At the same time using Holzer sensors will be converted into pulse frequency motor speed feedback to the MCU, realize the speed closed-loop control, to achieve speed detection.

同时利用霍尔传感器将电机速度转换成脉冲频率反馈到单片机中，实现转速闭环控制，达到转速检测目的。

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It is proved by experiment results that rational design and strict technics control play important roles for shortening the turn-on time of high frequency thyristor effectively.

而实验结果证明只要设计合理，工艺上严格控制，就可有效地缩短高频晶闸管的开通时间。

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Compared with conventional fuzzy control methods, this method is effective to shorten the waiting time, decrease the startup stop frequency and reduces the power loss.

与常用的模糊控制方法相比，该方法可使候梯时间缩短，电梯起停次数减少，能源损耗降低，实际应用效果良好。

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