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SOLO SOCCER TRAINER. Team 16: Mechanical Engineering Dalhousie University Senior Design Project Supervisor: Dr. Warkentin Dec. 4 th 2012. Agenda. Team Roster. Project background. 3.5 Billion Fans. Oldest & Universal Sport. Vital Component. Ref: 1,2,3. Project background.
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SOLO SOCCER TRAINER Team 16: Mechanical Engineering Dalhousie University Senior Design Project Supervisor: Dr. WarkentinDec. 4th 2012
Project background 3.5 Billion Fans Oldest & Universal Sport Vital Component Ref: 1,2,3
Project background • Penalty kick stat: • Only 12% goalie save rate! Our project will attempt to aid in the solo soccer training process to improve the chances of successfully saving a goal. Ref: 4
How’s it different?? • Many “sports” machines. • Ref: 5,6,7
How’s it different?? • Many “sports” machines. • Previous design projects. • Ref: 8,9
How’s it different?? • Many “sports” machines. • Previous design projects. • Differences: • Largest object launched • Only the goalie • Randomized • Automatic • Self Feed • Ref: 10
criteria • The device should be able to launch the soccer ball into 5 set launch points (top left, top right, bottom left, bottom right and center). • The device should be able to launch a soccer ball to a random order of set points.
criteria • The device should be able to launch a soccer ball to a random order of set points. • The device should be able to launch the soccer ball into 5 set launch points (top left, top right, bottom left, bottom right and center). • The device should be able to launch from the penalty line—36 ft (11 m) from net. 36 ft
criteria • The device should be able to launch a soccer ball in a random manner. • The device should be able to launch the soccer ball into 5 set launch points (top left, top right, bottom left, bottom right and center). • The device should be able to launch from the penalty line—36 ft (11 m) from net. • The device should be able to be set up by a single person. • The device should be transportable by truck and movable a single person. • The cost to build device should be no more than $2000 CND. • The device should operate at a reasonable shot interval of no more than 20 seconds. • The device should be safe.
Velocities & angles Top Corners: V =19 m/s θ = 17° Bottom Corners: V =18 m/s θ = 5° Side view
Velocities & angles Top View 36 ft 18° 18°
TIMEOUT: • General Design Idea Dual Spinning Disks Soccer Ball
Phase Two: Deformation • Ffriction Fpull • Fdeformation • (μs + κ)FN ≈ Ffriction+ Fdeformation= Fpull
TIMEOUT: • Deformation Relation Fdeformation ≈ function of the shapes. Ffriction ≈ function of materials. FBD of kinetic system
Dead Centre FBD =βV Fthrust = Fcoulomb+ Fviscous Fkinetic Fdeformation
Friction & Velocity β slope • Ref 11 : US Dept of Transportation: Friction: Analytical and Field Investigation
Forces & work • ∑Fthrust = ∑ Fcoloumb + ∑ Fviscous+ ∑ Fdeformation
DESIGN • Mechanical
Final design • Frame • 1.5x1.5x.188 steel or aluminum tubing • Wheels • Overall Dimensions: • LxWxH48"x40"x27" • Motors • Actuators • Feed Mechanism • Mobility • Locking Wheels
Mechanical : Tires • Cheap energy storage • Radius effects width • Radius/Mass effect energy • Rated at our speeds • Opportunity for tuning • Ref: 12
