1. P11228 Week 3 Japh Learn Joseph Corea Tim Monahan Bryan Reinheimer Ed Gliss

2. Agenda Customer Needs Engineering Specs System Level Work System Risks Plans for Week 4

3. Customer Needs “Go faster” Manual override –Easy to actuate Internal energy source Minimal impact on car electrical system Actuate at least as fast as driver High sensor resolution Operate for the entire endurance event Minimal mass Control system in low temperature environment Rapid maintenance

4. Engineering Specifications “Go faster”< 4 sec Manual overrideY/N –Easy to actuatelb f Internal energy sourceY/N Electrical system impactmax 2.3A, 14v As fast as driver< 200 ms

5. Engineering Specifications Sensor resolutiondeg,in,psi/bit Entire endurance> 200 shifts Minimal mass6-8 lb System environ< 80°C Rapid maintenance < 2 hr

6. System Level – Functions Sensing Position Rotary Potentiometer (deg/bit) Linear Potentiometer (in/bit) Pressure (psi/bit) Actuate Clutch Electronic (lb/A) Hydraulic (lb/psi) Pneumatic (lb/psi) Override Clutch Manually Electronic Control (deg/bit) (in/bit) Hand Cable (lb) Control Actuation System MoTEC (#I/O) CAN (bits/s) Microcontroller (bits/s) Automated clutch system to achieve maximum acceleration performance through tire/engine optimization

7. System Level – Logic

8. System Level – Pneumatics

9. System Level – Packaging

10. System Risks Component lead times –Linear potentiometer(4-6 weeks) –Rotary potentiometer(5-7 days) –Pneumatic cylinder(3-6 weeks) Cost/budgeting Packaging constraints Familiarity with involved systems –Engine –Control Failure Customer delays Maintenance time

11. Plans for Week 4 High level feasibility studies Functional decomposition –Determine clutch activation parameters –Determine ability to modulate clutch position –Determine necessary system resolution Define system architecture Start Simulink model