week 5 status updates 6/23/08 – 6/27/08. attitude control system update 6-23-08day 39
TRANSCRIPT
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Week 5 Status Updates6/23/08 – 6/27/08
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Attitude Control System
Update 6-23-08 Day 39
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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
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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
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Pert Chart!
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Attitude Control System
Update 6-24-08 Day 38
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This Morning with Jeff:
• CubeSat resources on Stanford site• Hysteresis rods• Talk to Rebecca about coil geometry• Other satellite stories and fun
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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
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New Tasks
• Task Delineation:-Research control methods: Lorraine, Jacob-Develop PIC software: Dan, Lorraine-Mechanical Design: Christina-Circuit Design: Dan, Lorraine-Overall integration of Design All-Website updates Christina
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Attitude Control System
Update 6-25-08 Day 37
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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
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Attitude Control System
Update 6-26-08 Day 36
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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
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This Afternoon:
• PIC stuff• Mechanical design in Solidworks• Fix roll problem in control algorithm
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Attitude Control System
Update 6-27-08 Day 35
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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
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Deliverables:
• Prototype Demonstration•Executes all 4 control tasks•Not test with time/power requirements
• Control Software and manual• Paper