Publication Date: 2006-11-22
XIAN CHINASTAR M&C
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AI Technical Summary

Problems solved by technology

[0002] At present, the inertial measurement unit (IMU) commonly used in the above-mentioned industries includes angular rate gyroscopes (angular rate sensors) and linear acceleration sensors. Most of their products are mechanical, such as liquid floating or semi-liquid floating, Flexible angular rate gyroscopes with rotating motors, linear acceleration sensors with mass blocks, etc., these old-fashioned inertial measurement units have outstanding shortcomings in practical applications, such as large size, high price, easy damage, low impact acceleration resistance, short life, The measurement range is small (the maximum measurement value of the old-fashioned angular rate gyro is only 500° / s, and the maximum measurement value of the linear acceleration sensor is only 10g), the frequency response is low (up to 100HZ), and most of them do not have the self-test (Self-Test) function, etc., even It is a relatively advanced fiber optic or laser inertial measurement unit, but it is difficult to be widely used due to its high price and large size.

Method used

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  • Micro-mechanical- electronic system technology inertial measurement unit
  • Micro-mechanical- electronic system technology inertial measurement unit
  • Micro-mechanical- electronic system technology inertial measurement unit

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Embodiment Construction

[0021] Referring to the accompanying drawings, the total electrical structure of the MEMS technology inertial measurement unit of the present invention is as follows figure 1 As shown, it includes three angular rate gyroscopes I, II, and III for measuring the angular rates of the X, Y, and Z axes in space and three linear acceleration sensors IV, V, VI, each angular rate gyroscope I, II, III and each linear acceleration sensor IV, V, VI are set in parallel through a CS-01 type adapter circuit board VII, and each angular rate gyroscope I, II , III and the input and output ends of the linear acceleration sensors IV, V, VI are connected to the corresponding transfer holes of the CS-01 type adapter transfer circuit board VII through cables. The working principle structure of each space axis angular rate gyroscope in the design scheme of the present invention is as follows figure 2 As shown, the working principle structure of each space axis acceleration sensor is as follows im...

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Abstract

The related triaxial 6DoF solid inertial sensor combination with self detection for angular rate and linear acceleration in missile control and strapdown comprises following devices all made by MEMS ships: a sensitive circuit, a signal processor, a main amplifier with a zero-offset controller, a nonlinear corrector, a range expander, a temperature-drift compensator, and a bandwidth expander. This invention has high reliability and package solidity, and well precision.

Description

Technical field [0001] The content of the present invention belongs to the technical field of inertial measurement devices, and relates to an inertial measurement unit for measuring angular velocity and linear acceleration of three axes in a space coordinate system. Its products can be widely used in missile control, geological exploration, industrial measurement and control, aviation Aircraft stability control, strapdown inertial navigation, automotive autopilot and robot control and other industries. Background technique [0002] At present, the inertial measurement unit (IMU) commonly used in the above-mentioned industries includes angular rate gyroscopes (angular rate sensors) and linear acceleration sensors. Most of their products are mechanical, such as liquid floating or semi-liquid floating, Flexible angular rate gyroscopes with rotating motors, linear acceleration sensors with masses, etc., these old-fashioned inertial measurement units have outstanding shortcomings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00G01C21/10G01C23/00G01D21/02G01P15/00
Inventor 谷荣祥张志英何永革王革命董红娟
Owner XIAN CHINASTAR M&C
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