Aircraft airborne equipment characteristic analysis and control method and system thereof

Abstract

The invention belongs to the technical field of airplane airborne equipment characteristic analysis and control, and particularly relates to an airplane airborne equipment characteristic analysis and control method and a system thereof, which can establish reliable and efficient analysis and control for design, production and test links of airborne equipment, perform characteristic analysis on the airborne equipment in a classified and layered manner, and improve the reliability of the airborne equipment. According to the method, the problem of omission of characteristic identification possibly existing in design is reduced, effective quality control of important characteristics in production, test, use and maintenance can be ensured by specifying the characteristic management and control process of each level, and finally, the design quality of airborne equipment is ensured to be realized.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft onboard equipment characteristic analysis and control, and specifically relates to an aircraft onboard equipment characteristic analysis and control method and system. Background Art

[0002] Characteristics are inherent attributes of products, which are the performance, parameters and other technical requirements of products. The main characteristics are function, interchangeability, life, safety and coordination. The management of characteristics requires a classification process based on their importance. Characteristics are generally divided into three categories, namely key characteristics, important characteristics and general characteristics.

[0003] During the aircraft model development process, the characteristics need to be managed and controlled. During the airborne equipment stage, the characteristics of the airborne equipment level need to be analyzed and managed.

[0004] At present, there is no mature and reliable method for the characteristic analysis of airborne equipment. The characteristic management link is mainly concentrated on the characteristic category, characteristic classification, drawing number marking level and the quality control process of key parts. A reliable and efficient analysis and control process has not yet been established for the design, production and testing of airborne equipment. In view of this, this application is proposed. Summary of the invention

[0005] The purpose of this application is to provide a method and system for analyzing and controlling characteristics of aircraft onboard equipment to overcome or alleviate at least one of the known technical deficiencies.

[0006] The technical solution of this application is:

[0007] On the one hand, a method for analyzing and controlling characteristics of aircraft onboard equipment is provided, comprising:

[0008] Step 1: Analysis of functional characteristics of airborne equipment:

[0009] S11. Identify the level of airborne equipment;

[0010] S12, obtaining the functions of each agreed level of the airborne equipment hardware;

[0011] S13. Identify the failure status, failure mode and failure cause of each agreed level of the airborne equipment hardware;

[0012] S14. Determine the functional characteristics level of each agreed level of the airborne equipment hardware;

[0013] S15. Determine the functional failure control measures and characteristic levels of each agreed level of airborne equipment hardware;

[0014] Step 2: Analysis of performance characteristics of airborne equipment:

[0015] S21. Obtain the performance of each agreed level of the airborne equipment hardware;

[0016] S22. Determine the performance characteristic levels of each agreed level of airborne equipment hardware;

[0017] S23. Identify the failure modes and causes of each agreed level of performance of the airborne equipment hardware;

[0018] S24. Determine the control measures and characteristic levels of performance failures at each agreed level of airborne equipment hardware;

[0019] Step 3: Control the characteristics of airborne equipment:

[0020] The characteristics of airborne equipment are controlled from the aspects of demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

[0021] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristics analysis and control method, in S11, the airborne equipment is analyzed according to the complexity and volume of the airborne equipment, and the airborne equipment is hierarchically divided into field replaceable units LRU / field replaceable modules LRM and field replaceable units SRU / assemblies, functional circuits / components, and components / parts.

[0022] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S12, the functions of each level of the airborne equipment's field replaceable units LRU / field replaceable modules LRM and field replaceable units SRU / components, functional circuits / components, and components / parts are obtained from the development specifications, development plans, or failure mode impact analysis reports.

[0023] According to at least one embodiment of the present application, in the above-mentioned aircraft onboard equipment characteristic analysis and control method, in S13, the functional failure status, failure mode, and failure cause are listed for the line replaceable unit LRU / line replaceable module LRM;

[0024] For field replaceable units SRU / assemblies, functional circuits / components, components / parts, find and list the functional failure status, failure mode, and failure cause based on the FMEA report.

