在一次实验中的某个精确时刻，谐振器可能同时处于其放大和收缩状态；一次单一测量迫使其“选择”处于何种状态。
At a precise moment during one trial, the resonator might be both in its expanded and its contracted state; a single measurement forces it to "choose" which state to be in.
针对这种不足，选择现代控制理论中的线性状态反馈控制方法，采用了线性二次型最优控制器设计方案。
In order to resolve the shortage, the thesis chooses the linear quadratic form optimal controller design scheme by applying linear state feedback control of the modern optimal control theory.
根据系统参数，在二次型指标中适当选择状态加权矩阵q可以将LQ问题的状态反馈解表成输出反馈的形式。
Choosing the proper state weight matrix Q in the LQ index by the system parameters, we can express the state feed-back solution of the LQ problem in the form of the output feedback.
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