Sensored and sensorless brushless

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02-13-2009 | 02:30 PM

#16

silverhkswrx

Tech Fanatic

iTrader: (10)

Joined: Dec 2008

Posts: 988

From: Tampa, Fl.

Quote:

Originally Posted by wick3dr00st3r

What do you guys mean when you say "Cogging"? Are you referencing that the motor stutters upon accelerating?

Also, why would a motor "Cog"?

+1.

02-14-2009 | 12:21 PM

#17

Piimpslap

Tech Apprentice

iTrader: (5)

Joined: Jan 2008

Posts: 96

From: SoCal

Quote:

Originally Posted by wick3dr00st3r

What do you guys mean when you say "Cogging"? Are you referencing that the motor stutters upon accelerating?

Also, why would a motor "Cog"?

Yes, but also includes changing directions, early sensorless systems couldnt handle trying to accelerate in forward from a rolling reverse or sometimes even coasting. Basically the motor is trying to determine the rotor's position.

But the biggest bane of any brushless system is poor batteries, or connectors. Because the system is being choked off from the current it wants.