Navigation atmosphere integration scheme optimization method based on digital twinning

Abstract

The invention provides a navigation atmosphere integration scheme optimization method based on digital twinning. The method comprises the following steps: S1, establishing a digital twinborn body of a part; s2, establishing a digital twinborn body of the component; s3, establishing a digital twinborn body of each module; s4, integrating the digital twin bodies of the modules obtained in the step S3 according to different requirements; s5, simulating a service space environment and a load, and building a use environment of a navigation atmosphere system; and S6, testing and evaluating a multi-integration scheme and determining an optimal integration strategy. Compared with a traditional integration mode, the navigation atmosphere integration scheme optimization method based on digital twinning has the advantages of low cost, high efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of airborne navigation atmosphere systems, and in particular to a navigation atmosphere system integration scheme optimization method based on digital twins. Background Art

[0002] The components of the navigation atmosphere system are complex, and the interactions between components will give rise to new characteristics. In addition, due to the requirements of mission execution, the navigation atmosphere system is highly dynamic, and the system status needs to be continuously updated over time. Moreover, there are many uncertainties in the system materials, structure and surrounding environment during the service life of the navigation atmosphere system.

[0003] The traditional integrated design method usually adopts "incremental design + safety margin design + periodic maintenance". If incremental integration is chosen, there are many components in the navigation atmosphere system, and the efficiency of adding module integration one by one is low; secondly, the current empirical safety factor envelope error method is often used to increase the safety margin, which will lead to a bulky system structure. This method is not only uneconomical but also difficult to fully guarantee the reliability of the system. Finally, the navigation atmosphere system uses periodic maintenance, which may cause premature system failure due to untimely maintenance, or unnecessary maintenance and inspection, resulting in high maintenance costs. Therefore, it is necessary to use digital methods to detect the system status in real time, optimize the operation, operation and targeted maintenance of the actual system online, reduce structural design redundancy, avoid too frequent periodic maintenance, and realize diagnosis, evaluation and prediction.

[0004] In addition, after the design and production of navigation atmosphere products are completed, the products need to be tested and verified. The current testing and verification has certain limitations:

[0005] The navigation atmosphere system samples must be produced before the relevant tests can be carried out. The sample production cycle is long and the cost is high. If the test results are not ideal, it needs to be redesigned and put into production. The repeated iterations of time, cost and manpower will cause great waste.

[0006] In the test of each type of equipment, the basic test method is to select fault samples to reproduce the fault on the actual system or physical prototype to determine whether the fault can be correctly detected or isolated. However, most fault mode injections are difficult and time-consuming, and the injection of individual fault modes will damage the equipment or pose safety hazards, resulting in reduced product reliability, so the test injection cost is high.

[0007] The extreme environment in which the product is put into service is difficult to fully simulate through wind tunnel tests, etc., and it is also very expensive. Summary of the invention

[0008] The purpose of the present invention is to provide a navigation atmosphere integration scheme optimization method based on digital twins, establish a digital twin of the navigation atmosphere, which is different from the unilateral simulation modeling mainly carried out in the design stage. The establishment of the digital twin of the navigation atmosphere can utilize the twin data to continuously drive the digital twin to continuously update, and build a unified platform for different modules of the system, thereby improving the authenticity of the representation of physical entities, reflecting the coupling relationship between various systems, and realizing the mirroring of the product's entire life cycle status.

[0009] Technical solution of the present invention: The present invention provides a method for optimizing a navigation atmosphere integration solution based on digital twins, which specifically includes the following steps:

[0010] S1 builds a digital twin of a part;

[0011] S2 builds the digital twin of the component;

[0012] S3 builds digital twins of each module;

[0013] S4 integrates the digital twins of each module obtained in step S3 according to different requirements;

[0014] S5 simulates the service space environment and payload, and builds the operating environment of the navigation atmosphere system;

[0015] Test and evaluate the S6 multi-integration solution and determine the optimal integration strategy.

[0016] In a possible embodiment, in the step 1, a corresponding twin is established for each part: by establishing a full-process simulation of the production process, highly fitting the production process, and using the parameters of the real-time physical entity to record the component features, the twin can reflect the tolerances, measured dimensions, machining accuracy, assembly errors, stresses lacking in ordinary production records, cutting force errors in each production process, positioning accuracy, thermal deformation of the workpiece and other related information.

