Universal Motor Control

jrsenent · ‎2004-02-29

Posted on March 01, 2004 at 05:03

jrsenent · ‎2011-05-17

Posted on May 17, 2011 at 10:17

Hi.I've been asked to control the speed of a universal motor and I don't really know what microcontroller I should use.It would be very useful if you could give me some tips on this issue.

Thank you so much guys.

gaetano · ‎2011-05-17

Posted on May 17, 2011 at 10:17

Hi,

I think that you intend to use an angle parzialization phase strategy to modulate the power into the motor.

If yes, what you need is a general purpose 8-bit micro with the following caracteristics:

- one timer to read the speed of the motor by a sensor;

- one timer to turn on the triac properly during one 50/60 Hz mains cycle;

- A/D converter to fix some ext parameters (reference speed, etc.)

There exists a micro , the ST52440, that owns a peripheral managing directly the driving of a triac in phase parzialization.

The Application Notes 'AN1607' e 'AN1221' should help you to develop your control.

Regards,

tanio