Fuzzy comprehensive evaluation method and device for ship equipment maintenance technical file

Abstract

The invention discloses a ship equipment maintenance technology file fuzzy comprehensive evaluation method, which comprises the following steps: S1, establishing a maintenance technology file evaluation index system: establishing the evaluation index system, and recording a set of factors in the index system as U; s2, establishing an evaluation set: determining an evaluation grade set and recording the evaluation grade set as V; s3, determining the combined weight of each index: determining that each required weight is combined into a combined weight set, recording the combined weight set as A, and setting the sum of the weights as 1; s4, determining a comprehensive evaluation matrix: constructing a single-factor evaluation result of each evaluation requirement to obtain the comprehensive evaluation matrix, and recording the comprehensive evaluation matrix as R; and S5, performing fuzzy transformation to obtain an evaluation result: performing fuzzy transformation on the weight set and the comprehensive evaluation matrix to obtain a comprehensive evaluation set, recording the comprehensive evaluation set as B, and finding out a weak link. The invention further discloses a ship equipment maintenance technical file fuzzy comprehensive evaluation device. The invention provides a fuzzy comprehensive evaluation method for technical data, and the method can be widely applied to the field of ship comprehensive logistical support.

Description

Technical Field

[0001] This invention relates to the field of integrated logistics support for ships, and in particular to a fuzzy comprehensive evaluation method and apparatus for ship equipment maintenance technical documents. Background Technology

[0002] Maintenance technical documents are one of the key elements of integrated ship logistics support and a major component of support resources. They are essential for supporting ship maintenance activities and restoring equipment to good working order to continue fulfilling service missions. The quality, accuracy, and ability of these documents to meet the needs of the entire support activities directly affect the effectiveness of the ship support system. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a fuzzy comprehensive evaluation method and device for ship equipment maintenance technical documents. This method analyzes the problems that frequently occur in the use of ship maintenance technical documents and establishes an evaluation index system. It also provides a method for determining the weight of index combinations and finally provides a fuzzy comprehensive evaluation method for technical documents.

[0004] This invention provides a fuzzy comprehensive evaluation method for ship equipment maintenance technical documents, comprising the following steps: S1. Establishing an evaluation index system for maintenance technical documents: identifying factors affecting the quality of ship design and maintenance technical documents, establishing an evaluation index system, and denoting the set of factors in the index system as U; S2. Establishing an evaluation set: determining the evaluation level of the evaluation indicators according to the required accuracy of the evaluation; the higher the accuracy requirement, the finer the evaluation level, and denoting the set of evaluation levels as V; S3. Determining the weight of each indicator combination: determining the weight of each requirement in the evaluation process for each specific requirement in the evaluation index system. S4. Determine the comprehensive evaluation matrix: Based on the evaluation index system and the determined combined weight set, construct the single-factor evaluation results for each evaluation requirement in sequence, and use the single factors to determine the comprehensive evaluation matrix, denoted as R; S5. Perform fuzzy transformation to obtain the evaluation results: During the evaluation, the weight set obtained from each factor and the comprehensive evaluation matrix are transformed through fuzzy transformation to obtain a comprehensive evaluation set, denoted as B, where B = A●R, where ● is the fuzzy comprehensive evaluation operator; and based on the comprehensive evaluation set, identify the weak links in the maintenance technical documents.

[0005] In the above technical solution, in step S1, the factors affecting the quality of ship design and maintenance technical documents are evaluated through an evaluation index system based on three dimensions: the structure, content, and form of the technical documents. The evaluation elements for the structure of the technical documents include the rationality of the document structure (u1) and the prominence of warnings, notes, and annotations (u2). The evaluation elements for the content of the technical documents include sufficiency (u3), accuracy (u4), and comprehensibility (u5). The evaluation elements for the form of the technical documents include the standardization of terminology and abbreviations (u6) and the quality of document layout and binding (u7).

[0006] In the above technical solution, in step S2, the evaluation level of the evaluation index is determined according to the evaluation accuracy requirements and is divided into "seriously unsatisfied, somewhat unsatisfied, somewhat satisfied, basically satisfied, and completely satisfied", denoted as 1, 2, 3, 4, and 5. The higher the score, the higher the degree of satisfaction, i.e., V = {1, 2, 3, 4, 5}.

