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arXiv 2402.04769cs.RO
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分层运动规划与离线鲁棒模型预测控制在自动驾驶车辆中的应用

Hierarchical Motion Planning and Offline Robust Model Predictive Control for Autonomous Vehicles

Automation & Control Institute (ACIN), TU Wien(维也纳技术大学自动化与控制研究所);Austrian Institute of Technology GmbH (AIT)(奥地利技术研究院);School of Mechanical Engineering, Kyungpook National University(庆北国立大学机械工程学院);Faculty of Electrical and Electronic Engineering, Phenikaa University(菲尼卡大学电气与电子工程学院)

Hung Duy Nguyen, Minh Nhat Vu, Nguyen Ngoc Nam, Kyoungseok Han

AI总结:

针对复杂湿滑路况下自动驾驶的挑战,提出结合人工势场轨迹规划与离线鲁棒模型预测控制的分层策略,通过增广模型提升计算效率并减少输入振动。

摘要:

在恶劣条件下于复杂场景中驾驶车辆是自动驾驶车辆(AVs)面临的最大挑战。为解决这一问题,我们提出了一种分层运动规划与鲁棒控制策略,该策略利用前主动转向系统,在考虑车辆不确定参数的同时,适用于具有不同湿滑路面附着系数的复杂场景。人类车辆(HVs)的行为被考虑并通过智能驾驶员模型(IDM)以跟车模型的形式进行建模。然后,在上层,运动规划器首先利用人工势场(APF)算法生成最优轨迹,以表述任何周围物体,如道路标记、边界以及静态/动态障碍物。为跟踪生成的最优轨迹,在下层,采用离线约束输出反馈鲁棒模型预测控制(RMPC),用于线性参数变化(LPV)系统,通过应用线性矩阵不等式(LMI)优化方法,确保对模型参数不确定性的鲁棒性。此外,通过增广系统模型,我们提出的方法(称为离线RMPC)在提高计算时间和减少输入振动方面,与三种现有RMPC方法(如偏移离线RMPC、在线RMPC和无增广模型的离线RMPC(离线RMPC w/o AM))相比,实现了显著的效率提升。

英文摘要:

Driving vehicles in complex scenarios under harsh conditions is the biggest challenge for autonomous vehicles (AVs). To address this issue, we propose hierarchical motion planning and robust control strategy using the front-active steering system in complex scenarios with various slippery road adhesion coefficients while considering vehicle uncertain parameters. Behaviors of human vehicles (HVs) are considered and modeled in the form of a car-following model via the Intelligent Driver Model (IDM). Then, in the upper layer, the motion planner first generates an optimal trajectory by using the artificial potential field (APF) algorithm to formulate any surrounding objects, e.g., road marks, boundaries, and static/dynamic obstacles. To track the generated optimal trajectory, in the lower layer, an offline-constrained output feedback robust model predictive control (RMPC) is employed for the linear parameter varying (LPV) system by applying linear matrix inequality (LMI) optimization method that ensures the robustness against the model parameter uncertainties. Furthermore, by augmenting the system model, our proposed approach, called offline RMPC, achieves outstanding efficiency compared to three existing RMPC approaches, e.g., offset-offline RMPC, online RMPC, and offline RMPC without an augmented model (offline RMPC w/o AM), in both improving computing time and reducing input vibrations.

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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