Comment by SequoiaHope
5 days ago
I used to think this but you can actually drive steppers with FOC (if they have appropriate feedback) and modulate the current based on required torque. It’s open-loop steppers that don’t do this.
5 days ago
I used to think this but you can actually drive steppers with FOC (if they have appropriate feedback) and modulate the current based on required torque. It’s open-loop steppers that don’t do this.
You can do this but it's very difficult; the high pole count means it requires extremely precise and high-speed feedback to get good torque control on a stepper motor.
Yeah ain’t that the truth. This is a problem I’ve been fighting at work lately with a trinamic based system. Trinamic should be good but I see it’s touchy to properly phase align a stepper.