P11228 Week 4

1. P11228Week 4 Japh Learn Joseph Corea Tim Monahan Bryan Reinheimer Ed Gliss

2. Agenda • Morphological Chart • Feasibility Study • Proposed Solution • Logic and Schematics • Preliminary Testing • Clutch Actuation • Actuation Method • Data Collection • System Risks • Timeline • Team Responsibilities

3. Morphological Chart

4. Feasibility Study • Power Source • Hydraulic • Advantages • Fluid is incompressible • Can withstand high line pressures • Precise volume control • Disadvantages • Hydraulic fluid is heavier than air • Leaks pose risk to customer at competition • Reaction time at a given pressure is lower • Hydraulics are more strictly regulated in FSAE • Hydraulic pump requires another power system

5. Feasibility Study • Power Source • Electronic • Advantages • Simple storage device • Does not require any fluids • Most energy dense option • Disadvantages • Heavy • Slow response due to back EMF • FSAE rules on a secondary electronic power source reduce the systems efficiency and increase complexity

6. Feasibility Study • Power Source • Pneumatic • Advantages • Fluid can be vented to atmosphere • Customer familiar with pneumatic systems • Leaks to not pose a health risk or issue for customer during competition • System lockup easily mitigated • Disadvantages • Loss of air pressure results in loss of system power • Recharging the system cannot be done by the customer • Space claim is larger than other options

7. Feasibility Study • Move Clutch Shaft • Cable will be used as mechanical override • Linear actuators are more common for pneumatic systems • Sense Position • Linear potentiometers cannot seal well • Rotary potentiometer can handle environment • Pressure sensors require baseline testing • Manual Override • Both controls will be integrated to system

8. Feasibility Study • Carry System Signal • CAN Bus will allow our system to interface with many other systems quickly and effectively • Process System Signal • Existing ECU does not have functionality we need • Microcontroller will allow design freedom

9. CAN System 00000 000001

10. Feasibility Study • Easy to Fix/Maintain • A mixture of custom and COTS parts will be required • When applicable, COTS parts will be used to lower cost and make repairing easy • Measure Wheel Slip • Customer currently uses wheel speed sensors • Utilize these to minimize complexity and cost

11. Electronic System Logic

12. Proposed Control Circuit See Excel spreadsheet for Bill of Materials

13. Pneumatic System Logic

14. Proposed Pneumatics See Excel spreadsheet for Bill of Materials

15. Proposed Solutions Simulink

16. Preliminary Testing • Clutch Actuation

17. Preliminary Testing • Clutch Actuation

18. Preliminary Testing • Clutch Actuation

19. Preliminary Testing • Actuation Method

20. Preliminary Testing • Data Collection

21. System Risks • Component lead times • Rotary potentiometer (5-7 days) • Pneumatic cylinder (3-6 weeks) • Cost/budgeting • Packaging constraints • Familiarity with involved systems • Engine • Control • System failure • Customer delays • Maintenance time

22. Timeline

23. Timeline See Excel spreadsheet for more extensive timeline

24. Team Responsibilities