Aircraft wire harness digitization and automation collaborative design simulation method based on Capal and CATIA

Abstract

The invention belongs to an aircraft wire harness design technology, and relates to a digital and automatic collaborative design simulation method for aircraft wire harnesses based on Capal and CATIA. According to the method, an existing boundary data model is utilized, electrical parts are installed on CATIA software, and wiring harness arrangement environment conditions are created; creating a three-dimensional wire harness model in the CATIA software; establishing a Capal graphic symbol library and a wire harness part library; creating an aircraft electrical wiring diagram on the Capital software by using the graphic symbol library and the wiring harness part library file; in combination with a CATIA three-dimensional wiring harness model, interactive design is carried out with flight Capital software, and an aircraft two-dimensional topological graph is formed; the sectional area of the wire harness is automatically calculated through CATIA software, and an aircraft simulation three-dimensional wire harness is formed; and combining the aircraft simulation three-dimensional wiring harness with the aircraft topological graph and the aircraft wiring harness two-dimensional graph design to form an aircraft two-dimensional wiring harness chart diagram. According to the invention, database management informatization, three-dimensional wiring harness design digitalization, two-dimensional electrical system principle design and three-dimensional electrical wiring harness model interaction design automation are realized.

Description

Technical Field

[0001] The invention belongs to aircraft wiring harness design technology, and relates to a digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA. Background Art

[0002] With the current demand for aircraft development, the number and scale of onboard electrical equipment have increased dramatically, the design of electrical systems has become more and more complex, and the parallel development of multiple models has gradually increased the requirements for development cycles, nodes, and costs. This development trend requires us to urgently improve existing design methods, form a digital and automated collaborative design method for the aircraft electrical wiring interconnection system (EWIS), and establish an aircraft electrical design platform based on informatization, digitization, and automation to meet the development needs of new models and reduce labor costs. The current EWIS design is restricted by many factors such as the traditional working mode of the industry, software and hardware limitations, and there are still data isolation problems in the two-dimensional electrical principle design and three-dimensional electrical wiring harness model design, design and simulation levels, which limits the design efficiency and quality. Summary of the invention

[0003] The purpose of the present invention is to propose a collaborative design simulation method for digital and automated aircraft harnesses based on Capital and CATIA, so that designers can parameterize and manage design data information, and interactively design through two-dimensional electrical principle design and three-dimensional electrical harness models, thereby systematically planning the digital and automated design process of aircraft harnesses.

[0004] The technical solution of the present invention is: a digital and automated collaborative design simulation method for aircraft wiring harnesses based on Capital and CATIA, comprising the following steps:

[0005] Step 1: Classify and manage the 3D data of wiring harness parts in CATIA software, and establish an electrical component library and model structure tree;

[0006] Step 2: Use the existing boundary data model to install electrical components in CATIA software and create wiring harness layout environment conditions;

[0007] Step 3: Create a 3D wire harness model in CATIA software;

[0008] Step 4: Use the physical parameters and electrical property information of the wiring harness parts in the CATIA software to establish the Capital graphic symbol library and wiring harness parts library, input the graphic symbols, device information, and material information required for the wiring harness design, and form the aircraft symbol library, device library, and material library;

[0009] Step 5. Use the graphic symbol library and harness parts library files to create an aircraft electrical wiring diagram in Capital software;

[0010] Step 6: Combine the CATIA 3D wiring harness model with the Tongfei Capital software for interactive design to form a 2D topology diagram of the aircraft;

[0011] Step 7: Use the Capital aircraft topology diagram to automatically calculate the cross-sectional area of ​​the harness in CATIA software to form a simulated three-dimensional harness for the aircraft after the wire routing;

[0012] Step 8. Combine the aircraft simulation 3D wiring harness after CATIA wire routing with the aircraft topology diagram in Capital software, design the aircraft wiring harness 2D diagram, form the aircraft 2D wiring harness diagram, and output the wire loop summary table and bill of materials.

