sounds cool, eh? i've got to do this and i've got like 3 weeks to do it in. the three jets are equally spaced around the perimeter of the device. (a flat block about 12" on a side) we have an independent means of measuring height at each jet. i'm planning on starting by just using three independent PID loops to control each sensor/jet pair. everything seems "under control" at this point of development, but i'm very concerned when i go to do this that the three loops will interact with each other (since they're coupled together by being attached to the same platform) i.e. when a change height command is issued and the loops start responding, will the oscillate/fight each other?
will this be a problem? where do i find information/examples about doing something like this?
fun challenge, wish i had the time to enjoy the development process, but they're ready to ship the damn thing already........
thanks, michael c