The pendulum control experiment is a highly non-linear automatic control system designed by the company. It is based on internet, automatic control, computer real-time control and object-oriented programming. It is an ideal automatic Control teaching experimental equipment, it can enable students to master the PID control algorithm in the control of the parameters of the impact. System stability, control and many other abstract control concepts, through the pendulum experiment intuitive, vividly demonstrated to meet the requirements of automatic control course teaching. At the same time, the secondary interface reserved by the system enhances the scalability of the system, providing a good platform for users to develop and verify other algorithms.