Aviation equipment environmental adaptability demand analysis method based on model

Abstract

The invention provides a model-based aviation equipment environmental adaptability demand analysis method, and the method comprises the steps: building an equipment environment information model library based on an environment profile in an equipment life period and an environmental factor influence effect, and achieving the modeling of an environmental adaptability analysis basic database; the method comprises the following steps: determining environmental profiles and environmental factor influence effects under different use scenes and use areas according to the use scenes of equipment, and establishing an environmental adaptability analysis database, namely incorporating airport environment data expected to be experienced by a helicopter into an environmental profile model; establishing an environment adaptability analysis model, and comparing and analyzing the environment data of each airport experienced in the task scene to form typical environment condition requirements of the helicopter; according to the classification of the environmental conditions, environmental condition requirements and environmental influence effects are integrated, and an environmental adaptability demand analysis form is generated and comprises design requirements and verification requirements. The environmental adaptability demand obtained by the method is more comprehensive and more accurate.

Description

Technical Field

[0001] This invention belongs to the field of aviation technology, and in particular relates to a model-based method for analyzing the environmental adaptability requirements of aviation equipment. Background Technology

[0002] In the past, the process of analyzing the environmental adaptability requirements of equipment was mainly based on the general requirements of equipment environmental engineering and the environmental testing methods of equipment laboratories, or the analysis of the environmental conditions and testing procedures of airborne equipment. The environmental adaptability requirements of helicopters derived from the environmental resistance verification requirements are actually verification conditions of the environmental adaptability requirements indicators, not true environmental adaptability requirements, and are difficult to guide the design process.

[0003] Therefore, it is necessary to conduct an environmental adaptability analysis of the equipment based on the mission scenarios in which it is used. Summary of the Invention

[0004] To address the problem that existing technologies cannot truly define environmental adaptability requirements when conducting equipment environmental adaptability requirement analysis, this invention provides a model-based method for analyzing the environmental adaptability requirements of aerospace equipment. This invention aims to organically combine the equipment MBSE model and basic environmental adaptability data to propose comprehensive environmental adaptability requirements that are highly applicable to equipment usage needs and mission scenarios, and that consider the impact of system functions and environmental factors.

[0005] The technical solution is as follows: Firstly, this paper provides a model-based method for analyzing the environmental adaptability requirements of aviation equipment. It establishes an equipment environmental information model library based on the environmental profile and environmental factor impacts throughout the equipment's lifespan, thus modeling the basic database for environmental adaptability analysis. For the equipment's usage scenarios, it determines the environmental profiles and environmental factor impacts under different usage scenarios and areas, establishing an environmental adaptability analysis database by incorporating airport environmental data expected to be experienced by the helicopter into the environmental profile model. It then establishes an environmental adaptability analysis model, comparing and analyzing the environmental data of various airports experienced in the mission scenario to form typical environmental condition requirements for the helicopter. Finally, according to the classification of environmental conditions, it comprehensively considers environmental condition requirements and environmental impacts to generate an environmental adaptability requirement analysis form, including design requirements and verification requirements.

[0006] Optionally, the environmental profile and the impact of environmental factors during the equipment's lifespan can be expressed using a Sys ML model to establish an equipment environmental information model library.

[0007] Optionally, the equipment environment information model library includes: mission scenario model information, mission scenario-based environment profile model, and environmental factor impact effect model library. The mission scenario model information is constructed using SysML language use case diagrams during equipment development. The mission scenario-based environment profile model is obtained by modeling the acquired environmental factors, environmental parameters, and values. The environmental factor impact effect model library is obtained by modeling the acquired environmental impact effect data using SysML language.

[0008] Optionally, the process of constructing an environment profile model based on the task scenario is as follows: A library of environmental factor models will be created based on the task scenario. The equipment usage scenarios are linked with the environmental factor model library to determine the environmental parameters and values ​​of each environmental factor. Based on the sysML language, environmental factors, environmental parameters and values ​​are modeled and expressed to obtain an environmental profile model of the equipment based on the mission scenario.

[0009] Optionally, when constructing the environmental factor impact effect model library, the impact of each environmental factor on each level of equipment is determined; then, environmental impact effect data is acquired, and modeled and expressed based on the sysML language to form the environmental factor impact effect model library.

[0010] Optionally, when establishing the environmental adaptability analysis database, the equipment environmental factor types are established through a module definition diagram, a value attribute is established for each environmental factor, and a real number is assigned to each value attribute; various usage scenarios that the equipment may experience are created by instantiation, and the site classifier is used to select from the environmental factor types in the previous section to assign the corresponding environmental factor value to each attribute of the usage site instance; the impact effect of each environmental factor is created through a block definition diagram, and associated with the corresponding environmental factor values ​​to form an environmental factor impact effect model library.

