Hondata - looking through the .kal manually, it looks like this was a planned feature at some point (BoostControlUsePID=0), but it has yet to be included in a release. Any plans? Did you include it in the code and it never worked the way you wanted or was it something you felt wasn't strongly requested enough to release?
PS - This and knock control would make me very happy.
- Darius
Feature Request: PID Gain on Boost Controller
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The Spectacle
- Posts: 95
- Joined: Wed Jul 15, 2009 11:09 am
Knock control is in the process of being added.
PID control is difficult for boost control is some ways. To start with you need the wastegate and control solenoid plumbed correctly so that the natural boost curve is flat to begin with. Next you need a starting duty cycle to boost table and correction table. Then you need to tune a correction table and then go through the PID setup process, where you change P values to achieve a certain frequency, and then turn the I and D components. It turned into a lot of fiddling around, far more so that the straight duty lookup we currently use, and we felt many people would not achieve good boost control. Perhaps it will be an option in the future.
PID control is difficult for boost control is some ways. To start with you need the wastegate and control solenoid plumbed correctly so that the natural boost curve is flat to begin with. Next you need a starting duty cycle to boost table and correction table. Then you need to tune a correction table and then go through the PID setup process, where you change P values to achieve a certain frequency, and then turn the I and D components. It turned into a lot of fiddling around, far more so that the straight duty lookup we currently use, and we felt many people would not achieve good boost control. Perhaps it will be an option in the future.
Hondata
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The Spectacle
- Posts: 95
- Joined: Wed Jul 15, 2009 11:09 am