CN113722816A - Autonomous optimization design method for spacecraft cable network - Google Patents
Autonomous optimization design method for spacecraft cable network Download PDFInfo
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- CN113722816A CN113722816A CN202110859389.5A CN202110859389A CN113722816A CN 113722816 A CN113722816 A CN 113722816A CN 202110859389 A CN202110859389 A CN 202110859389A CN 113722816 A CN113722816 A CN 113722816A
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Abstract
The invention relates to a spacecraft cable network autonomous optimization design method, S1, obtaining a spacecraft three-dimensional cable preassembly model; s2, carrying out standardized setting on a wiring assembly in the spacecraft three-dimensional cable pre-assembly model; s3, extracting reference information of all wiring components of the spacecraft three-dimensional cable pre-assembly model into a cable skeleton model; s4, establishing a cable network public path based on the reference information of the wiring assembly in the cable skeleton model; s5, importing a cable connection relation table; s6, selecting an optimal path for each cable connection relation in the cable network public path by taking the branch sequence in the cable connection relation table as an index; s7, generating a solid model of each cable branch according to the result of the step S6 and the wire gauge; and S8, acquiring a cable length, weight and branch length diagram according to the cable solid model, and outputting the diagram in a standard format.
Description
Technical Field
The invention belongs to the technical field of spacecraft cable network assembly design, and provides an autonomous optimization determination method for a spacecraft cable network, which is used for the intelligent design of the trend of the three-dimensional cable network of a spacecraft and the rapid acquisition of information such as cable length.
Background
Spacecraft are typically configured with a large number of pieces of equipment, each piece of equipment having a plurality of connectors; the cables connected between the devices through the connectors are used for source transmission and information transmission, and the cables are distributed in a three-dimensional manner and are crossed to form a network, namely a cable network, because the devices are in a three-dimensional layout. During the design process of the spacecraft cable network, designers can design cable runs through the Pro/E cable modules. And a trend designer sets a cable starting point, a cable ending point, a cable passing support and the like in an interactive mode by using the cable module in the Pro/E environment according to the cable network connection relation table to finish the cable trend design. Because the spacecraft equipment is many, the cable harness is many, the cable branch is many, when using Pro/E cable module to carry out cable design, there are the following problems:
1) and the operation is complicated. Designers need to manually set a line type, a starting point, a destination point, a route point and the like, a simple cable needs more than 10 mouse operations, and the mouse operation times of a complex cable are multiplied.
2) And the automation degree is low. All operations are manually interacted through a mouse and a keyboard, cannot be automatically processed, and are low in automation degree.
3) And the intelligent degree is lower. The Pro/E cable module can not automatically select a routing path according to a starting point and a terminal point, and a designer needs to designate supports of all paths to completely determine the path of the cable; the software does not determine the reasonability of the path and cannot assist a designer in optimizing the path.
4) And the automatic checking function is lacked. If the designer sets wrong connection relation, the software still creates a cable to generate a wrong cable; to avoid human design errors, cable designers need to spend a lot of time checking the connection relationship.
5) And cable information is inconvenient to obtain. The cable length and branch length diagrams are important cable information of cable trend design and are also main basis of cable production, but the Pro/E cable module cannot rapidly provide cable information meeting requirements of designers, and the designers can acquire related information of each cable through complicated operation.
Disclosure of Invention
The technical problem solved by the invention is as follows: the method overcomes the defects of the prior art, provides an autonomous optimization design method for a spacecraft cable network, and solves the problems of complex operation, low automation degree, low intelligence degree, lack of automatic check function, inconvenience in cable information acquisition and the like in the Pro/E cable network design process.
