g.mccormick
Lifetime Supporting Member
I have an application where I will be opening and closing an actuated ball valve to humidify a space. The valve is a pneumatically actuated double acting valve with a namur mount solenoid valve on it. I don't think I want to be opening and closing this thing at 1hz (it will probably not live that long doing that). Since that steam pressure to this valve is very very low, I'm expecting that the open time will be long, and I plan to have a long base time PWM for control of the valve. I'm thinking that the basetime will be 30 or 60 seconds.
My question is, should I set my PID loop execution time to the same as my PWM basetime? I would think that I should. If I had the PID loop executing faster than the PWM time, then the loop would be calculating many times before actually acting on the output. Thoughts?
My question is, should I set my PID loop execution time to the same as my PWM basetime? I would think that I should. If I had the PID loop executing faster than the PWM time, then the loop would be calculating many times before actually acting on the output. Thoughts?