资料介绍
Brushless Direct Current (BLDC) motors are gaining pop-ularity and larger market acceptance. BLDC motors are used in industries such as Industrial Automation Equip-ments, Consumer, Medical, Automotive, Aerospace and Instrumentation. BLDC motors do not use brushes for commutation; instead, they are electronically commu-tated. Commutation is the process of activating current fow through the appropriate stator phase windings to produce an output torque.
Commutation of a BLDC Motor with Various Pole-Pairs
Can Be Simplified By Using Absolute Encoder Feedback
White Paper
Author
Sithambaram Palaniappan
Avago Technologies, Malaysia
Abstract
Brushless Direct Current (BLDC) motors are gaining pop- However, these encoders have some limitations and
ularity and larger market acceptance. BLDC motors are drawbacks. Hall sensors detect movement of the com-
used in industries such as Industrial Automation Equip- mutation magnet while the optical commutation encoder
ments, Consumer, Medical, Automotive, Aerospace and senses the movement of the codewheel. The commuta-
Instrumentation. BLDC motors do not use brushes for tion magnet pole pair and codewheel track patterns are
commutation; instead, they are e
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