complex math and so???are skills
05-09-2007, 08:41 AM
#22
Originally Posted by beast69camaro
only vaguely......they've shown up a few times in my mech. engineering classes, mostly when reviewing stress and strain analysis.
Just a fancy way of saying you'll be messing w/ matrices, is it not?
Just a fancy way of saying you'll be messing w/ matrices, is it not?
For some Tensor info See here-> http://www.grc.nasa.gov/WWW/K-12/Num...2002211716.pdf
ohhh...I Googled MatLab and it looks like they use tensors in mult. situations.
That's a fancy module!!
05-09-2007, 08:52 AM
#24
Originally Posted by jimmyblue
I have an equation which will solve all yer problems 
Holley + MSD = Done
Holley + MSD = Done
heres one back at ya. MSD + random ignition problems = frustrating...
lol, i think the idea here is to understand how it works.. not just get the car running.
05-09-2007, 09:55 PM
#26
Originally Posted by Bink
No, not fancy matrices. I think it's vectors and matrices with an added dimensions- orders of magnitude and direction. They used Reimann tensors in developing General Relativity. Way over my head.
For some Tensor info See here-> http://www.grc.nasa.gov/WWW/K-12/Num...2002211716.pdf
ohhh...I Googled MatLab and it looks like they use tensors in mult. situations.
That's a fancy module!!
For some Tensor info See here-> http://www.grc.nasa.gov/WWW/K-12/Num...2002211716.pdf
ohhh...I Googled MatLab and it looks like they use tensors in mult. situations.
That's a fancy module!!
Also....vectors can be viewed as a special type of tensor. Direction?.....Vectors and tensors encompass concepts more general than physical space, and associating a "direction" with them is only a tool to help visualize or "concretize" the idea.
FYI, matrix/vector operations are the basis for the entire operation of the matlab software .......
Last edited by beast69camaro; 05-09-2007 at 10:35 PM.
05-10-2007, 01:17 AM
#28
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Originally Posted by jimmyblue
I have an equation which will solve all yer problems
Holley + MSD = Done
Holley + MSD = Done
God Bless Carbs..
to hell with the evil fuel injection.. its the devil
05-10-2007, 06:28 PM
#31
Originally Posted by beast69camaro
I didn't say "fancy matrices".....I posed my statement as a question in an attempt to be polite when saying that the presence of tensors just means you will be using matrix operations. In other words, I'm not sure a complete understanding of the concept of a tensor is necessary to do the math, so long as one is familiar with matrix operations.
Also....vectors can be viewed as a special type of tensor. Direction?.....Vectors and tensors encompass concepts more general than physical space, and associating a "direction" with them is only a tool to help visualize or "concretize" the idea.
FYI, matrix/vector operations are the basis for the entire operation of the matlab software .......
Also....vectors can be viewed as a special type of tensor. Direction?.....Vectors and tensors encompass concepts more general than physical space, and associating a "direction" with them is only a tool to help visualize or "concretize" the idea.
FYI, matrix/vector operations are the basis for the entire operation of the matlab software .......
beast69camaro - sorry, I wasn't trying to be a smart aleck. No offense intended.
I need to remember that you guys can't "read" a person within a forums context.
I really would like to better understand this.
joel
05-11-2007, 09:57 AM
#32
Originally Posted by RedHardSupra
i have some ideas and an initial approach for this ready. i do however need an engineering math person to lay out some tensor theory, and/or some matlab approach for it. anyone up for a powwow about this?
See thread->http://forum.efilive.com/showthread.php?t=5218
05-23-2007, 02:49 PM
#34
i think i just figured out how to get the temperature bias table. once we have that we should get a much better chance at getting the gmve right. the cool part is that this will apply to ls1/ls6, ls2, ls7 stuff as well, without a good temp model you cant the right ve/gmve/parameters for the E38/E67 stuff.
once bias table is optimized, we can move on to actually getting the ve/gmve stuff properly, not just adjusting with afr%error without temp/pressure adjustments.
the problem is right now it's a very interactive, manual process in excel. i'll have to figure out how to automate this stuff, i dont think most people could run through it right now.
once bias table is optimized, we can move on to actually getting the ve/gmve stuff properly, not just adjusting with afr%error without temp/pressure adjustments.
the problem is right now it's a very interactive, manual process in excel. i'll have to figure out how to automate this stuff, i dont think most people could run through it right now.
05-25-2007, 11:22 AM
#35
Originally Posted by RedHardSupra
we've leaped into "rocket scientists with a lot of custom MatLab code" tuning.
I'd offer my help if I wasn't on the opposite side of the country and too busy with work and school (masters) to be useful.
05-25-2007, 01:33 PM
#36
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Originally Posted by beast69camaro
I didn't say "fancy matrices".....I posed my statement as a question in an attempt to be polite when saying that the presence of tensors just means you will be using matrix operations. In other words, I'm not sure a complete understanding of the concept of a tensor is necessary to do the math, so long as one is familiar with matrix operations.
Also....vectors can be viewed as a special type of tensor. Direction?.....Vectors and tensors encompass concepts more general than physical space, and associating a "direction" with them is only a tool to help visualize or "concretize" the idea.
FYI, matrix/vector operations are the basis for the entire operation of the matlab software .......
Also....vectors can be viewed as a special type of tensor. Direction?.....Vectors and tensors encompass concepts more general than physical space, and associating a "direction" with them is only a tool to help visualize or "concretize" the idea.
FYI, matrix/vector operations are the basis for the entire operation of the matlab software .......
05-25-2007, 05:04 PM
#38
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Originally Posted by RedHardSupra
well if you know how to use them, why don't we talk? i got it done with slow and painful excel tricks, but i think this is solvable much more elegantly with tensors.
Besides, the complexity of the topic is well beyond most peoples comprehension on this forum. You'll spend a lifetime trying to explain it, let alone argue with people that don't know what they're talking about but they're right anyways
05-25-2007, 05:28 PM
#39
Originally Posted by SScam68
I wouldn't use excel, I would use Matlab. Let's not kid ourselves.
Besides, the complexity of the topic is well beyond most peoples comprehension on this forum.
Besides, the complexity of the topic is well beyond most peoples comprehension on this forum.
05-25-2007, 06:22 PM
#40
TECH Senior Member
So after you get the temp bias, you have to solve a tensor equation for the unknowns matrix, is this the basic gist of it...?
Ah... it must be nice to have MatLab... (...I don't qualify as a student, and neither does my Mrs... yet...).
Ah... it must be nice to have MatLab... (...I don't qualify as a student, and neither does my Mrs... yet...).