It describes that how to control the mechanical position of shaft using arduino

1. Servo motor controller
Using Arduino
1PICTURE OF SERVO MOTOR

2. PRESENTED BY:-
JITENDRA SUWASIYA (2013/IEE/001)
AMIT KUMAR (2013/IEE/036)
ANIL KUMAR (2013/IEE/042)
GUIDED BY:-
Mr, Bishnu mohan Jha sir
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3. Introduction to Arduino
Arduino is an open-source prototyping platform
based on easy-to-use hardware & software and
are able to read Inputs.
 Arduino Boards has mainly 3 types of signal
ports:
• (i)Digital ports : means something is either on or
off
• (ii)Analog ports : means it can have a continuous
range of values.
• (iii)Power ports : it provides the power supply.
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4. 4PICTURE FOR ARDUINO

5. Introduction to Servo Motors Control &
Arduino
A servo is a motor that we can command to
go to particular angle .
A servo has 3 pins:
 (i) Power (normally red)
 (ii)Ground (normally black)
 (iii) Signal pin (normally white)
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6.  Servos are given a command of what angle to
be turn (between 0 deg. & 180 deg.) and turn
precisely to that location.
The Arduino language has support for servos
built-in which makes the servos really easy to
use.
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7. PARTS Of Servo Motor
It consists of a suitable motor , position sensor
and a sophisticated controller.
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8. Working Principle Of Servo Motor
 Servo-motors are used to control position and
speed very precisely , but in a simple case ,
position may be controlled.
Mechanical position of the shaft can be sensed
by using a potentiometer , which is coupled with
the motor shaft through gears .
The current position of the shaft is converted in
to electrical signal by the potentiometer , and
compared with command input signal.
If the feedback signal differs from the given input,
an error signal is generated.
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9. This error signal is then amplified and applied
as the input to the motor , which causes the
motor to rotate . And when the shaft reaches
to the required position , error signal become
zero.
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10. Advantage of servo motor controlling
 Continuous duty
 Reversible.
 Speed is proportional to the applied voltage.
 Torque is proportional to the current.
 Very efficient
 No power required to hold a static load in position
 Flat speed –torque curve
 Peak torque available for short period of time
 Smooth rotation at low speeds
 Good up to 3,000 R.P.M.
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11. Future trends in servo
Due to increase of Automation and development
of new application of servo system it has a high
scope in future.
Due to price reduction there is a beneficial effect
on growth of servo system in future.
Due to continuous technology improvement in
this electronic device it has high scope in future.
The servo drives sector is benefiting from the
popularity of intelligent drives that combine drive
and controller capabilities ,which leading it
towards high growth .
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12. Summary
Servo control system reduces the error of the
system and improves the output mechanism.
Due to blocking of error, the efficiency of the
device decreases.
It is easier to design and implement.
It can operate on both AC or DC.
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13. Reference
Introduction to servo system : By I.A. Getting.
Servo control system :By Elke Laubwald
www.uotechnology.edu.in
www.toolingu.com
Arduino software library (Programming)
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