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An Initial Calibration Method for the Arc Segment Motor Control System of a Telescope

A technology of motor control and calibration method, which is applied in the field of servo control and can solve the problems of motor processing, transportation, and installation difficulties.

Active Publication Date: 2020-05-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0002] With the increasing demand for deep space exploration, the aperture of ground-based telescopes is getting larger and larger, which requires the diameter of the drive motor to be larger and larger. If the traditional packaged DC motor solution is continued, the processing and transportation of the motor will be greatly reduced. , installation has brought great difficulties

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  • An Initial Calibration Method for the Arc Segment Motor Control System of a Telescope
  • An Initial Calibration Method for the Arc Segment Motor Control System of a Telescope
  • An Initial Calibration Method for the Arc Segment Motor Control System of a Telescope

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Embodiment Construction

[0024] Please refer to Figure 1 to Figure 3 , the initial calibration method of the arc segment motor control system of a kind of telescope of the present invention, comprises the following steps:

[0025] Step S1. Calibrate the positive direction of the electrical angle rotation of the motor and be consistent with the positive direction of the encoder rotation: take the clockwise rotation direction of the turntable of the telescope as the positive direction, which is the positive direction of the encoder rotation, and also the positive direction of the electrical angle rotation of the motor ; When the motor rotates in the positive direction at the electrical angle of the motor, the U opposite electromotive force of the motor leads the V opposite electromotive force of the motor by 120°, and the V opposite electromotive force of the motor leads the W opposite electromotive force of the motor by 120°;

[0026] Step S2, electrical angle calibration of the motor: the zero-crossi...

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Abstract

The invention relates to the technical field of servo control, in particular to an initial calibration method of an arc segmented motor control system of a telescope; the steps of the invention are to first calibrate the positive direction of the motor's electrical angle rotation and be consistent with the positive direction of the encoder's rotation; angle calibration; then perform the first two steps in sequence for each segmented motor, so that the output size and direction of each segmented motor are consistent; the present invention first calibrates the positive rotation direction of the electrical angle of the motor and is consistent with the positive rotation direction of the encoder, Then calibrate the electrical angle of the motor, and then repeat it for each arc segmented motor, so that the output size and direction of all the arc segmented motors in the telescope are consistent, so as to meet the requirements of high-precision control.

Description

technical field [0001] The invention relates to the technical field of servo control, in particular to an initial calibration method for an arc segment motor control system of a telescope. Background technique [0002] With the increasing demand for deep space exploration, the aperture of ground-based telescopes is getting larger and larger, which requires the diameter of the drive motor to be larger and larger. If the traditional packaged DC motor solution is continued, the processing and transportation of the motor will be greatly reduced. , installation have brought great difficulties. For this reason, at the end of the 20th century, the European Southern Observatory (ESO) took the lead in adopting the driving method of arc-shaped segmented motors suitable for large telescopes. The motors of this structure have been successfully applied to many large-aperture astronomical telescopes, such as the southern European The Observatory's 8.2m VLT Telescope, the National Astrono...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02G01R31/34
CPCG01R31/343G05B23/0213
Inventor 王帅王建立李洪文邓永停刘洋杨晓霞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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