Method and apparatus for determining statistical characteristics

Details Method and apparatus for determining statistical characteristics Method and apparatus for determining statistical characteristics

1982-11-22

1984-06-12

Swisher, S. Clement

Measuring and testing

Sheet, woven fabric or fiber

364471, G06G 766, G06G 712

Patent

active

044534043

ABSTRACT:
A method for determining statistical characteristics of a measurable property includes the initial step of monitoring the property and generating an electrical signal, the magnitude of which is a representative measure of the property. The electrical signal is passed through a high pass filter to eliminate low frequency noise which would otherwise tend to affect artificially extreme values of the signal. The maxima of the filtered signal is then determined within defined time intervals and extreme value statistical analysis is applied to the maxima of the filtered electrical signal to determine statistical characteristics of the measurable property. This method and apparatus for performing the method may be favorably applied to monitoring weight basis of sheet material, such as paper, as the material is being produced.

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"The Application of Extreme-Value Theory to Error-Free Communication" Edward C. Posner, Technometrics, vol. 7, No. 4, pp. 517-529--Nov. 1965.
"Extremal Statistics in Computer Simulation of Digital Communication Systems" Schwartz & Richman, Extremal Statistics in Computer Simulation, 1968, pp. 483-489.

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