You can drive a pm motor with switching frequency. Speed setpoint in rpm divided by number of poles divided by 60 gives you switching frequency in hertz.

PM And Brushless-DC Motors/Gearmotors Aug. 23, 2007 Incodermotors, available as permanent-magnet dc and brushless-DC motors and gearmotors, are equipped with encoders right inside the motor.

Electric motor and fractional horsepower gearmotor manufacturer Bison Gear & Engineering Corp. (www.bisongear.com), St. Charles, Ill., announced on May 3 that it has acquired the brushless DC (BLDC) ...

Electric motor and fractional horsepower gearmotor manufacturer, Bison Gear & Engineering Corp. has acquired the brushless DC (BLDC) electric motor business of Von Weise of Canada Company. The product ...

The new 34-frame AUTONOmotor gear-motors eliminate position sensors and wiring. The new 34-frame AUTONOmotor gear-motors eliminate position sensors and wiring. The sensorless brushless dc (SBLDC ...

The low-voltage brushless dc STM motors are available in three frame sizes (45, 65, and 75 mm) with powers up to 530 W and can be easily integrated with existing design slew drives, pan and tilt ...