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II. PID Controller Design and Tuning (by
Doug Cooper)
5)
Process Control Preliminaries
Design and Tuning Recipe Must Consider Nonlinear Process Behavior
A Controller’s “Process” Goes From Wire Out to Wire In
The Normal or Standard PID Algorithm
6) Proportional Control - The Simplest PID Controller
The P-Only Control Algorithm
P-Only Control of the Heat Exchanger Shows Offset
P-Only Disturbance Rejection of the Gravity Drained Tanks
7) Caution: Pay Attention to Units and Scaling
Controller Gain is Dimensionless in Commercial Systems
8) Integral Action and PI Control
Integral Action and PI Control
PI Control of the Heat Exchanger
PI Disturbance Rejection of the Gravity Drained Tanks
The Challenge of Interacting Tuning Parameters
PI Disturbance Rejection in the Jacketed Stirred Reactor
Integral (Reset) Windup, Jacketing Logic and the Velocity PI Form
9) Derivative Action and PID Control
PID Control and Derivative on Measurement
The Chaos of Commercial PID Control
PID Control of the Heat Exchanger
Measurement Noise Degrades Derivative Action
PID Disturbance Rejection of the Gravity Drained Tanks
10)
Signal Filters and the PID with Controller Output Filter Algorithm
Using Signal Filters In Our PID Loop
PID with Controller Output (CO) Filter
PID with CO Filter Control of the Heat Exchanger
PID with CO Filter Disturbance Rejection in the Jacketed Stirred Reactor
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