calculation of time difference between two crossings of voltage waveforms in simulink

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my project is sensorless control of four switch three phase brushless dc motor drive.to estimate the rotor position i have to compare the voltage waveforms of phase A and B.if we compare two waveforms we get four crossings in one revolution.these crossings show different rotor positions.how can i calculate the timings between two crossings?.i am using simulink.

Answers (1)

Manikandan
Manikandan on 10 Nov 2015

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