Burkert 8630 - General Rules (Appendix)

8630 - 157
GENERAL RULES (APPENDIX)
GENERAL RULES
(APPENDIX)
Selection criteria for continuous valves................................................................................................................................................................. 158
Characteristics of PID controllers
................................................................................................................................................................................... 160
P component ............................................................................................................................................................................................................................................. 160
I component
................................................................................................................................................................................................................................................ 161
D component
............................................................................................................................................................................................................................................. 162
Superimposing the P, I and D components
........................................................................................................................................................ 163
Function of a real PID controller
....................................................................................................................................................................................... 164
Rules for setting PID controllers ....................................................................................................................................................................................... 165
Setting rules of Ziegler and Nichols (oscillation method) ................................................................................................................. 165
Setting rules of Chien, Hrones and Reswick (controller output step method)
...................................................... 166