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arXiv 2409.08648cs.RO
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切换模型预测路径积分控制器的采样空间以平衡4WIDS车辆导航的效率与安全性

Switching Sampling Space of Model Predictive Path-Integral Controller to Balance Efficiency and Safety in 4WIDS Vehicle Navigation

Nagoya University(名古屋大学)

Mizuho Aoki, Kohei Honda, Hiroyuki Okuda, Tatsuya Suzuki

AI总结:

针对4WIDS车辆导航解空间维度高、最优指令求解难的问题,提出可切换MPPI采样空间的导航架构,通过降维采样与实时空间切换,实现导航效率与安全性的平衡,仿真验证了方法的有效性。

摘要:

四轮独立驱动转向车辆(4WIDS车辆,即Swerve Drive Robot转向驱动机器人)凭借8个自由度(DoF)控制输入具备全向移动能力。尽管其高机动性可实现狭窄空间内的高效导航,但解空间的高维度给最优指令的求解带来了挑战。本文提出一种采用模型预测路径积分(MPPI,Model Predictive Path Integral)控制算法的导航架构,可躲避任意形状的障碍物并抵达目标点。降低问题求解难度的核心思路是,在足以满足导航需求的合理降维空间中探索最优控制输入。通过仿真评估发现,MPPI采样空间的选择对导航性能影响显著。此外,本文提出的可根据实时情况切换多个采样空间的控制器,能够实现效率与安全性之间的平衡表现。源代码可在https://github.com/MizuhoAOKI/mppi_swerve_drive_ros 获取。

英文摘要:

Four-wheel independent drive and steering vehicle (4WIDS Vehicle, Swerve Drive Robot) has the ability to move in any direction by its eight degrees of freedom (DoF) control inputs. Although the high maneuverability enables efficient navigation in narrow spaces, obtaining the optimal command is challenging due to the high dimension of the solution space. This paper presents a navigation architecture using the Model Predictive Path Integral (MPPI) control algorithm to avoid collisions with obstacles of any shape and reach a goal point. The key idea to make the problem easier is to explore the optimal control input in a reasonably reduced dimension that is adequate for navigation. Through evaluation in simulation, we found that selecting the sampling space of MPPI greatly affects navigation performance. In addition, our proposed controller which switches multiple sampling spaces according to the real-time situation can achieve balanced behavior between efficiency and safety. Source code is available at https://github.com/MizuhoAOKI/mppi_swerve_drive_ros

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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