CN115599079A - Airborne PHM system fault diagnosis function test method - Google Patents
Airborne PHM system fault diagnosis function test method Download PDFInfo
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- CN115599079A CN115599079A CN202211613256.0A CN202211613256A CN115599079A CN 115599079 A CN115599079 A CN 115599079A CN 202211613256 A CN202211613256 A CN 202211613256A CN 115599079 A CN115599079 A CN 115599079A
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 64
- 238000010998 test method Methods 0.000 title claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 78
- 238000004088 simulation Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 38
- 238000012423 maintenance Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 5
- 238000012797 qualification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000011990 functional testing Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The application belongs to the technical field of airplane system tests, and particularly relates to a fault diagnosis function test method for an airborne PHM system. The method comprises the steps of S1, selecting a test fault sample covering fault modes which can be diagnosed by all airborne PHM systems; s2, determining a fault simulation method of the fault sample aiming at each test fault sample; s3, giving specific fault diagnosis qualified criteria to each test fault sample; s4, performing fault simulation on each test fault sample at least once according to the fault simulation method, and determining a fault diagnosis result; and S5, providing a test conclusion whether the test is qualified or not based on the fault diagnosis qualified criterion and the fault diagnosis result. The method for testing the fault diagnosis function of the airborne PHM system can guide the development of the fault diagnosis function test of the airborne PHM system.
Description
Technical Field
The application belongs to the technical field of airplane system tests, and particularly relates to a fault diagnosis function test method for an airborne PHM system.
Background
The airborne prediction and health management system is called an airborne PHM system for short. With the increasing complexity of the design and development of the aircraft PHM system, the complexity of the PHM-related fault diagnosis model logic of the aircraft PHM system also increases.
The onboard PHM system is generally managed through software and hardware configuration, functions such as fault diagnosis, state monitoring and service life monitoring are achieved, when various faults of various onboard systems are diagnosed, the diagnosis types are multiple, whether the onboard PHM system can detect numerous faults or not and can give correct detection results, and verification needs to be carried out through tests.
Disclosure of Invention
In order to solve at least one of the technical problems, the invention designs a fault diagnosis function test method of an airborne PHM system, which is used for screening fault samples of a test object, providing a fault simulation method and a qualification criterion of the test fault samples and providing a basis for test implementation and test result judgment.
The application provides an airborne PHM system fault diagnosis functional test method, mainly includes:
s1, selecting a test fault sample covering fault modes which can be diagnosed by all airborne PHM systems;
s2, determining a fault simulation method of the fault sample aiming at each test fault sample;
s3, giving specific fault diagnosis qualified criteria to each test fault sample;
s4, performing fault simulation on each test fault sample at least once according to the fault simulation method, and determining a fault diagnosis result;
and S5, providing a test conclusion whether the test is qualified or not based on the fault diagnosis qualified criterion and the fault diagnosis result.
Preferably, in step S2, the fault simulation method includes a physical simulation and/or an analog simulation.
Preferably, in step S3, the giving of the specific fault diagnosis qualified criterion includes:
and providing a maintenance information name and a corresponding fault reason under the qualified criterion, wherein the maintenance information refers to a maintenance task for guiding maintenance personnel to carry out fault maintenance work, and the fault reason refers to a fault source or a fuzzy group formed by fault pieces in a combined mode.
Preferably, the step S4 of performing the fault simulation according to the physical simulation method includes:
manufacturing real faults of the diagnosed object on a real object of the diagnosed object by changing the normal state of hardware or software, and performing off-line fault injection;
and electrifying the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
Preferably, the step S4 of performing the fault simulation according to the simulation method includes:
powering on the diagnosed object;
and on the simulation system of the diagnosed object, simulating a fault detection result according to the incidence relation between the fault of the diagnosed object and the test to indirectly manufacture the fault of the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
Preferably, step S5 further includes:
s51, recording test fault sample information including the test fault sample, a fault simulation method and a fault diagnosis qualified criterion;
step S52, recording diagnosis result information containing maintenance information names and fault reasons;
and S53, judging a test result according to the test record content, wherein the test result is qualified when the actual diagnosis result is consistent with the fault diagnosis qualified criterion, and the test result is unqualified otherwise.
