Relaibility of BEMF sensoring

keqinwang · ‎2003-10-30

Posted on October 30, 2003 at 11:00

keqinwang · ‎2011-05-17

Posted on May 17, 2011 at 10:16

Can anybody tell what is the diffrence between Hall effect sensor and BEMF control of BLDC in the chance of commutation failure?

I need to deceide which way to go.Sensorless would be better for cost consideration,but how about the relaibility ?

alain239955 · ‎2011-05-17

Posted on May 17, 2011 at 10:16

With a correct design, bemf detection is as reliable as hall effect sensors commutation, I have designs running up to 70000 rpm's where the motor never stalled. sensorless is the way to go