Motor Torque Assist System Using Constant Torque Springs

Abstract

We propose a system to reinforce motor output with easy control and any duration by winding constant torque spiral spring and releasing the kinetic energy together with the motor. By using constant torque medium, our system can provide stable output and flexible working duration, because motor can wind the spring for any length. To release the energy at arbitrary moment, we equip the system with electrical stopper using pull solenoid and linear spring. The spiral spring is normally fastened by the elastic force of linear spring, and the stopper is released only when the pull solenoid is energized.