Arc driving heavy caliber astronomical telescope

Abstract

An arc-driven large-bore astronomical telescope is driven by a RE permanent-magnet synchronized arc motor. A control mechanism includes an upper machine and a lower machine; the upper machine is connected with the lower machine through serial communication; the lower machine carries out the real-time control; a motor stator is composed of 15 blocks, each block consists of 9 complete silicon steel plates and two silicon steel plates for reducing the edge effect; an armature winding is arranged according to UVWUVWUVW from right to left; a rotor is composed of 4 blocks and has 120 magnetic steel plates in total, the rotor adopts the torque design for reducing tooth space and is provided with a fastening device; an absolute coder and an incremental coder are simultaneously arranged in the control mechanism signal collecting and comparing links, the former is used for the turnover of a servo motor and the latter is used for testing the position of the servo motor; the signal of the coder is transferred to the DSP module of the lower machine through a singlechip; a drive circuit adopts a digital-driven intelligent power module. The present invention can achieve the needs of long-time, high-precision tracing and observing various celestial bodies and meet the requirements of precision and wide speed regulation in astronomic observation.

Description

technical field [0001] The invention relates to an astronomical telescope, in particular to an arc-driven large-aperture astronomical telescope. That is, a large-aperture astronomical telescope directly driven by an arc motion motor. This invention is a project funded by the National Natural Science Foundation of China, and the approval number is 10778629. Background technique [0002] The mechanical movement of the astronomical telescope when making observations is a tracking movement of the viewing angle of the observed celestial body, which is actually a compensatory movement for the rotation of the earth, so the average speed of this movement is 360° / 24 hours (very slow). Moreover, the range of movement (or called the distance of movement) required for each observation of all astronomical telescopes generally does not exceed an arc of 180°. That is to say, the motion of the astronomical telescope during observation is a very slow arc motion limited to an arc range. Th...

AI Technical Summary

Problems solved by technology

To realize this motion mode, a motor with an arc motion, a control system and control software for effectively controlling the motion of the motor and the telescope are required, so there is no large-aperture astronomical telescope driven by this arc in the prior art.

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