digital twins construction method of a FAST active reflection surface

A construction method and reflective surface technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve significant, healthy and safe operation effects

Active Publication Date: 2019-06-11
NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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Problems solved by technology

[0015] The purpose of the present invention is to provide a digital twin construction met...

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  • digital twins construction method of a FAST active reflection surface

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[0043] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a ...

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Abstract

The invention discloses a digital twins construction method of a FAST active reflection surface, and the digital twins technology is a novel technology which combines digital information of equipmentwith data streams obtained in real time during the operation of the equipment, and obtains the real operation state of the actual equipment through simulation analysis. By means of the digital twins technology, equipment operators can obtain some data which cannot be collected when the equipment runs or the collected data size cannot meet the fault diagnosis requirement. By analyzing the data, theactual operation state of the equipment can be mastered, the equipment fault can be predicted in advance, and then the on-demand maintenance of the equipment can be realized (CBM, CBM). According tothe method, a high-precision sensor and measurement equipment which are arranged on the FAST active reflection surface are utilized, the construction of digital twins of the FAST active reflection surface is completed by adopting an iterative algorithm, and a good foundation is laid for fault prediction and health management research of the FAST active reflection surface.

Description

Technical field [0001] The invention relates to the field of digital twin construction methods, in particular to a digital twin construction method of a FAST active reflective surface. Background technique [0002] The 500m-aperture spherical radio telescope (Five-hundred-meter aperture spherical radiotelescope, FAST) is the world's largest single-aperture radio telescope. The reflective surface of the telescope adopts a unique working method of active displacement, which can form a paraboloid with a diameter of 300m in different areas of the 500m-diameter reflective surface according to the angle of observation of the celestial body. The operating frequency of the telescope is between 70MHz and 3GHz. [0003] In order to realize the active displacement characteristics of the reflecting surface, FAST uses a flexible cable net as the main support structure. The cable net structure includes 6,670 main cables and 2225 main cable nodes, and the cable net is fixed on the ring beam. T...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李庆伟姜鹏李辉
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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