Method for real-time monitoring of surface precision of active reflector of FAST based on digital twin technology

A technology for surface accuracy and real-time monitoring, which is applied in measurement devices, electromagnetic measurement devices, and electromagnetic/magnetic profile/curvature measurements to ensure healthy operation.

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

[0011] The purpose of the present invention is to provide a real-time monitoring method for the surface accuracy of FAST active reflective surfaces based on digital twin technology, so as to solve the technical problems existing in the prior art

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  • Method for real-time monitoring of surface precision of active reflector of FAST based on digital twin technology
  • Method for real-time monitoring of surface precision of active reflector of FAST based on digital twin technology

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Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] 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 referred device or element must have a specific orientation, ...

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Abstract

The invention discloses a method for real-time monitoring of surface precision of an active reflector of a FAST based on a digital twin technology. According to the method, the most advanced digital twin technology is adopted, an actual operation state of the active reflector of the FAST is mapped to a digital model in real time in order to form a digital twin of the active reflector of the FAST,and the surface precision of the reflector is monitored in real time through continuous finite element analysis of the digital twin. According to stored historical monitoring data, a distribution situation of surface errors and a development trend are analyzed, when to update a calibration database and a maintenance advice for preferentially updating the calibration database in which position aregiven, and the calibration database is subjected to condition-based maintenance and dynamic update. The method can help a telescope operator to timely formulate a maintenance scheme and update the calibration database in advance, so that the risk that the influence on normal scientific observation is caused by poor surface precision of the active reflector of the FAST due to insufficient precisionof the calibration database is avoided, and the healthy operation of the FAST is powerfully guaranteed.

Description

technical field [0001] The invention relates to the field of real-time monitoring methods for the profile accuracy of FAST active reflective surfaces, in particular to a method for real-time monitoring the profile accuracy of FAST active reflective surfaces based on digital twin technology. Background technique [0002] Digital twin technology is an emerging technology that combines product-specific digital information with operational data streams obtained in real-time during product operation, as well as physics-based understanding and analysis to gain deep product insights. Improvements in simulation software, hardware, and processing speed, as well as the rise of the Internet of Things (LOT), have made the application of this technology possible. [0003] The Five-hundred-meter aperture spherical radiotelescope (FAST) is the largest single-aperture radio telescope in the world. The reflective surface of the telescope adopts a unique working method of active displacement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01B7/28
Inventor 李庆伟李辉姜鹏
Owner NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI
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