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The PID Control Algorithm:
How it works, how to tune it, and how to use it. 2nd ed.

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About the book

The heart of the process control loop is the PID algorithm. Proper understanding of controller tuning requires understanding of the PID algorithm. The PID algorithm comprises three types of responses: Proportional, Integral, and Derivative

The first part of this book will examine the PID control algorithm, as typically implemented in industry. Each of the three elements will be discussed in detail.

The book will then discuss common process responses, including dead time, process lags, and their combinations.

The amount that each of these elements contribute to the control must be adjusted to correspond to the process being controlled. This adjustment is known as "tuning" the control loop. An incorrectly tuned loop will not function correctly, providing less than the desired performance. We will first look at how to determine if a loop is properly tuned and then cover some of the typical methods of tuning loops.

Table of Contents

Chapter 1 Introduction
Chapter 2 The PID algorithm
Chapter 3 Implementation Details of PID Equation
Chapter 4 Advanced Features of the PID algorithm
Chapter 5 Process responses
Chapter 6 Loop tuning
Chapter 7 Multiple Variable Strategies
Chapter 8 Cascade
Chapter 9 Ratio
Chapter 10 Override
Chapter 11 Feedforward
Chapter 12 Bibliography