Class notes EMJ47104

Chapter 2 : Automation Tools and Assembly System

2.1 Hardware Components for Automation & Process
Control
•Actuators
•Sensors
•Analog to Digital Converters
•Digital to Analog Converters
•Input/Output Device for Discrete Data




ENT471 Automation

, Actuators

•Hardware devices that convert a controller command signal
into a change in a physical parameter

•The change is usually mechanical (e.g., position or velocity)

•An actuator is a transducer because it changes one type of
physical quantity into some alternative form

•An actuator is usually activated by a low-level command
signal, so an amplifier may be required to provide sufficient
power to drive the actuator




ENT471 Automation

, Actuators


Practically every industrial process requires objects
to be moved, manipulated, held, or subjected to some type of
force.

•The three most commonly employed methods for
producing the required forces/motions are:

Air – Pneumatics

Liquids – Hydraulics

Electrical – motors, solenoids


ENT471 Automation

, Chapter 2 : Automation Tools and Assembly System




ENT471 Automation