Introduction to Control Systems In this lecture, we lead you through a study of the basics of control system After completing the chapter, you should be able to Describe a general process for designing a control system Understand the purpose of control engineering Examine examples of control systems
Control Engineering: Control engineering or Control systems engineering is based on the foundations of feedback theory and linear system analysis, and it integrates the concepts of network theory and communication theory It is the engineering discipline that applies control theory to design systems with predictable behaviors
plant since a control oscillation remains of amplitude b and cycle time T, upon which the values Tu, Tg and Ks depend Fig 7 Control result of an alarm signalling unit without time response It can easily be seen that the control oscillation diminishes as the F = d) Fundamentals of Control Engineering Data Sheet 60-0 15 EN
control system is to identify what can be automated It will help if you have an understanding of basic hydraulics, pneumatics, mechanical operating mechanisms, electronics, control sequences, etc and a solid knowledge of the operation or process that you are going to automate You should understand how to control motion and movement, regulate
Control theory is a relatively new field in engineering when compared with core topics, such as statics, dynamics, thermodynamics, etc Early examples of control systems were developed actually before the science was fully understood For example the fly?ball governor developed by James Watt to control
digital control systems] Kuo B C (1987) Automatic control systems, 720pp Prentice-Hall, Englewood Cliffs [This is a widely used textbook that presents essential principles and design of feedback control systems] Ogata K (1990) Modern Control Engineering, 963pp Prentice-Hall, Englewood Cliffs [A standard
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64669_3Control_System_Engineering_eBook.pdf
Automation 101:
Control System
A Condensed Guide to Automation Control
System Specification, Design and Installation
A Publication of
An Industry Guide To
Engineering
Version 1.0
TABLE OF
CONTENTS
Introduction
Chapter 1 ------------ Consider Safety First
Chapter 2 ------------ Identifying Processes for Automation
Chapter 3 ------------ Specify Devices
Chapter 4 ------------ Design
Chapter 5 ------------ Build
Chapter 6 ------------ Install and Start-up
Chapter 7 ------------ Maintain
Additional Resources
f t in 2
Introduction
The following is a general guide to the specification, design and installation of automated control systems. The information and references are presented in a logical order that will take you from the skills required to recognize an operation or process that may be suited for automating, to tips on setting up a program to maintain the control system. Whether an expert or a novice at electrical control devices and systems, the information presented should give you a check list to use in the steps to implementing an automated control system. design situation is to discover what the problem really is. - Unknown f t in 3
CHAPTER
1
Consider Safety First
4 The first most important item to consider before attempting an automated control system, or even a simple on/off control for a pump, is safety, both for personnel that may be working with or near the automated equipment, as well as to prevent damage to the equipment. To minimize the risk of potential safety problems, you should follow all applicable local, state and national codes that regulate the installation and operation of your control system, along with the equipment or process it is designed to control. These codes vary by area and usually change over time, constantly being reviewed and updated. It will be your responsibility to determine which codes should be followed and to verify that the equipment, installation, and operation is in compliance with the latest revision of these codes. It would be wise to educate yourself as much as possible about electricity and electrical equipment in general. A good understanding of will go a long way in helping you understand the various codes and standards.
4 Things to Consider
We coǀer the basics of DC and AC theory, Ohm͛s Law,