Sensorless BLDC Control AN1160B - Microchip Technology
Nov 29, 2011 · proper control necessary, Pulse-Width Modulation (PWM) is used to achieve the right voltage level. PWM is an efficient method of driving the motor, but it intro-duces some noise issues when attempting to acquire the control feedback signals (i.e., BEMF voltages). To summarize, the important relationships for BLDC motors and sensorless control are:
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