Brushless Motor Info

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• Brushless DC Motors
  . The situation has brought a large number of competitors into the market, helping to reduce prices for brushless systems. A result is that brushless motor sales have risen rapidly in the last few years. And sales of brushless motors continue to increase. come in a variety of configurations. The most...
• Reducing cogging torque in brushless motors
  Brushless dc motor windings are similar to the windings in a multiple-phase ac motor. But brushless motors also contain a permanent --magnet rotor and a sensor to detect the rotor position to produce signals that control electronic switches for commutation. The most common position sensor...
• Optimizing dc-brushless servomotors
  , TM of an optimized brushless-dc motor, based on geometry only, is fixed. However, the amount of copper windings filling the stator slots changes the mechanical time constant. More windings, as would be used in higher quality motors, increase the motor constant independent of geometry and therefore...
• Brushless washer maker finds reliability in screwless connections
  in brush-free technology so we only use the most reliable components," Escalante adds. The wash system, based on a Lonworks architecture, monitors inputs from sensors and manages heaters and vector drives for ac synchronous motors. In addition, they send data over. Brushless washer maker finds reliability...
• DC Motors
  power circuit switching. And dc motors respond quickly to changes in control signals due to their high ratio of torque to inertia. Motor types: Wound-field dc motors are usually classified by shunt-wound, series-wound, and compound-wound. In addition to these, permanent-magnet and brushless types...
• Sizing up BLDC motors
  AXH-Series brushless dc (BLDC) motors from Oriental Motor are only 1.65-in. thick, about half the size of comparable ac speed-control motors, and provide up to 50 W of power. AXH-Series BLDC motors maintain constant torque at speeds ranging from 100 to 2,500 rpm. Proper motor sizing is important...
• Limited-Angle Torque Motors
  to those used for conventional brushless motors. Motor performance is determined with an identical set of equations. Limited-angle torquers are currently available in ratings from 2.8 to 1,000 oz-in. The 2.8 oz-in. LAT, a two-pole motor, has a 90 excursion angle. Its stator is 0.7 in. in diameter...
• PM DC Motors
  than ordinary ones having comparable dimensions. This allows a smaller rare-earth motor to do the job of a more expensive and larger conventional unit. The typical range of torque for both brush-type and brushless dc motors is from 7.0 oz-in. to 4,500 lb-ft. Rare-earth magnets have little rotor...
• The "no-cog" motor
  Brushless dc motors without wire windings rotate smoothly with practically no cogging or torque ripple. This ThinGap motor uses a slotless BLDC design that virtually eliminates velocity and torque ripple from cogging action. The unconventional rotor design also led to its unconventional mechanical...
• Power and efficiency drive motor selection
  . In the case of dc brushless and brush-type motors, the first step determines the motors' power output from Most catalogs list the motor's output power, so matching the results of the calculation to an available motor is straightforward. The second step determines the motor efficiency, represented...

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