Real time feedback control system for an electromagnetic launcher

Ryan W. Karhi, John J. Mankowski, David J. Hemmert, Shad L. Holt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The design and implementation of a real time feedback control system for a distributed energy, bench top, electromagnetic launcher is presented. The feedback control system provides optimum pulse shaping by real time control of solid state switches. Advantages of pulse shaping control include increased energy efficiency and control of armature exit velocity. LabVIEW 8.0 software1 is used to program a National Instruments CompactRIO programmable automation controller (PAC). This provides real time processing by use of the reconfigurable I/O (RIO) FPGA technology. The program controls switch timing from analog feedback signals supplied by B-dot probes placed along the rail length. Through signal analysis, real time armature position is derived. The program uses this data to control pulse shape and width. A dedicated B-dot probe is placed at the beginning of each stage which is the desired triggering location. A flux ruler sensor along the bore length provides a secondary velocity calculation excluded from the control system. This sensor provides velocity measurements for every centimeter of bore travel. Collected data is used to characterize the system under test for different load conditions.

Original languageEnglish
Title of host publication2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS
PublisherIEEE Computer Society
Pages179-184
Number of pages6
ISBN (Print)9781424420612
DOIs
StatePublished - Jan 1 2006
Event2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS - Santa Fe, NM, United States
Duration: Nov 5 2006Nov 10 2006

Publication series

Name2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS

Conference

Conference2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS
CountryUnited States
CitySanta Fe, NM
Period11/5/0611/10/06

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  • Cite this

    Karhi, R. W., Mankowski, J. J., Hemmert, D. J., & Holt, S. L. (2006). Real time feedback control system for an electromagnetic launcher. In 2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS (pp. 179-184). [4530676] (2006 International Conference on Megagauss Magnetic Field Generation and Related Topics, including the International Workshop on High Energy Liners and High Energy Density Applications, MEGAGAUSS). IEEE Computer Society. https://doi.org/10.1109/MEGAGUSS.2006.4530676