A Time Domain Method for Estimating Forces Applied to an Unrestrained Structure-Reference-Cited by-同舟云学术

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

Published:2000-11-01 Issue:4 Volume:123 Page:524-532
ISSN:1048-9002
Container-title:Journal of Vibration and Acoustics
language:en
Short-container-title:

Author:

Stelzner Adam D.¹,Kammer Daniel C.²,Milenkovic Paul³

Affiliation:

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

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

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

Abstract

A new method for the estimation of forces applied to a structure is presented. This time domain technique uses the structures response time history and returns an estimate of the applied force time history. This technique allows near-real-time estimation of input forces for non-collocated sensor/actuator pairs for multi-input/multi-output systems. Two examples are presented. The first is a single-input/single-output one-dimensional spring/mass chain in which a remote accelerometer is used to estimate an input force at one end. In the second example, the technique is used to estimate six docking forces and moments between the Space Shuttle and the Russian MIR Space Station during a numerical simulation of a docking event.

Publisher

ASME International

Subject

General Engineering

Link

http://asmedigitalcollection.asme.org/vibrationacoustics/article-pdf/123/4/524/5607242/524_1.pdf

Reference14 articles.

1. Starkey, J. M., and Merrill, G. L., 1989, “On the Ill-Conditioned Nature of Indirect Force-Measurement Techniques,” Journal of Modal Analysis, 7, pp. 103–108.

2. Groetsch, C. W., 1993, Inverse Problems in the Mathematical Sciences, Braunschweig, Vieweg, p. 152.

3. Stevens, K. K., 1987, “Force Identification Problems - An Overview,” in SEM Spring Conference on Experimental Mechanics, Houston, Texas.

4. Carne, T. G., Bateman, V. I., and Mayes, R. L., 1992, “Force Reconstruction Using a Sum of Weighted Accelerations Technique, 10th International Modal Analysis Conference, San Diego, Ca.

5. Genaro, G., and Rade, D. A., 1998, “Input Force Identification in the Time Domain,” 16th International Modal Analysis Conference, Santa Barbara, California.

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