[0025] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S14, the functional characteristic level of the line replaceable unit LRU / line replaceable module LRM is obtained from the airborne equipment technical requirements;

[0026] The functional characteristic level of the line replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of its failure on the line replaceable unit LRU / line replaceable module LRM, which is specifically determined based on the FMEA analysis results:

[0027] If the failure mode severity category corresponding to a function includes Level I, the function is a critical function;

[0028] If the failure mode severity category corresponding to a function does not include Level I but includes Level II, the function is an important function;

[0029] Other functions are general functions.

[0030] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S15, for the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed from the aspects of design, manufacturing and maintenance guarantee such as working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell inclusion design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.;

[0031] Determine the characteristic levels of the functional fault control measures for each agreed level of the airborne equipment hardware, as follows:

[0032] Key measures: Deviation of control measures directly leads to failure of key functions or occurrence of Type I failure mode;

[0033] Important measures: Deviation from control measures directly leads to failure of important functions or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key functions or occurrence of Type I failure mode;

[0034] General measures: other control measures besides key measures and important measures.

[0035] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristics analysis and control method, in S21, the performance of each agreed level of the airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specification.

[0036] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S22, according to the severity category of the failure mode caused by the performance deviation, the characteristic level of each agreed level performance of the airborne equipment hardware is determined, specifically:

[0037] The severity categories include Level I, which is critical performance;

[0038] The severity category does not include Level I, but includes Level II, which is an important performance;

[0039] The severity category does not include level I and II, which is general performance.

[0040] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S23, the failure mode and failure cause caused by the performance deviation of each agreed level of the airborne equipment hardware are identified based on the FMEA report.

[0041] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control method, in S24, control measures are determined according to the failure mode and failure cause caused by the deviation of the product performance indicator;

[0042] Determine the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware, specifically:

[0043] Key measures: Deviation of control measures directly leads to failure of key performance or occurrence of Type I failure mode;

[0044] Important measures: Deviation from control measures directly leads to failure of important performance or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key performance or occurrence of Type I failure mode;

[0045] General measures: other control measures besides key measures and important measures.

[0046] On the other hand, an aircraft airborne equipment characteristic analysis and control system is provided, including an airborne equipment function characteristic analysis module, an airborne equipment performance characteristic analysis module, and an airborne equipment characteristic control module:

[0047] The airborne equipment functional characteristics analysis module includes:

[0048] S11 unit, used to identify the level of onboard equipment;

[0049] S12 unit, used to obtain the functions of each agreed level of the airborne equipment hardware;

[0050] S13 unit, used to identify the failure status, failure mode and failure cause of each agreed level of the airborne equipment hardware;

[0051] S14 unit is used to determine the functional characteristics level of each agreed level of airborne equipment hardware;

[0052] S15 unit is used to determine the functional fault control measures and characteristic levels of each agreed level of airborne equipment hardware;

[0053] The airborne equipment performance characteristics analysis module includes:

[0054] S21 unit, used to obtain the performance of each agreed level of the airborne equipment hardware;

[0055] S22 unit, used to determine the performance characteristic levels of each agreed level of airborne equipment hardware;

[0056] S23 unit, used to identify the failure modes and causes of the performance of each agreed level of the airborne equipment hardware;

[0057] S24 unit is used to determine the control measures and characteristic levels of performance failures at each agreed level of airborne equipment hardware;

[0058] The airborne equipment characteristic control setting controls the airborne equipment characteristics from the aspects of demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

[0059] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control system, in the S11 unit, the airborne equipment is analyzed according to the complexity and volume of the airborne equipment, and the airborne equipment is hierarchically divided into line replaceable units LRU / line replaceable modules LRM and interior replaceable units SRU / assemblies, functional circuits / components, components / parts;

[0060] In the S12 unit, the functions of each level of the airborne equipment line replaceable unit LRU / line replaceable module LRM and line replaceable unit SRU / assembly, functional circuit / component, and components / parts are obtained from the development specification, development plan or failure mode effect analysis report;

[0061] In the S13 unit, the line replaceable unit LRU / line replaceable module LRM lists the functional failure status, failure mode, and failure cause;

[0062] For field replaceable units SRU / assemblies, functional circuits / components, components / parts, find and list the functional failure status, failure mode, and failure cause based on the FMEA report.

