Agile gets patent for noise reduction in motors
An
Agile Systems product story
Edited by the Engineeringtalk editorial team
Feb 6, 2007
Agile Systems has been granted the first in a series of five patent applications for control of electric motor products by the US Patent and Trade Office (USPTO).
Agile Systems has been granted the first in a series of 5 patent pending applications for control of electric motor products by the US Patent and Trade Office (USPTO).
This initial patent covers the removal of the noise induced by the motor allowing a clean back EMF signal, which then is used to obtain optimal commutation.
When the clean back EMF signal is used with Agile's sensorless algorithm the results are 100% start up reliability and improved low speed control.
Chris Butlin, Agile Systems VP of Engineering noted: "this new breakthrough technology will allow for more robust running of the motor, increasing motor speed and efficiency".
"Permanent magnet motors that induce a lot of noise from saliency can greatly benefit from this technology by being able to acquire a clear back EMF signal where formally this saliency would contaminate the back EMF signal".
This new technique has improved Agile's sensorless technology and has opened up applications that were not practical with traditional sensorless control.
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