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。
For distributed structures, the closed loop performance of the control system might be badly reduced without considering the spillover, and is likely to become unstable.
对无穷维分布参数结构，依据有限维降阶模型设计控制器会导致系统闭环性能变差，并有可能使系统失稳。
Magnetic bearing control system is an equipment involved electromagnetic, control theory, mechanical theory, rotor dynamics and other subjects of the complex non-linear open-loop unstable system.
磁轴承控制系统是一个涉及了电磁学、控制科学、机械科学以及转子动力学等多门学科的复杂非线性开环不稳定系统。
The existence of actuator saturation can debase the system dynamic performance, lead the closed-loop systems to an unstable state, and have a strong impact on system normal operation.
执行器饱和将使系统的动态性能降低，甚至导致闭环系统不稳定，严重影响系统的正常运行。
Also, it is well known that it is difficult to get good closed-loop step responses for processes with resonances, integrators and unstable plant transfer functions.
众所周知，当一个过程具有共振态、积分电路及不稳定设备传递函数的特点时，同样很难得到较好的闭环步进回应。
Also, it is well known that it is difficult to get good closed-loop step responses for processes with resonances, integrators and unstable plant transfer functions.
众所周知，当一个过程具有共振态、积分电路及不稳定设备传递函数的特点时，同样很难得到较好的闭环步进回应。
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