用智能体自适应优化传感器位置,提升动态测试准确性
Towards Agent-based Test Support Systems: An Unsupervised Environment Design Approach
- 构建基于智能体的决策框架,动态调整传感器布局
- 在钢制悬臂结构上验证,多频段优化效果显著
- 适合需要高精度动态测试的工程场景
模态测试在结构分析中至关重要,能提供广泛工程领域中的动态行为关键信息。实际测试设计涉及复杂的实验规划,包含一系列相互依赖的决策,显著影响最终测试结果。传统方法通常为静态,仅关注全局测试,未考虑测试过程参数变化对先前决策(如传感器配置)的影响,后者已被证实显著影响测试结果。此类僵化方法常导致测试准确性和适应性下降。为此,本文提出一种基于智能体的自适应传感器布置决策支持框架。该框架将问题建模为未完全指定的部分可观测马尔可夫决策过程,通过双课程学习策略训练通用强化学习智能体。针对钢制悬臂结构的详细案例研究证明,该方法可在不同频率段优化传感器位置,验证了其在实验环境中的鲁棒性与实际应用价值。
原文摘要 · Abstract (English)
Modal testing plays a critical role in structural analysis by providing essential insights into dynamic behaviour across a wide range of engineering industries. In practice, designing an effective modal test campaign involves complex experimental planning, comprising a series of interdependent decisions that significantly influence the final test outcome. Traditional approaches to test design are typically static-focusing only on global tests without accounting for evolving test campaign parameters or the impact of such changes on previously established decisions, such as sensor configurations, which have been found to significantly influence test outcomes. These rigid methodologies often compromise test accuracy and adaptability. To address these limitations, this study introduces an agent-based decision support framework for adaptive sensor placement across dynamically changing modal test environments. The framework formulates the problem using an underspecified partially observable Markov decision process, enabling the training of a generalist reinforcement learning agent through a dual-curriculum learning strategy. A detailed case study on a steel cantilever structure demonstrates the efficacy of the proposed method in optimising sensor locations across frequency segments, validating its robustness and real-world applicability in experimental settings.
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