Fuzzy Control of Inverted Pendulum Using LABVIEW

Generally the inverted pendulum is unstable, because the pendulum will fall downward due to the gravitational force acting on mass of the pendulum. Keeping the pendulum at vertically inverted position, the position of DC motor shaft needs to be controlled using closed loop analysis. For closed loop analysis, feedback or input device such as encoder is used. To control and set the pendulum at desired inverted position in LABVIEW, fuzzy control logic was selected. Fuzzy control logic provides the stabilization of pendulum at vertical position without using mathematical approach such as conventional approach. Fuzzy logic control system (FLC) was selected as the control technique due to its ability to deal with nonlinear systems such as inverted pendulum. Special feature of fuzzy logic control is that it controls the physical system.