Has anyone tried logging shock velocities? Sample rate ok?
shock sensors
What I have read is that for normal roll and pitch shocks move up to 4"/sec and for major bumps maybe 10"/sec. If so, at 100hz we're getting a sample every .040" of travel for roll and pitch and every .100 for bumps. Seems adequate enough to me.
Well... it's an interesting question!!
The main reason we are upgrading the DL1 to higher sample rates is to support users wanting to do shock/dampler analysis, and up until very recently I really thought that >100Hz was needed.
However I recently had an interesting meeting with one of our professional customers and long time fan of the DL1 - he told me they use the standard DL1 for lots of there suspension development. He was a very qualified/knowledgeable and senior chassis engineer at a very large OEM, heading up a group in their performance divison.... given he was far more qualified in the subject than myself, I've now changed my opinion to 100Hz is actaully enough for this work, although, faster is still preferable.
Kind regards,
Support
The main reason we are upgrading the DL1 to higher sample rates is to support users wanting to do shock/dampler analysis, and up until very recently I really thought that >100Hz was needed.
However I recently had an interesting meeting with one of our professional customers and long time fan of the DL1 - he told me they use the standard DL1 for lots of there suspension development. He was a very qualified/knowledgeable and senior chassis engineer at a very large OEM, heading up a group in their performance divison.... given he was far more qualified in the subject than myself, I've now changed my opinion to 100Hz is actaully enough for this work, although, faster is still preferable.
Kind regards,
Support
This thread asserts that 500Mz is needed to avoid false interpretation:
http://forums.bimmerforums.com/forum/sh ... ?t=1532197
http://forums.bimmerforums.com/forum/sh ... ?t=1532197
hi,
here is an example abozut logging shocks with 100Hz.
http://future-electronic.eu/images/stories/Projekte/Automotiv_Fahrwerkssimulation/FahrwerksanalyseLandy.pdf
best regards
carsten
here is an example abozut logging shocks with 100Hz.
http://future-electronic.eu/images/stories/Projekte/Automotiv_Fahrwerkssimulation/FahrwerksanalyseLandy.pdf
best regards
carsten
-
- Posts: 6
- Joined: Sat Nov 01, 2008 7:17 pm
- Location: New Zealand
- Contact:
Speed is the 1st derivative of displacement. Acceleration is the 2nd derivative.
http://www.dummies.com/how-to/content/h ... tion-.html
Differentiate displacement and you get speed.
Differentiate speed and you get acceleration.
http://www.dummies.com/how-to/content/h ... tion-.html
Differentiate displacement and you get speed.
Differentiate speed and you get acceleration.
BMW 2000 M Coupe
Return to “Sensor-related questions”
Who is online
Users browsing this forum: No registered users and 12 guests