[0063] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control system, in the S14 unit, the functional characteristic level of the line replaceable unit LRU / line replaceable module LRM is obtained from the airborne equipment technical requirements;

[0064] The functional characteristic level of the line replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of its failure on the line replaceable unit LRU / line replaceable module LRM, which is specifically determined based on the FMEA analysis results:

[0065] If the failure mode severity category corresponding to a function includes Level I, the function is a critical function;

[0066] If the failure mode severity category corresponding to a function does not include Level I but includes Level II, the function is an important function;

[0067] Other functions are general functions.

[0068] In unit S15, for the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed from the aspects of design, manufacturing and maintenance such as working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell containment design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.;

[0069] Determine the characteristic levels of the functional fault control measures for each agreed level of the airborne equipment hardware, as follows:

[0070] Key measures: Deviation of control measures directly leads to failure of key functions or occurrence of Type I failure mode;

[0071] Important measures: Deviation from control measures directly leads to failure of important functions or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key functions or occurrence of Type I failure mode;

[0072] General measures: other control measures besides key measures and important measures.

[0073] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control system, in the S21 unit, the performance of each agreed level of the airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specification;

[0074] In the S22 unit, the characteristic level of each agreed level of performance of the airborne equipment hardware is determined according to the severity category of the failure mode caused by performance deviation, specifically:

[0075] The severity categories include Level I, which is critical performance;

[0076] The severity category does not include Level I, but includes Level II, which is an important performance;

[0077] The severity category does not include level I and II, which is general performance.

[0078] According to at least one embodiment of the present application, in the above-mentioned aircraft airborne equipment characteristic analysis and control system, in the S23 unit, the failure mode and failure cause caused by the deviation of the performance of each agreed level of the airborne equipment hardware are identified according to the FMEA report;

[0079] In unit S24, control measures are determined based on the failure modes and causes caused by deviations in product performance indicators;

[0080] Determine the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware, specifically:

[0081] Key measures: Deviation of control measures directly leads to failure of key performance or occurrence of Type I failure mode;

[0082] Important measures: Deviation from control measures directly leads to failure of important performance or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key performance or occurrence of Type I failure mode;

[0083] General measures: other control measures besides key measures and important measures.

[0084] This application has at least the following beneficial technical effects:

[0085] The aircraft airborne equipment characteristic analysis and control method and system disclosed in the above-mentioned embodiment can establish reliable and efficient analysis and control for the design, production and testing of airborne equipment. By analyzing the characteristics of airborne equipment by category and level, the problem of missing characteristic identification that may exist in the design is reduced. By specifying the characteristic control process at each level, it can ensure that the key characteristics are effectively controlled in production, testing, use and maintenance, and finally ensure that the design quality of the airborne equipment is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 is a schematic diagram of a method for analyzing and controlling characteristics of aircraft onboard equipment provided in an embodiment of the present application;

[0087] Figure 2 It is a schematic diagram of the aircraft onboard equipment characteristic analysis and control system provided in an embodiment of the present application.

[0088] In order to better illustrate the present embodiment, some contents of the drawings may be omitted, which is only used for illustrative purposes and should not be construed as limiting the present application. DETAILED DESCRIPTION

[0089] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be described in further detail in detail and in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design.

