FMEA analysis method and system based on interface
By adding interface nodes to the product's FMEA structure tree and performing failure analysis and risk analysis, the quality problems caused by interface failure in product design are solved, and the quality of product design is improved.
Patent Information
- Application Number
- CN202510398367.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-07-18
AI Technical Summary
The prior art still has failures outside FMEA analysis after product design, affecting product quality.
Add interface nodes to the product's FMEA structure tree to perform failure analysis and risk analysis of interface functions, and generate interface FMEA reports.
By identifying and optimizing interface relationships, quality problems caused by interface failure are reduced and product design quality is improved.
Smart Images
Figure CN120337533A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of FMEA analysis, and particularly to an interface-based FMEA analysis method and system. Background Art
[0002] Design Failure Mode and Effects Analysis (FMEA) is a combination of failure mode analysis and failure effect analysis, which evaluates and analyzes various possible risks in order to eliminate these risks or reduce them to an acceptable level on the basis of existing technologies. Currently, after product design, there are still failure situations outside the FMEA analysis, which affect product quality. Therefore, the FMEA analysis of product design needs to be further improved. Summary of the Invention
[0003] The purpose of the present application is to provide an interface-based FMEA analysis method and system, which can improve the quality of product design.
[0004] To achieve the above purpose, the present application provides the following solutions:
[0005] In a first aspect, the present application provides an interface-based FMEA analysis method, including:
[0006] According to the connection relationships between components in the target product and the connection relationships between components and external objects, add interface nodes under the components with connection relationships in the FMEA structure tree of the target product; each interface node represents the connection interface between two components, or the connection interface between a component and an external object;
[0007] Add interface functions to each interface node, and perform failure analysis and risk analysis on the interface functions;
[0008] Generate an interface FMEA report according to the failure analysis and risk analysis performed on the interface functions.
[0009] Optionally, adding interface functions to each interface node and performing failure analysis and risk analysis on the interface functions specifically include:
[0010] Add failure modes to the interface functions, as well as the corresponding failure consequences and failure causes of the failure modes; the failure modes added to the interface functions include the failure modes of the components corresponding to the interface nodes, the failure consequences are the failure modes of the upper-level nodes of the component nodes to which the interface nodes belong, and the failure causes are the failure modes of the lower-level nodes of the component nodes to which the interface nodes belong;
[0011] Add measures to the failure mode, and calculate the measure priority according to the severity of the failure consequence, the frequency of occurrence of the failure cause, and the detectability after adding the measures.
[0012] Optionally, after adding interface functions to each interface node and performing failure analysis and risk analysis on the interface functions, the interface-based FMEA analysis method further includes:
[0013] If the measure priority is higher than the set priority, optimize the interface function by adding optimization measures.
[0014] Optionally, the failure modes added to the interface function also include the failure modes in the failure library and the custom-added failure models.
[0015] Optionally, the measures added to the failure mode include preventive measures and detection measures.
[0016] Optionally, if there are multiple failure consequences corresponding to the failure mode, the severity used in calculating the measure priority is the maximum value among the severities corresponding to the failure consequences.
[0017] Optionally, before adding interface nodes under the components with connection relationships in the FMEA structure tree of the target product according to the connection relationships between the components in the target product and the connection relationships between the components and external objects, the interface-based FMEA analysis method further includes:
[0018] In the structure block diagram of the target product, create a connection relationship by connecting two components.
[0019] Optionally, add interface characteristics while adding interface functions to each interface node.
[0020] Optionally, the interface FMEA report includes: interface name, superior component, inferior component, interface function, function of the superior component, function of the inferior component, failure consequence, failure mode, failure cause, preventive measure, detection measure, and measure priority.
[0021] In a second aspect, the present application also provides an interface-based FMEA analysis system, including:
[0022] An interface node adding module, configured to add interface nodes under the components with connection relationships in the FMEA structure tree of the target product according to the connection relationships between the components in the target product and the connection relationships between the components and external objects; each interface node represents the connection interface between two components, or the connection interface between a component and an external object;
[0023] A failure and risk analysis module, configured to add interface functions to each interface node and perform failure analysis and risk analysis on the interface functions;
[0024] A report generation module, configured to generate an interface FMEA report according to the failure analysis and risk analysis performed on the interface functions.