[0007] In the above technical solution, the specific process of determining the weight of each requirement in the evaluation process and forming a combined weight set in step S3 is to combine and assign weights determined by the experience and knowledge of multiple experts based on the evaluation of expert experience and knowledge, using a normalization assignment method or a weighted combination method.

[0008] In the above technical solution, the specific process of determining the comprehensive evaluation matrix using a single factor in step S4 is as follows: According to the evaluation level determined by the centralized evaluation, a level evaluation is performed on each element in the indicator system. The evaluation result of the i-th expert is denoted as ri = {ri1, ri2, ri3, ri4, ri5, ri6, ri7}. The evaluation results of each expert form each row of the evaluation matrix. Finally, the evaluation results of a total of m experts form a comprehensive evaluation matrix R from U to V, with the specific formula as follows: .

[0009] In the above technical solution, the specific process of obtaining a comprehensive evaluation set by fuzzy transformation of the weight set obtained from each factor and the comprehensive evaluation matrix in step S5 is as follows: In the evaluation process of maintenance technical documents, the Zdeh operator is used to transform the comprehensive evaluation matrix R, which is called the main factor determination type. It is suitable for quickly identifying the shortcomings and weaknesses of the evaluation object. The calculation method of the comprehensive evaluation set B is as follows: bj= (wi^rij),j=1,2,……,m, where wi is the weight of the i-th evaluation element, m is the total number of evaluation experts, and n is the number of evaluation elements.

[0010] The above technical solution also includes step S6, post-evaluation improvement verification: verifying the improved maintenance technical documents to confirm the actual effect of the improvement.

[0011] In the above technical solution, the specific process of verifying the improved maintenance technical documents in step S6 is as follows: the improvement effect of the technical documents is evaluated by means of simulation verification or practical verification to ensure the consistency, correctness and rationality of the improved technical documents and the actual equipment.

[0012] In the above technical solution, during the verification of the improved maintenance technical documents in step S6, the practical verification is carried out simultaneously with the maintenance and repair work of the ship during the execution of the mission, or by organizing special practical verification work; the simulation verification is carried out using simulators, semi-physical simulation test benches or digital prototypes to verify work items that are not sufficiently verified in practice, or have high verification costs, or whose verification operations are dangerous or prone to personnel and equipment damage.

[0013] The present invention also provides a fuzzy comprehensive evaluation device for ship equipment maintenance technical documents, which has a computer program that can execute the fuzzy comprehensive evaluation method for ship equipment maintenance technical documents.

[0014] The fuzzy comprehensive evaluation method and apparatus for ship equipment maintenance technical documents of the present invention have the following beneficial effects: Compared with existing technical data evaluation methods, this invention can establish a multi-attribute evaluation index system based on the actual use of equipment maintenance technical documents, and proposes a fuzzy comprehensive evaluation method based on fuzzy comprehensive operators and subjective and objective weights. This can effectively support the evaluation and improvement of maintenance technical documents during the development and service phases, improve the quality of maintenance technical documents, more effectively support maintenance and support activities, and ultimately improve the integrity and availability of equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall process of the fuzzy comprehensive evaluation method for ship equipment maintenance technical documents of the present invention; Figure 2 This is a schematic diagram of the architecture of the fuzzy comprehensive evaluation device for ship equipment maintenance technical documents of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0017] Good maintenance and support are fundamental to maintaining a ship's integrity and fulfilling its mission capabilities throughout its lifespan. One of the most crucial supports connecting these activities is technical documentation. This documentation records essential information about the vessel being maintained, its structural breakdown, troubleshooting procedures, required spare parts, tools, and instruments. Complete, accurate, and applicable technical data is indispensable for ensuring the ship's usability and maintenance. Therefore, the scientific rigor, standardization, and uniformity of maintenance technical documentation must be guaranteed, and conducting technical data evaluation has become an essential process in the development of support resources.

[0018] Example 1 This invention provides a fuzzy comprehensive evaluation method for ship equipment maintenance technical documents, the analysis process and analysis tables are as follows: Figure 1 As shown, the process includes establishing a technical document evaluation index system, creating an evaluation set, determining the weights of each index combination, determining the fuzzy relation matrix, performing fuzzy transformation to obtain the evaluation results, and post-evaluation improvement verification. The specific steps are as follows: 1) Establish an evaluation index system for maintenance technical documents By analyzing surveys, conducting interviews, and brainstorming, we can identify the factors that influence the quality of ship design and maintenance technical documents. We can establish a multi-level evaluation index system by classifying the documents according to their content, format, and other elements, or we can establish an index system with each influencing factor at the same level. The set of factors in this index system is denoted as U.

