Jun Kang, Ph.D, Yaskawa Electric America
Articles
IIoT, Industrie 4.0 April 1, 2010
Sensorless Control of Permanent Magnet Motors
Precise speed control of AC motors is typically accomplished with a variable frequency drive (VFD) connected to a speed or position feedback sensor. In certain situations, however, it's possible to achieve a similar level of precision speed control without the need for a feedback sensor via the high frequency signal injection method.
By Jun Kang, Ph.D, Yaskawa Electric America