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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
... a linear time-invariant model. The LPTV-AR model is shown in Fig. 1 , which assumes the infinite impulse response (IIR), h ( t , i ) , to be causal and of order p . Time series model-based methods were often adopted for fault diagnosis ( 3 ). These classical models mostly...
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...