arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.08965math.OCcs.NAmath.NA
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使用深度神经网络计算李雅普诺夫函数

Computing Lyapunov functions using deep neural networks

Lars Grüne

摘要:

我们提出了一种深度神经网络架构和训练算法,用于计算非线性常微分方程系统的近似李雅普诺夫函数。假设系统允许一个组合的李雅普诺夫函数,我们证明了所需的神经元的数量近似的李雅普诺夫函数与固定的精度增长,只有多项式的状态维,即,所提出的方法能够克服维数灾难。我们证明了满足小增益条件的非线性系统允许复合李雅普诺夫函数。在多达十个空间维度的数值例子说明了训练计划的性能。

英文摘要:

We propose a deep neural network architecture and a training algorithm for computing approximate Lyapunov functions of systems of nonlinear ordinary differential equations. Under the assumption that the system admits a compositional Lyapunov function, we prove that the number of neurons needed for an approximation of a Lyapunov function with fixed accuracy grows only polynomially in the state dimension, i.e., the proposed approach is able to overcome the curse of dimensionality. We show that nonlinear systems satisfying a small-gain condition admit compositional Lyapunov functions. Numerical examples in up to ten space dimensions illustrate the performance of the training scheme.

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