The control aim is accomplished by changing the speed of the motor according to the frequency and running steady.

实验结果实现了电机的变频调速，且速度稳定，达到了论文提出的控制目标。

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This is of important theoretical and practical meaning for optimizing operation parameters, making boiler running steady and safely with high-efficiency.

这对优化生产过程中操作参数，使锅炉实现高效、安全、稳定运行具有重要的理论与实践意义。

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This paper presents a nonuniform slap door, whose top hinge refrains from impact when the door is opened and the head loss of the water is zero when the door running steady.

本文提出一种新的非均质拍门，可使拍门在启门时顶铰免受冲力，在稳定运行时拍门水头损失为零。

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This paper presents a nonuniform slap door, whose top hinge refrains from impact when the door is opened and the head loss of the water is zero when the door running steady.

本文提出一种新的非均质拍门，可使拍门在启门时顶铰免受冲力，在稳定运行时拍门水头损失为零。

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