Design of container ship autopilot using robust quantitative feedback theory

Abstract EN

This paper describes the design of robust Quantitative Feedback Theory (QFT) autopilot for the course-changing control of a container ship.

The ship model has parametric uncertainties, caused by the variations of hydrodynamic coefficients with the speed of the ship.

Knowing the variation ranges of the model parameters, the QFT method can be used to design the ship autopilot with certain performance specifications.

The autopilot must satisfy the robust stability and tracking performance, for all ship models generated by the parameter variations within the uncertainty region.