MACHINE CONDITIONING MONITORING CLOSED LOOP LUBRICATION SYSTEM AND METHOD

• US 20100147627A1
• Filed: 12/16/2008
• Published: 06/17/2010
• Est. Priority Date: 12/16/2008
• Status: Active Grant

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Lanthier, Gilles, Hebebrand, Mandi L., Lowe, Paul A., Lakomiak, Jason E.
• Granted Patent: US 9,109,748 B2
• Time in Patent Office: Days
• US Class Current: 184/7.400
• CPC Class Codes: F16C 33/6674 related to the amount supplied, e.g. gaps to restrict flow of the liquid
• CPC Class Codes: F16N 2210/14 Bearings
• CPC Class Codes: F16N 2250/38 Piezo; x-tal
• CPC Class Codes: F16N 29/02 for influencing the supply of lubricant
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence

Abstract

In one embodiment, the disclosed method for lubricating a machine bearing system includes monitoring a bearing system using a vibration sensor, such as an accelerometer, receiving a signal from the vibration sensor, calculating a parameter based on the signal; and adding a lubricant to the bearing system based upon the parameter. In another embodiment, a system may include a vibration sensor, a monitor configured to receive a signal from the vibration sensor and calculate a spike energy value, and a lubrication device configured to add a lubricant to a bearing system based on the spike energy value. The system and method help reduce maintenance and repair costs, while prolonging the life of the machine system components being monitored.

Claims

1. A method for lubricating a machine bearing system, comprising:

monitoring a bearing system using a vibration sensor;

receiving a signal from the vibration sensor;

calculating a parameter based on the signal; and

adding a lubricant to the bearing system based upon the parameter via an automated lubrication device.

2. The method of claim 1, further comprising evaluating the parameter to determine whether the bearing system needs lubrication.

3. The method of claim 2, comprising evaluating the parameter by comparing the parameter to a threshold value.

4. The method of claim 1, wherein the parameter comprises a spike energy.

5. The method of claim 1, wherein the parameter comprises a rate of change of a spike energy.

6. The method of claim 1, wherein the vibration sensor comprises an accelerometer.

7. The method of claim 1, comprising evaluating the parameter following addition of the lubricant to determine whether an undesired condition exists in the bearing system.

8. The method of claim 7, comprising notifying an operator that the undesired condition exists in the bearing system.

9. The method of claim 1, comprising evaluating the parameter and machine condition monitoring data to detect a cause of an undesirable condition in the bearing system.

10. The method of claim 9, wherein the machine condition monitoring data comprises an overall vibration parameter, an unbalance parameter, a looseness parameter, a Fourier transform parameter, or a misalignment parameter.

11. A method for lubricating a machine bearing system, comprising:

monitoring a bearing system using a vibration sensor;

receiving a signal from the vibration sensor;

calculating a value of spike energy based on the signal;

comparing the spike energy value to a threshold; and

adding a lubricant to the bearing system based upon the comparison via an automated lubrication device.

12. The method of claim 11, wherein the spike energy value is a rate of change of spike energy.

13. The method of claim 11, comprising evaluating the spike energy following addition of the lubricant to determine whether an undesired condition exists in the bearing system.

14. The method of claim 13, comprising notifying an operator that the undesired condition exists in the bearing system.

15. The method of claim 13, comprising adding a second amount of lubricant in response to the undesired condition.

16. The method of claim 11, comprising evaluating the spike energy and machine condition monitoring data to detect a cause of the undesirable condition in the bearing system.

17. A machine bearing lubrication system, comprising:

a vibration sensor;

a monitor configured to receive a signal from the vibration sensor and calculate a spike energy value; and

an automated lubrication device configured to add a lubricant to a bearing system based on the spike energy value.

18. The system of claim 17, wherein the spike energy value comprises a rate of change of spike energy.

19. The system of claim 17, wherein the monitor is configured to evaluate the spike energy following addition of the lubricant to determine whether an undesired condition exists in the bearing system.

20. The system of claim 19, comprising notifying an operator that the undesired condition exists in the bearing system.

21. The system of claim 19, comprising adding a second amount of lubricant in response to the undesired condition.

22. The system of claim 19, comprising evaluating the spike energy and machine condition monitoring data to detect a cause of the undesirable condition in the bearing system.

23. The system of claim 22, wherein the machine condition monitoring data comprises an overall vibration parameter, an unbalance parameter, a looseness parameter, a Fourier transform parameter, or a misalignment parameter.