介绍电涡流传感器的工作原理，以及传感器线性测量范围及灵敏度与线圈参数的关系。

The operational principle of electric eddy transducer and the relationship between linear measuring range and sensitivity of transducer and coil parameters are introduced.

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相关维数是定量描述非线性时间序列的一个重要参数，在脑电、心电等生物医学信号的特征描述方面得到了广泛地应用。

Correlation dimension is an important parameter to measure a nonlinear time sequence quantitatively, and it is widely used to analyze biomedical signal, such as EEG and ECG.

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针对电液伺服速度系统的非线性和参数时变特性，提出了模糊增益调度控制方法。

Considering the nonlinear and the parameters variability, which vary widely with the working condition in the electro-hydraulic servo velocity system, fuzzy gain scheduling controller was developed.

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