|
savages4
|
 |
« Reply #15 on: February 18, 2013, 02:56:58 PM »
|
|
|
So is it wise to increase the axis to support the higher levels over 1 bar of boost or usually unnecessary?
|
|
|
|
|
Logged
|
|
|
|
|
AARDQ
|
|
« Reply #16 on: February 18, 2013, 03:12:57 PM »
|
|
|
It's error (I think that's correct). So 1,000 mbar of error, not 1,000 mbar boost. So no, no need to change the axis.
|
|
|
|
|
Logged
|
|
|
|
|
|
|
matchew
|
|
« Reply #18 on: February 18, 2013, 03:47:55 PM »
|
|
|
the input to that map's axis is lde (ld error)
Which map? Here's another nub question, why does the KFLDIMX map only go up to 1000 mbar, do we not have control of the duty cycles beyond this?
How does it only go up to 1000mbar? |
|
|
|
|
Logged
|
|
|
|
|
s5fourdoor
|
|
« Reply #19 on: February 18, 2013, 03:52:30 PM »
|
|
|
Its the error of the Measured Target.... So if you wanted 23psi but you were getting 18psi that'd be a 5-psi error. 1000 mbar is 14.7 psi ERROR.
|
|
|
|
|
Logged
|
|
|
|
B234R
Full Member
Karma: +11/-0
 Offline
Posts: 75
|
|
« Reply #20 on: February 18, 2013, 04:33:03 PM »
|
|
|
Maybe ME7.1 is different, but I doubt it.
At least on ME7.5 and MED9 the pressure input to KFLDIMX is relative target pressure (PLSOLR_W)
Why would it be "boost pressure error"?
EDIT:
Ok, quickly looked at a ME7.1.1 .dam File.
Axis is boost pressure, unit hPa, 0-2559.9609375
Not pressure error.
|
|
|
|
« Last Edit: February 18, 2013, 04:39:25 PM by B234R »
|
Logged
|
|
|
|
|
nyet
|
|
« Reply #21 on: February 18, 2013, 04:35:46 PM »
|
|
|
Maybe ME7.1 is different, but I doubt it.
At least on ME7.5 and MED9 the pressure input to KFLDIMX is relative target pressure (PLSOLR_W)
Why would it be "boost pressure error"?
I could be wrong about KFLDIMX, but the rest of the PID (and gain schedule) is driven by lde. I'd have to look at the FR again. If you are right, the 5120 hack would be one solution. |
|
|
|
|
Logged
|
|
|
|
B234R
Full Member
Karma: +11/-0
Offline
Posts: 75
|
|
« Reply #22 on: February 18, 2013, 04:45:07 PM »
|
|
|
I have looked at the ME7.5 and MED9 Funktionsrahmen.
Trust me, it is plsol_r.
|
|
|
|
|
Logged
|
|
|
|
|
nyet
|
|
« Reply #23 on: February 18, 2013, 05:47:12 PM »
|
|
|
I have looked at the ME7.5 and MED9 Funktionsrahmen.
Trust me, it is plsol_r.
Yes. You are right, I was wrong. It is plsol_r in ME7.1 as well. Which is plsol (requested boost) - plgrus (basically ambient pressure). I don't know what CWPLGU.0 is in ME7.1 but I assume it is 1 since it has an ambient pressure sensor? I have no idea how BGPLGU works so hopefully others can chime in here. |
|
|
|
|
Logged
|
|
|
|
|
phila_dot
|
|
« Reply #24 on: February 18, 2013, 07:21:27 PM »
|
|
|
plgrus_w is not as described in the FR.
plgrus_w is plgta output from KFVPLGU multiplied by pssol_w, then plsolr_w is plsol_w minus plgrus_w. This is all done in LDRPID.
|
|
|
|
|
Logged
|
|
|
|
|
nyet
|
|
« Reply #25 on: February 18, 2013, 07:27:02 PM »
|
|
|
phila: have you ever logged plgrus? How does it differ from pu_w? Is CWPLGU.0 1 or 0?
|
|
|
|
|
Logged
|
|
|
|
|
phila_dot
|
|
« Reply #26 on: February 18, 2013, 07:46:31 PM »
|
|
|
phila: have you ever logged plgrus? How does it differ from pu_w? Is CWPLGU.0 1 or 0?
They are nearly identical. CWPLGU is not considered. |
|
|
|
|
Logged
|
|
|
|
|
nyet
|
|
« Reply #27 on: February 18, 2013, 10:42:38 PM »
|
|
|
They are nearly identical.
CWPLGU is not considered.
:/ |
|
|
|
|
Logged
|
|
|
|
|
phila_dot
|
|
« Reply #28 on: February 18, 2013, 11:19:52 PM »
|
|
|
:/
Yea...you can disregard that completely. This is one of the few examples where the FR isn't even close in our application. |
|
|
|
|
Logged
|
|
|
|
|
nyet
|
|
« Reply #29 on: February 18, 2013, 11:37:07 PM »
|
|
|
plgrus_w is not as described in the FR.
plgrus_w is plgta output from KFVPLGU multiplied by pssol_w, then plsolr_w is plsol_w minus plgrus_w. This is all done in LDRPID.
I don't get this. KFVPLGU seems to be all ones. This would make plgrus_w basically the modeled pressure drop across the throttle plate (difference between plsol and pssol), not pu. (plsol = pssol / vpsspls) What am i missing? |
|
|
|
|
Logged
|
|
|
|
|