The technical scheme of the invention is as follows: an autonomous optimization design method for a spacecraft cable network comprises the following steps:
s1, obtaining a spacecraft three-dimensional cable pre-assembly model, wherein the spacecraft three-dimensional cable pre-assembly model comprises a whole device, cabin sections and cabin plates from top to bottom, the whole device comprises a plurality of cabin sections, each cabin section comprises a cable net framework model and a plurality of cabin plates, and a plurality of wiring assemblies are distributed on each cabin plate;
s2, carrying out standardized setting on a wiring assembly in the spacecraft three-dimensional cable pre-assembly model, wherein the standardized setting comprises the type setting of the wiring assembly and the basic information setting of the wiring assembly; the wiring assembly type comprises a connector and a cable bracket; the wiring assembly basic information setting comprises the setting of a wiring assembly model starting point, a wiring assembly model finishing point and a wiring assembly model outgoing direction; the wiring assembly basic information also comprises connector unique identification for the wiring assembly of the connector type;
s3, extracting reference information of all wiring components of the spacecraft three-dimensional cable pre-assembly model into a cable skeleton model; the reference information is the spatial position and the identification of each wiring assembly on the cable network framework model and the cabin plate of the whole cabin;
s4, establishing a cable network public path based on the reference information of the wiring assembly in the cable skeleton model, wherein the public path comprises a reasonable wiring path for communicating each connector and each cable support;
s5, importing a cable connection relation table, wherein the cable connection relation table comprises cable bundle codes, cable branch codes, cable starting point connector identifiers, cable end point connector identifiers and wire gauges; each record in the cable connection relation table specifies the connection relation of one cable branch; the wire gauge comprises the diameter of a cable, the linear density, the bending radius and the color;
s6, selecting an optimal path for each cable connection relation in the cable network public path by taking the branch sequence in the cable connection relation table as an index;
s7, generating a solid model of each cable branch according to the result of the step S6 and the wire gauge;
and S8, acquiring a cable length, weight and branch length diagram according to the cable solid model, and outputting the diagram in a standard format.
Preferably, in the step S2, the plug-in unit and the cable holder are identified and distinguished by using different values of the type parameter of the wiring assembly.
Preferably, for the connector, the starting point and the end point are marked by a reference coordinate system, and the outlet direction is marked by a Z-axis of the reference coordinate system.
Preferably, for the cable support, the positions of the starting point and the ending point are marked by setting reference points; the outgoing line directions of the starting point and the end point are marked by reference axes.
Preferably, the step S6 autonomously selects an optimal path for each cable branch in the cable connection relationship table based on the a-algorithm.
Preferably, the following steps are further included between step S6 and step S7:
and acquiring the starting point information and the end point information of the cable paths of each branch in batch, automatically comparing the starting point information and the end point information in the cable connection relation table, and checking the correctness of each branch cable.
Preferably, the cable connection relation table is a table in an EXCEL format.
Compared with the prior art, the invention has the beneficial effects that:
(1) the common path of the invention replaces the single path. The basic design function of the Pro/E cable network requires that each cable is provided with a path without a common path, so that similar cable paths cannot be borrowed mutually and must be independently arranged, and a large amount of repeated work exists; the 'public path' function avoids the repeated setting of the cable path, and improves the setting efficiency and the design accuracy of the cable path.
(2) And the cable connection relation table is imported in batches instead of being input manually. The basic function of Pro/E cable network design can only set the connection relation manually, and the function of importing connection relation information in batch is not available; the autonomous optimization design system for the spacecraft cable network supports the cable connection relation to be led in batches in a table form, and the information setting efficiency and the information accuracy are greatly improved.
(3) And automatically optimizing the path to replace manual setting of the path. The Pro/E cable network design basic function strictly establishes a cable model according to paths, the quality of the cable paths depends on the experience of designers, and different designers can provide different cable designs; under the support of the A-algorithm, the spacecraft cable network autonomous optimization design method autonomously selects an optimal path to ensure that the cable path is optimal.
(4) And the single design is replaced by the batch automatic design. The basic design function of the Pro/E cable network supports single design and does not support batch automatic design; the autonomous optimization design method for the spacecraft cable network realizes the batch automatic design of cables through the public path setting, the batch import of the connection relation table and the automatic selection of the cable path, and greatly improves the design efficiency, consistency and scientificity.
(5) And automatic checking replaces manual checking. The basic design functions of the Pro/E cable design network do not support automatic checking of cable paths and connection relations, and a designer needs to check whether the cable trends are correct one by one according to a cable connection relation table, so that the time consumption and the efficiency are low; the autonomous optimization design method for the spacecraft cable network can automatically compare whether the cable trend is correct or not in batches according to the cable connection relation table, the cable path starting point identification and the cable path end point identification, and greatly improves the checking efficiency.
(6) And automatically acquiring and outputting the cable information. The basic function of Pro/E cable network design supports the length information of the cable to be displayed, but the Pro/E cable network design lacks a convenient and effective cable information output function. The autonomous optimization design method for the spacecraft cable network can output information such as cable lists, lengths, weights, starting points, end points, approach points and the like in batches; the branch length chart of the cable harness can be rapidly output, and related information can be annotated to be used as a cable production basis.
