Options for Brushless Motor Control?

[Ether]

Originally Posted by r691175002

Hi, what kind of options are available for closed loop control of brushless motors in the 60A range.

The only controller I am aware of is by roboteq:
http://www.roboteq.com/brushless-dc-...er-hall-inputs

I have used their brushed controllers in the past with some success but their controllers are a bit large (form-factor wise) for my application. I've also tried looking into brushless servo controllers but there seems to be almost nothing compact.

In the past I have used PID control on standard hobby ESCs but that can hardly be called a solution and a lot of problems arise when trying to reverse or accurately control low speeds.

Questions:

- three phase brushless?

- 6-step or sinusoidal commutation?

- Hall, encoder, or resolver ?

- do you need the commutation done by the hardware or do you have enough processor power to do it in software?

- you said 60A but didn't mention the voltage. Are you talking 12V here?