1
Download Operating Instructions Type 8635 SIDE Control Positioner
Transcript
GENERAL RULES (APPENDIX) GENERAL RULES (APPENDIX) Selection criteria for continuous valves ................................................................................................................................................................. 142 Characteristics of PID controllers ................................................................................................................................................................................... 144 P fraction ........................................................................................................................................................................................................................................................ 144 I fraction ........................................................................................................................................................................................................................................................... 145 D fraction ........................................................................................................................................................................................................................................................ 146 Superposition of P, I and D fractions .......................................................................................................................................................................... 147 Realized PID controller ................................................................................................................................................................................................................ 148 Setting rules for PID controllers ........................................................................................................................................................................................ 149 Setting rules after Ziegler and Nichols (oscillation method) ......................................................................................................... 149 Setting rules after Chien, Hrones and Reswick (output step method) ............................................................................ 150 8635 - 141
