In the practical application, is the PID controller's parameter fit or not, determines the PID controller obtain the good closed-loop control effect or not.
PID控制器参数整定优劣与否，是PID控制器能否在实际应用中得到好的闭环控制效果的前提。
2
The research implies that the effect is better when the wind machine is open than when is closed, and the velocity in the layer of electricity is fit for requests and its distribution is equal.
试验研究表明：埋管风机和接力风机开启的效果优于关闭时，发电机层风速分布满足要求且分布均匀。
3
The algorithm has more advancements than the method of fitting the curves of explicit functions by BP network, which can not fit the closed curves.