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arXiv 0903.0405math.OCmath.APmath.DSmath.OA
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时变微分Riccati方程基本解的极大加表示

Max-Plus Representation for the Fundamental Solution of the Time-Varying Differential Riccati Equation

Ameet Deshpande

摘要:

利用最优控制、对偶理论和\maxp代数,导出了时变系数矩阵微分Riccati方程(DRE)解的统一表示.它是基于一个特殊情况下的\maxp基本解,首先提出了\cite{FlemMac}。这种基本解可以将二元DRE的特解推广为通解,并且可以从任意初始条件出发解析求解DRE。本文还证明了在固定的对偶核下,一个DRE解的双凸对偶满足另一个对偶DRE,其系数满足包含Hamilton和某些辛矩阵的矩阵相容条件.对于时不变DRE,这允许我们使对偶DRE线性化,从而解析地求解原始DRE。本文还推导出各种核/对偶关系之间的原始和时移对偶DRE,从而导致一系列的DRE解决方案。其中一种方法的时不变模拟首先在\cite{Funda}中提出。

英文摘要:

Using the tools of optimal control, semiconvex duality and \maxp algebra, this work derives a unifying representation of the solution for the matrix differential Riccati equation (DRE) with time-varying coefficients. It is based upon a special case of the \maxp fundamental solution, first proposed in \cite{FlemMac}. Such fundamental solution can extend a special solution of certain bivariate DRE into the general solution, and can analytically solve the DRE starting from any initial condition. This paper also shows that under a fixed duality kernel, the semiconvex dual of a DRE solution satisfies another dual DRE, whose coefficients satisfy the matrix compatibility conditions involving Hamiltonian and certain symplectic matrices. For the time invariant DRE, this allows us to make dual DRE linear and thereby solve the primal DRE analytically. This paper also derives various kernel/duality relationships between the primal and time shifted dual DREs, which leads to an array of DRE solutions. Time invariant analogue of one of these methods was first proposed in \cite{Funda}.

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