Joeker said:Good info Zaki,
I came across the term "PID" in my field but I did'nt know wat it stood for.
Anyway, "PID" also used in plastic processing related machinery.
I came across this acronym too but never bothered to check it out. Apparently, from reading one source on the internet, it is a set of rules with which precise regulation of a closed-loop control system is obtained. It is like what the disciplinary teacher('controlling device') does in school to their students(output) in which the teacher appoints a bunch of monitors and prefects(we can call them 'sensors') to report(feedback) to the teacher on any misbehaving student(PROCESS VARIABLE ) and teacher takes action to discipline(using all the proprotionate(P) integral(I) derivative(D) controls lumped in like 'caning, reprimanding, etc.') and to bring back the level of discipline to the acceptable standard ('setpoint') fixed by the school principal/School Board of Directors/MoE('the user').
So, we all have been experiencing 'closed loop control' in many facets of our every day living but individually most of us like it 'open' without external control. After all, if you think you are already a model citizen('already properly self-tuned:regular_smile: ), you will ask why you should be controlled by a closed-loop system ?:regular_smile:
PID is a universall system which can be used by all kinds of industries including piped water processing plant, factory smoke or pollution control, plastic processing plant, etc which need controls on quality,etc. :regular_smile: