Quote:
Originally Posted by mid_life_crisis
The three dimensional reference table gives us the ability to have different boost targets based on the combination of rpm and throttle position. This is far more versatile than just a simple loop keeping the boost stable relative to throttle position or rpm.
It could be done without the motor speed but I wanted it for a reason that eludes me now.
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i agree. the boost target could be referenced from a table of throttle position and rpm, that's simple enough. the part i was talking about being too complicated was the suggestion of adding motor rpm. we need to control boost, we can read boost, so no need to know the motor rpm required to achieve said boost i guess was my point.
basically you shoot for a boost target, not a motor rpm target, because you don't need to know or care how many rpm's it takes to make the boost you want at the rpm and throttle position you're currently at. only need to know your current value relative to the target.
think like a wastegate. wastegates don't care about compressor rpm
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