Motor controller thoughts

A project log for 3D Printed Parametric Motor

Custom electromechanical motor that can be printed using any 3D printer, some coil, maybe magnets and a controller.

SolenoidSolenoid 05/09/2015 at 00:560 Comments

Having a motor is nice and all, but for brushless type motors a controller is needed to make them turn. It doesn't have to be something very fancy, an Teensy and some MOSFETs could easily do the work and then some.

Ideally no sensors would be needed as they can break, are noisy and a hassle to mount and use (compared to doing nothing).

In the case of a synchronous motor back-EMF black magic would be possible to turn on the right couple of transistors on the H-bridge (like it's done with hard-drives). The asynchronous motor doesn't need sensors (another advantage for this motor type) as the stator magnetic field has to be non-synchronous relative to the rotor anyway, but the H-bridge transistor commutation still needs to happen...