by Octal450 » Tue Apr 02, 2019 4:56 am
PID tuning and control loop design is not just a simple thing, takes some knowledge and experience to do right, (as you probably know if you took control theory classes). Irregardless, I looked into this some years back:
Problem 1: A/P is poorly layed out, too much nasal interfearing in the loop, PIDs in places there should not be, bad integrators
Problem 2: Bad FBW stability, the FBW on this plane is really poor and does not work well. A/P commands this FBW, so in the end it will end up behaving odd (As you mention)
Essentially to fix this, the FlyByWire needs to be completely rewritten, and the a totally new A/P on top of it. But if someone is going through all that, the FDM needs attention, and there is tons of missing or wrong logic in the controls of the A/P and other aircraft systems that tie into it.
So unfortunately it is a big task. If someone wants to start, you may want to use my Airbus A330 FBW as a base.
PS: You're english is good!
Kind Regards,
Josh
Last edited by
Octal450 on Thu Feb 15, 2024 8:21 am, edited 1 time in total.