mech biomechatronic hand ppt
TRANSCRIPT
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GUIDED BY Presented byA.GODHAVARI M.Tech., P.Lakshmi prasanna
Asst.Prof, HOD 123M1A0438
BIOMECHATRONIC HAND
MODUGULA KALAVATHAMMA INSTITUTE OF TECHNOLOGY FOR WOMEN
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CONTENTS
INTRODUCTION WORKING DESIGN OF HAND PROTOTYPE POSTION AND FORCE SENSORS FINGERED TIP FORCE ANALYSIS ADVANTAGES DISADVANTAGES CURRENT RESEARCH CONCLUSION REFERENCES
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INTRODUCTION In medicine, a prosthesis is an
artificial extension that replaces a missing body part. It is part of the field of biomechatronics.
Prostheses are typically used to replace parts lost by injury (traumatic) or missing from birth
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WORKING
Biomechatronics devices have to be based on how the human body works.
First, impulses from the motor center of the brain are sent to the foot and leg muscles.
Next the nerve cells in the feet send information to the brain telling it to adjust the muscle groups
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DESIGN OF HAND PROTOTYPE
Actuator System Architecture In order to match the size of a human finger, two
micro motors have been integrated within the pal The selected micro motors are Smoovy (RMB,
eckweg, CH) micro drivers (5mm diameter) high precision linear motion using lead screw transmission.
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POSTION AND FORCE SENSORS
Sensors Sensors are used as peripheral devices
in robotics include both simple types such as limit switches .,
tactile sensor proximity and range sensor miscellaneous types machine vision
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USE OF SENSORS IN ROBOTICS
The major use of sensors in robotics and other automated manufacturing systems
Safety monitoring. Inter locks in work cell control. Part inspection for quality control. Determining position and related
information about objects in the robot cell.
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POSITION SENSORS
A position sensor, based on the Hall Effect sensor is mounted at each active joint of the hand.
The main advantages of Hall Effect sensors are there small sizes and their contact less working principle.
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FINGERED TIP FORCE ANALYSIS
A first set of experimental test has been performed in order to evaluate the force that the index /middle finger is able to exert on an external object.
The pushing action is exerted only by the distal actuator.
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ADVANTAGES
Handicapt can lead an independent life. Noiseless operation cost suitable for support by the health
insurance system.
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DISADVANTAGES Implementation cost is highly expensive. It can’t withstand a load of more than 40 N.
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CURRENT RESEARCH University of Michigan: Human
Neuromechanics Laboratory University of California, Berkeley:
Robotics Laboratory University of California, Irvine:
Biomechatronics Laboratory
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CONCLUSION
The biomechatronic design consists of integrating multiple DOF’S finger mechanisms, multisensing capabilities and distributed control inorder to obtain human like appearance, simple and direct controllability and low mass.
Implementing a neural of the hand by means of interfaces implanted at peripheral nerves of the amputee is very challenging.
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REFERENCES www.wikipedia.com www.studymafia.org www.google.com
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ANY QUIRES ?
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THANKS