Good news - MS2 closed loop boost control
12-22-2008, 05:33 AM
#1
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Good news - MS2 closed loop boost control
I just grabbed this from msextra.com:
> wes kiser wrote:
>My project will be running again soon, (plus a friends project is now to the >point we want to test some things) and I have a few questions:
>
>1) Boost control PID- I remember back when I stopped paying attention, >there was discussion about changing the PID math to make this easier to >tune. Has this been done yet in any of the betas? If not, should it still be >theoretically possible to tune the loop with what is currently in the code? I >get this is "use at your own risk" stuff, I can let off the gas pedal or set the >overboost cut conservative.
>
>
>I've redone the math. It should be in the next beta (to be released in the >next couple of days.
Hope this one works out good - so I can be driving closed loop boost control in the spring, when my car will be back on the road...
I thought this would be interesting for some of you (maybe the MS1 closed loop gets a workover too)
Greets
> wes kiser wrote:
>My project will be running again soon, (plus a friends project is now to the >point we want to test some things) and I have a few questions:
>
>1) Boost control PID- I remember back when I stopped paying attention, >there was discussion about changing the PID math to make this easier to >tune. Has this been done yet in any of the betas? If not, should it still be >theoretically possible to tune the loop with what is currently in the code? I >get this is "use at your own risk" stuff, I can let off the gas pedal or set the >overboost cut conservative.
>
>
>I've redone the math. It should be in the next beta (to be released in the >next couple of days.
Hope this one works out good - so I can be driving closed loop boost control in the spring, when my car will be back on the road...
I thought this would be interesting for some of you (maybe the MS1 closed loop gets a workover too)
Greets
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12-22-2008, 06:25 AM
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It is (MS1) Keithg is redoing the closed loop idle to use a proper PID algorithm first and then he's gonna do the boost control.
I said I'd test the idle for him just waiting on a release to do it
I said I'd test the idle for him just waiting on a release to do it
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12-30-2008, 10:49 AM
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And here we go:
MSx/Extra EFI • View topic - MS2/Extra Beta 2.1.0 20081229
Won't be able to test this until April, so maybe there is some experiences then...
Greets
MSx/Extra EFI • View topic - MS2/Extra Beta 2.1.0 20081229
Won't be able to test this until April, so maybe there is some experiences then...
Greets
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12-31-2008, 07:47 AM
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currently testing Keiths work on PID control for Idle on MS1, only P and I are coded so far, but it looks good
If this works as planed the PID controls are going to be ported to boost and EGO control.
If this works as planed the PID controls are going to be ported to boost and EGO control.
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12-31-2008, 08:26 AM
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Anyone got an idea what the constants for P,I and D for the boost control might be like for us (I know, that this is different for every car, but maybe someine can explain, what a good starting oint could be and how to tune for optimum?)
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