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TECHNICAL PAPERS

A Time Domain Method for Estimating Forces Applied to an Unrestrained Structure

[+] Author and Article Information
Adam D. Stelzner

Mechanical Engineering Section, Jet Propulsion Laboratory, 4800 Oak Grove Dr., Pasadena, CA 91109

Daniel C. Kammer

Department of Engineering Physics, University of Wisconsin, 153 ERB, 1500 Engineering Dr., Madison, WI 53706

Paul Milenkovic

Department of Electrical and Computer Engineering, University of Wisconsin, 3623 Engineering Hall, 1400 Engineering Dr., Madison, WI 53706

J. Vib. Acoust 123(4), 524-532 (Nov 01, 2000) (9 pages) doi:10.1115/1.1401055 History: Received July 01, 2000; Revised November 01, 2000
Copyright © 2001 by ASME
Topics: Force , Sensors
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References

Figures

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One dimensional spring mass chain
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Actual and estimated input forces (time domain) 15.6 percent RMS error
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Actual and estimated input forces (frequency domain) 15.6 percent RMS error (filtered), 350+ percent RMS error (unfiltered)
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Percent RMS error in force estimates with model lead
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MIR FEM with sensor locations shown (docking @#118009)
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Typical ISF (104014-y to z-direction input force)
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Shuttle/MIR docking simulation force estimates
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Shuttle/MIR docking simulation force estimates (enlarged)
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Shuttle/MIR docking simulation force estimates (z-direction force)
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Shuttle/MIR docking simulation moment estimates
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Shuttle/MIR docking simulation response comparison (sensor DOF 104014-z)
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Shuttle/MIR docking simulation response comparison (sensor DOF 101016-z)

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