[0090] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall have the usual meanings understood by those of ordinary skill in the art to which this application belongs. The words used in the description of this application to indicate orientation are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. The word "include" used in the description of this application indicates that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0091] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "installation", "connection" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Technical personnel in the field can understand its specific meaning in this application according to the specific circumstances.

[0092] The analysis of airborne equipment characteristics starts at the scheme stage and ends at the prototype development stage. When conducting the analysis of airborne equipment characteristics, the analysis results of the upper system can be fully inherited and analyzed from the aspects of function and performance. The objects of airborne equipment characteristics analysis are the line replaceable units LRU / line replaceable modules LRM and the line replaceable units SRU components, functional circuits / components, components / parts they contain.

[0093] A method for analyzing and controlling characteristics of aircraft onboard equipment, such as Figure 1 shown.

[0094] Step 1: Analyze the functional characteristics of airborne equipment.

[0095] S11. Identify the level of airborne equipment.

[0096] Analyze the airborne equipment according to its complexity and volume. If the signing object in the airborne equipment agreement is an airborne equipment with a simple structure, the airborne equipment manufacturing unit may simplify the analysis level according to the actual situation; if the signing object in the agreement is a subsystem, the airborne equipment manufacturing unit should first identify the line replaceable units LRU / line replaceable modules LRM contained in the subsystem, and then analyze downward layer by layer from the line replaceable units LRU / line replaceable modules LRM level, which are divided into line replaceable units LRU / line replaceable modules LRM and line replaceable units SRU / assemblies, functional circuits / components, and components / parts.

[0097] S12. Obtain the functions of each agreed level of the onboard equipment hardware.

[0098] From the development specifications, development plans or failure mode effect analysis reports, obtain the functions of each level of the airborne equipment's line replaceable units LRU / line replaceable modules LRM and line replaceable units SRU / assemblies, functional circuits / components, components / parts.

[0099] S13. Identify the failure status, failure mode and cause of each agreed level of the airborne equipment hardware.

[0100] The airborne equipment contractor needs to identify the failure states, failure modes and failure causes corresponding to the functions of each agreed level of the airborne equipment hardware.

[0101] The functional failure status, failure mode and failure cause of the line replaceable unit LRU / line replaceable module LRM need to be listed. The key and important functions and their failure status of the line replaceable unit LRU / line replaceable module LRM have been given by the chief designer in the technical requirements for airborne equipment, and the airborne equipment manufacturing unit can directly undertake them; general functions do not need to list the failure status.

[0102] For field replaceable units SRU / assemblies, functional circuits / components, components / parts, the functional failure status, failure mode and failure cause must be found and listed based on the FMEA report.

[0103] S14. Determine the functional characteristics level of each agreed level of the airborne equipment hardware.

[0104] The chief designer has given the functional characteristic levels of the line replaceable unit LRU / line replaceable module LRM in the technical requirements for airborne equipment, and the airborne equipment manufacturing unit can directly undertake them.

[0105] The functional characteristic level of the internal field replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of its failure on the failure of the external field replaceable unit LRU / external field replaceable module LRM, which can be specifically determined based on the FMEA analysis results: if the failure mode severity category corresponding to the function includes level I, the function is a key function; if the failure mode severity category corresponding to the function does not include level I but includes level II, the function is an important function; other functions are general functions.

[0106] S15. Determine the functional failure control measures and characteristic levels for each agreed level of airborne equipment hardware.

[0107] With the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed in the design, manufacturing and maintenance aspects of working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell containment design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.

[0108] Determine the characteristic levels of the functional fault control measures for each agreed level of the airborne equipment hardware, as follows:

[0109] Critical measures: Deviation of control measures directly leads to the failure of critical functions or the occurrence of Type I failure mode.

[0110] Important measures: Deviation from control measures directly leads to the failure of important functions or the occurrence of a Type II failure mode, or deviation from control measures may lead to the failure of key functions or the occurrence of a Type I failure mode.

[0111] General measures: other control measures besides key measures and important measures.

