A forward design method for detailed specifications of component products

Abstract

The present application provides a forward design method for detailed specifications of component products, which includes: obtaining the goals of the manufacturer and / or user needs; determining the target definition of the component according to the goals of the manufacturer and / or user needs, and the target definition of the component includes at least one of key indicator requirements, quality reliability requirements, environmental adaptability requirements, and special user requirements; conducting preliminary design according to the target definition of the component, and the preliminary design includes determining the functional performance indicators, inspection items, test stress and criterion requirements of the component; formulating a detailed specification draft of the component based on the preliminary design; determining the reliability survey data based on the detailed specification draft of the component; and determining the detailed specifications of the component product based on the reliability survey data and the target definition of the component. This solution can systematically plan and differentiate the detailed specifications of component products from the source of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of components, and in particular relates to a forward design method for detailed specifications of component products. Background Art

[0002] Component product detailed specifications are the language of communication and exchange, and are used to characterize the quality level of components. Detailed specifications are the starting point and end point of component assurance work, the carrier of research and development results, the baseline for verification, and the basis for application. Summary of the invention

[0003] The purpose of the embodiments of this specification is to provide a forward design method for detailed specifications of component products.

[0004] The embodiment of the present application is implemented in the following manner:

[0005] The present application provides a forward design method for detailed specifications of component products, the method comprising:

[0006] Obtain manufacturer goals and / or user requirements;

[0007] Determine the target definition of components according to the manufacturer's goals and / or user needs. The target definition of components includes at least one of key indicator requirements, quality reliability requirements, environmental adaptability requirements, and user special requirements;

[0008] According to the target definition of components, preliminary design is carried out, which includes determining the functional performance indicators, inspection items, test stress and judgment requirements of components;

[0009] Based on the preliminary design, draft detailed specifications for components are prepared;

[0010] Determine reliability baseline data based on detailed draft specifications of components;

[0011] Determine the detailed specifications of component products based on reliability survey data and component target definitions.

[0012] In one embodiment, determining the functional performance index of a component according to the component target definition includes:

[0013] Based on the target definition of components, select the general specifications applicable to the components, determine the basic framework of the detailed specifications, and the functional performance indicators of the components.

[0014] In one embodiment, according to the component target definition, the inspection items of the component are determined, including:

[0015] Analyze the reliability physical model of components, identify the inherent defects of components and their excitation forms, clarify the expected failure modes and underlying failure mechanisms of components under various predetermined working conditions and application environments, and determine the inspection items of components based on the three-step approach of "original state confirmation-defect stimulation-defect inspection".

[0016] In one embodiment, according to the component target definition, determining the test stress and criterion requirements of the component includes:

[0017] According to the degradation law of reliability failure model of components and combined with general specification requirements, the test stress and judgment criteria requirements of components are determined.

[0018] In one embodiment, according to the reliability survey data and the component target definition, the detailed specifications of the component product are determined, including:

[0019] Determine standard information feedback based on reliability survey data;

[0020] The standard information feedback is compared with the component target definition to form a deviation value;

[0021] Determine the detailed specifications of component products based on the deviation value.

[0022] In one embodiment, the detailed specifications of the component product are determined according to the deviation value, including:

[0023] If the deviation value is not within the preset range, the functional performance indicators, inspection items, test stress and judgment criteria requirements are adjusted according to the standard information feedback until the deviation value is within the preset range, and the detailed specifications of the component product are obtained.

[0024] In one embodiment, the standard information feedback includes product qualification rate, actual key indicators, actual quality reliability, and actual environmental adaptability parameter deviation.

[0025] In one of the embodiments, the functional performance indicators, inspection items, test stress and criterion requirements are adjusted using the 3σ principle.

[0026] It can be seen from the technical solution provided in the above embodiments of this specification that:

[0027] A detailed and standardized design plan for domestic components was constructed based on the feedback control model, which has the characteristics of clear steps and strong systematicity. It is a concept of systematic planning and differentiated design from the source of the product.

[0028] In addition, the method provided in this application solves the long-standing problem of lack of design method guidance in the field of detailed specifications of domestic components, and constructs a detailed specification design method for domestic components that can truly reflect the definition of the product and user needs, providing a complete solution for the forward design of detailed specifications of domestic components.

