Magnetic Bearing Critical Design Review
16
Magnetic Bearing Critical Design Review Team miniMuffin Lauren Glogiewicz Jacob Beckner Kevin Bodkin James Holley Philip Terry
description
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. - PowerPoint PPT Presentation
Transcript of Magnetic Bearing Critical Design Review
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.
Current Control
Jake B.
Iout = -Vin / Rmag
Electromagnets• 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
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.
A/D Converter• Using microcontroller on-board A/D
• TI MSP430: 4 Channel 10-Bit 200 KSPS
• TI C2000: 7 Channel 12-Bit 4.6 MSPS
Kevin B.
Software FD
Kevin B.
8-12 bits per magnet sent to current control via FPGA I/O
Convert distance error to current
8x sensor distance in to FPGA
Microprocessor / FPGATwo possible microcontroller / FPGA controllers:
• TI C2000o Up to 60 MHzo Supports I2C and SPIo On board A/D Converters
• Altera DE2 Boardo Up to 50 MHzo 80 GIO Pinso Ability to apply control in parallel
James H.
D/A Converter• TI DAC7576
o 8 channel, 12 bitso Up to 2.3 MHz communication speedo I2C synchronous communication will be used
James H.
Magnet Test Bed
James H.
Magnet Test Bed
James H.
Timeline
• Milestone 1o Floating 1D concepto Focus on feedback loop design and interface
• Milestone 2o 2D axle built and working
• Expoo Fully 3D axle with horizontal stabilization
Lauren G.
Updated Budget• We have received $1000 from UROP• We will still apply for the EEF Grant
Item Part No. Cost Quantity Total Cost Electromagnets EM 200 $ 41.61 15 $ 624.15
Optical Sensors Sharp GP2Y0D805Z0F $ 3.70 15 $ 55.50
BJT $ 0.38 25 $ 9.50
Op Amps $ 1.00 25 $ 25.00
Capacitors $ 0.60 20 $ 12.00
Resistors $ 0.60 20 $ 12.00
Wire Wire T Lead Plastic 22AG $ 18.00 5 $ 90.00
Nuts, Bolts, Screws Aluminum (25 pack) $ 9.58 3 $ 28.74
Aluminum 6ft x 1/4" x 2" $ 30.22 1 $ 30.22 Machining $ 200.00 1 $ 200.00 PCB $ 60.00 3 $ 180.00
Shipping and Handling $ 10.00 6 $ 60.00
Posters/Presentation $ 70.00 1 $ 70.00 Total $ 1,397.11
Lauren G.
Questions?
?
