Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· In some cases we will be able to monitor continuous process variables, but only be able to change discrete actuators. This is common in heating systems, the system is either on/off, but temperature is monitored continuously.
· A common method is to use two setpoints with upper and lower bounds.
· Consider the example of a heating system in a room.
