一种高真空多层绝热结构层间压力反演方法
By inverting interlayer pressure through interlayer temperature measurement and utilizing polynomial fitting and singular value decomposition methods, the difficulty of measuring interlayer pressure in high-vacuum multilayer insulation materials was solved, enabling high-precision prediction of insulation performance and process optimization.
CN115238506BActive Publication Date: 2026-07-17XI AN JIAOTONG UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI AN JIAOTONG UNIV
- Filing Date
- 2022-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies make it difficult to accurately measure the interlayer pressure of high-vacuum multilayer insulation materials, resulting in large errors in evacuation process optimization and insulation performance prediction.
Method used
Interlayer pressure was obtained by inverting interlayer temperature measurements, and the interlayer pressure distribution was reconstructed by using polynomial fitting and truncated singular value decomposition combined with the Tikhonov regularization method.
Benefits of technology
It enables high-precision measurement of interlayer pressure distribution, guides the optimization of evacuation processes, and improves the accuracy of insulation performance prediction.
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Abstract
一种高真空多层绝热结构层间压力反演方法，通过给定多组层间压力分布，拟合层间压力分布获得多项式系数，将多组压力分布带入MLI仿真程序中，获得多组温度分布，将多组温度分布及多项式系数组成高维样本集，对高维样本集进行截断奇异值分解，使用吉洪诺夫正则化方法求解实测温度对应的正交基系数并重构层间压力所对应的多项式系数；本发明通过精确的层间温度测量反演获得层间压力，准确获得MLI层间压力分布，实现高精度MLI绝热性能预测，从而指导高真空多层绝热结构的抽空工艺方案优化，并为液氢温区绝热结构性能的准确预测奠定基础。
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