[0025] According to the specific embodiments provided by the present application, the present application discloses the following technical effects:
[0026] The present application provides an FMEA analysis method and system based on interfaces. On the basis of performing FMEA analysis on each component in a product, FMEA analysis is performed on the interfaces formed by the connection relationships between components in the target product or the connection relationships between components and external objects, so as to identify risks in the interface relationships between components during the product design process, reduce quality problems caused by interface failures, and improve the product design quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0028] Figure 1 It is a schematic flowchart of an FMEA analysis method based on interfaces provided by an embodiment of the present application;
[0029] Figure 2 It is a schematic diagram of connecting two components provided by an embodiment of the present application;
[0030] Figure 3 It is a schematic diagram of an interface node and an interface node in a structure tree provided by an embodiment of the present application;
[0031] Figure 4 It is a schematic diagram of a failure model, failure consequence, and failure cause corresponding to an interface function in a structure tree provided by an embodiment of the present application;
[0032] Figure 5 It is a preventive measure and a detection measure corresponding to a failure cause in a structure tree provided by an embodiment of the present application;
[0033] Figure 6 It is a schematic diagram of an interface FMEA report provided by an embodiment of the present application;
[0034] Figure 7 It is a schematic diagram of functional modules of an FMEA analysis system based on interfaces provided by another embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0036] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0037] The present application provides an interface-based FMEA analysis method, as Figure 1 shown, the interface-based FMEA analysis method includes:
[0038] Step 101: According to the connection relationships between the components in the target product and the connection relationships between the components and external objects, add interface nodes under the components with connection relationships in the FMEA structure tree of the target product; each interface node represents the connection interface between two components or the connection interface between a component and an external object.
[0039] Step 102: Add interface functions to each interface node, and perform failure analysis and risk analysis on the interface functions.
[0040] Step 103: Generate an interface FMEA report according to the failure analysis and risk analysis performed on the interface functions.
[0041] The present application performs a structural analysis on the target product to establish the interfaces between the components. On the basis of performing FMEA analysis on each component in the product, FMEA analysis is performed on the interfaces formed by the connection relationships between the components in the target product or the connection relationships between the components and external objects, specifically including function analysis, failure analysis, risk analysis, and optimization, so as to reduce quality problems caused by interface failures and thus improve product quality.
[0042] Among them, before step 101, the interface-based FMEA analysis method further includes: in the structural block diagram of the target product, create a connection relationship by connecting two internal components to obtain an internal interface (II), and create a connection relationship between the component in the target product and an external object by connecting to obtain an external interface (OI), that is, the interfaces in the present application include internal interfaces and external interfaces. As Figure 2 shown, when the target product is a filter element, in the structural block diagram of the filter element, the end cap and the spring (external object) establish a connection relationship through connection, that is, the interface. The external interface formed by the end cap and the spring, and the interface name of the external interface is spring-end cap. As Figure 3As shown. In addition, the interface nodes of the corresponding nodes of the lower-level components will be displayed under the nodes of the upper-level components.
[0043] In an exemplary embodiment, if the interface node C is the interface node for connecting component A and component B, then the interface node corresponding to component A includes the interface node C, and the interface node corresponding to component B also includes the interface node C.
[0044] At least one interface node is included under one interface node. The present application generates an interface function list for each interface node, and the interface function list includes all the interface nodes of that interface node.
[0045] After step 101 of the present application, it further includes: performing functional analysis on the interfaces added to each interface node, and adding the functions and / or characteristics of the added interfaces.
[0046] Among them, step 102 specifically includes step 1021 and step 1022.
[0047] Step 102 is to perform failure analysis and risk analysis based on the interface functions added to each interface node.
[0048] Step 1021: Add failure modes to the interface functions, as well as the corresponding failure consequences and failure causes of the failure modes; adding failure modes to the interface functions includes the failure modes of the components corresponding to the interface nodes. The failure consequences are the failure modes of the upper-level nodes of the component nodes to which the interface nodes belong, and the failure causes are the failure modes of the lower-level nodes of the component nodes to which the interface nodes belong. Specifically, the failure mode added to the interface function is the failure mode that occurs when the interface function is not satisfied. The failure consequence is the failure mode of the upper-level node of the component node to which the interface node belongs, and the failure cause is the failure mode that occurs when the function of the component node to which the interface node belongs is not satisfied.
