arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1911.08751eess.SYcs.SY
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基于学习Koopman特征函数的扩展动态模式分解预测与控制

Extended Dynamic Mode Decomposition with Learned Koopman Eigenfunctions for Prediction and Control

Carl Folkestad, Daniel Pastor, Igor Mezic, Ryan Mohr, Maria Fonoberova, Joel Burdick

摘要:

本文提出了一种新的学习框架来构建Koopman特征函数的未知,非线性动力学使用从实验中收集的数据。该学习框架可以通过学习相关Koopman算子的特征值和特征函数从全非线性动力学中提取谱信息。然后,我们利用学习Koopman特征函数来学习提升的线性状态空间模型。据我们所知,我们的方法是第一个利用Koopman特征函数作为EDMD方法的提升函数。我们展示了性能的框架中的状态预测和闭环轨迹跟踪的模拟车杆系统。我们的方法是能够显着提高控制器的性能,而依赖于线性控制方法做非线性控制。

英文摘要:

This paper presents a novel learning framework to construct Koopman eigenfunctions for unknown, nonlinear dynamics using data gathered from experiments. The learning framework can extract spectral information from the full nonlinear dynamics by learning the eigenvalues and eigenfunctions of the associated Koopman operator. We then exploit the learned Koopman eigenfunctions to learn a lifted linear state-space model. To the best of our knowledge, our method is the first to utilize Koopman eigenfunctions as lifting functions for EDMD-based methods. We demonstrate the performance of the framework in state prediction and closed loop trajectory tracking of a simulated cart pole system. Our method is able to significantly improve the controller performance while relying on linear control methods to do nonlinear control.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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