1. Week 8 review

2. Agenda Critical Subsystems – Electrical/Mechanical Head Interface Subsystem – Motion Control Subsystem – Storage Subsystem Sub-Critical Subsystems Non-Critical Subsystems

3. Electrical/Mechanical Head Interface Subsystem Ideas 1 3 4 2

4. Electrical/Mechanical Head Interface Subsystem Pugh Chart P145511234 EMHI Subsystem Tongue and Solenoid with 2 Alignment Pins Shaft and Solenoid with 1 Alignment Pinn Solenoid Driven Locking Arms Ball Bearing/Roller Bearing Alignment Parameter Number Criteria Number Conceptual Image Judgement Criterion 11Linear Alignment (X,Y,Z) DS-+ 22Rotational Alignment AS-+ 33Active-off Mechanical Connection T+++ 44Reliability of Electrical Connection USSS 55Amount of Custom Parts M+-- 66Machining Complexity --- 77Ease of Servicing Unit +-+ 88Complexity of Release Mechanism S-S 99Overall Cost ?-? 10 11 12 13 14 Total (+) 0314 Total (-) 0172 Net Score 02-62

5. Motion Control Ideas 4 3 1 2

6. Motion Control Pugh Chart P145511234 Process Head Storage Subsystem Basic Cartesian Ball & Belt Drive Basic Cartesian Lead & Chain Drive Complex Cartesian Ball & Belt Drive Wench - Cable Drive Parameter Number Criteria Number Conceptual Image Judgement Criterion 11Technical Difficulty S-- 22Motion System Cost D+-+ 33Load Bearing Capability S?- 44Accuracy (X) A-S- 55Max Drive Speed (X) +S+ 66Accuracy (Y) T-S- 77Max Drive Speed (Y) +S+ 88Accuracy (Z) U-S- 99Max Drive Speed (Z) ?-S 10 Maintenance Requirements M--+ 11 12 13 14 Total (+) 0304 Total (-) 0445 Net Score 0-4

7. Storage Subsystem Ideas 1 2 3 4 5 6

8. Storage Subsystem Pugh Chart P14551123456 Process Head Storage Subsystem Horizontal Pins with Z Motion Horizontal Pins with Spring Loading Solenoid-Driven Pin Locking (Back Plate) Solenoid-Driven Pin Locking (Side Plates) Magentic Storage Vertical Pins with Z Motion Parameter Number Criteria Number Conceptual Image Judgement Criterion 11Required Range of Z Motion D++++- 22Complexity of Storage Area Element A-+-++ 33Complexity of Process Head Element TS-+++ 44Machining Complexity U--S++ 55Estimated Cost M----- 66Added Space Envelope for Storage S---- 77Stablility Without Power SSS-- 88Number of Actuating Elements ---SS 99Precision/Repeatability of storage location -++SS 10 11 12 13 14 Total (+) 013343 Total (-) 055434 Net Score 0-4-21

9. Sub-Critical and Non-Critical Subsystems Sub-Critical Subsystems Enclosure Safety System Power Supply Exact HRMT Design Computer Controller Non-Critical Subsystems User Interface Bed System