Systems with flexible dynamics often vibrate due to external disturbances, as well as from changes in the reference command. Feedback control is an obvious choice to deal with these vibrations, but in many cases, it is insufficient or difficult to implement. A technique that does not rely on high performance feedback control is presented here. It utilizes a combination of vibration absorbers and input shapers. Vibration absorbers have been used extensively to reduce vibration from sinusoidal disturbances, but they can also be implemented to reduce the response from transient functions. Input shaping has proven beneficial for reducing vibration that is caused by changes in the reference command. However, input shaping does not deal with vibration excited by external disturbances. In this paper, vibration absorbers and input shapers are designed sequentially and concurrently to reduce vibration from both the reference command and from external disturbances. The usefulness of this approach is demonstrated through computer simulations and experimental results.
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September 2005
Technical Papers
Concurrent Design of Vibration Absorbers and Input Shapers
Joel Fortgang,
Joel Fortgang
Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332
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William Singhose
William Singhose
Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332
Search for other works by this author on:
Joel Fortgang
Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332
William Singhose
Woodruff School of Mechanical Engineering,
Georgia Institute of Technology
, Atlanta, GA 30332J. Dyn. Sys., Meas., Control. Sep 2005, 127(3): 329-335 (7 pages)
Published Online: August 19, 2004
Article history
Received:
December 5, 2003
Revised:
August 19, 2004
Citation
Fortgang, J., and Singhose, W. (August 19, 2004). "Concurrent Design of Vibration Absorbers and Input Shapers." ASME. J. Dyn. Sys., Meas., Control. September 2005; 127(3): 329–335. https://doi.org/10.1115/1.1979510
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