Ed Bullerdiek

Articles

PID, APC May 8, 2024

PID spotlight, part 4: How to balance PID control for a self-limiting process

Control of a self-limiting process with a proportional-integral-derivative (PID) controller begins with learning the role of controller gain, integral and derivative in controlling the self-limiting process. Controller gain responds to the present, integral corrects based on the past, and derivative can be used to best-guess the future.

By Ed Bullerdiek
PID, APC April 8, 2024

PID spotlight, part 3: How to select one of four process responses

Tuning a PID controller begins with identifying the process type. The process type determines the rules and methodology used to tune the PID controller.

By Ed Bullerdiek
PID, APC March 12, 2024

PID spotlight, part 2: Know these 13 terms, interactions

Learning proportional-integral-derivative (PID) controller tuning begins with the basics: Definition of terms, the PID equation (multiple forms) and seeing how each of the PID terms functions independently from each other and separated from a process.

By Ed Bullerdiek
Courtesy: Ed Bullerdiek, retired control engineer
PID, APC January 29, 2024

Three reasons to tune control loops: Safety, profit, energy efficiency

PID controller tuning is a keystone skill for control practitioners that is often given short shrift. What is the justification for investing in this critical skill? Why tune control loops?

By Ed Bullerdiek