Mechatronics Introduction

1. Dr.S.Ganeshkumar
Assistant Professor
Mechanical Engineering
Title of the subject : Mechatronics
Topic: Introduction

2. Overview of syllabus and CO of the Course
Introduction to mechatronics and System
Concept of Mechatronics approach
Need for Mechatronics
Sensors and Transducers - Introduction
1
2
3
4
5
Chapter - 1
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3. Discuss the interdisciplinary applications of Electronics, Electrical,
Mechanical and Computer Systems for the Control of Mechanical,
Electronic Systems and sensor technology.
CO 1
CO 2
Discuss the architecture of Microprocessor and Microcontroller, Pin
Diagram, Addressing Modes of Microprocessor and Microcontroller.
CO 3
Discuss Programmable Peripheral Interface, Architecture of 8255
PPI, and various device interfacing
3

4. Explain the architecture, programming and application of
programmable logic controllers to problems and challenges in the
areas of Mechatronic engineering.
CO 4
CO 5
Discuss various Actuators and Mechatronics system using the knowledge
and skills acquired through the course and also from the given case studies
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5. Introduction to Mechatronics
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Mechatronics is a
multidisciplinary branch of
engineering that focuses on
the engineering of both
electrical and mechanical
systems, and also includes a
combination of robotics,
electronics, computer,
telecommunications,
systems, control, and
product engineering.

6. Definition of Mechatronics
In 1996, Harashima, Tomizuka, and Fukuda defined
mechatronics as being “the synergistic integration
of mechanical engineering, with electronics and
intelligent computer control in the design and
manufacturing of industrial products and
processes.”
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7. Introduction to Mechatronics
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Mechanical Engineering
Electronics Engineering
Mechatronics

8. 8
Examples of Mechatronics system in day to day life
Watch gears
Printed circuit
boards
Sensors etc.,

9. 9
Examples of Mechatronics system in day to day life

10. 10
Examples of Mechatronics system in day to day life

11. 11
Examples of Mechatronics system in day to day life

12. 12
Examples of Mechatronics system in day to day life

13. 13
Components of a Mechatronics system
INPUT DEVICES
CONTROLLERS
OUTPUT DEVICES

14. 14
System
MotorInput Electric Power Rotation
A system is a collection of elements or
components that are organized for a
common purpose.

15. 15
Measurement System
It has the input as the quantity being measured and the output as a
measured value of that quantity.
Thermometer
Output (Number on
scale)
Input Temperature
Sensing element sensor

16. 16
Elements of Measurement system
Signal conditioner Output devicesSensor
A sensor consists of transducer whose function is to convert the one form of energy into
electrical form of energy. A sensor is a sensing element of measurement system that
converts the input quantity being measured into an output signal which is related to the
quantity.
Sensors
Temperature Sensor –Thermocouple
Input –Temperature
Output –E.M.F (Electrical Parameter).

17. 17
Signal Conditioner
A signal conditioner receives signal from the sensor and manipulates it into a suitable
condition for display. The signal conditioner performs filtering, amplification or other
signal conditioning on the sensor output.

18. 18
Output devices
A display system displays the data (output) from the signal conditioner by an analog or
digital. A digital system is a temporary store such as recorder.

19. 19
Signal processing through microprocessors
Input signal amplification and output signal modulation attained by microprocessors
like Arduino, Rasberry Pi, Arduino Evive etc.,

20. 20
Elements of Measurement system
Signal conditioner Output devicesSensor
A sensor consists of transducer whose function is to convert the one form of energy into
electrical form of energy. A sensor is a sensing element of measurement system that
converts the input quantity being measured into an output signal which is related to the
quantity.
Sensors

21. 21
Mechatronic system
Actuators Sensors
Input signal
conditioning
and
interfacing
Digital
control
techniques
Output
signal
conditioning
and
interfacing
Graphical
displays
Example: Washing Machine

22. 22
System control – open and Closed Loops
Open Loop control system

23. 23
System control – open and Closed Loops
Closed Loop control system

24. 24
Elements of Closed Loop system
Comparison unit
Control unit
Correction unit
Process unit
Measurement Device
This element compares the required or reference variable condition
being controlled with the measured value and produces an error signal
This element decides the corrective action to be taken when an error
signal received, Example – ON / OFF switch
The correction element produces a change in the process to correct or
change the controlled condition.
An element that controls the process is called as process elements
Measuring element produces signal proportional to the physical
conditions

25. Input device that can detect physical condition
such as temperature, pressure, etc., 25
INPUT DEVICES - SENSORS
Sensors
Best
example of
sensor is
human ear
A Mechatronic system
utilizes sensors to detect
the physical conditions

26. 26
Performance Terminologies – Precision and Accuracy
Accuracy Precision
Accuracy of a
measurement is how
close it is to the true
value
How consistent a series
of value are with each
other

27. 27
Performance Terminologies
Resolution Sensitivity
Minimum measurable
value of the input
variable
Ability to detect small
change in the quantity to
be measured

28. Performance Terminologies
Ability to detect small
change in the quantity to
be measured
Sensitivity
The minimum value of input below which no
output can be appeared is known as threshold
Threshold Error
It is the difference between actual
value and the indicated value of a
measuring instrument
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29. Repeatability
Performance Terminologies
Repeatability is the
closeness of agreement
among a number of
consecutive
measurements of the
output for the same
value of input under the
same operating
conditions
Dead Zone
Dead zone is the largest
range of values of a
measured variable to
which the instrument
does not respond.
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30. Performance Terminologies
Hysteresis
Maximum difference for
the same measured
quantity between
upscale and downscale
readings during a full
traverse in each
direction.
True Value
The errorless value of
the measured variable is
known as true value.
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31. Performance Terminologies
Backlash
Lost motion or free play of mechanical elements such as gears, linkages etc.
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32. Performance Terminologies
Bias
The constant error which exists over the full range of
measurement
Tolerance
It is the maximum allowable error in the measurement
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33. Session Recap
Introduction
Applications
System
Mechatronic systems
Open loop and Closed Loop
Sensors
Elements of Mechatronics
systems
Terminologies in
performance of system
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