This means the program statements executed in the loop body must change the value of the expression — or else the loop will never end.

这意味着循环体中执行的程序语句必须要改变表达式的值，否则循环将无法结束。

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Then, this thesis applies IP control algorithm to change controller in outer loop but not in inner loop based on basic double closed loop control system.

然后，本文在传统双闭环控制的基础上，内环的控制算法不变，改变外环控制器的设计算法，主要采用IP控制方案。

youdao

Then, this thesis applies IP control algorithm to change controller in outer loop but not in inner loop based on basic double closed loop control system.

然后，本文在传统双闭环控制的基础上，内环的控制算法不变，改变外环控制器的设计算法，主要采用IP控制方案。

youdao