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arXiv 0905.1825math.OC
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具有时滞和状态约束的微分方程最优控制的HJB方程:正则性及应用

HJB Equations for the Optimal Control of Differential Equations with Delays and State Constraints: Regularity and Applications

Salvatore Federico, Ben Goldys, Fausto Gozzi

摘要:

研究了一类带状态约束的最优控制问题,其中状态方程为时滞微分方程。这门课包括一些经济学中出现的问题,特别是所谓的有时间建立的模型。我们将问题嵌入到一个合适的希尔伯特空间H中,并考虑相关的Hamilton-Jacobi-Bellman(HJB)方程。由于存在状态约束和状态方程缺乏光滑性,这类无穷维HJB方程的研究是困难的。我们关于这样一个HJB方程解的正则性的主要结果似乎是全新的。更精确地说,我们证明了价值函数是连续的一个足够大的开集的H,它解决了相关的HJB方程的粘性意义,它有连续的经典导数的方向上的现在。这个正则性结果是定义经典意义上的反馈映射的出发点,它产生了问题的候选最优反馈策略。验证定理和闭环方程的研究将是即将发表的论文的主题。

英文摘要:

We study a class of optimal control problems with state constraints where the state equation is a differential equation with delays. This class includes some problems arising in economics, in particular the so-called models with time to build. We embed the problem in a suitable Hilbert space H and consider the associated Hamilton-Jacobi-Bellman (HJB) equation. This kind of infinite-dimensional HJB equation has not been previously studied and is difficult due to the presence of state constraints and the lack of smoothing properties of the state equation. Our main result on the regularity of solutions to such a HJB equation seems to be completely new. More precisely we prove that the value function is continuous in a sufficiently big open set of H , that it solves in the viscosity sense the associated HJB equation and it has continuous classical derivative in the direction of the present. This regularity result is the starting point to define a feedback map in classical sense, which gives rise to a candidate optimal feedback strategy for the problem. The study of verification theorems and of the closed loop equation will be the subject of a forthcoming paper.

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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