[0049] The upper-level node is the node corresponding to the upper-level component, and the lower-level node is the node corresponding to the lower-level component.
[0050] Adding failure modes to the interface functions also includes the failure modes in the failure library and the custom-added failure models. The failure modes added to the interface functions can be the occurred failures or the foreseeable possible failures.
[0051] Such as Figure 4 and Figure 5As shown, the interface node under the filter element node includes the interface node of the filter tank - latch - filter element. The interface function of the filter tank - latch - filter element is fixed by spring pressure, its characteristic is the positioning position, the failure mode is that the position positioning has deviation, the failure reason is that the seal surface size, form and position tolerance, and roughness design of the filter element are unreasonable, and the failure consequence is low filtration efficiency. The filter tank - latch - filter element is also displayed under the upper - level node customer interface of the filter element. There is a connection relationship between the component filter tank and the component filter element. When connecting, there is a latch in the middle as the medium.
[0052] Under the interface node of the filter element, there is also an interface node of the end - cap - filter paper. The interface function of the end - cap - filter paper is bonding, its characteristic is the bonding strength, the failure mode is low bonding strength, the failure reason is the wrong glue type, and the failure consequence is low filtration efficiency.
[0053] Step 1022: Add measures to the failure mode, and calculate the measure priority according to the severity of the failure consequence, the frequency of the occurrence of the failure reason, and the detectability after adding the measures.
[0054] The measures added to the failure mode are detection measures, and the measures added to the failure reason include preventive measures and detection measures.
[0055] If there are multiple failure consequences corresponding to the failure mode, the severity used when calculating the measure priority is the maximum value among the severities corresponding to the failure consequences.
[0056] Figure 4 In it, S represents severity, O represents frequency, D represents detectability, and the severity of each failure consequence, the frequency of the occurrence of the failure reason, and the detectability after adding the measures are all preset values.
[0057] This application also includes outputting a function failure matrix according to the relationship between the interface function, special effects and failure mode of the interface node.
[0058] As Figure 6 shown, add detection measures to the failure mode in the interface node of the filter tank - latch - filter element, add preventive measures and detection measures to the failure reason. The preventive measure is to select the filter paper specification according to the filter paper design specification, and the detection measure is the product reliability test; add preventive measures and detection measures to the failure mode of the interface node of the end - cap - filter paper. The preventive measure is to select the glue type according to the filter element design specification, and the detection measure is the tensile - pull - off force test.
[0059] After calculating the measure priority according to the severity of the failure consequence, the frequency after adding preventive measures to the failure reason, and the detectability after adding the measures, visually output the measure priority, and different colors are used to distinguish each measure priority.
[0060] In step 102, while adding the interface function to each interface node, add interface characteristics.
[0061] After step 102, the interface-based FMEA analysis method further includes: if the measure priority is higher than the set priority, the interface function is optimized by adding optimization measures.
[0062] Step 103 specifically includes: according to the failure analysis and risk analysis of the interface function, formulating optimization measures for the content with high measure priority. Combining the re-scoring of the optimization measures, generating a new measure priority, and then generating an interface FMEA report.
[0063] The interface FMEA report includes: interface name, upper-level component, lower-level component, interface function, function of the upper-level component, function of the lower-level component, characteristic category, failure consequence, severity, failure mode, failure cause, and preventive measures, frequency, detection measures, detection rate, and measure priority in risk analysis.
[0064] The interface FMEA report also includes preventive measures, detection measures, responsible person, target date, completion log, frequency, detection rate, and measure priority during the optimization process after risk analysis.
[0065] Part of the content of the interface FMEA report is as Figure 6 shown.
[0066] This application conducts FMEA analysis on the internal interfaces and external interfaces involved in the target product, reduces quality problems caused by interface failures, improves the FMEA analysis of the target product, and thus improves product quality.
[0067] Based on the same inventive concept, the embodiment of this application also provides an interface-based FMEA analysis system for implementing the above-mentioned interface-based FMEA analysis method. The implementation solution provided by this system to solve problems is similar to the implementation solution described in the above method. Therefore, the specific limitations in one or more embodiments of the interface-based FMEA analysis system provided below can refer to the limitations on the interface-based FMEA analysis method in the above text, and will not be repeated here.
