这种单变量控制方式不能有效地改善系统的动态品质和提高系统的稳定水平。

This singer variable control mode can not effectively improve system dynamic quality and raise system stable level.

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所设计的多变量内模控制器能使系统稳定解耦，所得到的闭环系统根据开环系统时滞来描述。

All the stabilizing IMC controllers and the resulted closed-loop systems were characterized in terms of the open-loop system's time delays.

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实验结果表明：改变反馈控制的增益和相位角两个变量，能影响主动颤振抑制系统的稳定性。

The test results show that a change in two parameters-the gain and the phase Angle of the feedback control-will have an effect on the stability of the active flutter suppression system.

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