A comparative study between sliding mode and proportional integrative derivative controllers for ship roll stabilisation

The sliding mode control (SMC) design for roll reduction of a ship has been addressed. The SMC technique yields the appropriate control with significant roll reduction compared with other controllers such as proportional integrative derivative (PID). The system comprises of three different controllers, fin-roll, rudder-roll and autopilot. Consequently, for each situation along the ship trajectory, the triple controllers need to be designed. It is not necessary to have the same controller structure for all three subsystems. This paper compares SMC controllers individually with PID controllers for ach subsystem, and demonstrates the results of the implementation of controllers with different structures when applied to the entire roll reduction system.