Bearing maintenance timing acquisition method
AssigneeHunan Institute of Engineering
InventorsKexiang WEI, Xian XIONG, Wenxian YANG, Guanghui ZHU, Bo QIN
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Abstract
Provided in the present invention is a bearing maintenance timing acquisition method: acquiring vibration signals of a bearing under different loads; then, respectively acquiring dimensionless parameters according to the vibration signal of each load; thus, acquiring predicted damage condition distribution data of the bearing under different loads according to the dimensionless parameters; and finally, obtaining accurate maintenance timing based on the predicted damage condition distribution data under different loads, so as to prolong the service life of the bearing while reducing maintenance costs.
Claims5
A method for determining the a time to repair a bearing, comprising:
- obtaining a vibration signal of the bearing;
- obtaining a dimensionless criteria of the vibration signal based on the vibration signal;
- and
- determining a time to repair the bearing according to the dimensionless criteria of the vibration signal,
- wherein obtaining the dimensionless criteria of the vibration signal based on the obtained vibration signal includes:
- obtaining a NIE of the vibration signal according to the vibration signal;
- the NIE of the vibration signal satisfies the following formula:
- NIE
- =
- -
- ∑
- k
- =
- 1
- M
-
- (
- p
- k
- ×
- ln
-
- (
- p
- k
- )
- )
- therein, pk represents the possible distribution of the vibration signal;
- the M is a natural number:
- the pk satisfies the following formula:
- p
- k
- =
- n
- k
- N
- ×
- 100
-
- %
-
- (
- k
- =
- 1
- ,
- 2
- ,
- .
- .
- .
-
- ,
- M
- )
- therein, the nk represents the number of data in each element;
- the N represents the number of data contained in the vibration signal;
- the N satisfies the following formula:
- N
- =
- ∑
- k
- =
- 1
- M
-
- n
- k
(canceled)
Dependencies are inferred from the claim text.