[0013] The input of the electrical component library in step 1 includes: aircraft design requirements and aircraft process requirements.

[0014] The output of the electrical component library in step 1 includes: electrical properties and physical information of components.

[0015] The environmental conditions for wiring harness arrangement in step 2 are as follows: according to the actual situation of the cable channel on the machine: high temperature environment requires the selection of high temperature resistant protective materials; high humidity environment requires the use of waterproof and moisture-proof sealing design for the wire harness; strong electromagnetic interference environment requires the use of shielded wires, and the anti-interference treatment of the cables must be specially performed; vibration environment requires the use of fixed clips to fix the wire harness at a fixed point.

[0016] The step 3 is specifically as follows: creating a geometric harness node in CATIA software, and creating a multi-branch harness node under the geometric harness node, drawing harness branches according to the positions of the already placed equipment, connectors, tail accessories, and clamps, to form a physical harness topology for the entire machine.

[0017] The step 4 is specifically as follows: using the physical parameters and electrical property information of the wiring harness components in the CATIA software to establish the Capital graphic symbol library and the wiring harness parts library, performing two-dimensional drawing according to the physical shape of the parts in CATIA, importing the generated graphics into Capital to establish the graphic symbol library, and adding pin properties according to the actual situation to improve the symbol library.

[0018] The step 5 is specifically as follows: according to the equipment, connectors and electrical interface definition information already placed in the CATIA software, in the Capital software, a design drawing is created according to the system; in the corresponding design, equipment, connectors, separation surfaces, terminals, grounding and other parts are drawn, and they are connected through wires and cables to form an electrical wiring diagram.

[0019] The step 6 is specifically as follows: import the CATIA 3D wire harness into the Capital software through the Capital import interface, generate a 2D topology diagram of the aircraft, associate the 2D topology with the 2D wiring, ensure that the wires find the correct wiring path, and ensure the consistency between the 2D wiring diagram and the 3D wire harness model.

[0020] The step 7 is specifically as follows: establishing an electrical harness node in the CATIA software, and importing the part information, wiring relationship, and wire cross-section information in Capital into the CATIA software, correspondingly associating CATIA with the connectors and permanent connector parts in Capital, and automatically routing the wire information imported by Capital in the electrical harness node to ensure that the wires can find routes in the corresponding three-dimensional space to form a simulated three-dimensional harness for the aircraft after the wire routing; and automatically calculating the cross-sectional area of ​​each harness channel based on the cross-sectional area information of the wire cables.

[0021] The step 8 is specifically as follows: through the Capital import interface, the CATIA topology model is divided according to the harness nodes, each harness is imported into the Capital harness design module, a two-dimensional diagram of the aircraft harness is generated, meshing and various harness process designs are performed on the drawing, and after the design is completed, it is automatically flattened into a two-dimensional harness board schematic diagram. The two-dimensional harness diagram and the two-dimensional harness board schematic diagram maintain design consistency, and the wire loop summary table and the bill of materials are output according to the harness or the flight through the report export function.

[0022] The advantages of the present invention are:

[0023] It makes database management information-based, 3D wiring harness design digital, 2D electrical system principle design and 3D electrical wiring harness model interactive design automated. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flowchart of digital and automated collaborative design of aircraft wiring harnesses based on Capital and CATIA.

[0025] Figure 2 It is the input and output diagram of the digital and automated design of aircraft wiring harnesses. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 As shown in the figure, the aircraft wiring harness digitalization and automated collaborative design simulation method based on Capital and CATIA includes the following steps:

[0028] Step 1: Classify and manage the 3D data of wiring harness parts in CATIA software, and establish an electrical component library and a model structure tree; the input of the electrical component library includes: aircraft design requirements and aircraft process requirements. The output of the electrical component library includes: component electrical properties and physical information.

