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Back EMF method detects stepper motor stall: Pt. 1—The basics

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K.Brown
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
K.Brown   5/4/2012 10:29:51 PM
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Is there any explanation of how the current profile lookup table works that someone could point me towards? I have read the entire datasheet 1.5 times ;) It gives no hint as to what values to fill the registers with. Thanks

MrDave
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
MrDave   11/22/2011 6:39:11 PM
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Thanks

arashv60
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
arashv60   11/3/2011 8:53:55 AM
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very good article,

Saminathan
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
Saminathan   11/1/2011 7:30:23 AM
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Very good and informative article

David Ashton
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
David Ashton   10/29/2011 9:43:56 AM
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If anyone else is interested, the full diagram for fig 2 is Fig 7 in the L9942 data sheet at http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00072898.pdf

David Ashton
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
David Ashton   10/29/2011 9:26:57 AM
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Nice article, but would it be possible to put in a link to the full figure 2 diagram...the 2 parts are different scales and not easy to stitch together.

prabhakar_deosthali
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
prabhakar_deosthali   10/29/2011 8:57:53 AM
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A very informative article . The graphics are superb. I believe this back EMF is also used in brush less DC motors in a sensor less commutation control.

Robotics Developer
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re: Back EMF method detects stepper motor stall: Pt. 1—The basics
Robotics Developer   10/28/2011 5:00:08 PM
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A good article with nice details! Thanks. I really liked the graphics and the text overlays that expand upon what we are seeing. It looks like a rational approach that is both economical and well thought out. I wonder now how I can use this in other applications..

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