矿井提升机与所有的运输设备一样，其工作目标是把被运输物体从原始出发点运输到目的地。因此对控制系统而言，它是一种对被控对象“位置变化”的控制。为保证提升机运行安全、准确、经济、高效，当提升机运行位置变化时，其速度也应作相应的变化。%Just like all transportation equipment, mine elevator is to transport the object from the original place to the target place. So the control system is to control the "change of position" of the controlled object. In order to ensure the safe, accurate, economical and efficient operation of the elevator, when the running position of the elevator changes, its speed should change accordingly.
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