Patent ID: 11946538
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 8:
9. One or more non-transitory machine-readable media comprising program code, the program code to:
obtain, over a first time period included within a first time window, a first set of speed measurements for a first shaft and a second set of speed measurements for a second shaft, wherein the first shaft and the second shaft are connected by a transmission;
determine, for the first time window, a first number value for a first slip revolutions using the first set of speed measurements and the second set of speed measurements adjusted for a ratio of a gear that the transmission was engaged in during the first time window and based on a ratio of a number of revolutions of the first shaft to a number of revolutions of the second shaft over the first time window;
obtain, over a second time period included within a second time window, a third set of speed measurements for the first shaft and a fourth set of speed measurements for the second shaft;
determine, for the second time window, a second number value for a second slip revolutions using the third set of speed measurements and the fourth set of speed measurements adjusted for the ratio of the gear that the transmission which was engaged in during the first time window and the second time window and based on a ratio of a number of revolutions of the first shaft to a number of revolutions of the second shaft over the second time window;
determine a rate of change between the first number value for the first slip revolutions and the second number value for the second slip revolutions; and
determine a health status for a clutch of the transmission based on the determined rate of change between the first number value and the second number value.