Luther (Red) Norris 
Quality Solutions Co. LLC 
Greenwood, Indiana 
Technical Services Committee Member
 
Brushless servo motors are being used in industry for many different applications. However, the primary industrial use for these motors is in automated machinery for the accurate positioning of the work piece or work tool. 

The brushless servo motor will have many features that are different than the standard AC induction or brush type DC motor. Most service centers are familiar with the operation and characteristics of three-phase induction motors and with DC motors with a commutator and brushes. 

The brushless servo motor will usually have a stator winding similar to a three-phase stator with three power leads. It will have a rotor that, instead of an induction squirrel cage rotor or a wound armature, will have permanent magnets that match the number of poles in the stator windings. 

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