Hello all,
Colleagues have procured a VESC-based controller and a model motor (drone style outrunner) as a prototype for a mechanical setup which requires the motor to start with a high torque due high friction. Sensorless. It might not be the best suited parts for the setup, but thats whats on my desk now.
I have put the components into operation and watched some YT videos as well as searched and read everything possible on the subject of VESC and starting with high torque.
But questions remain
* Our motor spins from about duty cycle 0.02 - I assume that only then does the back EMF supply enough voltage to regulate it.
* im FEC Mode Just from trying the "45 Deg V0V7 HFI (Silent)" Mode seems to yield good results
* If I block the Motor, the PI Regulator seems to ramp up the current (several seconds), then reach a Limit (Torque is increasing and then high) and restarts rampup --> how to get it to a.) rampup faster [Yes PI controller - but how to get it better without risking to blow the hardware?] and b.) hold the max torque instead of restart rampup at zero
* whats better suited? FOC or BLDC Mode?
* how to choose / calculate better PI regualtor parameters --> whats their scaling --> haven't found any usefull documentation so far
* the lerning motor assistent seems to be able to turn the motor at a much lower speed. I guess its open loop and a fixed sequence rather than measureing the Back-EMF ?
Any tipps welcome as the VESC tool's parameters and their interconnection is not relly intuitive at first.