Why the detected motor parameters of ST Motor Profile in two boards are different?

[DF_MC]

Hello Everybody,

Here are the software and boards in this case:

1. MC workbench 6.3.2
2. NUCLEO-F401RE/X-NUCLEO-IHM08M1
3.?B-G431B-ESC1

I have an I-PMSM motor, and I use two boards (one is?NUCLEO-F401RE/X-NUCLEO-IHM08M1, and the other is?B-G431B-ESC1) to run the?ST Motor Profile for detecting the motor parameters. However, the motor parameters in the two test results differ significantly. For example, the result from Board 1 (NUCLEO-F401RE/X-NUCLEO-IHM08M1) is shown in picture 1, and the result from Board 2 (B-G431B-ESC1) is shown in picture 2. We can see that the motor phase resistance is 0.23 ohms, the phase inductance is 0.62 mH, and the back EMF constant is 9.32 in picture 1. And we can see that the motor phase resistance is 0.16 ohms, the phase inductance is 0.43 mH, and the back EMF constant is 10.42 in picture 2.

Which result should I trust? Thanks!

[STuser2]

Just for my understanding each board gives the same value every time? i tried to run profiler for one of my motor but was not successful, So, getting another relatively small motor run the profiler and see if it succeeds.