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arXiv 1811.02426math.OC
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一类镇定问题滚动时域控制中终端罚函数的作用

The Effect of the Terminal Penalty in Receding Horizon Control for a Class of Stabilization Problems

Karl Kunisch, Laurent Pfeiffer

摘要:

滚动时域控制(RHC)策略包括用一系列有限时域最优控制问题代替无限时域稳定问题,这些问题在数值上更容易处理。动态规划原理确保了如果有限时域问题用精确值函数作为终端罚函数来公式化,则RHC方法生成最优控制。本文讨论的情况下,终端费用函数被选为截断泰勒近似的价值函数。主要结果是差错率估计的控制产生这样的方法,当与最优控制。所获得的估计是相同的顺序作为所采用的泰勒近似,并减少在指数率相对于预测范围。为了说明这种方法,本文着重讨论了无限维希尔伯特空间中的一类双线性最优控制问题。

英文摘要:

The Receding Horizon Control (RHC) strategy consists in replacing an infinite-horizon stabilization problem by a sequence of finite-horizon optimal control problems, which are numerically more tractable. The dynamic programming principle ensures that if the finite-horizon problems are formulated with the exact value function as a terminal penalty function, then the RHC method generates an optimal control. This article deals with the case where the terminal cost function is chosen as a cut-off Taylor approximation of the value function. The main result is an error rate estimate for the control generated by such a method, when compared with the optimal control. The obtained estimate is of the same order as the employed Taylor approximation and decreases at an exponential rate with respect to the prediction horizon. To illustrate the methodology, the article focuses on a class of bilinear optimal control problems in infinite-dimensional Hilbert spaces.

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