[0029] Step 2. Use the existing boundary data model to install electrical components in CATIA software and create the wiring harness layout environment conditions; the wiring harness layout environment conditions are: based on the actual situation of the cable channel on the machine: high temperature environment requires the selection of high temperature resistant protective materials; high humidity environment requires the use of waterproof and moisture-proof sealing designs for wire harnesses (using sealants, waterproof connectors, etc.); strong electromagnetic interference environments require shielded wires, and special treatment of cable anti-interference; vibration environments require the use of appropriate fixing clips to fix the harnesses at appropriate fixing points.

[0030] Step 3: Create a 3D harness model in CATIA software; create a geometric harness node in CATIA software, and create a multi-branch harness node under the geometric harness node. Draw harness branches according to the positions of the placed equipment, connectors, tail accessories, clamps, etc. to form the physical harness topology of the whole machine.

[0031] Step 4. Use the physical parameters and electrical property information of the harness components in the CATIA software to establish the Capital graphic symbol library and harness parts library, input the graphic symbols, device information, and material information required for harness design, and form an aircraft symbol library, device library, and material library; Use the physical parameters and electrical property information of the harness components in the CATIA software to establish the Capital graphic symbol library and harness parts library, and perform two-dimensional drawing according to the physical shape of the parts in CATIA. The generated graphics can be imported into Capital to establish a graphic symbol library, and add pin attributes according to the actual situation to improve the symbol library. Establish Capital harness parts, such as: connectors, define their material, pins, matching tail accessories, wire matching, terminal matching and other information; wire cables, define their composition structure, material, color, wire gauge, cross-sectional area and other information; mesh sleeves define their material, applicable diameter, temperature, etc., and complete the definition of the harness parts library.

[0032] Step 5. Use the graphic symbol library and harness parts library files to create the aircraft electrical wiring diagram in Capital software. According to the equipment, connectors and electrical interface definition information already placed in CATIA software, create design drawings in Capital software according to the system. In the corresponding design, draw equipment, connectors, separation surfaces, terminals, grounding and other parts, and connect them through wires and cables to form an electrical wiring diagram.

[0033] Step 6. Combine the CATIA 3D wire harness model with the Capital software for interactive design to form a 2D topology diagram of the aircraft. Import the CATIA 3D wire harness into the Capital software through the Capital import interface, and generate a 2D topology diagram of the aircraft. Associate the 2D topology with the 2D wiring to ensure that the wires can find the correct wiring path and that the 2D wiring diagram is consistent with the 3D wire harness model.

[0034] Step 7. Use the Capital aircraft topology diagram to automatically calculate the wire harness cross-sectional area in CATIA software to form a simulated three-dimensional wire harness for aircraft after wire routing; establish an electrical wire harness node in CATIA software, and import the part information, wiring relationship, and wire cross-sectional information in Capital into CATIA software, associate CATIA with the connectors, permanent joints and other parts in Capital, and automatically route the wire information imported by Capital in the electrical wire harness node to ensure that the wires can find routes in the corresponding three-dimensional space to form a simulated three-dimensional wire harness for aircraft after wire routing; and automatically calculate the cross-sectional area of ​​each wire harness channel based on the cross-sectional area information of the wire cables.

[0035] Step 8. Combine the aircraft simulation 3D wiring harness after CATIA wire routing with the aircraft topology diagram in Capital software, design the aircraft wiring harness 2D diagram, form the aircraft 2D wiring harness board schematic diagram, and output the wire loop summary table and bill of materials. Through the Capital import interface, divide the CATIA topology model according to the wiring harness nodes, import each wiring harness into the Capital wiring harness design module, generate the aircraft wiring harness 2D diagram, perform meshing and various wiring harness process designs on the drawing, and automatically flatten it into a 2D wiring harness board schematic diagram after the design is completed. The 2D wiring harness diagram and the 2D wiring harness board schematic diagram maintain design consistency, and output the wire loop summary table and bill of materials according to the wiring harness or by flight through the report export function.

