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Primary mirror position control method and device, large-aperture telescope and readable storage medium

A control method and technology of current position, applied in the space field, can solve the problems of the deformation of the main mirror room and the main mirror, the limited position of the main mirror, and the inability to adjust the position of the main mirror in real time, etc., to achieve the effect of improving accuracy

Active Publication Date: 2020-04-03
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

This method has limited ability to ensure the position of the primary mirror, and at the same time, the mechanical support structure will cause ce

Method used

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  • Primary mirror position control method and device, large-aperture telescope and readable storage medium
  • Primary mirror position control method and device, large-aperture telescope and readable storage medium
  • Primary mirror position control method and device, large-aperture telescope and readable storage medium

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Embodiment Construction

[0017] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0018] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0019] figure 1 It is a schematic flowchart of a method for controlling the position of a primary mirror provided by an embodiment of the present invention. figure 1 The primary mirror position control methods include:

[0020] Step 110: Obtain the measured value and...

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Abstract

The embodiment of the invention provides a primary mirror position control method and device, a large-aperture telescope and a computer readable storage medium. The primary mirror position control method comprises the following steps: acquiring a measured value and a given value of the current position of a primary mirror; obtaining current values of a plurality of pitch axis parameters of the primary mirror; determining a mapping relationship between an error and the plurality of pitch axis parameters based on a relationship between a current error value and current values of the plurality ofpitch axis parameters, the current error value being a difference between a measured value of the current position and a given value; and compensating the position control of the primary mirror by using the error. According to the embodiment of the invention, the mapping relationship between the error and the plurality of pitch axis parameters can be determined, and then the error is utilized tocompensate the position control of the primary mirror, so that the precision of the position control of the primary mirror is improved.

Description

technical field [0001] The invention belongs to the field of space technology, and in particular relates to a method and device for controlling the position of a primary mirror, a large-aperture telescope and a computer-readable storage medium. Background technique [0002] The control of the position of the primary mirror of a large-aperture telescope is of great significance in telescope imaging. If the position of the primary mirror changes greatly, the relative position of the primary and secondary mirrors will also change, which will cause the imaging point of the rear end to drift, and even cause the imaging point to fly out of the field of view, seriously affecting the imaging quality. Therefore, keeping the position of the primary mirror relatively unchanged plays an important role in the imaging stability of large-aperture telescopes. However, when the large-aperture telescope reaches a certain caliber, due to the heavy weight of the primary mirror and the mirror c...

Claims

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Application Information

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IPC IPC(8): G02B7/182G02B7/183
CPCG02B7/1821G02B7/183
Inventor 李玉霞张斌郭鹏飞王建立杨晓霞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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