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 1807.01845eess.SYcs.SY
收藏

变形移动地平线估计

Metamorphic Moving Horizon Estimation

Australian Centre for Field Robotics, The University of Sydney(澳大利亚悉尼大学野外机器人中心)

He Kong, Salah Sukkarieh

AI总结:

本文提出一种方法,将预估计器与参数λ结合到MHE的二次成本函数中,通过调整λ逐步提升估计性能。

摘要:

本文考虑了一个实际场景,其中在尝试应用更先进的移动地平线估计(MHE)技术时,经典估计方法可能已在某个平台上实现。我们希望利用MHE来升级而非完全弃用现有估计技术。为此,我们提出了一种通用方法,将预估计器与介于0和1之间的参数λ结合到通常用于MHE的二次成本函数中。我们在这两种标准MHE框架中检验了上述想法。对于这两种框架,当λ=0时,所提策略恰好匹配现有的经典估计器;当λ值增加时,所提策略对旧数据表现出更激进的归一化遗忘效应,从而逐步提升估计性能。

英文摘要:

This paper considers a practical scenario where a classical estimation method might have already been implemented on a certain platform when one tries to apply more advanced techniques such as moving horizon estimation (MHE). We are interested to utilize MHE to upgrade, rather than completely discard, the existing estimation technique. This immediately raises the question how one can improve the estimation performance gradually based on the pre-estimator. To this end, we propose a general methodology which incorporates the pre-estimator with a tuning parameter λ between 0 and 1 into the quadratic cost functions that are usually adopted in MHE. We examine the above idea in two standard MHE frameworks that have been proposed in the existing literature. For both frameworks, when λ = 0, the proposed strategy exactly matches the existing classical estimator; when the value of λ is increased, the proposed strategy exhibits a more aggressive normalized forgetting effect towards the old data, thereby increasing the estimation performance gradually.

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。

↑