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Keywords: time series
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Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2009, 131(2): 021004.
Published Online: February 17, 2009
... propose modeling structural vibration sensor output data using nonlinear time-series models. We demonstrate the improved performance of these models over currently used linear models. Whereas existing methods typically use a single sensor’s output for damage detection, we create a combined sensor analysis...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. February 2009, 131(1): 011003.
Published Online: December 29, 2008
...John Zolock; Robert Greif The main goal of this research was to develop and present a general, efficient, mathematical, and theoretical based methodology to model nonlinear forced-vibrating mechanical systems from time series measurements. A system identification modeling methodology for forced...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2008, 130(3): 031004.
Published Online: April 3, 2008
...S. J. Loutridis The vibration time series of gear systems exhibit self-similarity. The time-series behavior is characterized by an exponent, known as the scaling exponent. An algorithm is proposed for the estimation of both global and local exponents, thus providing a means of examining the time...
Journal Articles
Article Type: Technical Briefs
J. Vib. Acoust. October 2006, 128(5): 666–671.
Published Online: June 3, 2006
... signal. Time series model-based methods were often adopted for fault diagnosis ( 3 ). These classical models mostly assume that vibration signals are stationary. However, this assumption is not true under many fault conditions of complex rotating machinery. Recent research reveals that vibration...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. October 2000, 122(4): 399–408.
Published Online: March 1, 2000
...Bogdan O. Ciocirlan; Dan B. Marghitu In this paper, the analysis of the time evolution of a levitated droplet is proposed. The analysis is composed of two parts: in the first part, a nonlinear dynamics approach was considered to calculate quantities characterizing time series data such as attractor...