Research on Swing Model and Fuzzy Anti Swing Control Technology of Bridge Crane

A bridge crane is often used in a complex environment and is often subject to the interference of all loads. Some uncertain factors often have an inevitable impact on its swing. So the force situation of the bridge crane during a working cycle is analyzed, and a three-dimensional dynamic mathematical model of the bridge crane is built. Through the simulation analysis of the model under the action of a driving force and wind load, the change law of the swing angle of the bridge crane is studied. Then, the fuzzy control theory is used to determine the control parameter in the anti-sway control process. The position, swing angle deviation, and deviation rate of the bridge crane are taken as the input, and the parameter correction is obtained after the fuzzification by using the center of gravity method. The anti-sway fuzzy control system of the bridge crane is designed and simulated. The research results show that the swing model of the crane is reasonable and the fuzzy PID anti-sway controller can not only improve the adaptability of the control system, but also overcome the large overshoot, quickly restrain the swing, and effectively realize the anti-sway function of the bridge crane.

Automated summary

In this study, a three-dimensional dynamic mathematical model of a bridge crane is developed to analyze the force situation during a working cycle. The change of the swing angle of the crane is studied through simulation analysis under the driving force and wind load. Fuzzy control theory is used to determine the control parameter in the anti-sway control process. The anti-sway fuzzy control system of the bridge crane is designed and simulated. The research results show that the swing model of the crane is reasonable and the fuzzy PID anti-sway controller can effectively realize the anti-sway function of the bridge crane by improving the adaptability of the control system and overcoming overshoot.