[0019] 2) Establish an evaluation set Based on the required precision for the evaluation, determine the evaluation level of the evaluation indicators. The higher the precision requirement, the more detailed the evaluation level should be. The set of evaluation levels is denoted as V.

[0020] 3) Determine the weights of each indicator combination. For each specific requirement in the evaluation index system, determine the weight of each requirement in the evaluation process, forming a combined weight set, denoted as A. The sum of all weights in the combined weight set should be 1. To avoid strong subjectivity in the weights, after evaluation based on expert experience and knowledge, methods such as normalization assignment and weighted combination should be used to combine and assign weights determined by the experience and knowledge of multiple experts, making the weights more scientific and reasonable.

[0021] 4) Determine the comprehensive evaluation matrix For the evaluation index system and the determined set of combined weights, the single-factor evaluation results for each evaluation requirement are constructed in sequence, and the comprehensive evaluation matrix is ​​obtained by using the single factors, denoted as R.

[0022] 5) Perform fuzzy transformation to obtain the evaluation results. Because the hard factors of each evaluation objective are different, their importance will vary. Therefore, in order to comprehensively consider the importance of each factor to the evaluation object from multiple perspectives, a comprehensive evaluation set, denoted as B, needs to be obtained by fuzzy transformation of the weight set of each factor and the evaluation matrix. Here, B = A●R, where ● is the fuzzy comprehensive evaluation operator. The comprehensive evaluation set is analyzed to identify weaknesses in the maintenance technical documents and make improvements.

[0023] 6) Evaluation and subsequent improvement verification The improved maintenance technical documents were verified through methods such as operating procedures, personnel, instruments and tools, timing of projects, and special operations to confirm the actual effect of the improvements.

[0024] Example 2 This embodiment is basically the same as Embodiment 1, but the logical flow of the present invention is described in further detail.

[0025] The following combination Figure 1 This describes the process of using a fuzzy comprehensive evaluation method for ship equipment maintenance technical documents.

[0026] Step 1: Establish an evaluation index system for maintenance technical documents. To address the key issues and problems encountered during the use of maintenance technical documents, an evaluation index system is established from three dimensions: structure, content, and form. The evaluation elements for the structure of technical documents include the rationality of the document structure (denoted as u1) and the prominence of warnings, notes, and annotations (denoted as u2). The evaluation elements for the content of technical documents include sufficiency (denoted as u3), accuracy (denoted as u4), and comprehensibility (denoted as u5). The evaluation elements for the form of technical documents include the standardization of terminology and abbreviations (denoted as u6) and the quality of document layout and binding (denoted as u7).

[0027] Step 2, establish the evaluation set For each of the above evaluation elements, an evaluation level is given. The division of evaluation levels should be determined according to the requirements of evaluation accuracy. Generally, it can be divided into "seriously unsatisfied, somewhat unsatisfied, somewhat satisfied, basically satisfied, and completely satisfied", denoted as 1, 2, 3, 4, and 5. The higher the score, the higher the degree of satisfaction, i.e., V = {1, 2, 3, 4, 5}.

[0028] Step 3: Determine the weights of each indicator combination. In this embodiment, the multiplicative normalization assignment method is used to process and form the combined weights of each indicator. The multiplicative normalization assignment method is as follows: Let the weight set determined by the indicator system in step 1 of a certain equipment's development personnel be Aa = {a1, a2, a3, a4, a5, a6, a7}, and the weight set determined by the indicator system for a certain equipment's users be Ab = {b1, b2, b3, b4, b5, b6, b7}. A new weight set wi is formed using the following formula: , Where ai is the weight determined by the researchers for the i-th indicator, bi is the weight determined by the users for the i-th indicator, and wi is the final weight of the i-th indicator.

[0029] Step 4: Determine the comprehensive evaluation matrix For the evaluation index system and the determined set of combined weights, the single-factor evaluation results for each evaluation requirement are constructed sequentially. That is, according to the evaluation levels determined in the evaluation set, the level evaluation is carried out for each element in the index system. For example, the evaluation result of the i-th expert is denoted as ri = {ri1, ri2, ri3, ri4, ri5, ri6, ri7}. The evaluation results of each expert form each row of the evaluation matrix. Finally, the evaluation results of a total of m experts form a comprehensive evaluation matrix R from U to V. The specific formula is as follows: .

