There is a need for new actuators in the field of robotics with lower inertia and higher torque which would make the robot lightweight and capable to doing intricate tasks. 

 

 

Currently motors use a gearbox in series to convert high speed to torque which minimizes its torque control capability. 

In the recent years Direct drive and Quasi Direct Drive have shown tremendous potential in Open Loop Torque Control by minimizing the weight by a lot. But still, to achieve a high torque we are using in using a