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Chapter IController Modes and Loop Components
Chapter IITypical Mode Settings
Chapter IIIDefinition of Performance Criteria
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accumulated error analog controllers Calculate cascade control closed loop response control loop control valve controller mode settings controller output decrease derivative digital controllers distributed control systems disturbance dynamics equal Equation equivalent dead estimated factor feedforward filter FlGURE flow resistance pressure heat transfer coefficient hysteresis inches w.c. increase influent flow inner loop input integrating process largest time constant loop dead loop performance loop period maximum measurement gain measurement time constant minutes model predictive controller noise nonlinearity Nyquist plots open loop error oscillations outer loop peak and accumulated peak error percent PID controller positioner process gain process time constant proportional band pulse reset action resistance pressure drop RUN SET TITLE runaway process sample scfm self-regulating process series controller Smith Predictor steady-state gain stroke resolution surement surge tank tank Ex temperature thermowell transmitter troller tuned ultimate period valve gain valve stroke valve time constant zero