Method for analysing regularly recurring mechanical vibrations
First Claim
1. Method for analysing regularly recurring mechanical vibrations, comprising the steps ofplotting an amplitude/time spectrum associated with said vibrations,dividing the amplitude/time spectrum into time intervals shorter than the shortest time lapse between two consecutive excitations, the start times of the time intervals being consecutive and the time intervals overlapping one another,subjecting those parts of the amplitude/time spectrum defined by each time interval to a Fourier transformation in order to obtain an amplitude/vibration-frequency interval spectrum associated with each time interval, andsubjecting those amplitudes in each amplitude/frequency interval spectrum associated with certain vibration frequencies to a Fourier transformation in order to obtain an excitation-frequency spectrum associated with said respective vibration frequency.
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Abstract
A method for analysing regularly recurring mechanical vibrations comprises the steps of plotting an amplitude/time spectrum associated with the vibrations, dividing the amplitude/time spectrum into time intervals shorter than the shortest time lapse between two consecutive excitations, subjecting those parts of the amplitude/time spectrum defined by each time interval to a Fourier transformation in order to obtain an amplitude/vibration-frequency interval spectrum associated with each time interval, and subjecting those amplitudes in each amplitude/vibration frequency interval spectrum associated with certain vibration frequencies to a Fourier transformation in order to obtain an excitation-frequency spectrum associated with the respective vibration frequency.
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3 Claims
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1. Method for analysing regularly recurring mechanical vibrations, comprising the steps of
plotting an amplitude/time spectrum associated with said vibrations, dividing the amplitude/time spectrum into time intervals shorter than the shortest time lapse between two consecutive excitations, the start times of the time intervals being consecutive and the time intervals overlapping one another, subjecting those parts of the amplitude/time spectrum defined by each time interval to a Fourier transformation in order to obtain an amplitude/vibration-frequency interval spectrum associated with each time interval, and subjecting those amplitudes in each amplitude/frequency interval spectrum associated with certain vibration frequencies to a Fourier transformation in order to obtain an excitation-frequency spectrum associated with said respective vibration frequency.
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