Abstract: The centrifugal clutch to add power with hydraulic pressure and electromagnetism is introduced. The operation principle is explained. The calculation formulas of output force and driving torque, joint angular velocity and joint speed, rated angular velocity and rated speed and maximum load of spring are presented. The structure of this clutch is compact. It can greatly improve the abilities of driving torque, synthetically considering designing clutch. Leave the function of clutch under the comprehensive consideration of equipment’s computer control system as a small system. To realize the best starting time and starting second under its auto-control, according to the need and working state of the equipment, is the manufacturing and developing direction.

Key words: Centrifugal force, Clutch, Control by computer, Force amplifier with lever and hydraulic, Pressure electromagnetism Weight, Small system