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Magnetic Bearing Critical Design Review. Team miniMuffin Lauren Glogiewicz Jacob Beckner Kevin Bodkin James Holley Philip Terry. Level 0 Functional Decomposition. Level 1 Functional Decomposition. Level 2 Functional Decomposition. I out = -V in / R mag. Current Control.
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Magnetic Bearing Critical Design Review Team miniMuffin Lauren Glogiewicz Jacob Beckner Kevin Bodkin James Holley Philip Terry
Level 0 Functional Decomposition Phil T.
Level 1 Functional Decomposition Phil T.
Level 2 Functional Decomposition Phil T.
Iout = -Vin / Rmag Current Control Jake B.
Electromagnets have inductance as circuit element • Causes initial overshoot and slow rise to desired level • Must be accounted for in design • Rise Time = 20 ns Leveling Time = 2.7 μs Electromagnets Jake B.
Sensor Circuit • Sensor output current is based upon the distance away from the object • Ideal distance to axle from the sensor is between 0.3” - 0.8” • Beyond this, sensor data will become unreliable Kevin B.
Using microcontroller on-board A/D • TI MSP430: 4 Channel 10-Bit 200 KSPS • TI C2000: 7 Channel 12-Bit 4.6 MSPS A/D Converter Kevin B.
Software FD Kevin B.
Two possible microcontroller / FPGA controllers: • TI C2000 • Up to 60 MHz • Supports I2C and SPI • On board A/D Converters • Altera DE2 Board • Up to 50 MHz • 80 GIO Pins • Ability to apply control in parallel Microprocessor / FPGA James H.
TI DAC7576 • 8 channel, 12 bits • Up to 2.3 MHz communication speed • I2C synchronous communication will be used D/A Converter James H.
Magnet Test Bed James H.
Magnet Test Bed James H.
Milestone 1 • Floating 1D concept • Focus on feedback loop design and interface • Milestone 2 • 2D axle built and working • Expo • Fully 3D axle with horizontal stabilization Timeline Lauren G.
We have received $1000 from UROP • We will still apply for the EEF Grant Updated Budget Lauren G.
? Questions?