[0029] Furthermore, the method provided in this application constructs a design model with a logical closed loop, interaction and feedback relationship for the key elements of the detailed specification design of components, including functional performance index requirements, inspection items, test stress and criterion requirements, etc. The feedback control realizes the coordination between various elements and improves the applicability of the detailed specification of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 A flowchart of the forward design method for the detailed specifications of the component product provided for this application;

[0032] Figure 2 An implementation roadmap for the forward design method of the detailed specifications of the component products provided for this application. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0034] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0035] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present application description without departing from the scope or spirit of the present application. Other embodiments derived from the present application description will be apparent to those skilled in the art. The present application description and examples are exemplary only.

[0036] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0037] Therefore, in order to solve the above problems, it is necessary to study the forward design method of detailed specifications of component products, guide domestic electronic component manufacturers to compile detailed product specifications that truly reflect product characteristics and user needs, ensure that the verification work has a basis and the application process has guidance, and provide support for subsequent product procurement, assurance, installation, and promotion and application.

[0038] The research on detailed specification design methods of domestic electronic components mainly includes product detailed specification architecture design, product functional performance and other requirements design, product inspection item design, product test stress and criterion design, etc. At present, the detailed specification design of foreign component products extends to both product design and use, emphasizing the control of product design source and focusing on application reliability.

[0039] Norbert Wiener, an American mathematician, proposed the theory of control theory. The feedback control model is an important idea in control theory. It is based on the feedback information of the system output to adjust the system input, thereby controlling the system. It is widely used in the fields of management and engineering. This model can be used in the detailed specification design of components. Using the feedback control model, the product requirements, product definition, functional performance indicators, inspection items, test stress and criterion requirements of components are formed into a feedback loop that is connected in front and behind, first-order, and causally related, and the control feedback relationship between each element is clarified.

[0040] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0041] Reference Figure 1 , which shows a flow chart of a forward design method applicable to detailed specifications of component products provided in an embodiment of the present application.

[0042] like Figure 1 As shown, the forward design method of detailed specifications of component products can include:

[0043] S110. Obtaining manufacturer goals and / or user requirements.

[0044] Specifically, the acquired requirements of the manufacturer and / or the user for the product are used as input.

[0045] S120. Determine component target definitions based on manufacturer targets and / or user requirements, where the component target definitions include at least one of key indicator requirements, quality reliability requirements, environmental adaptability requirements, and user-specific requirements.

[0046] Component target definition is also called controller or product definition. It takes the manufacturer's goals and / or user requirements as input to determine the component target definition, including key indicator requirements, quality and reliability requirements, environmental adaptability requirements, user-specific requirements, etc. Product definition will serve as the basic direction and feedback basis for subsequent design.

[0047] S130. According to the target definition of components, determine the functional performance indicators, inspection items, test stress and judgment criteria requirements of components.

[0048] Among them, according to the definition of component products, select the general specifications applicable to this product, determine the basic framework of detailed specifications, and design the functional performance indicators of components.

[0049] Analyze the reliability physical model of this product, identify the inherent defects of the product and their forms of excitation, clarify the possible failure modes and underlying failure mechanisms of the product under various predetermined working conditions and application environments, and design the inspection items of component products with the three-step idea of ​​"original state confirmation-excitation defects-inspection defects". Consider that the excitation of defects and inspection should not interfere with each other, combine the test items, and realize the reasonable allocation of resources.

[0050] According to the degradation law of the reliability failure model of this product and combined with the general specification requirements, the test stress and judgment criteria requirements of the product are determined.

[0051] S140. Based on the preliminary design, prepare draft detailed specifications for components.

[0052] S150. Determine reliability baseline data based on detailed draft specifications of components.

[0053] Specifically, manufacturers or user units produce or use components according to the detailed draft specifications of the components to obtain reliability survey data of the components. The reliability survey data may include product screening, identification, quality consistency, application verification and user trials, etc. Exemplarily, the reliability survey data includes user trial feedback, production measured data feedback, component inspection, and verification data feedback.

[0054] S160. Determine detailed specifications of component products based on reliability survey data and component target definitions, including:

[0055] Determine standard information feedback based on reliability survey data;

[0056] The standard information feedback is compared with the component target definition to form a deviation value;

[0057] Determine the detailed specifications of component products based on the deviation value.

