PID Controller Explained – Industrial Control Basics

Overview

This video explains the PID Controller (Proportional–Integral–Derivative), one of the most widely used control methods in industrial automation.

A PID controller is a closed-loop control system that continuously compares the desired value (setpoint) with the actual value (process variable) and calculates the error to correct it automatically.

It uses three actions:

• Proportional (P): reacts to current error
• Integral (I): corrects accumulated past errors
• Derivative (D): predicts future error

By combining these three, PID controllers provide accurate, stable, and efficient control of industrial processes.

What You Will Learn

• What is a PID controller
• How PID works (P, I, D components)
• Concept of setpoint, process variable, and error
• How PID improves system stability and accuracy
• Basic idea of PID tuning

Applications

• Temperature control (boilers, ovens, HVAC systems)
• Motor speed and position control
• Pressure and flow control in pipelines
• Industrial automation processes (chemical, water treatment)
• Robotics and motion control systems
• Energy systems and power control