[0030] Step 5: Perform fuzzy transformation to obtain the evaluation result. In the evaluation process of maintenance technical documents, the Zdeh operator is used to transform the evaluation matrix. This operator is characterized by its clear approach, ease of use, simplicity, and emphasis on key factors, hence it is called the key factor-determining type. It is suitable for quickly identifying the weaknesses and shortcomings of the evaluation object and is applicable to practical engineering applications. The calculation method in the comprehensive evaluation set B is as follows: bj= (wi^rij),j=1,2,...,m, Where wi is the weight of the i-th evaluation element, m is the total number of evaluation experts, and n is the number of evaluation elements.

[0031] Step 6, Evaluation and Improvement Verification Improvements are made to the technical documents identified in the evaluation, and the effectiveness of the improvements is evaluated through simulation or practical verification to ensure the consistency, correctness, and rationality of the improved technical documents with the actual equipment, effectively supporting equipment maintenance activities.

[0032] - Practical verification: This can be carried out simultaneously with the maintenance and repair work of the vessel during the mission, or it can be conducted by organizing special practical verification work.

[0033] - Simulation verification: Simulation verification uses simulators, hardware-in-the-loop test benches or digital prototypes to verify work items that have insufficient practical verification, high verification costs, certain risks in verification operations or are prone to personnel and equipment damage.

[0034] Example 3 See Figure 2 The fuzzy comprehensive evaluation device for ship equipment maintenance technical documents of the present invention includes the following: Evaluation index system module: Identify the factors that affect the quality of ship design and maintenance technical documents, establish an evaluation index system, and denote the set of factors in the index system as U; Evaluation level set module: Based on the required accuracy of the evaluation, determine the evaluation level of the evaluation indicator. The higher the accuracy requirement, the more detailed the evaluation level. The set of evaluation levels is denoted as V. Weighting module for each indicator combination: For each specific requirement in the evaluation indicator system, determine the weight of each requirement in the evaluation process, form a weight combination set, denoted as A, and the sum of all weights in the weight combination set should be 1; Comprehensive evaluation matrix module: For the evaluation index system and the determined combination weight set, the single-factor evaluation results of each evaluation requirement are constructed in sequence, and the comprehensive evaluation matrix is ​​obtained by determining the single factor, denoted as R; Fuzzy Transform Module: During evaluation, the weight set obtained from each factor and the comprehensive evaluation matrix are transformed by fuzzy transformation to obtain a comprehensive evaluation set, denoted as B, where B = A●R, and ● is the fuzzy comprehensive evaluation operator; and the weak links in the maintenance technical documents are identified based on the comprehensive evaluation set. Evaluation and Improvement Verification Module: Verify the improved maintenance technical documents to confirm the actual effect of the improvements.

[0035] Based on a collection of key concerns regarding the use of ship equipment maintenance technical documents, this invention first establishes an evaluation index system for equipment maintenance technical documents from the perspectives of systematicity, comprehensiveness, and feasibility. It then proposes a method for determining the weights of the index system through combination weights, and finally proposes a fuzzy comprehensive evaluation method to evaluate maintenance technical documents based on the evaluation index system. This lays the foundation for the evaluation and improvement of maintenance technical documents during the future service phase of ships, and enables accurate assessment of technical data during the ship equipment development and service phases. It promotes the efficient and standardized development of technical data, meeting the quality assurance requirements for ship technical data.

