由于供水过程可近似认为是一个一阶时滞系统，系统采用了自整定模糊pid对管网的压力进行实时控制。

The water supply process is approximately a system of time lag of first order, real time control of pressure in pipe is adopted self-tuning fuzzy PID.

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隧道通风过程可近似认为是一个一阶时滞系统，系统采用自整定模糊pid对隧道管网的风压进行实时控制。

Tunnel ventilation process is approximately a system of time lag of first order, real time control of wind pressure in tunnel pipe is adopted self-tuning fuzzy PID.

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一阶加纯滞后或二阶加纯滞后，并且提出了时滞系统的模型参考自适应控制的设计方法。

And a design method of model reference adaptive control for system with pure lag is presented.

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