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Hi Emontlo,
thanks for the suggestions. The situation is the load in unbalanced. Gravity accelerates the rotor/load each half revolution, then for the other half it fights against gravity. I was using unipolar drive so this resulted in a speed ripple, the loop let go when the motor accelerated...
Hi, I have a 3 ph BLDC motor using 6 step commutaion with trapezoidal bemf. I need to be able to control it in the 4th quadrant. It will have a load that will cause it to accelerate and deccelerate at the same frequency that it is spinning, hence the need for 4 quadrant control. The problem is I...
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