Part Number:DRV8301-69M-KIT
Hi,
In my project I am using the Rs_Online calculation as temperature sensor for the motor. I did this as desribed in chapter 15.2 of the instaspin guide.
The problem is, that the Rs calculation doesn't seem te to trustworthy.
At times the calculation is correct and provides me with a steady and correct temperature, but the Rs value keeps spiking and dipping.
With my Rs offline begin arround 0.72 ohms, the Rs_online dips and spikes to 0.24 ohms and 1,17 ohms (resulting in -150 degrees C and + 177 degrees C). These spikes last for several seconds, so I can't filter it by taking multiple samples.
Any suggestions on how i can get a stable reading from Rs_online?
Thanks,
Alain