[0011] Optionally, when establishing an environmental adaptability analysis model, the environmental factor values ​​of the equipment in various usage scenarios are transmitted to the simulation unit through parameter diagrams. The parameter diagrams are then used to perform comparative analysis of the environmental factor values ​​at each site and to obtain the extreme conditions under each environmental factor.

[0012] Optionally, when generating the environmental adaptability requirements analysis form, environmental design requirements and environmental verification requirements are determined based on the impact and magnitude of environmental factors, forming itemized equipment environmental adaptability requirements.

[0013] The beneficial effects of this invention are at least as follows: a) The requirement analysis method of this invention is mainly driven by the equipment usage mission scenario. Compared with the traditional requirement acquisition methods that mainly rely on standards and experience, the environmental adaptability requirements obtained by the method of this invention are more comprehensive and accurate. b) This invention improves the integration of equipment environmental adaptability and functional performance design. Based on the correlation between the environmental factor and environmental effect model library and the model MBSE model library, it has a strong constraint on the environmental adaptability design of equipment, and at the same time, it proposes targeted functional requirements for environmental adaptability supplementation. c) This invention improves the efficiency of environmental adaptability work. First, it establishes its own model library for environmental adaptability. Second, it automates the capture of environmental adaptability requirements by acquiring relevant elements of environmental adaptability models and model MBSE models. Third, during product iteration and improvement, environmental adaptability requirements are automatically changed according to changes in equipment models. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the method flow of the present invention; Figure 2 This is an example diagram of the equipment mission scenario model of the present invention; Figure 3 This is an example diagram of the environmental profile model based on the task scenario of this invention; Figure 4 This is an example diagram of the environmental impact effect model library of the present invention; Figure 5 This is an example diagram showing the values ​​of environmental factors in this invention; Figure 6 Example diagrams of using the site in this invention; Figure 7 Example diagrams are selected for the classifier of this invention; Figure 8 Example diagram showing the assignment of environmental factors to the site used in this invention; Figure 9 This is an example diagram of the environmental impact effect model library of the present invention; Figure 10 This is an example diagram illustrating environmental factors for the equipment of the present invention; Figure 11 This is a flowchart of the method of the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0017] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited from each other.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] The model-based equipment environmental adaptability requirement analysis process is as follows: Figure 1 As shown, the equipment's mission scenarios, a mission scenario-based environmental profile model library, and an environmental impact effect model library are used as basic inputs. By matching typical mission scenarios of the equipment with the environmental model library and manually selecting parameters for each environmental factor, a full-lifecycle environmental profile model of the helicopter is constructed, thus linking mission scenarios with environmental factors. Based on the established environmental profile model and data from the environmental impact model library, an environmental adaptability requirement analysis of the equipment is conducted. This automatically captures mission scenario use cases, environmental factors, and environmental impact effects. Based on this, semi-manual analysis provides environmental adaptability technical requirements and verification requirements, ultimately forming a list of itemized requirements for the equipment.

[0020] See Figure 11 The method of this invention mainly includes: establishing an equipment environment information model library (including establishing a task scenario model, an environment profile model based on the task scenario, and an environmental factor influence effect model library), establishing an environmental adaptability analysis database, establishing an environmental adaptability analysis model, and generating a demand analysis form.

[0021] 1. Establish a task scenario model The mission scenario refers to the information about the service area where the equipment is used. The mission scenario model refers to the model constructed using SysML language use case diagrams during the equipment development process. Examples include... Figure 2 As shown.

[0022] 2. Establish an environment profile model based on the task scenario. Based on the collection and organization of environmental data, an environmental factor model library was established using the sysML language for model representation, as shown in Table 1. Through correlation analysis between the equipment's operational mission scenarios and the environmental factor model library, and by selecting a specific rule from the pre-set environmental factor parameter selection rules in the software, the environmental parameters and values ​​of each environmental factor were determined. Based on the determined environmental factors, parameters, and values, an environmental profile model of the equipment based on the mission scenario was constructed, as shown in Table 1. Figure 3 As shown.

[0023] Table 1 Environmental Factor Model Library

[0024] 3. Construct a library of environmental factor impact models. Based on the analysis of the impact of various environmental factors on equipment at all levels, and the collection and organization of environmental impact effect data, a modeling representation was created using the sysML language, forming an environmental impact effect model library, such as... Figure 4 As shown.

[0025] 4. Establish an environmental adaptability analysis database. The main purpose of establishing the environmental adaptability analysis database is to create the database required for the analysis model through SysML formal modeling. The established analysis database mainly includes: a) Environmental Factor Value Database The equipment environmental factor types are established through a module definition diagram. Value attributes are created for each environmental factor, and each value attribute is assigned a real number type, such as... Figure 5 As shown.

[0026] b) Environmental profile model library By instantiating and creating various usage scenarios that equipment might experience, and using the site's classifier to select from the environmental factor types in the previous section, each attribute of the site instance is assigned a corresponding environmental factor value, such as... Figure 6 , Figure 7 , Figure 8 As shown.

