January 24rd, 2013

Additional Concepts

and Communication

Overview

• Concepts from Kumoh and Budapest• Flexible/expandable wheel concepts• Communication with International Teams

• SPECIFICATIONS– For current version of specifications sheet, see

Google Document

Concepts from Kumoh and Budapest

Quadrotor with Solar Charger

• Solar cell in center of quadrotor (enough current to power microprocessor?)

• Arms fold up to protect during landing

Rolling Concept

• Motor powers inner ball, which rolls on inside of outer ball

Guiding Principles #1• In order to avoid double effort on control design:

we should navigate on the ground or in the air but not both

• If we want to navigate in the air, wings are better than helicopter (rotor/propellers providing downward thrust) concept from the viewpoint of energy efficiency

Guiding Principles #2

• To avoid getting blown away by wind, the parachute should be opened late in the descent

• If we make a flying robot, it should be naturally stable – flying robots can be very difficult to control if they are too reliant on fast/accurate feedback of pose (attitude)

Rover with Inflatable Wheels

Ornithopter

http://youtu.be/nn69_9X3aZ4

Rover with Compressed Air Propulsion

Falling Propeller-Driven Robot

Flexible/Expanding

Wheel Concepts

One-Piece Wheel/Suspension System

http://www.societyofrobots.com/mechanics_robot_suspension_system.shtml

Flapped Grinding Wheel

Dual Pod Transport

http://www.tuvie.com/dual-pod-transport-is-a-two-wheeler-with-off-road-capabilities/

Segmented Wheel

http://www.apparatusgame.com/level.php?id=18366

Flexible Tape

http://www.qrbiz.com/product/384464/flexible-tape-and-sprocket-wheel.html

Beartex Polishing Wheel

http://www.jewelerstoystore.com/Beartex_Wheels_p/w556.htm

Team Communication

Time Differences (Relative to Atlanta)

• Budapest, Hungary:• Patras, Greece:• Madras, India:

• Gumi City, South Korea:

+ 6 hours+ 7 hours+ 11 hours+ 14 hours

Communication

• RescueBot website• Online meeting software• Weekly meeting (Skype? Phone? Other?)

– Assuming one country at a time– Split each team of Tech students into two groups?

File Sharing

• RescueBot Website• Dropbox account• Google account (use Drive)

International Kickoff Meeting

• Describe RescueBot project in detail• Find out interests/abilities• How to split specialized teams?

– All EE (for example) from same country, or– Students from multiple countries?

• How to split robot production?– Two groups, each working on one design, or– Farm-out tasks from both designs to specialties?