Distributed type low-speed high-precision device and method for controlling astronomical telescope

Abstract

The invention discloses a distributed type low-speed high-precision device and method for controlling an astronomical telescope, wherein the device and the method are applied to distributed type high-precision control of the astronomical telescope. The device is composed of a field control box, a remote control box and a PC control desk. A driver and a main operation panel are contained in the field control box. A remote operation panel is contained in the remote control box. The PC control desk is composed of an industrial personal computer with an RS485 and operation software running on the industrial personal computer. The remote control box and the PC control desk of the device are in communication with the main operation panel of the main device field control box through an RS485 bus and send out operation instructions so that master-slave distributed type control can be achieved. The main operation panel sends movement control instructions to the driven device driver through a CAN2.0 bus to monitor the running state of the driver. The driver is connected with a motor line and a feedback line in the astronomical telescope, conducts power amplification on the movement control instructions and transmits amplified movement control instructions to a drive motor of the astronomical telescope, position traction interpolation is achieved at a reasonable speed inside power amplification, and precise control is achieved.

Description

technical field [0001] The invention relates to the technical field of astronomical telescope control, in particular to the distributed low-speed and high-precision star tracking control of the astronomical telescope. Background technique [0002] In order to observe the stars in the sky and obtain the astronomical characteristics of the stars, it is hoped that the stars will remain still in the image of the telescope field of view without pixel drift. Due to the rotation of the earth, if the astronomical telescope is stationary, the stars will move from east to west at 15 arc seconds per second. To ensure that the stars remain stationary in the field of view, the telescope also needs to follow them from east to west at a speed of 15 arcseconds per second. Experiments show that the speed error between the two must not exceed 0.01 arcsecond / second, and the position of the star in the field of view image cannot be distinguished by the naked eye, and there is no pixel drift. ...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing astronomical telescope control device realizes the low-speed control of the telescope through the speed ring of the driver, or realizes the low-speed control through the motion control card plus the driver. Fitting the speed of the stars accurately, but the actual instantaneous speed will keep changing, causing the image to fluctuate

At the same time, many astronomical telescopes are still stand-alone control systems, or have only one operation interface, which cannot be remotely controlled

Images