Fault Model Augmentation Systems And Methods

Patent metadata

Field	Value
Publication number	US-2020372729-A1
Application number	US-201916420687-A
Country	US
Kind code	A1
Filing date	May 23, 2019
Priority date	May 23, 2019
Publication date	Nov 26, 2020
Grant date	—

Abstract

A fault diagnostic system includes: memory including a fault model, the fault model including: a plurality of failure modes of a vehicle; and symptoms respectively associated with each of the failure modes; an updating module configured to: based on a data set, determine a new failure mode that is not already included in the fault model and new symptoms indicative of the occurrence of the new failure mode; modify the fault model by: adding the new failure mode to the fault model; and adding the new symptoms to the fault model in association with the new failure mode; and re-save the fault model in the memory.

First claim

What is claimed is:

1 . A fault diagnostic system, comprising:
memory including a fault model, the fault model including:
a plurality of failure modes of a vehicle; and
symptoms respectively associated with each of the failure modes; and
an updating module configured to:
based on a data set, determine a new failure mode that is not already included in the fault model and new symptoms indicative of the occurrence of the new failure mode;
modify the fault model by:
adding the new failure mode to the fault model; and
adding the new symptoms to the fault model in association with the new failure mode; and

re-save the fault model in the memory.

2 . A vehicle system including:
the fault model of claim 1 ; and a diagnostic module configured to selectively diagnose faults in the vehicle based on one or more vehicle operating parameters and the fault model.

3 . The vehicle system 2 wherein the diagnostic module is configured to selectively diagnose a fault associated with the new failure mode when the one or more vehicle operating parameters are indicative of the new symptoms associated with the new failure mode occurring concurrently.

4 . The fault diagnostic system of claim 1 wherein the updating module is configured to modify the fault model in response to receipt of user input indicative of a confirmation to add the new failure mode and the new symptoms.

5 . The fault diagnostic system of claim 1 wherein the updating module is configured to determine boundaries for one of the new symptoms using at least one classification model and the data set.

6 . The fault diagnostic system of claim 5 wherein the updating module is further configured to label values of the data set based on comparisons of the values with the boundaries and to selectively adjust the boundaries based on the comparisons.

7 . The fault diagnostic system of claim 6 wherein the updating module is configured to label first ones of the values as being in a first state in response to a determination that the first ones of the values are within the boundaries and to label second ones of the values as being in a second state in response to a determination that the second ones of the values are not within the boundaries.

8 . The fault diagnostic system of claim 1 wherein the fault model includes rows for the failure modes and columns for the symptoms.

9 . A fault diagnostic system, comprising:
memory including a fault model, the fault model including:
a plurality of failure modes of a vehicle; and
one or more symptoms associated with each of the failure modes; and
an updating module configured to:
based on a data set, determine a new combination of symptoms that are not already stored in the fault model in association with a first one of the failure modes and that are indicative of the occurrence of the first one of the failure modes;
modify the fault model by:
adding an additional entry for the first one of the failure modes to the fault model; and
adding the new combination of symptoms to the fault model in association with the first one of the failure modes; and

re-save the fault model in the memory.

10 . A vehicle system including:
the fault model of claim 9 ; and a diagnostic module configured to selectively diagnose faults in the vehicle based on one or more vehicle operating parameters and the fault model.

11 . The vehicle system of claim 10 wherein the diagnostic module is configured to selectively diagnose a fault associated with the first one of the failure modes when the one or more vehicle operating parameters are indicative of the new combination of symptoms associated with the first one of the failure modes occurring concurrently.

12 . The fault diagnostic system of claim 9 wherein the updating module is configured to modify the fault model in response to receipt of user input indicative of a confirmation to add the additional entry for the first one of the failure modes to the fault model and the new combination of symptoms in association with the first one of the failure modes.

13 . The fault diagnostic system of claim 9 wherein the updating module is configured to determine boundaries for one of the symptoms of the new combination of symptoms using at least one classification model and the data set.

14 . The fault diagnostic system of claim 13 wherein the updating module is further configured to label values of the data set based on comparisons of the values with the boundaries and to selectively adjust the boundaries based on the comparisons.

15 . The fault diagnostic system of claim 14 wherein the updating module is configured to label first ones of the values as being in a first state in response to a determination that the first ones of the values are within the boundaries and to label second ones of the values as being in a second state in response to a determination that the second ones of the values are not within the boundaries.

16 . The fault diagnostic system of claim 9 wherein the fault model includes rows for the failure modes and columns for the symptoms.

17 . A fault diagnostic system, comprising:
memory including a fault model, the fault model including:
a plurality of failure modes of a vehicle; and
one or more symptoms associated with each of the failure modes; and
an updating module configured to:
identify a first one of the failure modes having a first set of one or more associated symptoms and a second one of the failure modes having a second set of one or more associated symptoms, wherein the first set of one or more associated symptoms is the same as the second set of one or more associated symptoms;
in response to a determination that the first set of one or more associated symptoms is the same as the second set of one or more associated symptoms, based on a data set, determine at least one new symptom that is not in the first set of one or more associated symptoms that is indicative of the occurrence of the first one of the failure modes;
modify the fault model by adding the at least one new symptom to the fault model in association with the first one of the failure modes; and
re-save the fault model in the memory.

18 . A vehicle system including:
the fault model of claim 17 ; and a diagnostic module configured to selectively diagnose faults in the vehicle based on one or more vehicle operating parameters and the fault model.

19 . The fault diagnostic system of claim 17 wherein the updating module is further configured to:
in response to the determination that the first set of one or more associated symptoms is the same as the second set of one or more associated symptoms, based on the data set, determine at least one second new symptom that is not in the second set of one or more associated symptoms that is indicative of the occurrence of the second one of the failure modes;
modify the fault model by adding the at least one second new symptom to the fault model in association with the second one of the failure modes; and
re-save the fault model in the memory.

20 . The fault diagnostic system of claim 17 wherein the updating module is configured to modify the fault model in response to receipt of user input indicative of a confirmation to add the at least one new symptom to the fault model in association with the first one of the failure modes.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Duan Shiming
• Sankavaram Chaitanya
• Sarwar Azeem
• Haskara Ibrahim
• Lee Chunhao J
• Chang Chen-Fang

Classifications

• G06N20/10

  using kernel methods, e.g. support vector machines [SVM] · CPC title

• G07C5/0808 Primary

  Diagnosing performance data (testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005) · CPC title

• G06N20/00

  Machine learning · CPC title

• G07C5/02 Primary

  Registering or indicating driving, working, idle, or waiting time only (apparatus forming part of taximeters G07B13/00) · CPC title

• G07C5/08

  Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time · CPC title