This text describes how to control variables of physical dynamic systems - as level, temperature, pressure, speed, and position - using the PID (Proportional, I... » 

This text describes how to control variables of physical dynamic systems - as level, temperature, pressure, speed, and position - using the PID (Proportional, Integral, Derivative) controller. This controller is without doubt the most important and most frequently used controller used in practical industrial applications. «