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Bryan Sonneveldt Mentor: Dr. Iman Alizadeh

Small Satellite Attitude Control System Test Bed. Bryan Sonneveldt Mentor: Dr. Iman Alizadeh. School of Earth and Space Exploration and Ira A. Fulton Schools of Engineering at Arizona State University. Outline. Background and Purpose - Why satellite test beds? Our System

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Bryan Sonneveldt Mentor: Dr. Iman Alizadeh

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  1. Small Satellite Attitude Control System Test Bed Bryan Sonneveldt Mentor: Dr. ImanAlizadeh School of Earth and Space Exploration and Ira A. Fulton Schools of Engineering at Arizona State University

  2. Outline • Background and Purpose • - Why satellite test beds? • Our System • - The whole test bed • Spherical Air Bearing • - How we saved $3,000 • Simulation of System • - Testing without the test bed

  3. Reason for Satellite Attitude Control Test Beds • Simulating a space environment • Microgravity, reduced friction, etc. • Verifying Hardware • Testing New Methods • Key Component • Spherical air bearing Former SDSL CubeSat project – SDS1

  4. Complete Test Bed • Attitude Control Hardware: • 3 Reaction Wheels • Wireless Communication • Degrees of Freedom • Full rotation along yaw axis • tilt along pitch and roll axes • Optimal Mass and Design • Reaction wheel alignment component plate Reaction Wheel View 2 Reaction Wheel View 1 reaction wheels Attitude Control System Test Bed

  5. Spherical Air Bearing Machined in-house spherical air bearing Spherical Air Bearing and Container Bearing Container air supply Test Bed Assembly Front View air inlet • Single air inlet • Pressure regulator controls air flow • Machining air bearing from scrap aluminum saved about $3,000 thin film of air between bearing and container Spherical Air Bearing With Air Supply

  6. Spherical Air Bearing Videos https://www.youtube.com/watch?v=nf_p_WacpNY https://www.youtube.com/watch?v=WNrec5pNju0&feature=youtu.be 45o Bearing Assembly – Section View Bearing Assembly – Degrees of Freedom

  7. Simulation • Why a Simulation? • Assumptions made.. • https://www.youtube.com/watch?v=4HBlPNE2bf8&feature=youtu.be • https://www.youtube.com/watch?v=eKiAZq_Ch4A

  8. Conclusion/Next steps • Verify performance of spherical air bearing • Test and Refine Control Algorithms • Using the simulation and physical test bed • Adjust reaction wheels to align with principal axes of inertia • Start testing small satellite attitude control systems

  9. Thank You Questionsor Comments? Name: Bryan Sonneveldt Email: bsonneve@asu.edu Attitude Control System Test Bed

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