Drawings
FIG. 1 is a conventional flow of Pro/E software cable design;
FIG. 2 is a cable network autonomous optimization design flow according to an embodiment of the present invention;
FIG. 3 is a table format of a cable connection relationship according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of cable network reference information collection according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of automatic cable network path verification according to an embodiment of the present invention;
FIG. 6 is a schematic representation of a cable network three-dimensional model created by an embodiment of the present invention;
fig. 7 is a schematic diagram of cable information export created by the embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
The invention provides a three-dimensional autonomous optimization design method for a spacecraft cable network, which comprises the following steps:
and S1, acquiring a spacecraft three-dimensional cable preassembly model. The spacecraft three-dimensional cable pre-assembly model comprises a whole device, a cabin section and a cabin plate from top to bottom, the whole device comprises a plurality of cabin sections, each cabin section comprises a cable net framework model and a plurality of cabin plates, and a plurality of wiring assemblies are distributed on each cabin plate;
and S2, setting model information in a standardized mode. The method comprises the following steps of carrying out standardized setting on a wiring assembly in a spacecraft three-dimensional cable pre-assembly model, wherein the standardized setting comprises the setting of the type of the wiring assembly, the setting of basic information of the wiring assembly and the setting of a connector identifier in an equipment model; the wiring assembly type comprises a connector and a cable bracket; the wiring assembly basic information setting comprises a wiring assembly model setting starting point, a terminal point position and a wire outlet direction; the wiring assembly basic information also comprises connector unique identification for the wiring assembly of the connector type;
preferably, the plug-in and the cable holder can be identified and distinguished through different values of the type parameters.
For the equipment connector, the positions of the starting point and the end point are marked by a reference coordinate system, and the outlet direction uses the Z-axis mark of the reference coordinate system.
For the cable support, the positions of the starting point and the end point are marked by setting reference points; the outgoing line directions of the starting point and the end point are marked by reference axes.
In Pro/E software, different values of wiring assembly type parameters are adopted to carry out identification and differentiation on the plug-in unit and the cable bracket.
And S3, collecting reference information. Copying a geometric function by using Pro/E software, and extracting reference information of all wiring components of the spacecraft three-dimensional cable pre-assembly model into a cable skeleton model;
the reference information is the spatial position and the identification of each wiring assembly on the cable network framework model and the cabin plate of the whole cabin;
for the equipment connector, the reference information comprises a reference coordinate system and an identifier; for a stent, the reference information includes a reference point, a reference axis, and an identification.
S4, common path setting. And establishing a common path of the cable based on the reference information of the wiring assembly in the cable skeleton model, wherein the common path is a reasonable wiring path for communicating each connector and each cable bracket.
And S5, importing a cable connection relation table. Importing a cable connection relation table, wherein the cable connection relation table comprises cable bundle codes, cable branch codes, cable starting point connector identification, cable ending point connector identification and wire gauges; each record in the cable connection relation table specifies the connection relation of one cable branch; the wire gauge comprises the diameter, the bending radius and the color of the cable;
and S6, independently optimizing the cable path. And taking the branch sequence in the cable connection relation table as an index, based on an A-x algorithm, directly searching a plurality of feasible paths from the starting point to the end point along a common path according to the connection relation in the connection relation table, respectively accumulating and calculating the total length of each path, and determining the optimal path of the cable according to the shortest length. The A-algorithm is a direct search method for solving the shortest path in a static road network. The cable connection relation table is a table in an EXCEL format.
And S7, creating the cable model in batch. Generating cable entity models of the branches according to the result of the step S6 and the wire gauge;
and S8, exporting the cable information in batches. And automatically outputting a cable length, a cable weight and a branch length chart according to the cable entity model and each cable branch gauge in the cable connection relation table, and outputting the chart in a standard format.
Preferably, the following steps are further included between step S6 and step S7:
and comparing the cable connection relation table with the starting point information and the end point information of each cable branch in the cable path in batches, and checking whether the cable trend is correct or not. The method specifically comprises the following steps: and extracting the starting point identification and the end point identification in batch from the cable information, automatically comparing the starting point identification and the end point identification with the starting point code and the end point code of the connection relation table, and automatically judging the consistency of the starting point identification and the end point code.
The invention develops the cable network autonomous optimization design function based on Pro/E software secondary, constructs a new cable design mode, provides a cable trend intelligent algorithm, realizes the cable routing rapid design, and obviously improves the design efficiency, accuracy and scientificity.