[0017] In one possible embodiment, in step 2, the process flow is optimized by using digital twins. The assembly process is simulated with the help of digital twin models, and digital twins of parts are assembled. The assemblability of each part is analyzed, and the assembly process is adjusted in time. The production process of parts is optimized by using twins: the manufacturing process is improved based on the entity collected data and the massive data generated by the twin model, and the design defects are corrected in time.

[0018] In one possible embodiment, in step 3, each subsystem is designed as an independent module, and the real-time data of different modules are used to establish the twin of each module. When not participating in the integration of the whole system, the module subsystem is guaranteed to work independently and complete the main functions of the subsystem. Based on the twins of each component, the twins of the navigation module, atmosphere module, communication module, electrical module, etc. are constructed in combination.

[0019] In one possible embodiment, in step 4, the traditional integration method is serial and incremental design, which is inefficient, lacks global considerations, and relies too much on the experience of designers. Digital twin technology is used for integration, and the design method of integrated modular avionics is used more efficiently to design multiple integration schemes and corresponding virtual space twins at low cost.

[0020] In one possible embodiment, in step 5, the actual use environment of the navigation atmosphere system may face complex environments such as high altitude and polar regions. If a physical system is built for environmental testing, the cost is high and the cycle is long. By collecting the parameters of the service environment of the navigation atmosphere system: temperature, electromagnetic, air pressure, force, etc., a full-factor simulated use environment is built. By mirroring the service environment of the navigation atmosphere system and simulating different environments in which the navigation atmosphere system is in service, the parameters of the environment will be used as the input of the navigation atmosphere twin.

[0021] In one possible embodiment, in step 6, the input of the design evaluation system is to establish multiple index requirements for the navigation atmosphere system twins used in different schemes, such as function, performance, energy consumption, reliability, robustness, ease of use, safety, consistency, testability, maintainability, guarantee capability, scalability, generation design workload, cycle and cost, etc.

[0022] Construct weight vector weighted evaluation: To avoid the subjectivity of weight vector division, the weight vector can be comprehensively considered by the concerns of different experts and determined by the ordering party and the contractor. Higher weights are assigned to the factors that are of concern. Even the weight vectors of the same type of navigation atmosphere products may be different for different aircraft.

[0023] In actual operation, the only way to obtain operation data is through relevant sensor information. Therefore, during the service of the system, ground detection is in a state similar to a "black box". If PHM is carried out based on the navigation atmosphere twin, data management in the horizontal and vertical dimensions can be carried out, and then PHM and other aspects can be carried out, which has great advantages.

[0024] The advantages of the present invention may be:

[0025] 1. Design multiple integration solutions at low cost: No need to produce navigation atmosphere system samples, reducing the time and material costs of sample production. Avoid unsatisfactory results after design and production, and avoid the time, cost, and labor waste required for redesign, production, and iteration.

[0026] 2. Use digital twin models to predict bottlenecks that may be encountered in production, avoid problems in advance, and continuously improve assembly efficiency: Based on the working performance of component twin models, simulate the integration process, predict problems encountered during integration, and adjust the integration plan. In the simulated integration, continuously reduce the gap between the design of the navigation atmosphere integration system and the actual design expectations, and further improve operational reliability.

[0027] 3. The integrated system continuously self-learns, self-optimizes, adapts, and updates: Given that a wealth of intermediate variables can be recorded during the integration of twin components, an expert system is established using the database from previous product integrations, which has the ability to accurately deduce and estimate performance, and can further adjust parameter settings during integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of a navigation atmosphere integration solution optimization method based on digital twin according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific settings and methods proposed below, but covers any improvements, replacements and modifications of structures, methods, devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity in the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figure 1 As shown, a navigation atmosphere integration scheme optimization method based on digital twins is provided. According to the integration scheme of the navigation atmosphere system before optimization, the component modules and the connection modes between the modules are clarified; the component parts of each module and the connection modes between the components; the component parts of each component and the connection modes between the parts are clarified;

[0034] The specific steps include:

[0035] S1 builds a digital twin of a part;

[0036] Specifically, in the actual operation process, in the production design, a corresponding twin is established for each part: through the simulation of the entire production process, a highly fitting production process is established, and the parameters of the real-time physical entity are used to record the component characteristics. Through the twin, it is possible to reflect the tolerances, measured dimensions, machining accuracy, assembly errors, stresses that are lacking in ordinary production records, the cutting force errors borne in each production process, positioning accuracy, thermal deformation of the workpiece and other related information.

