unstable loop height 不稳定环高
unstable loop width 不稳定环宽
open loop unstable 开环非稳定性
unstable open-loop systems 开环不稳定系统
open-loop unstable poles 开环不稳定极点
open-loop unstable systems 开环不稳定系统
Automatic regulation must be added owing to the unstable characteristics of the open loop secondary system.
由于二次调节的开环不稳定特性，必须为其设置自动调节系统。
But the learning period of opened-loop iterative learning control is long, and the unstable and high gain phenomena may be taken place during the initial stage of iterative learning control.
开环迭代学习控制学习周期长，在迭代学习的初期容易出现不稳定和高增益的现象。
An unstable process is transformed into a minimum-phase system through mirror-injection, then solve the robust controller using closed loop gain shaping algorithm.
通过镜像映射将非稳定过程转换成最小相位系统，然后用闭环增益成形算法求解鲁棒控制器。
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