[0058] Among them, the detailed specifications of the component products are determined according to the deviation value, including: if the deviation value is not within the preset range, the functional performance indicators, inspection items, test stress and judgment criteria requirements are adjusted according to the standard information feedback until the deviation value is within the preset range, and the detailed specifications of the component products are obtained.

[0059] Among them, standard information feedback includes product qualification rate, actual key indicators, actual quality reliability, and actual environmental adaptability parameter deviation.

[0060] In one embodiment, the functional performance indicators, inspection items, test stresses and criterion requirements are adjusted using the 3σ principle.

[0061] Specifically, establish feedback information collection channels to collect reliability data such as product screening, identification, quality consistency, application verification and user trials.

[0062] Based on the reliability survey data, standard information feedback such as product qualification rate, actual key indicators, actual quality reliability, actual environmental adaptability parameter deviation, etc. can be calculated, and this standard information feedback can be used as the key indicator of feedback.

[0063] Compare and analyze the standard information feedback with the target definition of components, that is, feedback key indicators such as product qualification rate, actual key indicators, actual quality reliability, actual environmental adaptability parameter deviation into the product definition to form a deviation value. If the deviation value is not within the preset range, the functional performance indicators, inspection items, test stress and judgment criteria with deviations are corrected according to the 3σ principle until the product functional performance indicators, quality reliability, environmental adaptability and other characteristics reach or are close to the target definition, and then output the final component product detailed specifications.

[0064] It can be understood that in the above embodiment, the production plant goals and / or user needs obtained in S110 are used as inputs of the feedback control model, S120-S160 are the processing procedures of the feedback control model, and the detailed specifications of the component products determined in S160 are the outputs of the feedback control model.

[0065] The embodiment of the present application uses a feedback control model to construct a forward design method for detailed specifications of component products, such as Figure 2As shown in the figure, the feedback control model takes the demand of the manufacturer or user for the product as input, determines the target definition of the component (controller), determines the functional performance index requirements of the component based on the product definition (controlled object 1), designs the quality assurance inspection items (controlled object 2) based on the reliability physical model with the three-step idea of ​​"original state confirmation-excite defect-inspect defect", and further controls the test stress and criterion requirements (controlled object 3) based on the degradation law of the reliability failure physical model. Based on the reliability survey data, taking into account efficiency, cost, risk and quality, a comparative analysis is conducted with the target definition to form a deviation value, and the deviation value is used to adjust the functional performance index requirements, inspection items and test stress, and criterion requirements until the actual functional performance reaches or approaches the target definition. The feedback control model finally outputs the detailed specifications of domestic component products.

[0066] This application constructs a detailed specification design plan for domestic components based on the feedback control model. It has the characteristics of clear steps and strong systematicity. It is a concept of systematic planning and differentiated design from the source of the product.

[0067] In addition, the method provided in this application solves the long-standing problem of lack of design method guidance in the field of detailed specifications of domestic components, and constructs a detailed specification design method for domestic components that can truly reflect the definition of the product and user needs, providing a complete solution for the forward design of detailed specifications of domestic components.

[0068] Furthermore, the method provided in this application constructs a design model with a logical closed loop, interaction and feedback relationship for the key elements of the detailed specification design of components, including functional performance index requirements, inspection items, test stress and criterion requirements, etc. The feedback control realizes the coordination between various elements and improves the applicability of the detailed specification of the product.

[0069] The following takes the forward design method of the detailed specifications of the component product provided in this application as an example to design the detailed specifications of the MF3216 type small film fuse, and the steps are as follows:

[0070] 1. Product demand input

[0071] MF3216 type small film fuse is a short circuit and overcurrent protection device. When in use, the fuse is connected in series in the protected circuit. When the circuit is short-circuited or the current exceeds the specified value, the fuse element in the fuse will melt due to the heat generated by itself, thereby protecting the circuit. MF3216 type small film fuse is widely used in power supply systems, secondary branch systems in electrical devices, electronic equipment, instruments and meters, and various communication systems, as well as around components with short-circuit failure modes.

