Method and system to control propulsion systems having sensor or actuator degradation
AssigneeGM Global Technology Operations LLC
InventorsKevin C. Wong, Jeffrey M. Hutmacher, Marcus S. Gilbert
Life of this patent
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Abstract
A method to detect and mitigate sensor or actuator degradation in an automobile system includes: collecting a signal data output from at least one device which is outputting the signal data in response to monitored operational parameters of a motor vehicle system; analyzing patterns of the signal data compared to a signal data output from a nominal operating one of the at least one device using an artificial intelligence program; and identifying when the patterns of the signal data exceed a threshold level indicating the at least one sensor or actuator is operating in a degraded condition.
Claims13
A method to detect and mitigate sensor or actuator degradation in an automobile system, comprising:
- collecting a signal data from at least one device which is outputting the signal data related to operational parameters of a vehicle system;
- analyzing patterns of the signal data compared to patterns of signal data from a nominal operating device;
- identifying when at least one of the patterns of the signal data from the at least one device deviate from a threshold, the deviation indicating the at least one device is operating in a degraded condition defining a degraded but acceptable range;
- continuing operation of the at least one device in the degraded condition until a predetermined second threshold is reached indicating a device failure has occurred;
- and
- selecting between the steps of:
- (a) generating corrective data to change the operational parameters of the vehicle system such that the at least one of the patterns is modified to correspond to the patterns of the signal data from the nominal operating device;
- or
- (b) if the corrective data cannot modify the patterns to correspond to the patterns of the signal data from the nominal operating device, identifying the at least one device as faulted.
A method to detect and mitigate sensor or actuator degradation in an automobile system, comprising:
- collecting a signal data output from at least one device defining at least one sensor or actuator which is outputting the signal data in response to monitored operational parameters of a motor vehicle system;
- analyzing patterns of the signal data compared to a signal data output from a nominal operating one of the at least one device using an artificial intelligence program;
- identifying when the patterns of the signal data exceed a threshold level indicating the at least one sensor or actuator is operating in a degraded condition defining a degraded but acceptable range;
- continuing operation of the at least one device in the degraded condition until a predetermined second threshold is reached indicating a sensor or actuator failure has occurred;
- the at least one device including at least one of a sensor and an actuator, and further including modifying a control signal to change the operational parameters of the vehicle system until the signal data from the at least one device changes to substantially match the signal data from the nominal operating one of the at least one operating device.
Dependencies are inferred from the claim text.