是提升机的电子控制设备，主要动力提供设备。
分析了王晁煤矿提升机电控存在的主要问题，介绍了改进方法和效果。
The paper analyzes some main problems existed in electric control of the A. C. winder in Wangchao coal mine and introduces the improving way and effects.
绕线式异步电机采用转子回路串电阻调速广泛应用于我国工矿企业的提升机电控系统。
Wound-rotor induction motors that adjust speed by connecting resistors in series to rotor circuit have been easily found in the electrically controlled systems of shaft hoist.
本文介绍了由PLC构成的提升机电控系统的特点，并通过应用实例，探讨了PLC应用中的问题。
The paper introduces the characteristics of the electric control system composed by PLC, and probes into the problems of PLC application through applied examples.
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