[0072] In order to ensure the safe and reliable use of fuses, users are mainly concerned about the following three aspects of MF3216 small film fuses:

[0073] Surge current resistance capability: MF3216 small film fuse belongs to the very fast-acting fuse type, and its surge current resistance capability is poor. The overload fusing time during surge current can be used to evaluate the safety of the product.

[0074] Current carrying capacity: Current carrying capacity refers to the maximum current value that the fuse can carry for a long time without being damaged under specified conditions.

[0075] Short-circuit current: When a component in a circuit is short-circuited, the short-circuit current is often very high, and the test parameters need to be evaluated and determined according to the user's usage environment.

[0076] 2. Determine product definition (determine control objectives or component target definition)

[0077] According to the goals of the manufacturer and user needs, the key indicators are as follows: Surge current resistance: at -55℃, at 267% of the rated current, the overload fuse time is a minimum of 2ms and a maximum of 5000ms; at 25℃, at 250% of the rated current, the overload fuse time is a minimum of 2ms and a maximum of 5000ms; at 125℃, at 250% of the rated current, the overload fuse time is a minimum of 2ms and a maximum of 5000ms. Current carrying capacity: 110% of the rated current at low temperature, 100% of the rated current at normal temperature, and 80% of the rated current at high temperature. Short-circuit current: For fuses with a rated current of less than or equal to 3.0A, the short-circuit current at room temperature is 300A, and for fuses with a rated current greater than 3.0A, the short-circuit current at room temperature is 50A. .

[0078] Quality reliability requirements: Strong vibrations will be generated during rocket launches and spacecraft orbit changes. The internal structure of the fuse must be firmly connected to ensure that its fusing characteristics remain stable in a vibration environment.

[0079] Environmental adaptability requirements: Aerospace film fuses should be able to withstand the extreme temperatures in space, such as extremely high temperatures under direct sunlight and extremely low temperatures in shadowed areas; they should adapt to the high vacuum environment of space, and their materials should not emit substances that affect the fusing performance in a vacuum environment.

[0080] 3. Preliminary design

[0081] 3.1 Detailed specification framework design and functional performance index design

[0082] Taking the above user needs as input and referring to the general military standard GJB5850-2006 applicable to the MF3216 type small membrane fuse, a system framework with six chapters including scope, referenced documents, requirements, quality assurance regulations, delivery preparation, instructions, as well as functional performance indicators such as the product's cold resistance, voltage drop, and maximum current breaking was designed.

[0083] 3.2 Failure mode analysis

[0084] Currently, there are two main failure modes for membrane fuses: a functional failure model caused by overstress, and a time-related degradation failure model.

[0085] (1) Functional failure model caused by overstress

[0086] Electrical stress failure model: When current passes through the fuse, the contact surface and end will be locally overheated, causing the contact oxide film to be damaged, the resistivity to increase, and thermal runaway to occur. At the same time, local overheating will also cause loose contact, generate contact arcs, and even cause the surface material of the fuse to evaporate, forming conductive materials to bridge the fuse contacts, causing short circuit failures.

[0087] Mechanical stress failure model: During normal use or fault overload, the electromagnetic force generated by the current will cause the fuse to bend and deform, which can easily lead to fatigue fracture or creep failure if it is subjected to it for a long time. In addition, mechanical stress such as external impact and vibration can also cause the fuse to deform and loosen its contact, causing local overheating and arcing, and may cause the internal structural parts of the fuse to loosen or desolder, affecting the normal switching function.

[0088] Thermal failure model: When the fuse is powered on, the loss is released in the form of heat. If the heat dissipation capacity is less than the loss, the temperature rises until thermal runaway occurs, causing the insulation material to age, carbonize, melt, and reduce insulation performance, leading to arcing or internal short circuits. In addition, when the fuse is aged or damp, the insulation performance is reduced, the leakage current increases when powered on, the heat generation increases, and the thermal runaway process is accelerated.

[0089] Environmental failure model: Harsh environments such as high temperature, high humidity, and salt spray will accelerate the aging of fuse insulation materials, reduce insulation performance, and cause leakage or arcing. Corrosive substances such as dust and corrosive gases will corrode metal parts, reduce mechanical strength and conductivity, and cause poor contact or short circuit.

