I have constructed an inertial dynamometer for 540 (36mm diameter) size electric motors and it seems to mostly function but I am getting an unusual "bump" in my rpm around 5000 rpm. I have tried different ways of controlling the servo signal to my motor speed control and there does not seem to be an…

RPM anomaly in Dynamometer

leongjerland April 17, 2019, 8:09am 5

Is everything well balanced? Mechanical resonance?

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