16-05-2014, 03:33 PM
Electronic System Introduction
[attachment=63343]
INTRODUCTION
An Electronic System is a physical interconnection of components, or parts, that
gathers various amounts of information together with the aid of input devices such as
sensors, responds in some way to this information and then uses electrical energy in the
form of an output action to control a physical process or perform an operation on the
signal.
But electronic control systems can also be regarded as a process that transforms
one signal into another so as to give the desired system response. Then we can say that a
simple electronic system consists of an input, a process, and an output with the input
variable to the system and the output variable from the system both being signals.
There are many ways to represent a system, for example: mathematically,
descriptively, pictorially or schematically. Electronic systems are generally represented
schematically as a series of interconnected blocks and signals with each block having its
own set of inputs and outputs.
As a result, even the most complex of control systems can be represented by a
combination of simple blocks, with each block containing or representing an individual
component or complete sub-syst
Types of Electronic System
Electronic systems operate on either continuous-time (CT) signals or discrete-time
(DT) signals. A continuous-time system is one in which the input signals are defined along a
continuum of time, such as an analogue signal which "continues" over time producing a
continuous-time signal. But a continuous-time signal can also vary in magnitude or be
periodic in nature with a time period T.
Interconnection of Systems
One of the practical aspects of electronic systems and block-diagram representation
is that they can be combined together in either a series or parallel combinations to form
much bigger systems. Many larger real systems are built using the interconnection of
several sub-systems and by using block diagrams to represent each subsystem, we can
build a graphical representation of the whole system being analysed.
When subsystems are combined to form a series circuit, the overall output
at y(t) will be equivalent to the m
Summary of an Electronic System
We have seen that a simple Electronic System consists of an input, a process, an
output and possibly feedback. Electronic systems can be represented using interconnected
block diagrams where the lines between each block or subsystem represents both the flow
and direction of a signal through the system. Block diagrams need not represent a simple
single system but can represent very complex systems made from many interconnected
subsystems. These subsystems can be connected together in series, parallel or
combinations of both depending upon the flow of the signals.
We have also seen that electronic signals and systems can be of continuous-time or
discrete-time in nature and may be analogue, digital or both. Feedback loops can be used
be used to increase or reduce the performance of a particular system by providing stability
and control in which control is the process of making a system variable adhere to a
particular value, called the reference value.
In the next tutorial about Electronic Systems, we will look at a types of electronic
control system called an Open-loop System which generates an output signal, y(t) based
on its present input values and as su
[attachment=63343]
INTRODUCTION
An Electronic System is a physical interconnection of components, or parts, that
gathers various amounts of information together with the aid of input devices such as
sensors, responds in some way to this information and then uses electrical energy in the
form of an output action to control a physical process or perform an operation on the
signal.
But electronic control systems can also be regarded as a process that transforms
one signal into another so as to give the desired system response. Then we can say that a
simple electronic system consists of an input, a process, and an output with the input
variable to the system and the output variable from the system both being signals.
There are many ways to represent a system, for example: mathematically,
descriptively, pictorially or schematically. Electronic systems are generally represented
schematically as a series of interconnected blocks and signals with each block having its
own set of inputs and outputs.
As a result, even the most complex of control systems can be represented by a
combination of simple blocks, with each block containing or representing an individual
component or complete sub-syst
Types of Electronic System
Electronic systems operate on either continuous-time (CT) signals or discrete-time
(DT) signals. A continuous-time system is one in which the input signals are defined along a
continuum of time, such as an analogue signal which "continues" over time producing a
continuous-time signal. But a continuous-time signal can also vary in magnitude or be
periodic in nature with a time period T.
Interconnection of Systems
One of the practical aspects of electronic systems and block-diagram representation
is that they can be combined together in either a series or parallel combinations to form
much bigger systems. Many larger real systems are built using the interconnection of
several sub-systems and by using block diagrams to represent each subsystem, we can
build a graphical representation of the whole system being analysed.
When subsystems are combined to form a series circuit, the overall output
at y(t) will be equivalent to the m
Summary of an Electronic System
We have seen that a simple Electronic System consists of an input, a process, an
output and possibly feedback. Electronic systems can be represented using interconnected
block diagrams where the lines between each block or subsystem represents both the flow
and direction of a signal through the system. Block diagrams need not represent a simple
single system but can represent very complex systems made from many interconnected
subsystems. These subsystems can be connected together in series, parallel or
combinations of both depending upon the flow of the signals.
We have also seen that electronic signals and systems can be of continuous-time or
discrete-time in nature and may be analogue, digital or both. Feedback loops can be used
be used to increase or reduce the performance of a particular system by providing stability
and control in which control is the process of making a system variable adhere to a
particular value, called the reference value.
In the next tutorial about Electronic Systems, we will look at a types of electronic
control system called an Open-loop System which generates an output signal, y(t) based
on its present input values and as su