Baed on the ionosonde data, we used an empirical method to derive the neutral meridional wind during tile storm.

采用一个半经验模式利用垂测数据计算了磁暴效应引起的有效热层子午向中性风。

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Baed on the Robust tuning method of conventional PID controller, a new on-line PID self tuning method is put forward.

在常规pid控制器的控制参数的鲁棒整定法基础上，提出了一种新的PID在线整定改进方案。

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