According to the spacecraft cable network three-dimensional autonomous optimization design method, the starting point, the terminal point, the outgoing line direction and the connector identifier of the equipment connector, the starting point, the terminal point and the outgoing line direction of the cable support are obtained by the cable skeleton model through Pro/E replication geometric function; a cable network common path is formed by connecting the connector and the bracket; reading in a cable connection relation table, and obtaining cable connection relations in batches; searching an optimal path for each cable connection relation in the common path by using an A-star algorithm according to the index sequence of the connection relation table; and the batch processing function of the cable model is developed secondarily, so that the batch creation of the cable network entity model and the batch output of the cable length, the cable weight and the branch length diagram are realized. Based on the function of Pro/E secondary development, the batch and intellectualization of the cable network trend design are realized, and the accuracy, the scientificity and the design efficiency of the cable design are greatly improved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (7)
1. An autonomous optimization design method for a spacecraft cable network is characterized by comprising the following steps:
s1, obtaining a spacecraft three-dimensional cable pre-assembly model, wherein the spacecraft three-dimensional cable pre-assembly model comprises a whole device, cabin sections and cabin plates from top to bottom, the whole device comprises a plurality of cabin sections, each cabin section comprises a cable net framework model and a plurality of cabin plates, and a plurality of wiring assemblies are distributed on each cabin plate;
s2, carrying out standardized setting on a wiring assembly in the spacecraft three-dimensional cable pre-assembly model, wherein the standardized setting comprises the type setting of the wiring assembly and the basic information setting of the wiring assembly; the wiring assembly type comprises a connector and a cable bracket; the wiring assembly basic information setting comprises the setting of a wiring assembly model starting point, a wiring assembly model finishing point and a wiring assembly model outgoing direction; the wiring assembly basic information also comprises connector unique identification for the wiring assembly of the connector type;
s3, extracting reference information of all wiring components of the spacecraft three-dimensional cable pre-assembly model into a cable skeleton model; the reference information is the spatial position and the identification of each wiring assembly on the cable network framework model and the cabin plate of the whole cabin;
s4, establishing a cable network public path based on the reference information of the wiring assembly in the cable skeleton model, wherein the public path comprises a reasonable wiring path for communicating each connector and each cable support;
s5, importing a cable connection relation table, wherein the cable connection relation table comprises cable bundle codes, cable branch codes, cable starting point connector identifiers, cable end point connector identifiers and wire gauges; each record in the cable connection relation table specifies the connection relation of one cable branch; the wire gauge comprises the diameter of a cable, the linear density, the bending radius and the color;
s6, selecting an optimal path for each cable connection relation in the cable network public path by taking the branch sequence in the cable connection relation table as an index;
s7, generating a solid model of each cable branch according to the result of the step S6 and the wire gauge;
and S8, acquiring a cable length, weight and branch length diagram according to the cable solid model, and outputting the diagram in a standard format.
2. The autonomous optimization design method of the spacecraft cable network according to claim 1, wherein the step S2 is performed by using different values of the type parameters of the wiring assembly to identify and distinguish the plug-in and the cable holder.
3. The autonomous optimization design method of spacecraft cable network according to claim 1, wherein the starting and ending positions of the connector are identified by a reference coordinate system, and the outgoing direction is identified by a Z-axis of the reference coordinate system.
4. The autonomous optimization design method of the spacecraft cable network according to claim 1, wherein for the cable support, the positions of the starting point and the ending point are identified by setting reference points; the outgoing line directions of the starting point and the end point are marked by reference axes.
5. The autonomous optimization design method for spacecraft cable networks according to claim 1, wherein the step S6 autonomously selects an optimal path for each cable branch in the cable connection relationship table based on a-x algorithm.
6. The autonomous optimization design method for spacecraft cable network according to claim 1, further comprising the following steps between step S6 and step S7:
and acquiring the starting point information and the end point information of the cable paths of each branch in batch, automatically comparing the starting point information and the end point information in the cable connection relation table, and checking the correctness of each branch cable.
7. The autonomous optimization design method of spacecraft cable networks according to claim 1, characterized in that the cable connection relation table is a table in EXCEL format.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170193134A1 (en) * | 2015-12-31 | 2017-07-06 | Beijing Institute Of Technology | Method and device for automatically routing multi-branch cable |
| CN111046488A (en) * | 2019-11-25 | 2020-04-21 | 北京空间技术研制试验中心 | Three-dimensional wiring method for spacecraft cable |
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- 2021-07-28 CN CN202110859389.5A patent/CN113722816A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170193134A1 (en) * | 2015-12-31 | 2017-07-06 | Beijing Institute Of Technology | Method and device for automatically routing multi-branch cable |
| CN111046488A (en) * | 2019-11-25 | 2020-04-21 | 北京空间技术研制试验中心 | Three-dimensional wiring method for spacecraft cable |
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