APPLICATION OF ELECTRIC & ELECTRONIC DRIVES

IN

ROBOTICS

Present by:-Ashutosh Pd. ShahiBranch-Elect. Engg.Reg.-1001211216Roll No.-1105116 ’B’

Guided by Dr.-D. P. Das

CONTENTS

Introduction History Electric Drives

• DC SERVO MOTOR• DC STEPPER MOTOR• BLOCK DIAGRAM OF ELECTRIC DRIVE

Electronic Drives Application Conclusion

WHAT IS ROBOTICS?

Robotics is the branch of technology that deals with the design, construction, operation, and application of robots, as well as computer systems for their control, sensory feedback and information processing.

These technologies deal with automated machines that can take the place of humans in dangerous environments or manufacturing processes, or resemble humans in appearance, behaviour, and/or cognition.

HISTORY

Elektro(1939)Westinghouse Electric Corporation

Electro is the nickname of a robot built by the Westinghouse Electric corporationbetween 1937-1939. it could be walk by voice command, speak about 700words,smoke cigarettes and move his head and arms. Elektro’s body consisted of a steelgear, cam and motor skeleton covered by an aluminum skin.

ELECTRIC DRIVES The electric drive

systems are capable of moving robots with high power or speed.

• This types of robotics operation can be done by either DC servo motors or DC stepping motors.

• The electric drive system will be perfect for small robots and precise applications. Most importantly, it has got greater accuracy and repeatability

DC SERVO MOTOR

A servomotor is a rotary device that allows for precise control of angular position, velocity and acceleration.

It consists of a motor coupled to a sensor for position feedback.

INTERNAL VIEW OF DC SERVO MOTOR

DC STEPPER MOTOR

A stepper motor is a brushless DC electric motor that divides a full rotation into a number of equal steps.

The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor.

It is an open-loop controller.

INTERNAL VIEW OF DC STEPPER MOTOR

BLOCK DIAGRAM OF AN ELECTRIC DRIVES

POWER REQUIREMENT

In general these type of electric drives require 12V or 24V for its operation

We can convert the 220V,50Hz ac into dc by the help of rectifier

The speed of these drive can be control by PWM control

IC 7805 use for conversion of voltage range 9-38v to 5v for electronic equipment.

MICRO CONTROLLER ATMEGA 32

An integrated circuit, or IC, is small chip that can function as an amplifier, oscillator, timer, microprocessor or even computer memory.

It is build from semiconductor materials, normally Silicon.

In present scenario an IC contain 1billions of transistor.

BLOCK DIAGRAM AND SPECIFICATION OF ATMEGA 32

Parameter valueVcc 4.5-5vPin 40RAM 32KbFrequency 16 MHzCPU 8-bit AVRMax I/O Pins 32Temp. -40 to

85CLK 3EPROM 1B

SENSORS

A mechanical device sensitive  to light, temperature, radiation level etc, that transmits a signal to a measuring or control instrument.

Temperaturesensor Light

sensor

Soundsensor

Objectsensor

LED SENSOR

Fig.1 Fig.2

Fig.3 Fig.4

APPLICATION

Weight lifting Protection Medical operation Welding Work in space Inspection Becoming a hero in movies Military

LINE FOLLOWER ROBOT

ATMEGA 32

LEDSENSOR

L293D IC7805

CONCLUSION

The robots are an amazing technological advancement

This will allow people save their time and precise life in a more productive manner

The robots provide a number of positive contributions to human beings

The degree of accuracy is very high

ACKNOWLEDGEMENTS

http://en.wikipedia.org http://www.slideshare.net/ https://www.google.co.in/

ANY QUERIES