The method for testing the fault diagnosis function of the airborne PHM system can guide the development of the fault diagnosis function test of the airborne PHM system.
Drawings
Fig. 1 is a flowchart of an embodiment of a method for testing a fault diagnosis function of an onboard PHM system according to the present application.
FIG. 2 is a diagram illustrating qualifying criteria in accordance with a preferred embodiment of the present application.
FIG. 3 is a schematic diagram of a diagnostic result record according to a preferred embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are implementations that are part of this application and not all implementations. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
When the fault diagnosis function test design is carried out, due to the fact that the test sample size is large, a test object fault sample needs to be screened, a fault simulation method and a qualification criterion of the test fault sample are provided, a basis is provided for implementation of a test and judgment of a test result, aiming at the fault diagnosis function test requirement of the airborne PHM system, the application designs a test design process formed by key elements such as selection of the test fault sample, determination of the fault simulation method, determination of the qualification criterion, determination of a test implementation process and test records, and the like, so that the fault diagnosis function test design method of the airborne PHM system is formed and is used for supporting development of the fault diagnosis function test of the airborne PHM system.
The application provides a fault diagnosis functional test method of an airborne PHM system, which mainly comprises the following steps:
s1, selecting a test fault sample covering all fault modes which can be diagnosed by the airborne PHM system.
And S2, determining a fault simulation method of the fault sample aiming at each test fault sample.
In some alternative embodiments, the fault simulation method includes a physical simulation and/or an analog simulation. The physical simulation mainly refers to the actual fault of the diagnosed object which is made on the physical object of the diagnosed object by changing the normal state of hardware or software. The simulation mainly refers to that on a simulation system of a diagnosed object, a fault detection result is simulated and simulated according to the incidence relation between the fault of the diagnosed object and a test, so that the fault of the diagnosed object is indirectly manufactured.
In an alternative embodiment, the fault simulation method may also distinguish between hardware simulation and software simulation.
And S3, giving a specific fault diagnosis qualified criterion for each test fault sample.
In some optional embodiments, the giving of the specific failure diagnosis qualified criterion includes:
and providing a maintenance information name and a corresponding fault reason under the qualified criterion, wherein the maintenance information refers to a maintenance task for guiding maintenance personnel to carry out fault maintenance work, and the fault reason refers to a fault source or a fuzzy group formed by fault pieces in a combined mode.
This embodiment forms a qualification criteria table as shown in fig. 2.
And S4, performing fault simulation on each test fault sample at least once according to the fault simulation method, and determining a fault diagnosis result.
In some optional embodiments, performing fault simulation according to the physical simulation method includes:
manufacturing real faults of the diagnosed object on a real object of the diagnosed object by changing the normal state of hardware or software, and performing off-line fault injection;
and electrifying the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
In some optional embodiments, performing fault simulation according to the simulation method includes:
powering on the diagnosed object;
and on the simulation system of the diagnosed object, simulating a fault detection result according to the incidence relation between the fault and the test of the diagnosed object to indirectly manufacture the fault of the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
And S5, providing a test conclusion whether the test is qualified or not based on the fault diagnosis qualified criterion and the fault diagnosis result.
In some optional embodiments, step S5 further comprises:
s51, recording test fault sample information including the test fault sample, a fault simulation method and a fault diagnosis qualified criterion;
step S52, recording diagnosis result information containing maintenance information names and fault reasons;
and S53, judging a test result according to the test record content, wherein the test result is qualified when the actual diagnosis result is consistent with the fault diagnosis qualified criterion, and the test result is unqualified otherwise.
This example forms a statistical table of diagnostic results as shown in fig. 3.
The method for testing the fault diagnosis function of the airborne PHM system can guide the development of the fault diagnosis function test of the airborne PHM system.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A fault diagnosis function test method for an airborne PHM system is characterized by comprising the following steps:
s1, selecting a test fault sample covering fault modes which can be diagnosed by all airborne PHM systems;
s2, determining a fault simulation method of the fault sample aiming at each test fault sample;
s3, giving specific fault diagnosis qualified criteria to each test fault sample;
s4, performing fault simulation on each test fault sample at least once according to the fault simulation method, and determining a fault diagnosis result;
and S5, providing a test conclusion whether the test is qualified or not based on the fault diagnosis qualified criterion and the fault diagnosis result.
