我国提升机设备有直流拖动和交流拖动2种,而交流拖动的提升机数量占大多数,并普遍使用 TKD和 JKM 系统,这种控制系统是采用继电器和接触器实现有触点的逻辑控制,以磁放大器为核心组成模拟量可调闸闭环系统。几十年来,这种电控系统由于受元器件水平的限制而存在诸多缺陷,突出表现在:使用大量继电器、接触器及其它分离电器元件,故障率高,可靠性差;采 There are two kinds of hoisting equipment in our country, including AC and AC drives, and the AC hoisting machines account for most of them. TKD and JKM systems are commonly used. The control system uses contacts and relays to make contacts Logic control, with magnetic amplifier as the core component of the analog adjustable gate closed loop system. Decades, this electronic control system due to the limitations of the level of components there are many shortcomings, outstanding performance: the use of a large number of relays, contactors and other electrical components separate, high failure rate, poor reliability; mining