Preliminary Design Report
2
Table of Contents
Background .................................................................................................................................3
Principles of Operation ................................................................................................................4
System Description and Block Diagrams .....................................................................................5
Power Supply .......................................................................................................................7
User Interface.......................................................................................................................9
Control Unit ....................................................................................................................... 12
Dispensing Unit ................................................................................................................. 15
System Analysis ........................................................................................................................ 17
Extrusion Screw and Housing Design ................................................................................ 18
Motors and Gearing ........................................................................................................... 21
Program Design ................................................................................................................. 22
Project Plan ............................................................................................................................... 24
Organization and Management ........................................................................................... 25
Budget ............................................................................................................................... 26
Gantt Chart Fall 2011 ......................................................................................................... 27
Gantt Chart Spring 2012 .................................................................................................... 28
Pert Chart Fall 2011 ........................................................................................................... 29
Pert Chart Spring 2012 ....................................................................................................... 30
Work Breakdown Structure Fall 2011 ................................................................................ 30
Work Breakdown Structure Spring 2012 ............................................................................ 33
Appendix A: ............................................................................................................................. 36
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