2. The method for testing the fault diagnosis function of the onboard PHM system as recited in claim 1, wherein the fault simulation method in step S2 comprises a physical simulation and/or an analog simulation.
3. The method for testing fault diagnosis function of an onboard PHM system as claimed in claim 1, wherein in step S3, said giving out specific fault diagnosis eligibility criteria comprises:
and providing a maintenance information name and a corresponding fault reason under the qualified criterion, wherein the maintenance information refers to a maintenance task for guiding maintenance personnel to carry out fault maintenance work, and the fault reason refers to a fault source or a fuzzy group formed by fault pieces in a combined mode.
4. The method for testing the fault diagnosis function of the airborne PHM system as claimed in claim 2, wherein the step S4 of simulating the fault according to a physical simulation method comprises:
manufacturing real faults of the diagnosed object on a real object of the diagnosed object by changing the normal state of hardware or software, and performing off-line fault injection;
and electrifying the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
5. The method for testing the fault diagnosis function of the airborne PHM system as claimed in claim 2, wherein the step S4 of performing the fault simulation according to the simulation method includes:
powering on the diagnosed object;
and on the simulation system of the diagnosed object, simulating a fault detection result according to the incidence relation between the fault of the diagnosed object and the test to indirectly manufacture the fault of the diagnosed object, and reading the diagnosis result through an onboard PHM system display control terminal.
6. The method for testing the fault diagnosis function of the onboard PHM system as claimed in claim 1, wherein the step S5 further comprises:
s51, recording test fault sample information including the test fault sample, a fault simulation method and a fault diagnosis qualified criterion;
step S52, recording diagnosis result information containing maintenance information names and fault reasons;
and S53, judging a test result according to the test record content, wherein the test result is qualified when the actual diagnosis result is consistent with the fault diagnosis qualified criterion, and the test result is unqualified otherwise.
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| CN202211613256.0A CN115599079A (en) | 2022-12-15 | 2022-12-15 | Airborne PHM system fault diagnosis function test method |
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| CN202211613256.0A CN115599079A (en) | 2022-12-15 | 2022-12-15 | Airborne PHM system fault diagnosis function test method |
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Citations (5)
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|---|---|---|---|---|
| CN103927343A (en) * | 2014-03-28 | 2014-07-16 | 北京航空航天大学 | Comprehensive diagnosis and prediction ability verifying method of PHM (prognostics and health management) system |
| CN109814529A (en) * | 2019-01-23 | 2019-05-28 | 北京博得交通设备有限公司 | A kind of train door prognostic and health management system |
| CN111915101A (en) * | 2020-08-17 | 2020-11-10 | 安徽三禾一信息科技有限公司 | Complex equipment fault prediction method and system based on LPP-HMM method |
| CN113602526A (en) * | 2021-08-27 | 2021-11-05 | 中国航空工业集团公司上海航空测控技术研究所 | Verification test method and system for aircraft electromechanical fault prediction and health management system |
| CN114925536A (en) * | 2022-05-31 | 2022-08-19 | 南京航空航天大学 | Airborne system PHM testability modeling and diagnosis strategy optimization method and device |
-
2022
- 2022-12-15 CN CN202211613256.0A patent/CN115599079A/en active Pending
Patent Citations (5)
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| CN103927343A (en) * | 2014-03-28 | 2014-07-16 | 北京航空航天大学 | Comprehensive diagnosis and prediction ability verifying method of PHM (prognostics and health management) system |
| CN109814529A (en) * | 2019-01-23 | 2019-05-28 | 北京博得交通设备有限公司 | A kind of train door prognostic and health management system |
| CN111915101A (en) * | 2020-08-17 | 2020-11-10 | 安徽三禾一信息科技有限公司 | Complex equipment fault prediction method and system based on LPP-HMM method |
| CN113602526A (en) * | 2021-08-27 | 2021-11-05 | 中国航空工业集团公司上海航空测控技术研究所 | Verification test method and system for aircraft electromechanical fault prediction and health management system |
| CN114925536A (en) * | 2022-05-31 | 2022-08-19 | 南京航空航天大学 | Airborne system PHM testability modeling and diagnosis strategy optimization method and device |
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