Design and study of leg automatic leveling control system of military bridge

Against the shortages as low precision and long operating time of traditional leg leveling method of military bridge, design automatic leveling control system for bridge with four legs. First establish the leg leveling space model of the bridge, analyze the relationship between the leg regulated quantity and the horizontal regulated angle, and design automatic leveling control system based on “high point chase” leveling scheme. Then establish SIMULINK simulation model of leg automatic leveling control system based on adaptive fuzzy PID algorithm. The simulation experiment results demonstrate that the leveling algorithm and automatic leveling control scheme are correct and feasible, and could improve the leg leveling speed, accuracy and automation level of military bridge equipment.