Prognostics in hydraulic transmission system using e-machine drive
AssigneeDeere & Company
InventorsSubhabrata GUPTA, Sourabha GOKHALE
Life of this patent
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Abstract
A device for determining fluid degradation includes a memory and processing circuitry configured to cause the device to generate first calibration data of an e-machine at a first time, generate second calibration data of the e-machine at a second time subsequent to the first time, and determine that the fluid is degraded in response to a difference between the first calibration data and the second calibration data being greater than or equal to a degradation threshold.
Claims21
A device for determining fluid degradation, the device comprising:
- a memory;
- and
- processing circuitry configured to cause the device to
- generate first calibration data of an electronic machine (e-machine) at a first time,
- generate second calibration data of the e-machine at a second time subsequent to the first time, and
- determine that the fluid is degraded in response to a difference between the first calibration data and the second calibration data being greater than or equal to a degradation threshold.
A system for determining fluid degradation, the system comprising:
- a hydraulic pump;
- an electronic machine (e-machine) configured to drive the hydraulic pump;
- and
- processing circuitry configured to cause the system to
- generate first calibration data of an e-machine at a first time,
- generate second calibration data of the e-machine at a second time subsequent to the first time, and
- determine that the fluid is degraded in response to a difference between the first calibration data and the second calibration data being greater than or equal to a degradation threshold.
A method for determining fluid degradation of a hydraulic system, the method comprising:
- generating first calibration data of an electronic machine (e-machine) at a first time;
- generating second calibration data of the e-machine at a second time subsequent to the first time;
- and
- determining that the fluid is degraded in response to a difference between the first calibration data and the second calibration data being greater than or equal to a degradation threshold.
Dependencies are inferred from the claim text.