FUZZY CONTROL DESIGN FOR A TWIN ROTOR MULTI-INPUT MULTI-OUTPUT SYSTEM (TRMS)

Abstract

This paper presents the designing of fuzzy logic controller for a twin rotor multi-input-multioutput system (TRMS). The control objective is to make the beam of the TRMS move quickly and accurately to the desired positions, i.e., the pitch and the travel angles. Developing controller for this type of system is challenging due to the coupling effects between two axes and also due to its highly nonlinear characteristics. In this investigation accurate dynamic models of the system for both vertical and horizontal movements are developed so as to get very similar responses to that of the real plant. These models are then used as test-beds to develop a set of fuzzy controllers. The performance of the controllers in tracking movements in both vertical and horizontal planes is found to be very satisfactory. A comparative performance study of this fuzzy control approach with respect to a single PID approach is also presented in this study