该方法首先利用平衡降阶法对结构进行降阶，然后在模态空间中采用LQG 控制策略对结构进行控制；
The model reduction is first carried out by balanced reduction method, then LQG control strategy is used in modal space for control design.
控制律采用线性二次型高斯(LQG)方法，结合平衡截断法降阶。
The controllers are designed by linear quadratic Gaussian (LQG) method truncated by a balanced truncation method.
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