Emerson Electric (us) Holding Corporation (chile) Limitada

Rdi Technologies, Inc.

Douglas A Mann

Kenneth Ralph Piety

Jeffrey R Hay

Stewart V Bowers, Iii

Raymond Earl Garvey, Iii

Robert Darrell Skeirik

Joseph A Vrba

Michael D Medley

Kevin D Steele

Hermann Holtmannspötter

A method for non-contact modal analysis uses an optical sensing device such as a video camera. Unlike traditional modal analysis, requiring accelerometers or force sensors to measure the modal characteristics of a structure, the inventive system uses pixel displacement measurements from the optical sensor to characterize the modal properties of the device under test. The input or reference signal is measured by an independent data acquisition system and is synchronized with the response motion captured in video recordings.

Synchronization of input data acquisition and camera capture of response for modal analysis

Useful and meaningful machine characteristic information may be derived through analysis of oversampled digital data collected using dynamic signal analyzers, such as vibration analyzers. Such data have generally been discarded in prior art systems. In addition to peak values and decimated values, other oversampled values are used that are associated with characteristics of the machine being monitored and the sensors and circuits that gather the data. This provides more useful information than has previously been derived from oversampled data within a sampling interval.

Selective decimation and analysis of oversampled data

Growing community of inventors

Farragut, TN, United States of America

Douglas A Mann