PID Algorithm, and CSH, HQ has flash ideas about proms

Bruce Plecan nacelp at bright.net
Sun Sep 20 15:55:40 GMT 1998


This is a posting off another list.  I've seen PID mentioned a bunch
in the archives, and figured this might be useful to someone doing
such things.

None PID,
I've had a thought, and lately several others have mentioned
similiar ideas, and was wondering if now is the time to try something.
Building our own program for use in a gm ecm.
With all this talent, it would seen possible to "just" (and I fully,
understand what a miss leading word just is), edit together
the code from some existing ecms, for our own use?..

Maybe come up with our own stuff for a flash prommed ecm.
Figure out how to defeat the "I don't like you, lock up mode".
Even if it involved a chip change, having a chipless ecm sounds
neat.  A older ecm with a emulator and SRAM is close, but
if we as a group did a flash pcm, it would be the ultimate.
  Maybe do it in modules, ie engine first, work out a batch fire,
maybe TBI+TPI for 4-6-8, and Dissy/DIS, for openers.  Then
the tranny management, and finally a full blown misdetection
4 O2 system, 1-2-3 BAR MAPs, edition..  Sure would beat
6 guys working on 6 ecms that noone else is really interested
in.  If we could come up with one program that with slight
modification, could be used on anything.

  Since this is just an idea, for doing a study, and I looking just for
ideas, e-mail, if you'd rather not be exposed to too much banter.....
No folks this will not deter current plans, as this will take alot of
time to engineer.
Cheers
Bruce


>    Source is "Embedded System Programming"
>    downloaded from  ftp://ftp.mfi.com/pub/espmag/1997/gaddy.txt
>
>> I'm sorry to say, but I have no comments for this code.  I lost the
>> original source of this, which included a very good article on the
>> subject.  If you are familiar with the terms used in PID control, I
>> do recall that the variable names correspond very well to the terms.
>> I don't know why I left off the following partial attribution.  If
>> you were to look in a Guide to Periodical Literature for an article
>> titled "How to Write a PID Algorithm" by Garth Gaddy, p. 62, May 1997
>> (publication name lost) you will find the original article it came
>> from.  I'm thinking it's something like Plant Engineering, or Process
>> Engineering,
>





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