对信号进行外延后进行EMD，然后利用掩膜信号对IMF分量进行延拓后再进行希尔伯特变换；

We extend the data before using EMD, and then we extend the IMF based on making signal before using Hilbert transformation.

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然后应用SVR方法对系统效率测试原始数据进行双边延拓，对延拓后的数据信号进行经验模式分解。

The comparison of the test data with measurement data shows that the regression and prediction with the SVR method are highly accurate.

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