The double inverted pendulum is modeled and the controller is designed by using quadratic optimal control theory to its equilibrium control question.

针对二级倒立摆系统的平衡控制问题，对其进行数学建模，应用二次型最优控制理论设计了控制器。

youdao

In this article, we will study the multi-dimensional multistage fuzzy optimal control question, which mainly draw support from the Bellman optimality principle.

本文主要将借助贝尔曼最优性原理，来研究一下多维多阶段的模糊最优控制问题。

youdao

The question was this: did Congress have the power to control or even ban slavery in the new territories?

VOA: special.2009.03.05

The question is not so much how we control what happens to us but what do we do when we were faced difficult circumstances, and how we can make spiritual meaning even when difficult things happen to us.

问题不是我们能够掌控多少,而是当我们面对困境,能做些什么，我们怎样体现灵性的意义,即便我们面临困境。

普林斯顿公开课 - 人性课程节选

The real question was this: did Congress have the power to control or bar slavery in the territories.

VOA: special.2009.02.26

The genetic-control question that scares people most, however, is germ-line manipulation or, in tabloid parlance, designer babies.

ECONOMIST: A survey of the human genome

And most important, you can't control the question that's asked last.

FORBES: Three Big Myths Of Executive Public Speaking

Whether tighter gun control is the answer is another open question and an even more difficult question is what sort of gun control would be feasible or effective.

FORBES: Killing Pixels: Why The NRA Shooting Range App Won't Make You Violent, But Neither Will 'Call Of Duty'