On the interval type-2 fuzzy logic control of ball and plate system

A simple interval type-2 fuzzy gain scheduling controller is designed for the stabilization and reference tracking of ball and plate system. The controller employs plate angles as the premise variables for gain scheduling and its stability is guaranteed through a set of linear matrix inequalities. MATLAB simulations are performed to validate the proposed controller where it is also compared with pole placement and type-1 fuzzy logic controllers. It is shown that the proposed controller has better response and disturbance rejection capability and is robust to measurement noise and errors.