Method and Computer Programme for Detecting the Stationary State of a Roller Bearing and a Roller Bearing Which May be Analyzed Thus
First Claim
1. A method for detecting the stationary state of a roller bearing having z rolling bodies, where z is an integral number to which a sensor arrangement is fixed, comprising:
- delivering a sinusoidal signal dependent on the rotational position of the roller bearing upon rotation of the roller bearing, which is sampled whereupon samples are determined,determining a first average value (MW1) of the samples of a first time interval (J1),determining respective average value (MW2, MW3, . . . ) of further time intervals (J2, J3, . . . ) and the roller bearing is considered to be stationary as long asA) the respective average value (MW2, MW3, . . . ) of the further time intervals (J2, J3, . . . ) does not differ significantly from the first average value (MW1) and/orB) the gradient between the first average value (MW1) and the respective average value (MW2, MW3, . . . ) of the further time intervals does not differ significantly from 0.
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Abstract
The invention relates to a method and a computer programme for detecting the stationary state of a roller bearing, comprising z rolling bodies, where z is a whole number, preferably an even number, to which a sensor arrangement is fixed, delivering a sinusoidal signal, dependent on the rotational position of the bearing on the rotation of the roller bearing. Said sinusoidal signal is sampled, whereupon sampled values are determined. According to the invention, a first average value (MW1) of the sampled values of a first time interval (J1) is determined (S120), whereupon the corresponding average value (MW2, MW3) of other time intervals (J2, J3) is determined (S132). The roller bearing is considered stationary as long as A) the corresponding average value (MW2, MW3) of the other time intervals (J2, J3) does not differ (S134) significantly from the first average value (MW1) and/or B) the gradient between the first average value (MW1) and the corresponding average value (MW2, MW3) of the other time intervals does not differ significantly from 0 (S335). The invention further relates to a roller bearing, provided with an analytical device for carrying out the inventive method or the computer programme.
6 Citations
26 Claims
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1. A method for detecting the stationary state of a roller bearing having z rolling bodies, where z is an integral number to which a sensor arrangement is fixed, comprising:
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delivering a sinusoidal signal dependent on the rotational position of the roller bearing upon rotation of the roller bearing, which is sampled whereupon samples are determined, determining a first average value (MW1) of the samples of a first time interval (J1), determining respective average value (MW2, MW3, . . . ) of further time intervals (J2, J3, . . . ) and the roller bearing is considered to be stationary as long as A) the respective average value (MW2, MW3, . . . ) of the further time intervals (J2, J3, . . . ) does not differ significantly from the first average value (MW1) and/or B) the gradient between the first average value (MW1) and the respective average value (MW2, MW3, . . . ) of the further time intervals does not differ significantly from 0. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification