1522

Item 1522

OTHER: Electrical - Control - Sensor - Position:

For overview see 'Permanent Motor Magnet Technology', Section 6.7

Hall Effect Sensor: To eventually be move to a lower level Item page.

Detects electrical azimuth, not mechanical azimuth.

60-degree v.s. 120-degree:

For 60 degree spacing all three hall sensors face in same direction,
For 120 degree the middle hall sensor is facing opposite way.

To change 120degree motor to 60 degree and vice versa flipping middle hall sensors around 180degrees ( upside down or back to front however you like to look at it ) is all that needs to be done. Very useful for matching controllers if controller is not easily adjustable between 60/120 degrees

Wikopedia
Theory and Application

Encoder: To eventually be move to a lower level Item page.

Incremental:

Absolute:

Resolver: To eventually be move to a lower level Item page.

Sensorless: To eventually be move to a lower level Item page.

Sensorless control methods increase electronics complexity but improve reliability and allows the motor to operate at elevated temperature. [Source ~ PMMT p.297]
Simplified Sensorless Control for BLDC Motor, Using DSP Technology Have copy on E: drive.

AVR440: Sensorless Control of Two-Phase Brushless DC Motor Have hard copy.

Sensorless Control of a Brushless DC motor using an Extended Kalman estimator.

Much more information on the net.

"Sensorless control methods increase electronics complexity but improve reliability and allows the motor to operate at elevated temperature." [Source ~ PMMT p.297]

Last Revised: May 30, 2011