A control system typically comprises a computer or microprocessor that handles data from sensors and sends signals to output devices. An interface box converts signals between the sensors and the processor. A control system manages and regulates the behavior of other systems using input and output devices. Sensors collect data as input, which is processed by a computer program and can result in actuators controlling output devices based on the feedback received.

1. Control Systems
A control system typically comprises of a computer
or microprocessor, a control program which handles
data from sensors and sends signals to output
devices and an interface box to convert signals
between the sensors and the processor.
http://www.bbc.co.uk/schools/gcsebitesize/ic
t/measurecontrol/0computercontrol_act.sht
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2. A control system is a set of devices to manage, command,
direct or regulate the behavior of systems.
In most systems there will be an input and an output. This
block diagram represents that.
Signals flow from the input, through the system and
produce an output.

3. Example

5. Example of Manual Input Devices

6. Example of Automatic Input Devices

8. Example of Output Devices

9. Sensors

10. Example of Sensors

11. Control System Examples

14. Input device: Hardware
devices that allow
information to be input
in to a computer.
Sensor collects
data to a
computer.
It measure physical
quantities such a
noise, light and
moisture in its
environment.
The data captured
from a sensor is
downloaded to a PC
ADC: Convert
analog in
digital signals
Data Logging. The automatic collection of data over
a period of time.
Logging Period. Period of time over which
measurements are automatically taken by sensors. A Program is a
set of
instructions
which are
written to
control
something and
comes after data
is collected from
an input.
When Data is
analyzed,
spreadsheets
are used.
Actuator: Device or motor whose
movement is controlled by a
computer.
Output: Action that arise after
processing. e.g. Turn up the
heat, turn off the light.
Feedback:
Continuous
process of
monitoring
something in a
Control System

15. Flowcharts
To understand what a system flowchart is, it helps to know that the
most basic definition of a system is: a connection of parts that does
something useful.
System flowcharts are a way of displaying how data flows

16. To illustrate this, symbols are used. They are connected
together to show what happens to data and where it
goes. The basic ones include:
Example

17. The flowchart shows what the outcome is if the car is going too fast or too slow. The
system is designed to add fuel, or take it away and so keep the car's speed constant.
The output (the car's new speed) is then fed back into the system via the speed sensor.

18. http://youtu.be/hNpLN2TcPQ8
Check this video out