[0090] (2) Time-dependent degradation failure model

[0091] Exponential distribution model: Assuming that the fuse failure rate increases at a constant rate over time, its probability density function is f(t) = λ*e (-λ*t) , where λ is the failure rate constant and t is the time.

[0092] Weibull distribution model: It can simulate various failure rate modes from early failure to wear failure, and its probability density function is: Where α is the scale parameter and β is the shape parameter.

[0093] Lognormal distribution model: Assuming that the natural logarithm of the fuse failure rate is normally distributed, its probability density function is: Where μ is the mean and σ is the standard deviation.

[0094] Bathtub curve model: describes the three-stage pattern of fuse failure rate changing over time. The failure rate is high during the early failure period, mainly due to manufacturing defects; the failure rate is constant during the useful life, reflecting normal working performance; the failure rate increases over time during the wear period, indicating that the fuse is aging.

[0095] 3.3 Inspection project design

[0096] In the quality assurance regulations, according to GJB 5850-2006, we designed the inspection items such as screening, identification, and quality consistency. According to the three failure modes that may occur in the MF3216 type small film fuse, we designed specific inspection items.

[0097] (1) Screening test items

[0098] According to the main failure modes of the product, we select detection or stimulation items for different failure modes. For various failure modes such as unqualified appearance, electrical parameter degradation, and internal excess, we design test items such as appearance inspection, temperature shock, aging, and X-ray inspection.

[0099] The order of test items is based on the three-step method of "confirmation test-provoke defects-verify defects". The pretreatment test is placed first, followed by the confirmation project, then the test to stimulate defects, and finally the test to verify defects.

[0100] 1) Inspection before packaging is a pre-processing project, a step in production process control, and the last step before capping. It is generally the first test for screening;

[0101] 2) Appearance inspection is a confirmation item, which is usually the first inspection after capping. If there are defects in appearance, they will be directly rejected to reduce the cost of subsequent tests;

[0102] 3) Cold resistance and voltage drop are also confirmation items to confirm that the electrical performance of the product is qualified;

[0103] 4) Temperature shock and aging: These are items that stimulate defects. They impose certain stresses on the product and stimulate early defects.

[0104] 5) X-ray: It is an inspection item and uses non-destructive methods to detect defects in sealed tubes;

[0105] 6) Appearance inspection: This is the final defect inspection item and the last test of screening. The appearance defects caused by the above screening tests are eliminated through visual inspection and inspection defects are inspected.

[0106] (2) Identification and inspection design

[0107] The purpose of identification test is to prove the achievable capability of the product, so the test items should include all tests, and the test stress is the largest among all test items. All groups of identification test must first undergo the test of group 1, and then the samples are divided into the following groups for separate testing.

[0108] Group 1 is the inspection items to confirm that the product is qualified, mainly the inspection of product functional performance and confirmation of product status, including weight, appearance, X-ray, electrical continuity, cold resistance, voltage drop, cold resistance, etc.

[0109] The other groups set up to apply stress first and then inspect for defects. The stress applied mainly includes mechanical stress and environmental stress.

[0110] Two of the groups mainly test the terminal strength. After the terminal strength is completed, the fuse performance is tested to detect whether the device has failed. Since the terminal strength test does not affect the solderability of the device, considering the operability and cost, solderability is placed at the end of this group.

[0111] Group 3 tests short-circuit current, group 4 tests temperature and mechanical environmental stress, and group 5 tests salt spray.

[0112] Group 6 mainly assesses moisture resistance, and thermal vacuum outgassing is only performed when new products are identified or product materials are changed, and only on materials.

[0113] 7 groups of assessment life span.

[0114] Group 8 and Group 9 are tested for thermal vacuum. They are divided into two groups because after the thermal vacuum test, half of the samples are tested for cold resistance and the other half are tested for overload fusing.

[0115] 10 groups test dielectric withstand voltage, and 11 groups test solvent resistance.

[0116] (3) Quality consistency inspection design

[0117] The purpose of quality consistency inspection is to ensure the consistency of product quality and identification status, including Group A, Group B and Group C inspections.

[0118] Among them, the A group inspection is a 100% non-destructive test. Including appearance and mechanical inspection, temperature shock, cold resistance. The voltage drop project can be omitted in the A group, because the screening has been done 100%, and repeating the A group will affect the coating and produce indentations on the surface during the period.

