A Novel Control System of Ship Fin Stabilizer Using Force Sensor to Measure Dynamic Lift

For improving the control system of traditional ship fin stabilizers, this paper presents a novel control system to solve the deviation of system feedback by using dynamic lift. However, the difficulty of lift feedback control is lift measurement technology. Thus, the lift sensor is designed using Spoke-type structure and Wheatstone bridge-type strain conversion circuit. The design of compensation resistors is adopted in the circuit, which effectively reduces the effect of temperature on zero drift and sensitivity for the lift sensor. In addition, the mechanical decoupling method of fin hydrodynamic force and the lift measurement method based on double bearing load are proposed. In addition, then, the control system of ship fin stabilizer is improved in order to solve the main technical problems. Finally, the experimental results demonstrate that the designed sensors meet the requirements of lift measurement. In addition, the simulation results of the ship at different situations show that the effect of roll stabilization (86.803%-93.858%) is improved effectively.