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 a stationary state of a roller bearing having z rolling bodies, where z is an integral number, to which a sensor arrangement is fixed, comprising:
- attaching a sensor arrangement to a roller bearing,obtaining a sinusoidal signal from the sensor arrangement,delivering the sinusoidal signal to an evaluating device, dependent on a rotational position of the roller bearing upon rotation of the roller bearing, where the signal is sampled, and samples are determined,determining a first average value of the samples of a first time interval, anddetermining a respective average value of further time intervalswherein the roller bearing is stationary, as long as;
A) the respective average value of the further time intervals is substantially equal to the first average value orB) a gradient between the first average value and the respective average value of the further time intervals is substantially equal to 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.
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Citations
26 Claims
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1. A method for detecting the a 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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attaching a sensor arrangement to a roller bearing, obtaining a sinusoidal signal from the sensor arrangement, delivering the sinusoidal signal to an evaluating device, dependent on a rotational position of the roller bearing upon rotation of the roller bearing, where the signal is sampled, and samples are determined, determining a first average value of the samples of a first time interval, and determining a respective average value of further time intervals wherein the roller bearing is stationary, as long as; A) the respective average value of the further time intervals is substantially equal to the first average value or B) a gradient between the first average value and the respective average value of the further time intervals is substantially equal to 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