[0037] S2 builds the digital twin of the component;

[0038] In this process, digital twins are used to optimize the process flow. The assembly process is simulated with the help of digital twin models, and digital twins of parts are assembled. The assemblability of each part is analyzed, and the assembly process is adjusted in time. Use twins to optimize the production process of components: Improve the manufacturing process based on the data collected from the entity and the massive data generated by the twin model, and correct design defects in time. For example, for the physical structure, a basic model of the digital twin of the physical object is established in the SolidWorks software, including all mechanical functions, the movement path of the machine, possible equipment abnormalities and some restrictions. Make necessary modifications to the virtual model through experiments. On this basis, animation tools such as FlexSim are used to convert the physical object modeled in SolidWorks into a FlexSim simulation model to meet the requirements of real-time modeling in digital life.

[0039] S3 builds digital twins of each module.

[0040] Each subsystem is designed as an independent module, and the real-time data of different modules is used to establish the twin of each module. When not participating in the integration of the whole system, the module subsystem is guaranteed to work independently and complete the main functions of the subsystem. Based on the twins of each component, the twins of the navigation module, atmosphere module, communication module, electrical module, etc. are constructed in combination.

[0041] S4 is designed based on integrated solutions for different needs.

[0042] The traditional integration method is serial and incremental design, which is inefficient, lacks overall consideration, and relies too much on the experience of designers. Digital twin technology is used for integration, and the design method of integrated modular avionics is more efficiently utilized to design a variety of integration solutions and corresponding virtual space twins at low cost.

[0043] Based on the twins of each component, twins of navigation module, atmosphere module, communication module, electrical module, etc. are constructed. Based on the integrated solution formed by the design, the interaction in multiple fields such as mechanics, electrical, and communication within and between modules is completed.

[0044] Specifically, the modules are integrated based on different solutions. By integrating the modules in the virtual space through different solutions, a variety of digital twins in the virtual space can be formed, such as the following two:

[0045] (1) For the commonly used incremental integration scheme: Before the actual physical module integration, the module twin can be used based on the incremental integration scheme, and the digital model can be used to realize data sharing among modules.

[0046] (2) The modules can be decomposed one by one based on their functions and integrated synchronously. The integrated twin can be used to uniformly verify the mechanical, communication, electrical interface, and physical architecture of each module.

[0047] The twins are constantly debugged to ensure that the navigation atmosphere twins are fully functional and real-time. Among them, the full elements require the twins to be able to reflect the geometric model (size, shape, assembly), physical model (stress analysis, fatigue, material deformation), electrical model (circuit information), communication model (internal signal interconnection), software model (software running status), functional performance (high-fidelity reaction gyro, metering performance, etc.), etc. Real-time requires the twins to be updated dynamically, and the physical entity maintenance and upgrade twins are also updated, and the corresponding parameters of the system performance decay twins should also be updated.

[0048] During the specific model construction and adjustment process, advanced simulation platforms and simulation software can be used. For example, based on Ansys' twin builder software, a complete construction, verification and deployment of a digital twin model based on cloud or edge computing can be carried out, and combined with twin builder 3D solver and model reduction, it is used to reorganize components, realize rapid information embedding, and reduce operation cycle.

[0049] S5 simulates the service space environment and payload to build the usage environment of the integrated system.

[0050] The actual use environment of the navigation atmosphere system may face complex environments such as high altitude and polar regions. If a physical system is built for environmental testing, the cost is high and the cycle is long. By collecting the parameters of the service environment of the navigation atmosphere system: temperature, electromagnetic, air pressure, force, etc., a full-factor simulated use environment is built. By mirroring the service environment of the navigation atmosphere system and simulating different environments in which the navigation atmosphere system is in service, the parameters of the environment will be used as the input of the navigation atmosphere twin.