[0119] Group B mainly assesses test items related to process and materials, including mechanical stress combination test, terminal strength, solderability, dielectric withstand voltage, etc., which are required to be carried out batch by batch.

[0120] The C group test mainly tests the reliability related to the environment. The idea of ​​group setting can refer to the 2 to 11 group design of the appraisal test. The C group is a periodic test, and the test cycle is generally 12 months.

[0121] 3.4 Experimental stress design

[0122] According to the reliability model degradation law models such as Arrhenius model, power law model and Markov chain model applicable to GJB 5850-2006 and MF3216 small film fuses, the stress and criterion of specific test items are designed. For example, the temperature shock is carried out according to GJB360B-2009 method 107 test condition B, the welding heat resistance is carried out according to GJB360B-2009 method 208, and the impact test is carried out according to GJB360B-2009 method 213 condition F.

[0123] 4. According to the preliminary design, a draft of "Detailed Specifications for MF3216 Small Film Fuse for Aerospace Use" shall be formulated, and the manufacturer and user unit shall determine the reliability survey data according to the draft detailed specifications to carry out reliability survey tests to check whether the actual MF3216 small film fuse can meet the requirements of the detailed specifications.

[0124] 5. Correct parameter indicators and stress criteria requirements according to reliability survey data. According to the actual inspection results of the manufacturer and user units, collect the screening data, identification inspection data, quality consistency inspection data and user trial data of MF3216 small film fuses. Feed the actual survey data back to the product definition, and correct the functional performance indicators, test stress and criterion requirements with deviations according to the 3σ principle to obtain the final functional performance indicators, test stress and criterion requirements of the inspection test, and output the final "Detailed Specifications for MF3216 Small Film Fuse for Aerospace Use".

[0125] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0126] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

Claims

1. A forward design method for detailed specifications of component products, characterized in that: The method comprises: Obtain manufacturer goals and / or user requirements; Determine component target definition according to the production plant target and / or user demand, wherein the component target definition includes at least one of key indicator requirements, quality reliability requirements, environmental adaptability requirements, and user special requirements; Conducting preliminary design according to the target definition of the components, wherein the preliminary design includes determining the functional performance indicators, inspection items, test stress and criterion requirements of the components; Based on the preliminary design, prepare draft detailed specifications for components; Determine reliability baseline data based on the detailed draft specifications of the components; Determine component product detailed specifications based on the reliability survey data and the component target definition.

2. The method according to claim 1, characterized in that Determining the functional performance index of the component according to the component target definition includes: Based on the target definition of the components, select the general specifications applicable to the components, determine the basic framework of the detailed specifications, and the functional performance indicators of the components.

3. The method according to claim 1, characterized in that The step of determining the inspection items of components according to the component target definition includes: Analyze the reliability physical model of components, identify the inherent defects of components and their excitation forms, clarify the expected failure modes and underlying failure mechanisms of components under various predetermined working conditions and application environments, and determine the inspection items of components with the three-step approach of "original state confirmation-excitation defects-inspection defects".

4. The method according to claim 1, characterized in that Determining the test stress and criterion requirements of components according to the component target definition includes: According to the degradation law of reliability failure model of components and combined with general specification requirements, the test stress and judgment criteria requirements of components are determined.

5. The method according to claim 1, characterized in that: Determining detailed specifications of component products according to the reliability survey data and the component target definition includes: Determine standard information feedback based on the reliability survey data; The standard information feedback is compared with the component target definition to form a deviation value; According to the deviation value, the detailed specification of the component product is determined.

6. The method according to claim 5, characterized in that Determining the detailed specifications of the component product according to the deviation value includes: If the deviation value is not within the preset range, the functional performance index, the inspection items, the test stress and the judgment criteria are adjusted according to the standard information feedback until the deviation value is within the preset range, thereby obtaining the detailed specifications of the component product.

7. The method according to claim 5, characterized in that The standard information feedback includes product qualification rate, actual key indicators, actual quality reliability, and actual environmental adaptability parameter deviation.

8. The method according to claim 6, characterized in that The adjustment of the functional performance index, the inspection items, the test stress and the criterion requires the use of the 3σ principle.

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