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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/27491

    Title: A PC-based real-time Hall probe automatic measurement system for magnetic fields
    Authors: Hwang, C. S.;Lin, F. Y.;鄭伯昆;Tseng, P. K.
    Contributors: 淡江大學物理學系
    Keywords: Real time systems;Hall effect devices;Magnetic field measurement;Magneticdevices;Instruments;Synchrotron radiation;Sampling methods;Control systems;Temperature control;System software
    Date: 1999-08
    Issue Date: 2009-12-31 10:12:04 (UTC+8)
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Abstract: A real-time, Hall-probe automatic measurement system was developed at the Synchrotron Radiation Research Center (SRRC) for the magnetic field measurement of the "C"-type rectangular combined function bending magnet, multipole magnets, and the insertion device magnets. The sampling rate on the x-y-z table with dynamic moving speed of 15 cm/s can be up to 200 samples/s, and the precision is within /spl plusmn/0.01%. A PC is used as a system controller which connects instrument function cards with instruments via the PC bus and an IEEE-488 interface card. An inexpensive, stable within /spl plusmn/15 ppm current source is produced to supply a high-stability constant current for the Hall probe; a temperature controller maintains the Hall probe temperature within /spl plusmn/0.2/spl deg/C. The system's software has been divided into different modules that can be connected into a network global data base. System testing has shown that the magnetic field measurement accuracy of this system is better than /spl plusmn/25 ppm in the static measurement.
    Relation: IEEE transactions on instrumentation and measurement 48(4), pp.858-863
    DOI: 10.1109/19.779190
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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