Dual Redundant Telescope Tracking Device for Astronomical Telescopes

Abstract

A dual-redundancy telescope tracking device for an astronomical telescope comprises a pitch axis set and an azimuth axis set and is characterized in that two sets of tracking systems are respectively adopted for the pitch axis set and the azimuth axis set, and then an azimuth axis dual-redundancy axis set and a height axis dual-redundancy axis set are respectively formed; the two sets of tracking systems are automatically switched through a control system; the two sets of tracking systems in the pitch axis set jointly drive a height axis and share a set of feedback systems and a set of height limiting and braking systems; the two sets of tracking systems in the azimuth axis set jointly drive an azimuth axis and share a set of feedback systems and a set of azimuth limiting and braking systems. The dual-redundancy telescope tracking device has the advantages that bearing capacity is high, friction force is low, power consumption is small, transmission efficiency is high, and rotation accuracy is high; positioning accuracy can reach 20 degrees per second at high speed and reach 0.05'' per second at low speed, and no creeping phenomenon exists; emergency braking and mechanical shock protection can be achieved at the same time through braking and limiting, and the rotation range can be adjusted within the range from 0 degree to 360 degrees in the forward direction and in the reverse direction. The dual-redundancy telescope tracking device can be also used for other heavy high-precision rotating equipment.

Description

technical field [0001] The invention relates to a tracking frame of a precision optical instrument, in particular to a double-redundant telescope tracking device for an astronomical telescope. The present invention is the research achievement of the following projects: National Natural Science Foundation General Project (Project No.: 11273039), Jiangsu Industry-University-Research Project (Project No. BY2011167), Chinese Academy of Sciences Astronomy Special Project (C-113). Background technique [0002] Most of the modern large-scale astronomical telescopes adopt the ground-level structure, including the pitch axis system and the azimuth axis system. It bears the weight of tens or even thousands of tons of rotating parts, and has extremely high motion precision and good stability to ensure that the telescope can run smoothly, accurately, and at ultra-low speed. The pitch axis is needed to support the optics of the telescope and its important optical instruments. And requi...

AI Technical Summary

Problems solved by technology

Gear transmission is generally used in medium and small astronomical telescopes, and friction drive is mostly used in large and medium-sized astronomical telescopes. When gear transmission is used in large and super large astronomical telescopes, there are the following difficulties: processing of large and extra large precision gears and worm gears There is very little equipment, and the processing equipment specially developed for ultra-large precision gears and worm gears is difficult to meet the actual design requirements due to its complex technology, high cost, and long development process. In addition, there are gear transmission gaps in the drive system, and the rigidity of the system is weak. Factors such as complex structural model and mechanism; friction drive will cause crawling problems when running at ultra-low speed in ultra-large-caliber astronomical telescopes

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