1. Week 5 Status Updates 6/23/08 – 6/27/08

2. Attitude Control System Update 6-23-08Day 39

3. Since last Meeting: Have not met as a group since last status update Emailed Vanderlei last night asking for resources on coil design and the IDL orbit simulation software Have received email back from Brian Bingham, suggested using PID control

4. This Afternoon: Modeling: Debug new problem in model Coil Optimization: Waiting for Vanderlei reply, plan to finish ASAP Delineate new tasks this week: -Research control methods -Develop PIC software -Mechanical Design in Solidworks -Circuit Design -Overall integration of Design -Website updates

5. Pert Chart!

6. Attitude Control System Update 6-24-08Day 38

7. This Morning with Jeff: CubeSat resources on Stanford site Hysteresis rods Talk to Rebecca about coil geometry Other satellite stories and fun

8. Model: Resolved issue with model – Turns out it was an animation issue, not a computational issue Withstood verification Even went through Gimble Lock, only caused a momentary singularity Coil: Decided on coil design Begun Solidworks of first prototype CubeSat

9. New Tasks Task Delineation: -Research control methods: Lorraine, Jacob -Develop PIC software:Dan, Lorraine -Mechanical Design: Christina -Circuit Design:Dan, Lorraine -Overall integration of DesignAll -Website updatesChristina

10. Attitude Control System Update 6-25-08Day 37

11. Control Algorithm: Working on PID algorithm Have outline of algorithm, and Simulink code that doesn’t work yet Design Updates: Mech Design: Christina Solidworks-ing since yesterday Electrical Design: Acquired equipment-PIC and connector kit Other Updates: Website up to date Magnetometer

12. Attitude Control System Update 6-26-08Day 36

13. Control Algorithm: Working PID algorithm for aligning with sun: demonstration… Correctly aligns to the sun’s axis; however, does not stabilize roll Further verifies model Other Updates: We have bought a magnetometer! http://www.sparkfun.com/commerce/product_info.php?products_id=244 http://www.sparkfun.com/commerce/product_info.php?products_id=244

14. This Afternoon: PIC stuff Mechanical design in Solidworks Fix roll problem in control algorithm

15. Attitude Control System Update 6-27-08Day 35

16. Control Algorithm: Trying to stabilize roll Can measure roll axis via magnetometer, but trying to eliminate the roll is problematic Other Updates: Plan to order materials today Going though POE labs to learn PIC stuff

17. Deliverables: Prototype Demonstration Executes all 4 control tasks Not test with time/power requirements Control Software and manual Paper