[0036] Example

[0037] The input and output diagrams of the aircraft wiring harness digitalization and automation design in this example are shown in Figure 2 .

[0038] The input of the electrical component library 4 includes: aircraft design requirements 2 and aircraft process requirements 3 .

[0039] The output of the electrical component library 4 includes: electrical properties and physical parameters 6 of components.

[0040] This example adopts a CATIA software 1 to design the aircraft three-dimensional electrical wiring harness 8, uses the electrical component library 4, combines with the aircraft boundary data model 5, establishes the wiring harness layout environment conditions 7, and designs the aircraft three-dimensional electrical wiring harness 8.

[0041] This example uses a Capital software 9 to establish a graphic symbol library 10 and a harness parts library 11 according to the electrical properties and physical parameters 6 of the components. The graphic symbol library 10 and the harness parts library 11 are used to form an aircraft electrical wiring diagram 12. The aircraft three-dimensional electrical harness 8 is assisted to form a two-dimensional panoramic harness design skeleton of the aircraft, and the two-dimensional topology diagram is designed in combination with the equipment layout information; a new (generated list) Buildlist is created for the aircraft electrical wiring diagram 12, and the wiring diagram is mapped to the topology diagram 13 for interactive design; the topology diagram 13 interactive design parameters are set for the electrical wiring diagram 12 related parameters.

[0042] The topology diagram 13 is imported into CATIA through CATIA and Capital interface plug-ins, and the wires are automatically routed in the CATIA software. The diameter and cross-section of the three-dimensional harness are automatically calculated according to the wire specifications and quantity of the harness segment routed through the CATIA built-in algorithm to form a three-dimensional harness 14 after wire routing.

[0043] Import the 3D harness data 14 after CATIA wire routing into Capital, and generate a 2D harness drawing 15 based on the wire information, welding point information, and harness level information synthesized in the drawing. Set the connectors, buckles, welding points, and auxiliary materials to generate a 2D aircraft harness board schematic 16. The wire loop summary table 17 and the bill of materials 18 can be displayed on the drawing through the drawing style setting.

[0044] The wiring diagram design includes selecting a style set, sharing settings, and DRC checking.

[0045] The topology design includes selecting a style set, adding a two-dimensional panoramic harness design skeleton for an aircraft, adding a slot, adding a virtual connector, adding a bundle, processing a Poke-Home Bundle, adding rules and design constraints, adding wiring constraints, wiring according to an Inline report, and confirming that the topology relationship is correct.

[0046] The two-dimensional design of the wiring harness includes selecting a style set, adding a bundle, adding wiring harness parameters, adding a connector, selecting a snap-on installation direction, adding rules and design constraints, adding welding points, setting wires, adding auxiliary materials such as heat shrink tubing, adding terminals, adding blind plugs, setting drawing styles, and design rule checking.

[0047] The interactive design parameters include planning separation surfaces, confirming separation designs, and determining separation surface connector information.

[0048] CHS topology diagram: Import CATIA 3D wiring harness into Capital 2D through the interface, generate a topology diagram, project the wiring environment, export it as a dxf file, and use it as a 2D topology background diagram in Capital software.

