讨论了一类脉冲型平稳随机控制模型，给出了其最佳控制存在的充分条件。

This paper discusses a class of stationary impulse stochastic control models, gives some sufficient conditions of the existence of their optimal controls.

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对于由一些工业过程抽象出来的终点命中问题，本文构造了一种随机控制模型。

This paper is concerned with the stochastic control model for hitting the target at end point which is abstracted from industrial processes.

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我们将该问题描述为一个连续时间随机控制模型，通过对价值函数性质的讨论，我们给出了模型的封闭解。

We formulate the problem as a continuous-time stochastic control model. Through analyzing the properties of the expected value function, we derive its close-form solution.

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