In the field of modern power driving, the adjustable speed control of AC asynchronous motor by inverter is a hot spot because of its notable energy saving function and continuous variable speed.

Control Techniques variable frequency drives provide continuous control, matching motor speed to the specific demands of the work being performed.

Then on the assumption that the motion form of high speed landslide is continuous and variable, the kinematic block model of long run out prediction for high speed landslides is presented.