[0112] Step 2: Analyze the performance characteristics of airborne equipment.

[0113] S21. Obtain the performance of each agreed level of the airborne equipment hardware.

[0114] The performance of each agreed level of airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specifications.

[0115] S22. Determine the performance characteristic levels of each agreed level of the airborne equipment hardware.

[0116] According to the severity category of the failure mode caused by performance deviation, the characteristic level of each agreed level of performance of the airborne equipment hardware is determined as follows:

[0117] The severity categories include Level I, which is critical performance;

[0118] The severity category does not include Level I, but includes Level II, which is an important performance;

[0119] The severity category does not include level I and II, which is general performance.

[0120] S23. Identify the failure modes and causes of each agreed level of performance of the airborne equipment hardware.

[0121] The airborne equipment contractor needs to identify the failure modes and causes of failures caused by performance deviations of each agreed level of the airborne equipment hardware based on the Failure Mode and Effects Analysis (FMEA) report.

[0122] S24. Determine the control measures and characteristic levels for performance failures at each agreed level of airborne equipment hardware.

[0123] The airborne equipment contractor needs to determine control measures based on the failure modes and causes caused by deviations in product performance indicators.

[0124] Determine the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware, as follows:

[0125] Critical measures: Deviation from control measures directly leads to failure of critical performance or occurrence of Type I failure mode.

[0126] Important measures: Deviation from control measures directly leads to failure of important performance or Type II failure mode, or deviation from control measures may lead to failure of key performance or Type I failure mode.

[0127] General measures: other control measures besides key measures and important measures.

[0128] The following table can be filled in for the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware:

[0129] Step 3: Control the characteristics of airborne equipment.

[0130] The characteristics of airborne equipment are controlled from nine aspects, including demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

[0131] An aircraft airborne equipment characteristic analysis and control system is used to implement the aircraft airborne equipment characteristic analysis and control method disclosed in the above embodiment, including an airborne equipment function characteristic analysis module, an airborne equipment performance characteristic analysis module, and an airborne equipment characteristic control module:

[0132] The airborne equipment functional characteristics analysis module includes:

[0133] S11 unit, used to identify the level of onboard equipment;

[0134] S12 unit, used to obtain the functions of each agreed level of the airborne equipment hardware;

[0135] S13 unit, used to identify the failure status, failure mode and failure cause of each agreed level of the airborne equipment hardware;

[0136] S14 unit is used to determine the functional characteristics level of each agreed level of airborne equipment hardware;

[0137] S15 unit is used to determine the functional fault control measures and characteristic levels of each agreed level of airborne equipment hardware;

[0138] The airborne equipment performance characteristics analysis module includes:

[0139] S21 unit, used to obtain the performance of each agreed level of the airborne equipment hardware;

[0140] S22 unit, used to determine the performance characteristic levels of each agreed level of airborne equipment hardware;

[0141] S23 unit, used to identify the failure modes and causes of the performance of each agreed level of the airborne equipment hardware;

[0142] S24 unit is used to determine the control measures and characteristic levels of performance failures at each agreed level of airborne equipment hardware;

[0143] The airborne equipment characteristic control setting controls the airborne equipment characteristics from the aspects of demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

[0144] In the S11 unit, the airborne equipment is analyzed according to its complexity and volume, and the airborne equipment is divided into line replaceable units LRU / line replaceable modules LRM and line replaceable units SRU / assemblies, functional circuits / components, and components / parts.

[0145] In the S12 unit, the functions of each level of the airborne equipment's line replaceable units LRU / line replaceable modules LRM and line replaceable units SRU / assemblies, functional circuits / components, and components / parts are obtained from the development specifications, development plan, or failure mode effect analysis report.

[0146] In the S13 unit, the functional failure status, failure mode and failure cause are listed for the field replaceable unit LRU / field replaceable module LRM; the functional failure status, failure mode and failure cause are listed for the field replaceable unit SRU / assembly, functional circuit / component, component / part based on the FMEA report.

