Research on an Automatic Adjustment Control System for Small Platform Based on the PLC

Many engineering devices need a platform with high level and position accuracy. An automatic control system is proposed to adjust a small platform that is supported by four height-adjustable legs and two length-adjustable level screws. The control system scheme and working principle are analyzed, then the structure of the control system based on PLC is put forward and the hardware is designed. And then the direction decoupling control strategy is put forward and software of the control system is designed in detail. The device can adjust the levelness and position of the platform quickly, with the man-machine interface of electronic touch screen for status display and parameter setting, the functions of virtual leg detection and limit protection.