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Introduction Project Objectives Team Construction Controls Results Web Development Conclusions Questions
Objectives Each group must design, construct, and
control a DC homemade motor, commutation system, control system, and a speed measurement device such that the machine assembly rotates at selected speeds.
Build a motor capable of turning 100-900 rpm
Control the motor within 10 rpm
Team Structure
Mark GoettschGroup Leader
Control Group Construction Group
Mark Goettsch
Jason Varner
Shawn Peterkin
Misty Maddox
Brad Peterson
Construction Armature Shaft and Insulation Windings Stator and Magnets Baseplate, Bearings and Supports Encoder Mounting Problems
Armature Plates
3/16” thick steel plates
2.5” diameter 17 total for
approximately 3” 8 slots, ½”
diameter
Shaft and Insulation
Shaft
Steel 5/8” Diameter 20” Long 4” cut down to
3/8” diameter to fit encoder
Insulation
Polyurethane spray from Lowe’s
4 or 5 coats Insulation Paper
Magnets 2 Pole ¼” thick Arc shaped 1.875 long 12 total 60 degrees of
separation between magnet pairs
Bearings and Support Steel baseplate
and support plates
Steel encoder plate
Pillow block bearings5/8” diameter
Commutator Brushes Helwig Carbon
Brushes Concave Radius 0.375x0.750x1.00
0
Copper over PVC 1.5” Long 8 segments
ResultsBonus Day
Mounted Motor Unable to Spin 6 Points
Competition Day
300-500 rpm range
±2 rpm for 320, 400 and 480
30/30 points for steady-state
No points awarded for transient
Acknowledgements US Digital Corporation
11100 NE 34th CircleVancouver, WA 98682 USAhttp://www.usdigital.com/
Electric Motor and Drives
2417 Hwy.29 N.Anderson, SC 29621http://www.emd-inc.com
Owens Corning
412 W Whitner StreetAnderson, SCwww.owenscorning.com/
Oconee Machine and Tool
2319 Sandifer Blvd.Westminster, SC 29693