The system controls four axial flow fan which mounted in the bottom of the pendulum in order to make the wind pendulum move 32 bit MK60DN256ZVLL10 microcontroller is used as core; position of wind pendulum placed in three-dimensional space is measured through motion processing sensor MPU6050. There is a laser pointer under the wind pendulum. The wind pendulum can do linear or circular motion according to the feedback value and trigonometric functions computation with two independent PID algorithm. The PID algorithm can make the wind pendulum when it is disturbed by 50

60 W FANS recovery circular motion within 5 s. Experimental results show that the wind pendulum completes predetermined linear motion with trajectory errors less than± 0. 5 cm with

in 15 s and circular motion within diameter ± 2. 5 cm

within 20 s.