一种空间光学载荷承力结构的智能优化及微振动抑制方法

By combining a cascaded neural network surrogate model and a multi-objective genetic algorithm, the problem of synergistic optimization of micro-vibration suppression and optical imaging performance of space optical payloads was solved, achieving efficient and accurate structural parameter optimization, and improving the imaging quality and lightweight design of space optical payloads.

CN121683530BActive Publication Date: 2026-07-17SHANGHAI JIAOTONG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Filing Date
2025-12-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively suppress micro-vibrations of space optical payloads under constraints of limited weight and volume. Traditional methods lead to increased structural mass and installation complexity, and lack synergistic optimization of optical imaging performance. Existing neural networks have low prediction accuracy and poor interpretability, making it difficult to achieve multi-objective optimization.

Method used

A cascaded neural network surrogate model combined with a multi-objective genetic algorithm is adopted. By establishing a mathematical model for optimizing the structural parameters of the optical load, the cascaded neural network model is trained and iteratively optimized using a multi-objective genetic algorithm. Taking into account performance indicators such as load mass, structural fundamental frequency and image point offset, the Pareto optimal solution set is output.

Benefits of technology

It achieves efficient optimization of space optical payload structure under multiple constraints and objectives, reduces computational load, improves image shift prediction accuracy and model interpretability, and enhances the synergistic optimization effect of optical imaging performance and structural lightweighting.

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Abstract

本发明公开了一种空间光学载荷承力结构的智能优化及微振动抑制方法。本发明通过构建结构参数‑光学响应的多目标优化模型,实现了空间光学载荷轻量化、高基频与低像移的协同优化。该方法采用级联神经网络作为代理模型,通过引入节点位移作为中间物理量,显著提升了像移预测精度与模型可解释性,大幅减少有限元计算量。结合改进的多目标遗传算法,引入动态权重与混合支配判据,自适应强化光学性能约束,提升收敛效率与工程适用性。最终通过集成化软件平台实现全流程闭环优化,有效解决了传统方法中光学与结构性能难以兼顾、优化效率低下的问题。
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