Hi;
Scenario 2:
I had one similar (maybe!) problem - to controll temp. in one wessel, which is heated by hot steam (168degC or about 10bars of presure); but in this time I have used PD controller; there is Very simple mathematics how to make this without using PID; and I obtained to control temp in a range of +/- 1deg;
What I had not used standard PID? I could`nt etsblish quickly open and close this steam on/off valve; then, I used mathematics to establish MOMENT of ON and OF state of the valve; After; you need to estimate gain, scan time and D parameter; maybe sounds complicated, but there isn`t.
If anybody is interested, just reply to me!
regards for everybody!!
Scenario 2:
I had one similar (maybe!) problem - to controll temp. in one wessel, which is heated by hot steam (168degC or about 10bars of presure); but in this time I have used PD controller; there is Very simple mathematics how to make this without using PID; and I obtained to control temp in a range of +/- 1deg;
What I had not used standard PID? I could`nt etsblish quickly open and close this steam on/off valve; then, I used mathematics to establish MOMENT of ON and OF state of the valve; After; you need to estimate gain, scan time and D parameter; maybe sounds complicated, but there isn`t.
If anybody is interested, just reply to me!
regards for everybody!!