[0027] c) Environmental Impact Effect Model Library By defining a block diagram, the impact effects of various environmental factors are created, and their values ​​are correlated to form a library of environmental impact effect models, such as... Figure 9 As shown 5. Establish an environmental adaptability analysis model. The environmental adaptability analysis model primarily uses parametric diagrams to transfer environmental factor values ​​for various operational scenarios to the simulation unit. These diagrams are then used to compare and analyze the environmental factor values ​​at different sites, identifying extreme conditions for each environmental factor. The simulation process is completed through activity diagrams, such as... Figure 10 As shown.

[0028] 6. Generate an environmental adaptability requirements analysis form. After completing the extreme value analysis of environmental factors, the common requirements analysis form of the general table is used. The anchored row element type is the impact effect of each environmental factor, the environmental factor type is the type of environmental factor value to be compared and analyzed, and the environmental factor quantity value is the simulation comparison result. Based on the impact effect and environmental factor quantity, environmental design requirements and environmental verification requirements are proposed to form itemized equipment environmental adaptability requirements, as shown in Table 2.

[0029] Table 2 Example of an itemized equipment environmental adaptability requirements form

[0030] The key points of this invention are as follows: a) Based on sysML, customize "modules" to suit the expression of environmental elements, and build an environmental profile model library and an environmental factor influence effect model library for task scenarios.

[0031] b) Make full use of the model MBSE model: use case model, product structure model, product category model and compartment area model based on task scenarios, etc. c) Automatically acquire elements of the model MBSE model and the environmental profile model and environmental factor impact effect model of the task scenario, and combine them with relevant analysis to capture requirements.

[0032] The above description merely illustrates embodiments of the present invention and is quite specific and detailed; however, it should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Furthermore, any parts of the present invention not described in detail are conventional techniques.

Claims

1. A model-based method for analyzing the environmental adaptability requirements of aviation equipment, characterized in that, An equipment environmental information model library is established based on the environmental profile and environmental factor impact effects during the equipment's lifespan, realizing the modeling of the basic database for environmental adaptability analysis. For the equipment's usage scenarios, environmental profiles and environmental factor impact effects are determined for different usage scenarios and areas, establishing an environmental adaptability analysis database, incorporating airport environmental data expected to be experienced by the helicopter into the environmental profile model. An environmental adaptability analysis model is established to compare and analyze the environmental data of various airports experienced in the mission scenario, forming typical environmental condition requirements for the helicopter. According to the classification of environmental conditions, and considering both environmental condition requirements and environmental impact effects, an environmental adaptability requirement analysis form is generated, including design requirements and verification requirements.

2. The method according to claim 1, characterized in that, The environmental profile and the impact of environmental factors during the equipment's lifespan are expressed using Sys ML models, and an equipment environmental information model library is established.

3. The method according to claim 1, characterized in that, The equipment environment information model library includes: mission scenario model information, mission scenario-based environment profile model, and environmental factor impact effect model library. The mission scenario model information is constructed using SysML language use case diagrams during equipment development. The mission scenario-based environment profile model is obtained by modeling the acquired environmental factors, environmental parameters, and values. The environmental factor impact effect model library is obtained by modeling the acquired environmental impact effect data using SysML language.

4. The method according to claim 3, characterized in that, The process of constructing an environment profile model based on a task scenario is as follows: A library of environmental factor models will be created based on the task scenario. The equipment usage scenarios are linked with the environmental factor model library to determine the environmental parameters and values ​​of each environmental factor. Based on the sysML language, environmental factors, environmental parameters and values ​​are modeled and expressed to obtain an environmental profile model of the equipment based on the mission scenario.

5. The method according to claim 3, characterized in that, When constructing the environmental factor impact effect model library, the impact of each environmental factor on each level of equipment is determined; then, environmental impact effect data is acquired, and modeled and expressed based on the sysML language to form the environmental factor impact effect model library.

6. The method according to claim 1, characterized in that, When establishing the environmental adaptability analysis database, the equipment environmental factor types are established through a module definition diagram, a value attribute is established for each environmental factor, and a real number is assigned to each value attribute; various usage scenarios that the equipment may experience are created by instantiation, and the site classifier is used to select from the environmental factor types in the previous section to assign the corresponding environmental factor value to each attribute of the usage site instance; the impact effect of each environmental factor is created through a block definition diagram and associated with the corresponding environmental factor value to form an environmental factor impact effect model library.

7. The method according to claim 1, characterized in that, When establishing an environmental adaptability analysis model, the environmental factor values ​​of the equipment in various mission scenarios are transmitted to the simulation unit through parameter diagrams. The parameter diagrams are used to perform comparative analysis of the environmental factor values ​​at each site and obtain the extreme conditions under each environmental factor.

8. The method according to claim 1, characterized in that, When generating the environmental adaptability requirements analysis form, environmental design requirements and environmental verification requirements are determined based on the impact and magnitude of environmental factors, forming itemized equipment environmental adaptability requirements.

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