A Multiphysics Coupling Analysis Method for X-ray Pulsar Navigation Devices

Abstract

The invention provides a multi-physics field coupling analysis method for an X-ray pulsar navigation device. The method establishes a thermal-structural coupling equation based on the finite element method, and proposes a method for extracting deformation of an X-ray optical lens and surface fitting method, realized the coupling analysis of the X-ray pulsar navigation device, revealed the influence of single physical field displacement deformation and multi-physics field coupling deformation on the performance of the navigation device, and solved the traditional single-disciplinary analysis without considering the coupling effects of other disciplines. The overly conservative coupling analysis problem of complex products brought about; this method integrates direct coupling equations, finite element analysis methods, adaptive surface shape extraction and fitting methods, and realizes the integration of the entire coupling analysis process of the X-ray pulsar navigation device, Automation realizes the automatic mapping and transmission of multi-source data in each physical field and each analysis stage, and improves the efficiency of coupling analysis.

Description

technical field [0001] The invention relates to the technical field of spacecraft product design, in particular to a multi-physical field coupling analysis method for an X-ray pulsar navigation device. Background technique [0002] Driven by military needs, resource detection and scientific exploration, X-ray pulsar navigation technology has developed rapidly. X-ray pulsar navigator is the core load in this field, and its performance indicators such as spatial resolution, time resolution, and navigation accuracy are constantly improving. The improvement of navigator performance requirements also determines the stability of the optical system and supporting structure of the entire device. The height and size put forward more stringent requirements. At the same time, with the development of small satellite technology, the requirements for the lightweight of X-ray pulsar navigators continue to grow. The design of the X-ray pulsar navigator involves multiple disciplines of lig...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-physics coupling analysis method for X-ray pulsar navigation devices. The method establishes thermal-structural coupling equations based on the finite element method and realizes the X-ray pulse The coupling analysis of star navigation devices solves the problem of overly conservative complex product coupling analysis caused by traditional single-disciplinary analysis without considering the coupling effects of other disciplines

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