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Stretched Coil Magnetic Field Integral Measurement System Architecture

Stretched Coil Magnetic Field Integral Measurement System Architecture. Joseph Z. Xu ANL APS CTLS. Argonne National Laboratory. A U.S. Department of Energy Office of Science Laboratory Operated by The University of Chicago. Office of Science. U.S. Department of Energy.

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Stretched Coil Magnetic Field Integral Measurement System Architecture

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  1. Stretched Coil Magnetic Field Integral Measurement System Architecture Joseph Z. Xu ANL APS CTLS Argonne National Laboratory A U.S. Department of EnergyOffice of Science Laboratory Operated by The University of Chicago Office of Science U.S. Department of Energy

  2. Key System Requirements • Motion Control: SmartMotor via RS-232 • 8 axis: 2x(0-400mm), 2y(0-400mm), 2z(0-400mm), 2w(0-360) • Motion Readout: Linear (x, y, and z) and Rotary (w) Encoders • Linear encoder resolutions: 0.5 μm. • Rotary encoder resolutions: 36,000 step/revolution. • Linear stage speed: up to 50 mm/s • Rotary stage speed: up to 1 revolution/second. • Δx, Δy, Δz, Δw (in steps). • DAQ: Coil EM Voltage Measurement • Resolution: 16 bit (5 digits). • Sampling rate: 1.5 kS/s. • Synchronization: Absolute Position vs. Voltage Measurement w/ 16 bit resolution, at 1.5 kS/s. • Digital I/O Noise Control: 10-7

  3. To the SmartMotors From the Coil RS-485 PowerDAQ 16 bit PCI ADC Card RS-232 RS-232 to RS-485 Converter Amplifier Current System Architecture • Current Issues: • Positioning and measurements are “synchronized” by PC CPU time using software. (~ 3 ms) • Start and Finish positions/times are not well defined.

  4. Proposed System Architecture From x, y, z, and w encoders From Start/end position Optical Sensor From the Coil PXI FPGA I/O with built in 16 bit ADC TCP/IP Amplifier RS-232 To Stage Servo Motors • Key Features: • Integrated real time encoder readout, triggering, and Coil EM voltage measurement. • TCP/IP Interface, can be accessed remotely from anywhere, anytime, wired or wirelessly. • Commercial off-the-shelf product. • Same hardware/software can be re-used for the “Hall Probe Measurement” setup. • Drawbacks: • Extra DAQ and Encoder hardware.

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