Dear readers,
I would like to develop a machine vision vi that calculates the size of a droplet and produces a feedback to keep the droplet size constant (within certain limits). If the droplet increases in size I want a heater to be turned on so that the droplet sized is decreased again.
what do I have: I have a compact daq system with the follow modules: 9481; 9263; 9205; 9211; 9401, I have machine vision software, a resistive wire to function as a heater, a DC power supply, a solid state relay (oacm-uh) and a usb camera.
I have already created a VI that calculates the droplet size but now I want to develop a PID control that controls the heating power of the heating element. The heating element is a resistive wire which quickly heats up and down. The wire is connected to a DC source which I want to control via the SSR.
now comes my question because I am new with PID, PWM and SSR
Does anyone of you have any tips or tricks for me on the following question: How can I develop a good control for heating up the droplet to remain at constant size and what do I need for it to make it work. Can i work with the hardware I already have or do I need extra stuff?
