A Study on the Control of an Anchor Auto Drop System for Ship Windlass

In this research, we will perform a basic study to develop an Anchor Auto Drop System for Chain dia. Phi 107mm/G3 (Refloat load 45ton) Windlass model. First of all, to evaluate the control characteristics of the Windlass, we made an analysis model using the commercial software 'Simulation-X'. Then, we analyzed the control characteristics of the Anchor falling speed and used PID control to evaluate the falling speed control. Additionally, we analyzed the desired falling speeds of 2, 3,4 m/s when the Anchor and all chains were a total of 44 tons in weight at 100 m distance. Also, we obtained results of Caliper brake loads and torque changes and we were able to determine that the braking pressure and torque are increased when the load is increased. We analyzed the gear load when the brake is implemented and the Anchor is at 200 m distance and has a total weight of 69 tons. And, for the winch structure design, we obtained a basic design method to develop the auto drop system for a Marine Windlass in terms of the important elements.