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A moving platform position measurement system and a measurement method based on a linear array CCD

A mobile platform and measurement system technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems of difficult repair, easy deformation, long maintenance cycle, etc., and achieve clear, convenient and reliable solution methods and test data analysis methods. , The effect of short engineering cycle

Inactive Publication Date: 2015-11-04
BEIJING INST OF CONTROL ENG
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Problems solved by technology

However, the area of ​​a single piece of granite table is limited by mining and transportation, so it cannot be too large. At present, the maximum length is known to be no more than 15 meters, which is sufficient for the extremely close-distance docking process and the gravity unloading simulation of a single flexible satellite.
However, if the relative motion process within 30m required by this simulation system is to be verified, the method of splicing small pieces must be used. Due to the weight limit, engineering problems such as foundation, support mechanism, fine-tuning mechanism, gap leveling, surface grinding, etc. are extremely difficult to deal with and easy to deform. Late maintenance cycle is long and renovation is difficult

Method used

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  • A moving platform position measurement system and a measurement method based on a linear array CCD
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  • A moving platform position measurement system and a measurement method based on a linear array CCD

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Embodiment Construction

[0024] In the present invention, the linear array CCD is fixed on the smooth installation surface of the mobile platform, the laser is supported by a high-speed air bearing, the motor drives the laser to rotate at a constant speed to scan the linear array CCD, and the time difference of the CCD array at different points is calculated .

[0025] Using charge coupled device CCD (Charge Coupled Device), the linear array CCD can do a lot of one-dimensional pixels, but the total number of pixels is less than that of the area array CCD camera, and the pixel size is more flexible, and the frame number is high, especially It is suitable for the measurement of one-dimensional dynamic targets. The high acquisition frequency of line array cameras can overcome the shortcomings of area array cameras such as long exposure time and untimely data storage. It is very suitable for the collection of high-speed dynamic target information.

[0026] A linear array CCD-based mobile platform positi...

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Abstract

A moving platform position measurement method is used for dynamic measurement of horizontal inclination angles of orbiter and ascender simulating devices in an all-physic simulation test of weak compact intersection abutting between a moon and the ground. The invention brings forward highly dynamic measurement of accurate position and attitude information of a moving platform on the basis of a CCD scan principle based on a linear array.

Description

technical field [0001] The invention relates to a linear array CCD-based mobile platform position measurement system and a measurement method, which belong to the field of space vehicle ground full physical simulation. Background technique [0002] The large ultra-flat granite platform is the key equipment of the full physical simulation system on the ground of space vehicles, and is the reference plane and bearing plane for the plane motion of the six-degree-of-freedom air bearing platform. Its performance directly affects the accuracy of the test, and even affects the smooth progress of the test. The test based on the translational and rotating air bearing platform is mainly used for ground simulation in the fields of rendezvous and docking, space robots and formation flight, and has been carried out internationally for more than 20 years. In the early stage, granite countertops were commonly used, mainly because granite has a high density, is not easy to deform, and is le...

Claims

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Application Information

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IPC IPC(8): G01B11/00
Inventor 唐强刘磊贾永张勇智周扬段文杰
Owner BEIJING INST OF CONTROL ENG
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