week 8 review
DESCRIPTION
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. 3. 1. 4. 2. - PowerPoint PPT PresentationTRANSCRIPT
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
1 3
42
Electrical/Mechanical Head Interface Subsystem Pugh Chart
P14551 1 2 3 4
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
1 1 Linear Alignment (X,Y,Z) D S - +
2 2 Rotational Alignment A S - +
3 3 Active-off Mechanical Connection T + + +
4 4 Reliability of Electrical Connection U S S S
5 5 Amount of Custom Parts M + - -
6 6 Machining Complexity - - -
7 7 Ease of Servicing Unit + - +
8 8 Complexity of Release Mechanism S - S
9 9 Overall Cost ? - ?
10 10
11 11
12 12
13 13
14 14
Total (+) 0 3 1 4
Total (-) 0 1 7 2
Net Score 0 2 -6 2
Motion Control Ideas
4
31
2
Motion Control Pugh ChartP14551 1 2 3 4
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
1 1 Technical Difficulty S - -2 2 Motion System Cost D + - +3 3 Load Bearing Capability S ? -4 4 Accuracy (X) A - S -5 5 Max Drive Speed (X) + S +6 6 Accuracy (Y) T - S -7 7 Max Drive Speed (Y) + S +8 8 Accuracy (Z) U - S -9 9 Max Drive Speed (Z) ? - S
10 10 Maintenance Requirements M - - +11 11 12 12 13 13
14 14
Total (+) 0 3 0 4Total (-) 0 4 4 5
Net Score 0 -1 -4 -1
Storage Subsystem Ideas
1
2
3
4
5
6
Storage Subsystem Pugh Chart
P14551 1 2 3 4 5 6
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
1 1 Required Range of Z Motion D + + + + -
2 2 Complexity of Storage Area Element A - + - + +
3 3 Complexity of Process Head Element T S - + + +
4 4 Machining Complexity U - - S + +
5 5 Estimated Cost M - - - - -
6 6 Added Space Envelope for Storage S - - - -7 7 Stablility Without Power S S S - -8 8 Number of Actuating Elements - - - S S9 9 Precision/Repeatability of storage location - + + S S
10 10 11 11 12 12 13 13
14 14
Total (+) 0 1 3 3 4 3
Total (-) 0 5 5 4 3 4
Net Score 0 -4 -2 -1 1 -1
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