Affine parameter-dependent TS fuzzy controller with application to aircraft roll control

Abstract

The prevalent method of synthesizing nonlinear aircraft control is gain-scheduled linear designs. Although this approach has proven successful in numerous applications, it has distinct limitations for the application to highly nonlinear operating region such as transonic region. Thus the desire to continually improve performance suggests the need for a new design paradigm. This paper presents an alternative gain scheduling method based on Takagi-Sugeno (T-S) fuzzy framework of Parameter-Dependent System (PDS) paradigm to provide more efficient and systematic design techniques. This theoretical development is then specialized to the problem of synthesizing a large envelope roll mode control for a high maneuverable aircraft. Finally the resulting fuzzy gain scheduled controller is demonstrated via nonlinear simulations, and its performance is evaluated relative to that of the conventional gain-scheduled controller.