Breaking News
Comments
Newest First | Oldest First | Threaded View
K.Brown
User Rank
Rookie
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
K.Brown   5/4/2012 10:29:51 PM
NO RATINGS
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
User Rank
Rookie
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
MrDave   11/22/2011 6:39:11 PM
NO RATINGS
Thanks

arashv60
User Rank
Rookie
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
arashv60   11/3/2011 8:53:55 AM
NO RATINGS
very good article,

Saminathan
User Rank
Rookie
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
Saminathan   11/1/2011 7:30:23 AM
NO RATINGS
Very good and informative article

David Ashton
User Rank
Blogger
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
David Ashton   10/29/2011 9:43:56 AM
NO RATINGS
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
User Rank
Blogger
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
David Ashton   10/29/2011 9:26:57 AM
NO RATINGS
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
User Rank
CEO
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
prabhakar_deosthali   10/29/2011 8:57:53 AM
NO RATINGS
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
User Rank
Rookie
re: Back EMF method detects stepper motor stall: Pt. 1—The basics
Robotics Developer   10/28/2011 5:00:08 PM
NO RATINGS
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..



Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Fist Bumps & the Zombie Apocalypse
Max Maxfield
22 comments
Are you concerned about the possibility of a Zombie Apocalypse or do you scoff at the thought of such an eventuality? If the latter, would you be surprised to hear that the US military has ...

Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
8 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
41 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
151 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)