ISA

Know when to look outside the PID tuning

Plant engineers and technicians are frequently asked to tune the controller when a control loop’s process value has prolonged or significant excursions from the set point. But in many instances, no ...
Electronic Design

PID-Based Position Controllers Work With DC Brush Motors

Three new PID-based position controllers have been developed for use with small to medium size DC brushed motors. Well-suited for use in robotics or light industrial positioning systems, the new ...
Automation World

Tuning Tools Maintain Harmony in PID Loops

The tuning of proportional-integral-derivative (PID) control loops was an important change at HollyFrontier’s Navajo Refinery in Artesia, N.M. Its hands-on, “mandraulic” culture was no longer cutting ...
Electronic Design

Cost-Conscious PID Controllers Aim At Brushed DC Motors

These affordable motor-position PID controllers are designed for use with medium-sized brush dc motors. They provide 32-bit position control for dc motors with two ...
ISA

Optimizing to the tune of a PID equation

Machines and processes are controlled using many strategies, from simple ladder logic to custom algorithms for specialized process control, but proportional-integral-derivative (PID) is the most ...