Thermo-Cooler Controller Kiefer, Mary, Molly, Sam

Final SOW We will create a robust controller system that reduces, filters, and controls a 12V signal to regulate a thermoelectric cooler to cool the cold side temperature down to 200K (+/-.1K) in less than five minutes.

WBS 1. Research A. Basic Thermodynamics, Thermoelectrics, PCB basics, Transport B. Papers on modeling TECs C. Literature on Controller Systems (PID/PWM) D. Look at parts we need (TEC, temp sensor, components for vacuum setup) 2. Software A. Virtual Model B. Software Model C. Basic PID control (step-by-step, if statements—think forced PID control) D. Software Testing (test different controllers) E. Software Tweaking

WBS (cont.) 3. Hardware A. Order parts from TE Technology B. Order parts for vacuum setup C. Design Circuit (temp sensor, PIC) D. Program PIC E. Build baseplate with electrical feedthrough F. USB connection (SW  HW interface) G. Build Circuit H. Connect SW, connection, HW together 4. Testing A. First run on real TEC B. Tweak and Test and Tweak and Test

WBS (cont). 5. Other A. Website i. Functional—access to documentation ii. Learn html/CSS iii. Design actual website iv. Create actual website v. Modify (daily posts) B. Final Report i. SOW ii. PERT iii. Track progress iv. Compile documentation

PERT Re-directing your attention to an Excel Sheet

Current Assignments Order parts by today ▫Waiting on info about P-card Hope our parts come sooner rather than later Work on software controller Design circuit Design USB connection