Novel Control Method for Overhead Crane's Load Stability

Abstract

Nowadays, cranes are widely employed in many fields of the industry and its utilization represents a large financial influence. The investment on cranes, for example, on docks are mainly associated with the time required for the positioning of the cargos. The objective in this experiment was to develop the control of a system to minimize the stabilization time of a load swinging due to crane movement using a controller created from a Lyapunov function. A metal structure was used with a pendulum, attached to a linear motor. After the controller was designed and implemented a series of experiments were done in varied conditions of mass and signal input. The system can be moved at high speed with the joystick and a trigger is pressed to quickly stabilize the pendulum. This, compared to the traditional methods of controlling this payload oscillation has made evident that the control method associated to the use of a joystick can reduce the loading time and also eliminate the need of a highly experienced driver operating the crane.

Training Simulator for Acquiring Operational Skill to Operate Overhead Traveling Crane while Suppressing Load Sway

“…However, the load is prone to swaying due to suspending mechanism. is load swaying disturbs the precise positioning, and there is a risk of its collision with other objects on the factory floor [1][2][3]. erefore, in the operation of an overhead traveling crane, one of the basic skills is the suppression of load sway.…”

Dynamic analysis of the rope-sheave system of polar crane for nuclear power plant

“…At present, there are many researches about cranes. Some studies 1–3 focused on the control of the load deflection, while some studies 4–6 discussed the dynamic responses of the crane structure. These studies solved many problems about the operation schemes and structural design of the crane.…”

Equilibrium path and load trajectory deflections for polar cranes in nuclear power plant

“…At present, there are many researches about cranes. Some studies [1][2][3][4] focused on the control of the load deflection considering the trolley moving while the crane hoisting or lowering, while some studies [5][6][7][8] discussed the dynamic responses of the crane structure. These studies solved many problems about the operation schemes and structural designs of the cranes.…”