1. Controllers-system for APS - Cube Sat nano-satellite Instructor: Daniel Alkalay Students: Moshe Emmer & Meir Harar

2. Agenda Background Project Goals Architecture/Interface Schedule

3. Background APS Cube-Sat satellite is developed as a final year project by a group of aerospace engineering students. Its dimensions are 10x10x30 [cm^3] and its main task is to provide a low cost ( GPS like ) positioning system. APS (Accurate Positioning system) will be a ~100 Cubesat constellation ( 10 * 10 ) at a LEO (~1000 Km ) Orbit.

4. Motivation APS – Cubesat is a Multidisciplinary project. It involves AE and EE disciplines. AE provide: Mission design, Orbital design, Systems architecture, Attitude control, choosing sensors, actuators and Mechanical design. EE, using System design inputs from AE, are to design H/W, S/W and implement algorithms for the: OBC (On Board Controllers), Attitude- control, power management, Payload design, Telemetry and RF communications systems.

5. Project goals Design and implement a computing system, which will execute and control the satellite’s different tasks, by FPGA technology. For that purpose, several steps are to be accomplished.

6. Project goals, cont` Steps Learn FPGA technology and experience an entry design A-to-Z. Work vs. AE students and characterize their needs in EE terms. Design an architecture and implement on FPGA a system that meets satellite needs.

7. APS Cubesat Bus Architecture SA I/F & Bat C/D- Control Battery Attitude System Sensors & actuators Magneto-meter מד שמש Rate Gyro מגנטו-טורקרים Engines Sensors Actuators Accurate Positioning System שעון אטומי APS & TLM TransCeiver Power Distribution Over-current control TLM TT+C Attitude Control On-Board Controllers uBlaze + pBlaze + State-Machines Power Control Telemetry S&AI/FS&AI/F Payload TLM

8. Schedule Winter Semester –Learn the lab tools, intro to FPGA technology –Create mini project, which includes several cores, few peripherals and practice different modules’ communication. –Learn and translate into EE terms, aerospace needs and algorithms – according to AE students progress. Spring semester (in a nut shell) –Learn AE algorithms and design protocols respectively. –Start to implement the system in the lab… There is some vagueness due to AE progress….