[0147] In the S14 unit, the functional characteristic level of the line replaceable unit LRU / line replaceable module LRM is obtained from the technical requirements of the airborne equipment; the functional characteristic level of the interior replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of their failure on the failure of the line replaceable unit LRU / line replaceable module LRM, which is specifically determined based on the FMEA analysis results:

[0148] If the failure mode severity category corresponding to the function includes Level I, the function is a key function; if the failure mode severity category corresponding to the function does not include Level I but includes Level II, the function is an important function; other functions are general functions.

[0149] In unit S15, for the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed from the aspects of design, manufacturing and maintenance assurance, such as working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell containment design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.; the characteristic levels of functional failure control measures for each agreed level of airborne equipment hardware are determined, as follows: Critical measures: deviation from control measures directly leads to the failure of critical functions or the occurrence of Type I failure mode; Important measures: deviation from control measures directly leads to the failure of important functions or the occurrence of Type II failure mode, or deviation from control measures may cause the failure of critical functions or the occurrence of Type I failure mode; General measures: other control measures besides critical measures and important measures.

[0150] In the S21 unit, the performance of each agreed level of the airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specifications.

[0151] In the S22 unit, the characteristic levels of each agreed level of performance of the airborne equipment hardware are determined according to the severity category of the failure mode caused by performance deviation. Specifically, the severity category includes level I, which is a critical performance; the severity category does not include level I but includes level II, which is an important performance; the severity category does not include levels I and II, which is a general performance.

[0152] In the S23 unit, the failure modes and causes caused by the performance deviations of each agreed level of the airborne equipment hardware are identified based on the FMEA report.

[0153] In the S24 unit, control measures are determined based on the failure modes and causes caused by the deviation of product performance indicators; the characteristic levels of performance failure control measures for each agreed level of airborne equipment hardware are determined, specifically:

[0154] Key measures: deviation from control measures directly leads to the failure of key performance or the occurrence of Type I failure mode; Important measures: deviation from control measures directly leads to the failure of important performance or the occurrence of Type II failure mode, or deviation from control measures may lead to the failure of key performance or the occurrence of Type I failure mode; General measures: other control measures besides key measures and important measures.

[0155] The aircraft airborne equipment characteristic analysis and control method and system disclosed in the above-mentioned embodiment can establish reliable and efficient analysis and control for the design, production and testing of airborne equipment, reduce the demand for airborne equipment and the errors and omissions in the design and development process of airborne equipment, and ensure that the airborne equipment meets the safety requirements of airworthiness regulations.

[0156] In addition, technicians in the field should also be able to realize that the various modules and units of the aircraft airborne equipment characteristic analysis and control method and its system disclosed in the embodiments of the present application can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, this application generally describes them according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Technicians in the field can choose to adopt different methods to implement the described functions for each specific application and its actual constraints, but such implementation should not be considered to be beyond the scope of this application.

[0157] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A method for analyzing and controlling characteristics of aircraft onboard equipment, characterized in that: include: Step 1: Analysis of functional characteristics of airborne equipment: S11. Identify the hardware agreed level of the onboard equipment; S12, obtaining the functions of each agreed level of the airborne equipment hardware; S13. Identify the functional failure status, failure mode and failure cause of each agreed level of the airborne equipment hardware; S14. Determine the functional characteristics level of each agreed level of the airborne equipment hardware; S15. Determine the functional failure control measures and characteristic levels of each agreed level of airborne equipment hardware; Step 2: Analysis of performance characteristics of airborne equipment: S21. Obtain the performance of each agreed level of the airborne equipment hardware; S22. Determine the failure modes and causes of each agreed level of performance of the airborne equipment hardware; S24. Determine the control measures and characteristic levels of performance failures at each agreed level of airborne equipment hardware; Step 3: Control the characteristics of airborne equipment: The characteristics of airborne equipment are controlled from the aspects of demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

2. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 1, characterized in that: In S11, the airborne equipment is analyzed according to the complexity and volume of the airborne equipment, and the agreed levels of the airborne equipment hardware include line replaceable units LRU / line replaceable modules LRM, line replaceable units SRU / assemblies, functional circuits / components and components / parts.

3. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 2, characterized in that: In S12, the functions of each level of the airborne equipment's line replaceable units LRU / line replaceable modules LRM, line replaceable units SRU / assemblies, functional circuits / components, and components / parts are obtained from the airborne equipment development specifications, development plans, or failure mode impact analysis reports.

4. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 3, characterized in that: In S13, the functional failure status, failure mode, and failure cause of the line replaceable unit LRU / line replaceable module LRM are listed; For field replaceable units SRU / assemblies, functional circuits / components, components / parts, the functional failure status, failure mode and failure cause are listed based on the report.

5. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 4, characterized in that: In S14, the functional characteristic level of the line replaceable unit LRU / line replaceable module LRM is obtained from the technical requirements of the airborne equipment; The functional characteristic level of the line replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of its failure on the line replaceable unit LRU / line replaceable module LRM, which is specifically determined based on the FMEA analysis results: If the failure mode severity category corresponding to a function includes Level I, the function is a critical function; If the failure mode severity category corresponding to a function does not include Level I but includes Level II, the function is an important function; Other functions are general functions.

6. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 5, characterized in that: In S15, for the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed from the aspects of design, manufacturing and maintenance assurance, such as working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell containment design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.; Determine the characteristic levels of the functional fault control measures for each agreed level of the airborne equipment hardware, as follows: Key measures: Deviation of control measures directly leads to failure of key functions or occurrence of Type I failure mode; Important measures: Deviation from control measures directly leads to failure of important functions or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key functions or occurrence of Type I failure mode; General measures: other control measures besides key measures and important measures.

7. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 6, characterized in that: In S21, the performance of each agreed level of the airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specification.

8. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 7, characterized in that: In S22, the characteristic level of each agreed level of performance of the airborne equipment hardware is determined according to the severity category of the failure mode caused by performance deviation, specifically: The severity categories include Level I, which is critical performance; The severity category does not include Level I, but includes Level II, which is an important performance; The severity category does not include level I and II, which is general performance.

9. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 8, characterized in that: In S23, the failure modes and causes caused by the performance deviation of each agreed level of the airborne equipment hardware are identified based on the FMEA report.

10. The method for analyzing and controlling characteristics of aircraft onboard equipment according to claim 9, characterized in that: In S24, control measures are determined based on the failure modes and causes caused by the deviation of product performance indicators; Determine the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware, specifically: Key measures: Deviation of control measures directly leads to failure of key performance or occurrence of Type I failure mode; Important measures: Deviation from control measures directly leads to failure of important performance or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key performance or occurrence of Type I failure mode; General measures: other control measures besides key measures and important measures.

11. An aircraft onboard equipment characteristics analysis and control system, characterized in that: Including airborne equipment function characteristic analysis module, airborne equipment performance characteristic analysis module, airborne equipment characteristic control module: The airborne equipment functional characteristics analysis module includes: S11 unit, used to identify the agreed levels of the onboard equipment hardware; S12 unit, used to obtain the functions of each agreed level of the airborne equipment hardware; S13 unit, used to identify the failure status, failure mode and failure cause of each agreed level of the airborne equipment hardware; S14 unit is used to determine the functional characteristics level of each agreed level of airborne equipment hardware; S15 unit is used to determine the functional fault control measures and characteristic levels of each agreed level of airborne equipment hardware; The airborne equipment performance characteristics analysis module includes: S21 unit, used to obtain the performance of each agreed level of the airborne equipment hardware; S22 unit, used to determine the performance characteristic levels of each agreed level of airborne equipment hardware; S23 unit, used to identify the failure modes and causes of each agreed level of performance of the airborne equipment hardware; S24 unit is used to determine the control measures and characteristic levels of performance failures at each agreed level of airborne equipment hardware; The airborne equipment characteristic control setting controls the airborne equipment characteristics from the aspects of demand control, technical status, key processes, inspection management, measurement management, non-conforming product management, ground test management, technical data, fault handling and measures.

