A test method and test system for the response frequency of an inertial group body

A technology of response frequency and test method, which is applied in the direction of measuring devices and instruments, can solve the problems of increased workload, cumbersome steps of sticky sensors, and inability to test response frequency, etc., and achieve the effect of improving accuracy and precision and flexible data processing

Active Publication Date: 2019-07-12
BEIJING AEROSPACE ERA LASER NAVIGATION TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0004] However, the existing technical solutions require the inertial group to open the upper cover, which changes the technical state of the inertial group, so additional mechanical tests are arranged to test the performance of the inertial group, which affects the production process of the inertial group; The sensor steps are cumbersome and add extra work
In addition, existing technical solutions cannot test other response frequencies of the body (such as gyro frequency shaking, etc.)

Method used

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  • A test method and test system for the response frequency of an inertial group body
  • A test method and test system for the response frequency of an inertial group body
  • A test method and test system for the response frequency of an inertial group body

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Embodiment Construction

[0028] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0029] see figure 2 The test system for the response frequency of the inertial group body of the present invention includes an inertial group, a vibration table and inertial group testing equipment. The inertial group is installed and fixed on the vibration table. Instruments, boxes, electronic boxes and electrical interfaces, the inertial group body is equipped with the important instruments, the important instruments include accelerometers and gyroscopes. The inertial group body is installed in the box through the damping system, and the box is installed and fixed on the vibration table; the electronic box is installed in the box and electrically connected with the important instrument, To conduct electrical processing on the output data of important instruments; the electrical interface is the electrical output interface of the electronic box, which is opened on ...

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Abstract

The invention discloses a method and a system for testing response frequency of an inertial measurement unit body. An acceleration meter (capable of measuring the acceleration speed) mounted on the inertial measurement unit body is used, pulse output of the acceleration meter is collected directly in the normal technological vibration and acceptance vibration processes of an inertial measurement unit, and frequency response, top shaking frequency and other response frequencies of the inertial measurement unit body are acquired so as to be used for analysis of response of a vibration reduction system by the aid of data. According to the method and the system, an upper cover of the inertial measurement unit is not required to be opened, a sensor is not required to the glued, normal production of the inertial measurement unit is not affected, data processing is flexible, and the performance test accuracy and precision of the vibration reduction system are high.

Description

technical field [0001] The invention relates to a frequency test method and a test system, in particular to a test method and a test system for the response frequency of an inertial group body. Background technique [0002] Laser inertial navigation has been successfully used in launch vehicles, missiles, satellites, aircraft, ships and other civilian fields, providing angular velocity and apparent acceleration information for launch vehicles, missiles, satellites, aircraft, ships, etc., which is the key equipment. The laser inertial group is composed of important instruments (laser gyro, accelerometer (referred to as plus meter)), body, box, shock absorber, electronic box, etc. The important instruments of the inertial group (gyroscope and plus meter) are installed on the body, and the body passes through The vibration reduction system is installed on the box. The performance parameters of the vibration reduction system are very important to the inertial group. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 李志华郭恺郑晓李世杰黄世涛王冬梅
Owner BEIJING AEROSPACE ERA LASER NAVIGATION TECH CO LTD
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