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arXiv 2404.03094cs.ROmath.OC
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模型预测路径积分控制中的低频采样

Low Frequency Sampling in Model Predictive Path Integral Control

Georgia Institute of Technology(佐治亚理工学院);NASA Jet Propulsion Laboratory(美国国家航空航天局喷气推进实验室)

Bogdan Vlahov, Jason Gibson, David D. Fan, Patrick Spieler, Ali-akbar Agha-mohammadi, Evangelos A. Theodorou

AI总结:

本文提出在MPPI控制中用有色噪声分布替代默认高斯分布,通过强调低频控制信号获得更平滑且更具探索性的样本,并在硬件与仿真中验证了其有效性。

摘要:

基于采样的模型预测控制器已成为在各种挑战性环境中进行规划与控制问题的强大优化工具。本文展示了如何通过使用有色噪声分布来改进默认选择的不相关高斯分布。我们所选择的分布允许强调低频控制信号,从而产生更平滑且更具探索性的样本。我们将这种基于频率的采样分布与模型预测路径积分(MPPI)结合,在硬件和仿真实验中展示了在具有不同输入响应速度的系统上取得更好或同等的性能。

英文摘要:

Sampling-based model-predictive controllers have become a powerful optimization tool for planning and control problems in various challenging environments. In this paper, we show how the default choice of uncorrelated Gaussian distributions can be improved upon with the use of a colored noise distribution. Our choice of distribution allows for the emphasis on low frequency control signals, which can result in smoother and more exploratory samples. We use this frequency-based sampling distribution with Model Predictive Path Integral (MPPI) in both hardware and simulation experiments to show better or equal performance on systems with various speeds of input response.

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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