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arXiv 1602.02524eess.SYcs.SY
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LQG成本函数的均值和方差

Mean and variance of the LQG cost function

Delft University of Technology(代尔夫特理工大学);Uppsala University(乌普萨拉大学)

Hildo Bijl, Jan Willem van Wingerden, Thomas B. Schön, Michel Verhaegen

AI总结:

本文推导了LQG成本函数的均值和方差的解析表达式,采用Lyapunov方程和矩阵指数两种方法,并应用于减少成本超过阈值的概率。

摘要:

线性二次高斯(LQG)系统已被深入研究,方法用于最小化预期成本是 readily available。关于所得到成本函数的统计特性了解较少。本文的贡献是给出了LQG成本函数的均值和方差的解析表达式。这些表达式通过两种不同方法推导得出,一种使用Lyapunov方程的解,另一种仅使用矩阵指数。考虑了折扣和非折扣成本函数,以及有限时间和无限时间成本函数。推导出的表达式成功应用于示例系统以减少成本超过给定阈值的概率。

英文摘要:

Linear Quadratic Gaussian (LQG) systems are well-understood and methods to minimize the expected cost are readily available. Less is known about the statistical properties of the resulting cost function. The contribution of this paper is a set of analytic expressions for the mean and variance of the LQG cost function. These expressions are derived using two different methods, one using solutions to Lyapunov equations and the other using only matrix exponentials. Both the discounted and the non-discounted cost function are considered, as well as the finite-time and the infinite-time cost function. The derived expressions are successfully applied to an example system to reduce the probability of the cost exceeding a given threshold.

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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