Method and Device for Categorizing Damage to a Roller Bearing
First Claim
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1. A method for categorizing damage to a roller bearing integrated in a device that includes the steps:
- Record a signal that represents the structure-borne vibrations of the device,Analyze the signal in terms of at least one specified signal characteristic,Assign the signal to a predetermined damage category based on the results of the analysis,whereinthe analysis includes a statistical evaluation of an analytical function of the signal derived from the recorded signal in order to determine the characteristic value of the specified signal characteristics, the analytical function being a derivative of the signal that is the jerk of the structure-borne noise represented, or it is a higher derivative.
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Abstract
The invention relates to a method and a test and analytical device for categorizing antifriction bearing damages. The invention is characterized in that analysis preceding categorization comprises statistically evaluating the jerk of a structure-borne noise signal to which the movement of the antifriction bearing to be inspected contributes.
8 Citations
19 Claims
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1. A method for categorizing damage to a roller bearing integrated in a device that includes the steps:
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Record a signal that represents the structure-borne vibrations of the device, Analyze the signal in terms of at least one specified signal characteristic, Assign the signal to a predetermined damage category based on the results of the analysis, wherein the analysis includes a statistical evaluation of an analytical function of the signal derived from the recorded signal in order to determine the characteristic value of the specified signal characteristics, the analytical function being a derivative of the signal that is the jerk of the structure-borne noise represented, or it is a higher derivative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15)
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13. The method as recited in claim
wherein the signal that is recorded represents the velocity of the structure-borne vibration.
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16. A measuring and analytical device for categorizing damage to a roller bearing integrated in a device that includes:
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A sensor (20) for recording a signal that represents the structure-borne vibrations in the device (30), A digital data memory (13) for storing the recorded signal, A digital arithmetic unit (12) for processing the stored signal, A digital program memory (14) for storing instructions, rules, and default values for controlling the processing of the stored signal, Output means (15) for outputting a result of the processing of the stored signal, the instructions, rules, and default values stored in the program memory (14) being designed to analyze the stored signal in terms of at least one specified signal characteristic, assign the stored signal to a predetermined damage category based on the result of the analysis, and to allow the output of this damage category—
as the result of the processing—
by the output meanswherein the analysis includes a statistical evaluation of an analytical function of the signal derived from the recorded signal in order to determine the characteristic value of the specified signal features, the analytical function being a derivative of the signal that is the jerk of the structure-borne noise represented, or it is a higher derivative. - View Dependent Claims (17, 18, 19)
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Specification