Pressure Pid system

[Kisolveig]

Hi guys I'm working on an experiment where I'm utilizing Labview to control pressure. I'm using the NIUSB 6008 to run LabView. I'm asking for help in a few areas just to get a better understanding of what direction I want to go with the pressure controller. I've seen the PID stuff and was wondering if he simple PID demo from LabView found here http://zone.ni.com/devzone/cda/epd/p/id/2382 would work in controlling pressure or if I have o create my own, and if anyone can help point me in the right direction. I've looked at a few things but nothing very helpful has shown up. I just need to be able to increase the pressure by a set amount and hold for a few seconds. I looked at a ramp pattern but didn't know how to get it done. Thank in advance for any help.

[KateB]

You need to modify this example to use DAQmx. However, it'll work or not it depends on whether you put PID correctly, and it's trial and error process unless you use PID autotune which comes with control module (additional pay). Seem like your program needs to run on different states (ramp up, stable pressure...). Hence, try learning state machine which could be found a lot of tutorial by searching "state machine" keyword on ni.com.

[Kisolveig]

Ok if I have the PId and Fuzzy logic toolkit is there a certain PID I can use that will accomplish the task?

[KateB]

Yep, and included examples as well.

[Kisolveig]

Great! Thank You very much