Hello!
We have a bit of a problem with the Instaspin FOC. We are using a BoostXL DRV8301 Rev.B attached to a F28069M LaunchPad to control a small brushless inrunner motor with 2 poles and rated for 2700KV.
Everything runs perfectly after we estimate the parameters of the motor and we are able to control it very well. However, things change completely if we change the motor with another one of exactly the same kind, same supplier etc. The motors should be identical but apparently Instaspin thinks they are not.
If we change the motor we have to go through the entire estimation phase again. This is not acceptable for normal use as we cannot have the motors taken out of the system in order to run them without a load to get the estimated parameters. It is also very time consuming to estimate the parameters of every single motor.
An option would be to be able to estimate Ls without spinning the motors. Is there any possibility to do this? Or, is there any possibility to control the motors while ignoring Ls?
Any suggestions would be very appreciated.
Thanks,
Colin