Interesting. Are the two sine waves being fed to the drive 120 degrees out of phase or something similar?
So does the sine wave amplitude ramp up according the motor speed? Dave On 1/23/2016 12:55 PM, Marius Alksnys wrote: > Spindle motor is, as written on the nameplate, High-performance > induction motor - or three phase asynchronous motor in other words. > > As drive power stage takes two analog voltages as phase current commands > (third one is "calculated" inside), I am feeding them with sine signals, > calculated by custom HAL component, using 7i77 analog output channels. > > Resolver is mounted on the rotor. Resolver signals are converted to > quadrature by original VFS electronics and then fed to 7i77 encoder > input. This is how I have accurate position and speed feedback. > > 01/23/2016 07:42 PM, Dave Cole rašė: >> Are you using an encoder to commutate the motor? Or just firing the >> windings in order? >> Is the original motor a regular induction motor or some brushless AC, >> brushless DC motor variant ? >> >> Dave > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
