understandable explanation of PID parameters?
#1
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Join Date: Mar 2006
Location: Schwarzenberg, Germany
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understandable explanation of PID parameters?
Hi guys,
as I'd like to test the new MS2 closed loop boost control I need an understandable explanation of the PID parameters. I had a look at wikipedia in English as well as in German - I didn't understand even in German. The last time I had this type of maths was like 10 years ago when studying.
So could someone give me an "easy" explanation? Thanks!
as I'd like to test the new MS2 closed loop boost control I need an understandable explanation of the PID parameters. I had a look at wikipedia in English as well as in German - I didn't understand even in German. The last time I had this type of maths was like 10 years ago when studying.
So could someone give me an "easy" explanation? Thanks!
#2
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P: a rubberband attached to a point. the further you are from that point, the stronger the rubber band pulls you back to it. Analagous to the spring on your car.
I: a temporal rubber band. the longer it's not centered on the set point, the stronger it gets. in other words, over time, it zeroes in better.
D: a shock absorber on your car. it damps the output of the controller as it approaches the set point. too low/soft and you get overshoot (cadillac). too high/hard and the reaction time of the system is sluggish and unstable.
I: a temporal rubber band. the longer it's not centered on the set point, the stronger it gets. in other words, over time, it zeroes in better.
D: a shock absorber on your car. it damps the output of the controller as it approaches the set point. too low/soft and you get overshoot (cadillac). too high/hard and the reaction time of the system is sluggish and unstable.
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