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阐述采用PLC、变频器及触摸屏在门式起重机的控制系统改造设计中的应用,分析其控制系统的主要特点及改造后的使用效果。
The application of PLC, frequency converter and touch screen in the design of the control system of gantry crane is expounded. The main features of the control system and the using effect after the modification are analyzed.