电液比例控制阀使用的证明力反馈改善滞后性，重复性系统和响应。

The electro-hydraulic proportional control valve uses the proven force feed-back system for improved hysteresis, repeatability, and response.

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针对实际控制对象的模型不易建立、大滞后等特点，提出基于内模控制策略的继电型自整定方法。

Aiming at that the actual control object's model is hard to be set up and the features of great lag, a relay feedback self_tuning method based on internal model control is proposed.

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归根结底，这是因为我国风电防雷的标准是滞后的。

Ultimately, this is because of the lightning protection of wind power in China is lagging behind the standards.

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