12. The aircraft onboard equipment characteristic analysis and control system according to claim 11, characterized in that: In the S11 unit, the airborne equipment is analyzed according to its complexity and volume, and the airborne equipment is divided into line replaceable units LRU / line replaceable modules LRM and line replaceable units SRU / assemblies, functional circuits / components, components / parts; In the S12 unit, the functions of each level of the airborne equipment line replaceable unit LRU / line replaceable module LRM and line replaceable unit SRU / assembly, functional circuit / component, and components / parts are obtained from the development specification, development plan or failure mode effect analysis report; In the S13 unit, the line replaceable unit LRU / line replaceable module LRM lists the functional failure status, failure mode, and failure cause; For field replaceable units SRU / assemblies, functional circuits / components, components / parts, find and list the functional failure status, failure mode, and failure cause based on the FMEA report.

13. The aircraft onboard equipment characteristic analysis and control system according to claim 12, characterized in that: In the S14 unit, the functional characteristic level of the line replaceable unit LRU / line replaceable module LRM is obtained from the technical requirements of the airborne equipment; The functional characteristic level of the line replaceable unit SRU / assembly, functional circuit / component and component / part is determined based on the impact of its failure on the line replaceable unit LRU / line replaceable module LRM, which is specifically determined based on the FMEA analysis results: If the failure mode severity category corresponding to a function includes Level I, the function is a critical function; If the failure mode severity category corresponding to a function does not include Level I but includes Level II, the function is an important function; Other functions are general functions. In unit S15, for the purpose of preventing or controlling the occurrence of airborne equipment failures, control measures are listed from the aspects of design, manufacturing and maintenance such as working environment, continuous working time, redundancy, derating, monitoring and alarm, weak link design, shell containment design, size, tolerance, roughness, installation form, casting process, processing technology, assembly process, inspection and measurement, preventive / corrective maintenance, transportation, storage, etc.; Determine the characteristic levels of the functional fault control measures for each agreed level of the airborne equipment hardware, as follows: Key measures: Deviation of control measures directly leads to failure of key functions or occurrence of Type I failure mode; Important measures: Deviation from control measures directly leads to failure of important functions or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key functions or occurrence of Type I failure mode; General measures: other control measures besides key measures and important measures.

14. The aircraft onboard equipment characteristic analysis and control system according to claim 13, characterized in that: In the S21 unit, the performance of each agreed level of the airborne equipment hardware is obtained from the performance technical requirements of each level of the product in the airborne equipment development specification; In the S22 unit, the characteristic level of each agreed level of performance of the airborne equipment hardware is determined according to the severity category of the failure mode caused by performance deviation, specifically: The severity categories include Level I, which is critical performance; The severity category does not include Level I, but includes Level II, which is an important performance; The severity category does not include level I and II, which is general performance.

15. The aircraft onboard equipment characteristic analysis and control system according to claim 14, characterized in that: In the S23 unit, the failure modes and causes caused by the performance deviation of each agreed level of the airborne equipment hardware are identified based on the FMEA report; In unit S24, control measures are determined based on the failure modes and causes caused by deviations in product performance indicators; Determine the characteristic levels of performance fault control measures for each agreed level of airborne equipment hardware, specifically: Key measures: Deviation of control measures directly leads to failure of key performance or occurrence of Type I failure mode; Important measures: Deviation from control measures directly leads to failure of important performance or occurrence of Type II failure mode, or deviation from control measures may lead to failure of key performance or occurrence of Type I failure mode; General measures: other control measures besides key measures and important measures.

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