1. 1. By Archana Eadara Samuel Attoye Sai Krishna Prabhala RaviTeja Nalam
2. 2. Archana Outline, Introduction, Background, Working & Sensors Samuel Materials , Mathematical Modelling,Velocity kinematics, RangesVariables Sai Krishna Design, Creo Modelling, Experiment, Apparatus Microcontroller-circuit Ravi Block Diagram, Control Program, Motors, Advantages, Limitations, Future Scope, Conclusion
3. 3. Introduction
4. 4. Project Outline Design and Specification Analysis Modelling Material Research and Acquisition Program and Simulation Documentat ion
5. 5. Claudia Mitchell with her "bionic arm. Photo courtesy AP Photo/Caleb Jones
6. 6. Existing Bionic Arms
7. 7. Sensors
8. 8. Types of EMG
9. 9. Materials And Bionics Bioelectric properties Viability, applications Fatigue, torsional, lightness Resistance to internal ionic environment CHEMICAL INERTNESS MECHANICAL STRENGTH MYOELECTRIC ABILITY COST ease &efficiency of Arm manipulation
10. 10. Materials And Bionics Bioelectric properties Viability, applications Fatigue, torsional, lightness Resistance to internal ionic environment CHEMICAL INERTNESS MECHANICAL STRENGTH MYOELECTRIC ABILITY COST Osseointegration & infection Cotrol efficiency
11. 11. Materials And Bionics material characteristics of interest bionics application carbon-fiber composites : graphene impervious to ionic solutions in human body, good conductivity cannot be switched like silicon thus poor digital application relevant properties viably manipulated at subatomic level bioelectronics, nanotechnology, chemical vapour deposition cardiovascular implants, biological sensing- analogue applications (ear and eye implants nanocomposite polymers impervious to ionic solutions in human body, good conductivity, relevant properties viably manipulated at subatomic level bioelectronics, nanotechnology, stem cell technology cardiovascular implants modern and advanced plastics (polypropylene, polyethylene, polypropylene, acrylics, and polyurethane) required mechanical properties, lightweight, relevant properties viably manipulated at subatomic level bioelectronics, nanotechnology, applied in all joints Inherently conductive polymers (ICPS) polypyrroles, polythiophenes and polyanilines good myoelectric conductivity, lightweight relevant properties viably manipulated at subatomic level bioelectronics, nanotechnology, applied in all joints polyester resin lightweight laminations in prosthetics acrylics fibers highr durability than polyester resins high malleability, water resistant prosthetic socks aluminium and silicon oxides in stabilizer substrates ability to conduct electricity, oxide layers trap ions causing interference, relevant properties viably manipulated at subatomic level bioelectronics p-t metallization and firing (electrode forge welding in a metallized feed-through diamond nanocrystals inflexible, poor conductivity relevant properties viably manipulated at subatomic level bioelectronics, retinal implants titanium alloys required mechanical properties and more lightweight relevant properties viably manipulated at subatomic level
12. 12. Ranges ForVariables Base frame: shoulder joint 60 - + Joint 1: elbow joint:60 - + Joint 2: wrist joint:0 - +
13. 13. Mathematical Modelling = 1000 0010 sinsincos0sin coscossin0cos 11122123123 11122123123 aa aa
14. 14. Mathematical Modelling =
15. 15. Design of the Prototype Bionic arm The mathematical modelling and the range of joint variables are used to design a prototype arm model. A solid model is rendered from the Creo Parametric developed by PTC. A control mechanism is developed using a microcontroller circuit. A light weight, prototype physical arm model is made to test the control mechanism. Potentiometers are used as sensors (input). The servo motors are used to move the joints of the arm(output).
16. 16. Solid Modelling by Creo Parametric 3 Degrees of Freedom Shoulder, elbow , wrist and gripper. The Blue shoulder support is fixed and the other parts move. Shoulder joint 240 deg. elbow
17. 17. Design Simulation
18. 18. Experimental Setup
19. 19. USB to Computer