Of the problems of optimal control, the most important two optimization methods are Pontryagin minimum(or called maximum) principle and Bellman dynamic programming.
在最优控制中，最重要的两种优化方法是庞特里亚金最小值（或称最大值） 原理和贝尔曼动态规划法。
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In this article, we will study the multi-dimensional multistage fuzzy optimal control question, which mainly draw support from the Bellman optimality principle.