Designing of a Flying Boat Height Holder Based of the Fuzzy Controller

This paper presents the investigation are the static and dynamic longitudinal stability of a small flying boat in cruise flight for different cruise heights and speeds. After that, we use two methods to control the height of a flying boat: fuzzy logic controller and its compound with Proportional-Integral-Derivative (PID). The main advantage of using fuzzy controlling methods is that the control system has more flexibility compared with conventional model based controllers. For accomplish designing of height hold control system of a flying boat, we use a precise model of wing-in-groundeffect vehicles in state-space form and aerodynamics derivatives of a flying boat. The controller is tested on a simulation level in Matlab. Simulation results were promising and showed improvement in performance and accuracy in comparison to conventional methods.