[0068] In an exemplary embodiment, as Figure 7 shown, an interface-based FMEA analysis system is provided, including:
[0069] An interface node adding module, configured to add interface nodes under the components with connection relationships in the FMEA structure tree of the target product according to the connection relationships between the components in the target product and the connection relationships between the components and external objects; each interface node represents the connection interface between two components, or the connection interface between a component and an external object.
[0070] A failure and risk analysis module is used to add interface functions to each interface node and perform failure analysis and risk analysis on the interface functions.
[0071] A report generation module is used to generate an interface FMEA report based on the failure analysis and risk analysis of the interface functions.
[0072] An interface-based FMEA analysis system further includes a function analysis module. The function analysis module is used to perform function analysis on the interfaces added to each interface node and add the functions and / or features of the interfaces.
[0073] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0074] Specific examples are used in this article to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, based on the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.
Claims
1. An interface-based FMEA analysis method, characterized in that, The interface-based FMEA analysis method includes: According to the connection relationships among components in the target product and the connection relationships between components and external objects, add interface nodes under the components with connection relationships in the FMEA structure tree of the target product; each interface node represents the connection interface between two components, or the connection interface between a component and an external object; Add interface functions to each interface node, and perform failure analysis and risk analysis on the interface functions; Generate an interface FMEA report based on the failure analysis and risk analysis performed on the interface functions.
2. The interface-based FMEA analysis method according to claim 1, wherein Adding interface functions to each interface node and performing failure analysis and risk analysis on the interface functions specifically include: Add failure modes to the interface functions, as well as the corresponding failure consequences and failure causes of the failure modes; the failure modes added to the interface functions include the failure modes of the components corresponding to the interface nodes, the failure consequences are the failure modes of the superior nodes of the component nodes to which the interface nodes belong, and the failure causes are the failure modes of the inferior nodes of the component nodes to which the interface nodes belong; Add measures to the failure modes, and calculate the measure priority based on the severity of the failure consequences, the frequency of occurrence of the failure causes, and the detectability after adding the measures.
3. The interface-based FMEA analysis method according to claim 2, wherein After adding interface functions to each interface node and performing failure analysis and risk analysis on the interface functions, the interface-based FMEA analysis method further includes: If the measure priority is higher than the set priority, optimize the interface functions by adding optimization measures.
4. The interface-based FMEA analysis method according to claim 2, characterized in that The failure modes added to the interface functions also include the failure modes in the failure library and the custom-added failure models.
5. The interface-based FMEA analysis method according to claim 3, wherein The measures added to the failure modes include preventive measures and detection measures.
6. The interface-based FMEA analysis method according to claim 2, characterized in that If there are multiple failure consequences corresponding to a failure mode, the severity used for calculating the measure priority is the maximum value among the severities corresponding to the failure consequences.
7. The interface-based FMEA analysis method according to claim 1, wherein Before adding interface nodes under the components with connection relationships in the FMEA structure tree of the target product according to the connection relationships among components in the target product and the connection relationships between components and external objects, the interface-based FMEA analysis method further includes: In the structure block diagram of the target product, create connection relationships by connecting two components.
8. The interface-based FMEA analysis method according to claim 1, wherein Add interface characteristics while adding interface functions to each interface node.
9. The interface-based FMEA analysis method according to claim 5, wherein The interface FMEA report includes: interface name, superior component, inferior component, interface function, function of the superior component, function of the inferior component, failure consequence, failure mode, failure cause, preventive measure, detection measure, and measure priority.
10. An interface-based FMEA analysis system, characterized in that, The interface-based FMEA analysis system includes: An interface node addition module, configured to add interface nodes under the components with connection relationships in the FMEA structure tree of the target product according to the connection relationships among components in the target product and the connection relationships between components and external objects; each interface node represents the connection interface between two components, or the connection interface between a component and an external object; A failure and risk analysis module, configured to add interface functions to each interface node and perform failure analysis and risk analysis on the interface functions; A report generation module, which is used to generate an interface FMEA report based on the failure analysis and risk analysis of the interface functions.