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Class 73/659 - Spectrum analysis


Subclass of Class 73 - Measuring and testing
Definition: subject matter relating to the analysis of vibrations by
No. of applications: 5
Last issue date: 04/29/2010


Application No.Application TitleIssue Date
20100102976SYSTEM AND METHOD FOR MONITORING VIBRATION OF POWER TRANSFORMER
The present invention provides a system and method for monitoring vibration of a power transformer. The system comprises at least one vibration sensor operably mounted to the outer case of a transformer for sensing vibration of the power transformer; a spectrum analyzer...
04/29/2010
20090314092Method of Analyzing Non-Synchronous Vibrations Using a Dispersed Array Multi-Probe Machine
A method for identifying an unfolded non-synchronous blade vibration frequency in blades on a rotating rotor using a plurality of probes spaced from each other about the rotor. A set of data is acquired from the probes during a predetermined number of rotor revolutions ...
12/24/2009
20090249880Real-time detection of wafer shift/slide in a chamber
Methods and systems for detecting wafer shift/slide in a semiconductor process chamber have been disclosed. The vibration amplitude is measured in terms of acceleration because an increase in vibrational acceleration correlates with an increase of displacement of a wafe...
10/08/2009
20090019936METHOD AND DEVICE FOR IDENTIFYING SQUEAKING NOISES
A method for detecting squeaking noises within a sound signal generated during operation of a motor vehicle or during operation of a component thereof is described; in this method the sound signal is detected; an amplitude spectrum of the sound signal representing the a...
01/22/2009
20080041163Particle Detection
A method for detecting particles in a fluid involves passing any ultrasonic signal through the fluid. A Fast Fourier Transform analysis is performed on the received signal, to determine a characteristic frequency of the fluid where the amplitude is greatest. Both the am...
02/21/2008
 
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