Integral term of a PI controller


Thread Starter

kufre bassey

good day all,

i've just written a program in fortran77 for the model of a binary distillation column. i included a PI controller in my program. To obtain the integral term of the PI, I used the explicit euler to numerically integrate the error. i would love to compare my results using another method to numerically integrate the error, but i'm confused. the euler method was quite simple. please which other method simple can i use to obtain the integral term? can i also see an example of a simple system (in fortran77) where they are applied in a PI controller to obtain the integral term? please an answer would be greatly appreciated.

many thanks