Week 8 review

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

Electrical/Mechanical Head Interface Subsystem Ideas

Electrical/Mechanical Head Interface Subsystem Pugh Chart P 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 Ease of Servicing Unit Complexity of Release Mechanism S-S 99Overall Cost ?-? Total (+) 0314 Total (-) 0172 Net Score 02-62

Motion Control Ideas

Motion Control Pugh Chart P 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 Total (+) 0304 Total (-) 0445 Net Score 0-4

Storage Subsystem Ideas

Storage Subsystem Pugh Chart P 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 Complexity of Storage Area Element A Complexity of Process Head Element TS Machining Complexity U--S++ 55Estimated Cost M Added Space Envelope for Storage S Stablility Without Power SSS-- 88Number of Actuating Elements ---SS 99Precision/Repeatability of storage location -++SS Total (+) Total (-) Net Score

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