2004-02-29 08:03 PM
2011-05-17 01:17 AM
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.2011-05-17 01:17 AM
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