Title :
Unique surface-wound brushless servo with improved torque ripple characteristics
Author :
England, Thomas R.
Author_Institution :
EG&G Corp., Woodstock, NY, USA
Abstract :
A servo system based on a surface-wound slotless brushless servo motor to achieve extremely low torque ripple is described. Torque ripple measurement and specification are discussed; the design was a design made feasible by the introduction of neodymium-iron-boron (Nd-FeB) magnet material. System torque ripple data of less than 1.5% are presented along with the generated back electromotive force of the slotless motor design. It is concluded that with this design brushless servo systems can now be used for high-performance direct-drive grinder and coating applications
Keywords :
servomotors; torque measurement; Nd-Fe-B magnetic material; electromotive force; surface-wound slotless brushless servo motor; torque measurement; torque ripple characteristics; Bandwidth; Brushless motors; Coatings; Feeds; Grinding machines; Machine tools; Magnetic materials; Servomechanisms; Servomotors; Torque measurement;
Journal_Title :
Industry Applications, IEEE Transactions on