[0051] Test and evaluate the S6 multi-integration solution and determine the optimal integration strategy.

[0052] Input of the design evaluation system: Establish multiple index requirements for the navigation atmosphere system twin used in different schemes, such as function, performance, energy consumption, reliability, robustness, ease of use, safety, consistency, testability, maintainability, guarantee capability, scalability, generation design workload, cycle and cost.

[0053] Construct weight vector weighted evaluation: To avoid the subjectivity of weight vector division, the weight vector can be comprehensively considered by different experts and jointly determined by the ordering party and the contractor. The factors of concern are assigned higher weights. Even the weight vectors of the same type of navigation atmosphere products may be different for different aircraft. The input of the evaluation system is multiplied by the decision vector, and the optimal navigation atmosphere integration solution is inferred and decided.

Claims

1. A navigation atmosphere integration scheme optimization method based on digital twin, characterized in that: The specific steps include: S1 builds a digital twin of a part; S2 builds the digital twin of the component; S3 builds digital twins of each module; S4 integrates the digital twins of each module obtained in step S3 according to different requirements; S5 simulates the service space environment and payload, and builds the operating environment of the navigation atmosphere system; Test and evaluate the S6 multi-integration solution and determine the optimal integration strategy.

2. According to a method for optimizing a navigation atmosphere integration scheme based on digital twinning according to claim 1, it is characterized in that: In step 1, a corresponding twin is established for each part: by establishing a full-process simulation of the production process, highly fitting the production process, and using the parameters of the real-time physical entity to record the component characteristics, the twin can reflect the tolerances, measured dimensions, machining accuracy, assembly errors, stresses lacking in ordinary production records, cutting force errors in each production process, positioning accuracy, thermal deformation of the workpiece and other related information.

3. According to a method for optimizing a navigation atmosphere integration scheme based on digital twinning according to claim 1, it is characterized in that: In step 2, the digital twin is used to optimize the process flow. The assembly process is simulated with the help of the digital twin model, and the digital twin assembly of the parts is performed. The assemblability of each part is analyzed, and the assembly process is adjusted in time. The twin is used to optimize the production process of the parts: the manufacturing process is improved based on the entity collection data and the massive data generated by the twin model, and the design defects are corrected in time.

4. According to a method for optimizing a navigation atmosphere integration scheme based on digital twinning according to claim 1, it is characterized in that: In step 3, each subsystem is designed as an independent module, and the real-time data of different modules are used to establish the twin of each module. When not participating in the integration of the whole system, the module subsystem is guaranteed to work independently and complete the main functions of the subsystem. Based on the twins of each component, the twins of the navigation module, atmosphere module, communication module, electrical module, etc. are constructed in combination.

5. The method for optimizing a navigation atmosphere integration scheme based on digital twin according to claim 1, characterized in that: In step 4, the traditional integration method is serial and incremental design, which is inefficient, lacks global considerations, and relies too much on the experience of designers. Digital twin technology is used for integration, and the design method of integrated modular avionics is used more efficiently to design multiple integration solutions and corresponding virtual space twins at low cost.

6. The method for optimizing a navigation atmosphere integration scheme based on digital twin according to claim 1, characterized in that: In step 5, the actual use environment of the navigation atmosphere system may face complex environments such as high altitude and polar regions. If a physical system is built for environmental testing, the cost is high and the cycle is long. By collecting the parameters of the service environment of the navigation atmosphere system: temperature, electromagnetic, air pressure, force, etc., a full-factor simulated use environment is built. By mirroring the service environment of the navigation atmosphere system and simulating different environments in which the navigation atmosphere system is in service, the parameters of the environment will be used as the input of the navigation atmosphere twin.

7. The method for optimizing a navigation atmosphere integration scheme based on digital twin according to claim 1, characterized in that: In step 6, the input of the design evaluation system is as follows: for the twin of the navigation atmosphere system used in different schemes, multiple index requirements are established, such as function, performance, energy consumption, reliability, robustness, ease of use, safety, consistency, testability, maintainability, guarantee capability, scalability, generation design workload, cycle and cost.

8. A digital twin-based navigation atmosphere system, characterized in that: It is obtained by integrating the navigation atmosphere integration solution optimization method based on digital twin described in any one of claims 1 to 7.

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