Abstract
Many key problems of the control system can be effectively reflected by the inverted pendulum system, such as the problem of nonlinear system, robustness, servo system, stabilization and tracking, etc. Any control problem with whose center is above and fulcrum is blow can be approximate into an inverted pendulum model, so the study of inverted pendulum has important practical significance. In this paper, a two-dimension PI fuzzy controller is adopted using virtual angle to realize the series of two fuzzy controllers. In the end, a simulation is used to feasibility of the designed fuzzy controller.