A multi-objective optimization method for pulsar detectors based on multi-field coupling analysis

Abstract

The invention relates to a pulsar detector multi-target optimization method based on multi-field coupling analysis. According to the pulsar detector multi-target optimization method, based on X-ray total reflection theory and multi-field coupling characteristic analysis, a multi-target optimization model using detection sensitivity and weight minimization as a target is established, and multi-target optimization is performed by using a Pareto method based on a genetic algorithm to obtain a product multi-target Pareto noninferior solution set; three dimensional modeling is driven based on optimized data, an X-ray pulsar detector light machine thermal coupling analysis model is established, and thermal and structural environmental conditions are simultaneously applied to obtain the strain and the displacement distribution of the product; and the deformation of the surface shape of an optical lens is extracted, the deformed optical system surface shape is obtained by using a polynomial fitting method, and the focusing performance is analyzed based on a ray tracing method. According to the present invention, the automation of the whole process comprising modeling, analysis and design optimization of the X-ray pulsar detector is achieved, and the multi-target pareto solution set of the product is obtained, such that the design efficiency is improved, and more reasonable selections are provided for the design staff.

Description

technical field [0001] The invention relates to the technical field of spacecraft product design, in particular to a multi-objective design optimization method for an X-ray pulsar detector. Background technique [0002] With the development of my country's aerospace technology and the drive of future military needs, the implementation of missions such as deep space exploration, scientific exploration, and small satellite formations all require spacecraft autonomous navigation technology, and X-ray pulsar navigation technology is a very Development potential of autonomous navigation technology. The realization of X-ray pulsar navigation mainly depends on the development of lightweight and high-sensitivity pulsar detectors. The increasingly harsh deep space environment and the development trend of spacecraft miniaturization urgently require the development of lightweight and highly sensitive X-ray pulsar detectors. In fact, the X-ray pulsar detector is a typical complex produ...

AI Technical Summary

Problems solved by technology

[0003] The traditional pulsar detector design process often only carries out the analysis of a single physical field such as structure, thermal, optics, etc., which splits the inherent characteristics of the natural coupling of the product and ignores the coupling effect between multiple physical fields, resulting in the failure of the pulsar detector. Analysis results cannot truly reflect the actual situation

The current design optimization of pulsar detectors still has the following two problems: First, it is still limited to single-objective optimization, such as the best optical performance, the lightest weight, and the largest area.

Second, the current optimization is mostly limited to the optimization based on mathematical models, or based on the finite element analysis of a single physical field. optimal solution, but cannot obtain an overall compromise optimization solution that comprehensively considers the coupling effects between multiple physical fields and the conflict characteristics between multiple targets

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