Horizontal exciting device for testing cross coupling coefficient of inertia sensor

A technology of inertial sensor and vibration excitation device, which is applied in the direction of measuring device, speed/acceleration/shock measurement equipment testing/calibration, instruments, etc., can solve the problem of large motion coupling and cannot horizontal vibration of vibration excitation device, and achieve easy control Effect

Active Publication Date: 2019-05-03
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide a horizontal excitation device for testing the cross-coupling c

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  • Horizontal exciting device for testing cross coupling coefficient of inertia sensor
  • Horizontal exciting device for testing cross coupling coefficient of inertia sensor
  • Horizontal exciting device for testing cross coupling coefficient of inertia sensor

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The horizontal vibration excitation device provided by the embodiment of the present invention is mainly used for testing the cross-coupling coefficient of the horizontal line motion of the inertial sensor, which can make the device under test generate relatively pure horizontal line vibration, and more accurately measure the cross-coupling coefficient of the inertial sensor.

[0026] The schematic diagram of the structure of the horizontal vibration device provided by the embodiment of the present invention is as follows: figure 1 , figure 2 and image 3 Shown: The horizontal excitation ...

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Abstract

The invention discloses a horizontal exciting device for testing a cross coupling coefficient of an inertia sensor. The device comprises a suspension structure, an exciting unit and an adjustment mechanism. The suspension structure is used for fixed connection of the inertial sensor, uses a multi-reed suspension manner, and has the advantages of low horizontal rigidity and high cross inhibition ratio; the exiting unit generates a force needed by motion by interaction between coils and permanent magnets, and angular motion in the vertical direction and horizontal movement of a non-sensitive shaft can be inhibited by controlling the magnitude of current in the driving coils and feedback control of the non-driving coils; and the adjustment mechanism is used to adjust the effective work lengths of the reeds, and ensure that the effective lengths of the reeds are consistent during work of the whole device. Via design of the suspension structure, exciting unit and adjustment mechanism, the problem that the exciting device cannot generate purely horizontal vibration due to high motion coupling in the different freedom degrees in the prior art can be solved.

Description

technical field [0001] The invention belongs to the technical field of inertial sensor testing, and more particularly relates to a horizontal vibration excitation device for testing the cross-coupling coefficient of inertial sensors. Background technique [0002] Horizontal line acceleration cross-coupling noise is the main factor limiting the measurement resolution of inertial sensors. In the development of inertial sensors, it is necessary to measure the cross-coupling coefficient of horizontal line motion. The measurement method used is to drive the inertial sensor to do harmonic vibration in the horizontal direction through the horizontal vibration device. , extract the same frequency and same phase signal (horizontal line motion cross-coupling error signal) from the output signal of the instrument, and obtain the cross-coupling coefficient of the instrument in this degree of freedom after data processing. Since the motion (vertical, rotation, and tilt) of each non-sensi...

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Application Information

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IPC IPC(8): G01C25/00G01P21/00
Inventor 张露邱云涛张宁刘向东
Owner HUAZHONG UNIV OF SCI & TECH
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