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Arc driving heavy caliber astronomical telescope

An astronomical telescope, large-aperture technology, applied in the field of astronomical telescopes

Inactive Publication Date: 2010-11-17
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Arc driving heavy caliber astronomical telescope
  • Arc driving heavy caliber astronomical telescope
  • Arc driving heavy caliber astronomical telescope

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0068] Embodiment 1, the arc motion control system of a large-aperture astronomical telescope includes an upper computer system and a lower computer system. The upper computer is connected with the SCI module of DSP through serial communication, and the upper computer realizes the functions of online centralized monitoring, comprehensive management, performance detection and safety protection of the arc motion control system. The lower computer system includes a DSP module, an execution motor, a signal acquisition and comparison link, and a position data processing single-chip microcomputer (ARM7). The lower computer completes the corresponding control algorithm according to the control instructions of the upper computer, and performs real-time control on the arc motor motion control system. The motor is connected with a motor drive circuit and a protection circuit. The astronomical telescope is driven by an arc motor. The arc motor adopts a high-torque AC rare earth permanent...

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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 steelplates 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 steelplates 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/02H02K21/12H02K1/16H02K1/27H02P6/08H02P6/16H02H7/08G02B23/00H02P6/17
Inventor 张振超胡伟任长志汪达兴朱震莲李颖
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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