Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS)...
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![Page 1: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/1.jpg)
Week 7 Status Updates
![Page 2: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/2.jpg)
Statement of Work:
To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with the desired direction as supplied by the Solar Sensor through magnetorquing using the Earth’s magnetic field. Our final deliverable will be a prototype and the control software.
Attitude Control System
Update 6-11-08
![Page 3: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/3.jpg)
Questions for Vanderlei:
• Do we know the satellite’s location? (GPS, etc)• Do we need translational force from the ACS, or just torque? Is some unintended translation along with the rotation okay?• What is the intended time frame for the aligning the satellite? Or is there a torque requirement?• How much tumbling is expected?• Is it viable to use superconducting coils? Most CubeSats use copper wire, but this CubeSat may be different.• What is our power budget in relationship to other instruments on the CubeSat?• How much room are we allotted in the CubeSat for the ACS?
![Page 4: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/4.jpg)
Start End PeopleResearch
Learn C for PICs now later deadline Lorraine and DanResources for Circuit Design now later deadlineExisting Systems now Fri 49 Christina & JacobRotational Physics now Fri 49E&M Review now Fri 49Control Methods Mon 46 later deadline Christina and JacobSatellite Orbits now Fri 49
Brainstorm Fri 49
ModelTheoretical Calculations Mon 46 Fri 42MATLAB Mon 46 Fri 42COMSOL - Optimization later
Design Prototype
Mechanical - SolidworksSoftware DesignCircuit Design - HardwareIntegration
Everything working togetherconnect with SOS
Prototypeorder materialsmachiningtestingfix
Final Deliverables Mon 4 Fri 0papereverything else
![Page 5: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/5.jpg)
Statement of Work:
To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with the desired direction as supplied by the Solar Sensor through magnetorquing using the Earth’s magnetic field. Our final deliverable will be a prototype and the control software.
Attitude Control System
Update 6-12-08 Day 50
![Page 6: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/6.jpg)
Research:
• Response from Vanderlei answering our questions, includes information about existing systems:
http://userpages.umbc.edu/~martins/cubesat/ACS/• Lecture from Steve on rotational physics (tensor style) and satellite physics• Software Team continued learning of C++
![Page 7: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/7.jpg)
![Page 8: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/8.jpg)
Attitude Control System
Update 6-13-08 Day 49
![Page 9: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/9.jpg)
Model Outline:
• Have satellite in magnetic field, model rotation due to coil torques• Ignore orbit of satellite, separate problem• Finish by Friday, allow for testing of control algorithms
Environment/Model
Control Unit
Angular Velocity, AttitudeCoil Currents
![Page 10: Week 7 Status Updates. Statement of Work: To design and prototype an attitude control system (ACS) for a Cube-Sat. This ACS will align the Cube-Sat with.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f115503460f94c246bb/html5/thumbnails/10.jpg)
Task Delineation:
• MATLAB Modeling: Dan, Christina, Jacob• Coil Design: Lorraine, Jacob• Control Research: Dan, Lorraine, Christina• Website: Christina• Learn C Programming: Lorraine, Dan• Model Verification: Jacob
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