Donut Labs’s curious design—which looks like an empty metal cylinder with tapered edges—could mark a pivotal moment for EV ...

(Credit: Cookie Robotics) The choice for a PM rotor in this particular stepper motor is likely due to simplicity, while also providing decent torque when moving as well as when unpowered.

Big promises, but the Donut Motor's horsepower, along with an incredible quoted torque output of 3,171 lb-ft, is an amazing feat. It would make it far more power and torque-dense than anything ...

Integrate the motor to a machine, based on analysis of motor equations for voltage, current, torque and speed. Implement the motor and accompanying rotary sensor into a motor control circuit in both ...