arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.02219eess.SYcs.SY
收藏

基于库普曼算子的深度神经网络用于自动驾驶车辆建模与控制

Deep Neural Networks with Koopman Operators for Modeling and Control of Autonomous Vehicles

Yongqian Xiao, Xinglong Zhang, Xin Xu, Xueqing Liu, Jiahang Liu

AI总结:

本文提出基于深度神经网络与可解释库普曼算子的数据驱动车辆建模方法,并结合模型预测控制实现自动驾驶车辆路径跟踪,在CarSim仿真中验证了建模精度与控制有效性。

摘要:

自动驾驶技术在过去的几十年中受到了显著关注。在自动驾驶系统中,由于车辆动力学中存在强非线性和不确定性,为运动控制辨识精确的动力学模型并非易事。近年来的研究已借助机器学习技术构建车辆动力学模型,但现有方法的泛化能力和可解释性仍有待提高。本文提出了一种基于深度神经网络与可解释库普曼算子的数据驱动车辆建模方法。使用库普曼算子的主要优势在于能够将非线性动力学表示在线性提升特征空间中。在所提出的方法中,给出了一种基于深度学习的扩展动态模式分解算法,用于学习库普曼算子的有限维近似。此外,还设计了基于所学库普曼模型的数据驱动模型预测控制器,用于自动驾驶车辆的路径跟踪控制。在高保真CarSim环境中的仿真结果表明,我们的方法在宽工作范围内表现出较高的建模精度,并且在建模性能上优于先前发展的方法。自动驾驶车辆的路径跟踪测试同样在CarSim环境中进行,结果验证了所提出方法的有效性。

英文摘要:

Autonomous driving technologies have received notable attention in the past decades. In autonomous driving systems, identifying a precise dynamical model for motion control is nontrivial due to the strong nonlinearity and uncertainty in vehicle dynamics. Recent efforts have resorted to machine learning techniques for building vehicle dynamical models, but the generalization ability and interpretability of existing methods still need to be improved. In this paper, we propose a data-driven vehicle modeling approach based on deep neural networks with an interpretable Koopman operator. The main advantage of using the Koopman operator is to represent the nonlinear dynamics in a linear lifted feature space. In the proposed approach, a deep learning-based extended dynamic mode decomposition algorithm is presented to learn a finite-dimensional approximation of the Koopman operator. Furthermore, a data-driven model predictive controller with the learned Koopman model is designed for path tracking control of autonomous vehicles. Simulation results in a high-fidelity CarSim environment show that our approach exhibit a high modeling precision at a wide operating range and outperforms previously developed methods in terms of modeling performance. Path tracking tests of the autonomous vehicle are also performed in the CarSim environment and the results show the effectiveness of the proposed approach.

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。

↑