Abstract:With the development of world trade, overhead crane plays an important role increasingly. At the same time, overhead crane anti-sway technology is also a growing concern. In order to analyze the characteristics of the overhead crane system and provide a reference for theoretically verifying and studying the stability and effect of various control methods, the model considers the influence of the motor on the nonlinear system of the overhead crane during the establishment. Besides, the motor, trolley and the load part were analyzed, studied, modeled and simulated respectively. As a result, the complete physical and mathematical models of the overhead crane anti-sway control nonlinear system were established, and a complete description of the motion characteristics of overhead crane system was realized. The Matlab is used to simulate the motor, trolley and load part, as well as the open-loop and closed-loop of the nonlinear system of the overhead crane. The simulation results verify the characteristics of the motor, trolley, and load part, and prove the correctness of the model, providing a theoretical reference for studying the nonlinear system of overhead crane anti-sway control.