Thread: Discussion back emf waveform explanation View Single Post
 May 28, 2012, 12:29 PM Registered User Russia Joined Dec 2011 12 Posts Try to integrate BEMF wave shape to find out the magnetic flux wave shape. This is because of the following equation that links flux and emf. $E=L{d\Phi \over dt}$ Flux wave shape is dependant of mechanical desing (winding laying, bevel, etc.) of the motor. However, I have never seen anything like a trapezoidal BEMF of real motor. There was a topic about this question here (but no answers). That topic - http://www.rcgroups.com/forums/showthread.php?t=1645446 Also, paper almost on topic - web.mit.edu/scolton/www/SCThG.pdf Sorry for my English Roman Last edited by amaora; May 28, 2012 at 12:52 PM.