[0036] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A fuzzy comprehensive evaluation method for ship equipment maintenance technical documents, characterized in that: Includes the following steps: S1. Establish an evaluation index system for maintenance technical documents: Identify the factors that affect the quality of ship design and maintenance technical documents, establish an evaluation index system, and denote the set of factors in the index system as U; S2. Establish the evaluation set: Based on the required accuracy of the evaluation, determine the evaluation level of the evaluation indicators. The higher the accuracy requirement, the more detailed the evaluation level. The set of evaluation levels is denoted as V. S3. Determine the weight of each indicator combination: For each specific requirement in the evaluation indicator system, determine the weight of each requirement in the evaluation process, form a combined weight set, denoted as A, and the sum of all weights in the combined weight set should be 1. S4. Determine the comprehensive evaluation matrix: Based on the evaluation index system and the determined combined weight set, construct the single-factor evaluation results for each evaluation requirement in sequence, and use the single factors to determine the comprehensive evaluation matrix, denoted as R; S5. Perform fuzzy transformation to obtain evaluation results: During the evaluation, the weight set obtained from each factor and the comprehensive evaluation matrix are transformed by fuzzy transformation to obtain a comprehensive evaluation set, denoted as B, where B = A●R, and ● is the fuzzy comprehensive evaluation operator; and based on the comprehensive evaluation set, the weak links in the maintenance technical documents are identified.

2. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 1, characterized in that: In step S1, the factors affecting the quality of ship design and maintenance technical documents are evaluated through an evaluation index system based on three dimensions: the structure, content, and form of the technical documents. The evaluation elements for the structure of the technical documents include the rationality of the document structure (u1) and the prominence of warnings, notes, and annotations (u2). The evaluation elements for the content of the technical documents include sufficiency (u3), accuracy (u4), and comprehensibility (u5). The evaluation elements for the form of the technical documents include the standardization of terminology and abbreviations (u6) and the quality of document layout and binding (u7).

3. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 2, characterized in that: In step S2, the evaluation level of the evaluation index is determined according to the evaluation accuracy requirements and is divided into "seriously unsatisfied, somewhat unsatisfied, somewhat satisfied, basically satisfied, and completely satisfied", denoted as 1, 2, 3, 4, and 5. The higher the score, the higher the degree of satisfaction, i.e., V = {1, 2, 3, 4, 5}.

4. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 3, characterized in that: In step S3, the specific process of determining the weight of each requirement in the evaluation process and forming a combined weight set is to combine and assign weights determined by the multi-source expert experience and knowledge after evaluation based on expert experience and knowledge, using a normalization assignment method or a weighted combination method.

5. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 4, characterized in that: In step S4, the specific process of determining the comprehensive evaluation matrix using a single factor is as follows: Based on the evaluation levels determined by the centralized evaluation, a level evaluation is conducted for each element in the indicator system. The evaluation result of the i-th expert is denoted as ri = {ri1, ri2, ri3, ri4, ri5, ri6, ri7}. The evaluation results of each expert form each row of the evaluation matrix. Finally, the evaluation results of a total of m experts form a comprehensive evaluation matrix R from U to V. The specific formula is as follows: 。 6. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 5, characterized in that: In step S5, the specific process of obtaining a comprehensive evaluation set by fuzzy transformation of the weight set obtained from each factor and the comprehensive evaluation matrix during the evaluation is as follows: In the evaluation process of maintenance technical documents, the Zdeh operator is used to transform the comprehensive evaluation matrix R, which is called the main factor determination type. This is suitable for quickly identifying the shortcomings and weaknesses of the evaluation object. The calculation method in the comprehensive evaluation set B is as follows: bj= (wi^rij),j=1,2,……,m, Where wi is the weight of the i-th evaluation element, m is the total number of evaluation experts, and n is the number of evaluation elements.

7. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 6, characterized in that: It also includes step S6, post-evaluation improvement verification: verifying the improved maintenance technical documents to confirm the actual effect of the improvement.

8. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 7, characterized in that: In step S6, the specific process of verifying the improved maintenance technical documents is as follows: The effectiveness of the technical document improvements is evaluated through simulation or practical verification to ensure the consistency, correctness, and rationality of the improved technical documents and the actual equipment.

9. The fuzzy comprehensive evaluation method for ship equipment maintenance technical documents according to claim 8, characterized in that: In the process of verifying the improved maintenance technical documents in step S6, practical verification is carried out simultaneously with the maintenance and repair work of the ship during the execution of its mission, or by organizing special practical verification work. Simulation verification: Using simulators, hardware-in-the-loop simulation test benches or digital prototypes to verify work items that have insufficient practical verification, high verification costs, certain risks in verification operations, or are prone to personnel and equipment damage.

10. A fuzzy comprehensive evaluation device for ship equipment maintenance technical documents, comprising a computer program, characterized in that: The computer program is capable of executing the fuzzy comprehensive evaluation method for ship equipment maintenance technical documents as described in any one of claims 1 to 9.

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