# PID tuning from a stated model
# Scope: PI settings from an identified first-order-plus-delay process; supplied tuning time.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

processGain = 2
timeConstant = 5 s
delay = 1 s
tuningTime = 3 s

kp := timeConstant/(processGain*(tuningTime+delay))
integralTime := timeConstant [s]
ki := kp/integralTime [s^-1]

check positive integral gain: ki > 0 s^-1

scenario alternative: processGain = 1.6