Claims

1. Aircraft wiring harness digitalization and automated collaborative design simulation method based on Capital and CATIA, characterized by: The following steps are involved: Step 1: Classify and manage the 3D data of wiring harness parts in CATIA software, and establish an electrical component library and model structure tree; Step 2: Use the existing boundary data model to install electrical components in CATIA software and create wiring harness layout environment conditions; Step 3: Create a 3D wire harness model in CATIA software; Step 4: Use the physical parameters and electrical property information of the wiring harness parts in the CATIA software to establish the Capital graphic symbol library and wiring harness parts library, input the graphic symbols, device information, and material information required for the wiring harness design, and form the aircraft symbol library, device library, and material library; Step 5. Use the graphic symbol library and harness parts library files to create an aircraft electrical wiring diagram in Capital software; Step 6: Combine the CATIA 3D wiring harness model with the Tongfei Capital software for interactive design to form a 2D topology diagram of the aircraft; Step 7: Use the Capital aircraft topology diagram to automatically calculate the cross-sectional area of ​​the harness in CATIA software to form a simulated three-dimensional harness for the aircraft after the wire routing; Step 8. Combine the aircraft simulation 3D wiring harness after CATIA wire routing with the aircraft topology diagram in Capital software, design the aircraft wiring harness 2D diagram, form the aircraft 2D wiring harness diagram, and output the wire loop summary table and bill of materials.

2. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The input of the electrical component library in step 1 includes: aircraft design requirements and aircraft process requirements.

3. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The output of the electrical component library in step 1 includes: electrical properties and physical information of components.

4. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The environmental conditions for wiring harness arrangement in step 2 are as follows: according to the actual situation of the cable channel on the machine: high temperature environment requires the selection of high temperature resistant protective materials; high humidity environment requires the use of waterproof and moisture-proof sealing design for the wire harness; strong electromagnetic interference environment requires the use of shielded wires, and the anti-interference treatment of the cables must be specially performed; vibration environment requires the use of fixed clips to fix the wire harness at a fixed point.

5. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The step 3 is specifically as follows: creating a geometric harness node in CATIA software, and creating a multi-branch harness node under the geometric harness node, drawing harness branches according to the positions of the already placed equipment, connectors, tail accessories, and clamps, to form a physical harness topology for the entire machine.

6. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The step 4 is specifically as follows: using the physical parameters and electrical property information of the wiring harness components in the CATIA software to establish the Capital graphic symbol library and the wiring harness parts library, performing two-dimensional drawing according to the physical shape of the parts in CATIA, importing the generated graphics into Capital to establish the graphic symbol library, and adding pin properties according to the actual situation to improve the symbol library.

7. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The step 5 is specifically as follows: according to the equipment, connectors and electrical interface definition information already placed in the CATIA software, in the Capital software, a design drawing is created according to the system; in the corresponding design, equipment, connectors, separation surfaces, terminals, grounding and other parts are drawn, and they are connected through wires and cables to form an electrical wiring diagram.

8. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The step 6 is specifically as follows: import the CATIA 3D wire harness into the Capital software through the Capital import interface, generate a 2D topology diagram of the aircraft, associate the 2D topology with the 2D wiring, ensure that the wires find the correct wiring path, and ensure the consistency between the 2D wiring diagram and the 3D wire harness model.

9. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1 is characterized in that: The step 7 is specifically as follows: establishing an electrical harness node in the CATIA software, and importing the part information, wiring relationship, and wire cross-section information in Capital into the CATIA software, correspondingly associating the connectors and permanent connector parts in CATIA with Capital, and automatically routing the wire information imported by Capital in the electrical harness node to ensure that the wires can find routes in the corresponding three-dimensional space, thereby forming a three-dimensional wire harness for aircraft simulation after the wire routing; And based on the cross-sectional area information of the wires and cables, the cross-sectional area of ​​each harness channel is automatically calculated.

10. The digital and automated collaborative design simulation method for aircraft wiring harness based on Capital and CATIA according to claim 1, characterized in that: The step 8 is specifically as follows: through the Capital import interface, the CATIA topology model is divided according to the harness nodes, each harness is imported into the Capital harness design module, a two-dimensional diagram of the aircraft harness is generated, meshing and various harness process designs are performed on the drawing, and after the design is completed, it is automatically flattened into a two-dimensional harness board schematic diagram. The two-dimensional harness diagram and the two-dimensional harness board schematic diagram maintain design consistency, and the wire loop summary table and the bill of materials are output according to the harness or the flight through the report export function.

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