Chapter 14, Problem 8RQ

Program Plan Intro

Control systems:

• A control system refers to a system that is capable of managing, commanding, directing, or regulating the behavior of other machines or devices.
• Generally, a feedback controller is used for controlling a process or operation automatically.
• It has a wide range of applications including home heating controller, industrial control systems and many such.

On/off control:

• The on/off control makes use of a feedback controller which switches abruptly between two states.
• It is used to keep the final control element in the system in either on or off state.
• A simple bi-metallic domestic thermostat can be related as an on-off controller.

Proportional control:

• Proportional control refers to a linear feedback control system.
• It is used to keep the final control element in intermediate positions between the on-off controls.
• It is more complex than an on-off control system.
• Examples of proportional controller include toilet bowl float proportional value and fly-ball governor.