Mechanical : Motors • Energy source • Shot recovery • Launch speed • 2 Motors (Spin?) • AC (Plug In) • Electrically Reversible (VFD) • 0-1800 RPM • 0.5HP Ref: 13
Mechanical : Actuators • Stroke • 12” • Yaw • -23° to +23° • Stroke • 9” • Pitch • 0° to 20°
Mechanical : Feed • Gear Motor • Lead Screw • Rail Design • Slider
DESIGN • Electrical & Control
RANDOMLY SELECT TARGET ON NET PARAMETER LOOK-UP TABLE: LAUNCH MOTOR SPEED YAW ACTUATOR LENGTH PITCH ACTUATOR LENGTH START SET LAUNCH MOTORS ANGULAR VELOCITIES COMPARE ACTUAL EXTENDED LENGTH TO DESIRED VALUE (PITCH ANGLE) MEASURE EXTENDED LENGTH (PITCH ANGLE) MICROCONTROLLER LOGIC OUTPUTS TO DRIVER SYSTEMS COMPARE ACTUAL EXTENDED LEGNTH TO DESIRED VALUE (YAW ANGLE) MEASURE EXTENDED LENGTH (YAW ANGLE) SINGLE BALL IS LAUNCHED SET PITCH ACTUATOR EXTENDED LENGTH ENGAGE LOADING MECHANISM (LEAD SCREW) SET YAW ACTUATOR EXTENDED LENGTH RETURN TO START
Safety Considerations • Emergency Stop. • Safe Guarding. • Tire Enclosure • Electrical Enclosure • Ref: 14
Further Considerations • FEM Analysis. • Building. • Physical Testing. • Practise, Practise, Practise! • Ref: 4
Summary • One of a kind device. • No need for “extra” user. • Random • Automatic • Self Feed • Ample initial testing. • Great challenge for the winter! • Website & Contact • http://poisson.me.dal.ca/~dp_12_16/
Thanks to : Mechanical Engineering Department Shell Canada Dr. Militzer Dr. Warkentin
Special Thanks to : Dr. Bauer Blair Nickerson Jesse Keane Peter Jones John Macdonald
References • http://multipletext.com/2011/8-soccer-in-ancient-china.htm • http://soccerstl.net/2012/09/28/slu-billikens-host-uca-for-homecoming-saturday/slu-billikens-soccer-fans/ • http://tallhorsewines.wordpress.com/2010/04/21/soccer-goalies-should-wear-red/ • http://www.footy.dk/2012/09/26/video-arets-redning/soccer-goalie-trying-to-block-goal/ • http://www.justbaseball.us/Qstore/Qstore.cgi?CMD=011&PROD=1129084852 • http://www.sports-inter.com/en/football/jugs-football-machine-6662.details.html • http://www.fitness-sports.co.uk/tennis/TENNIS-TNTM-2.html • http://poisson.me.dal.ca/~dp_11_02/ • http://poisson.me.dal.ca/~dp_08_06/ • http://www.academy.com/webapp/wcs/stores/servlet/Product_10151_10051_347881_-1 • http://www.fhwa.dot.gov/publications/research/infrastructure/bridge/05083/appendf.cfm • http://www.canadiantire.ca/AST/browse/4/Auto/Towing/TrailerTires.jsp • http://www.gallantmotor.com/acvsdc • http://banat4today.blogspot.ca/2011/09/boys-will-be-boys.html • http://www.cox.com/support/cable/nopic_gothere.asp • http://www.google.com.ng/local/trader/listing/-/6ad652a88a7f42ec/_b7b61055202e8df1_
Navigation Table • Introduction • Project Background(#4&5) • Not your average Launching Machine(#8) • Requirements • Criteria(#10-12) • Initial Velocity & Angles(#13 &14) • Testing • Phase One: Compression(#16 &17) • Phase Two: Deformation(#18-20) • Friction(#25) • Backup Slides • Analysis • Kinetic FBD(#22-24) • Energy Balance(#26-27) • Design • Final Design(#29) • Mechanical(#30 - 33) • Electrical(#34 - 37) • Safety(#38) • Conclusion • Budget(#39 & 40) • Further Considerations(#41) • Summary (#42)
Back up slides • Kinematic Equations • Top Corner Analysis • Bottom Corner Analysis • Drag • Thrust Force • AC VFD • DC Diagram • Custom Hub • AC Power
Why ac power?? • Availability at test locations • Cost • Ref: 15, 16