Position tracking and controlling system of azimuth axis of giant telescope

Abstract

The invention provides a position tracking and controlling system of an azimuth axis of a giant telescope. A software system comprises upper computer software and lower computer software, wherein the software system comprises a control circuit, a driving circuit, a position feedback circuit and a protection circuit. A motor is an arc motor formed by splicing 200 pairs of extreme ultralow-speed multiple electrodes and is integrated with a load; the motor is composed of 8 unit motors; each unit motor can be independently operated or is operated in series and in parallel; a multi-phase permanent-magnet synchronous motor is composed of the two groups of unit motors; an upper computer is used for sending a resetting command and a position command, and displaying and receiving speed position information in real time and is provided with a communication port for communicating with a telescope observation control system; a lower computer adopts two controllers for controlling two sets of windings in the multi-phase permanent-magnet synchronous motor respectively. The control system is combined with bus voltage control, intelligent control and space voltage vector control; the high-precision, ultralow-speed, large-inertia and wide-speed-regulation control requirements on the giant telescope are met.

Description

technical field [0001] The invention relates to a motor drive control method, in particular to a position tracking control system of an azimuth axis of a very large telescope. The invention belongs to an important direction project of the Knowledge Innovation Project of the Chinese Academy of Sciences: pre-study on key technologies of very large aperture optical / infrared telescopes. Background technique [0002] Human beings' exploration of the universe is of far-reaching significance, which has a huge impetus to the development of astronomy. In order to explore weaker signals, it is necessary to improve the telescope's light-gathering ability and resolution ability, which requires a larger aperture and a larger field of view. It is necessary Develop extremely large aperture telescopes. Both optical telescopes and radio telescopes are developing toward large-aperture telescopes. At present, all countries in the world are cooperating or independently developing their own lar...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem that the direct drive technology used in the small telescopes in the prior art cannot solve the problem of control technology in the tracking of large aperture telescopes, the purpose of the present invention is to provide a tracking control system for the azimuth axis position of very large telescopes. The system can meet the control requirements of extremely large telescopes with high precision, ultra-low speed, large inertia, and wide speed regulation

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