CN112488409A - Intelligent satellite assembly process planning system - Google Patents
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Abstract
The invention relates to a satellite intelligent assembly process planning system, belonging to the technical field of digital manufacturing; the system comprises a knowledge management unit and an assembly process design unit; the knowledge management unit comprises a body vocabulary management module, an assembly characteristic relation management module of a satellite structure, an assembly semantic structural definition module and an assembly relation and assembly process descriptive knowledge expression module; the assembly process design unit comprises an assembly design model analysis and feature extraction module, a satellite structure assembly sequence pushing module, an assembly process knowledge pushing module, an assembly process actual measurement record definition module, an intelligent assembly process compilation module, a process approval module and a process quick response message notification module of design change; the invention can quickly and efficiently complete the design of the assembly process, shorten the design period of the assembly process and improve the design efficiency of the assembly process.
Description
Technical Field
The invention belongs to the technical field of digital manufacturing, and relates to an intelligent satellite assembly process planning system.
Background
In the modern high-technology war, the satellite core military equipment can bear more and more important national defense empowerment. The new generation of military remote sensing satellite, the new generation of military communication relay satellite, the new generation of navigation satellite and the like are developed, the performance requirements of high spatial resolution, high time resolution, high spectral resolution, high target positioning precision and the like are met, and urgent needs are brought to the development progress of the new generation of satellite.
In the process of developing the satellite, satellite assembly is the final stage and key link of the realization of the functions and the performances of satellite products, and is also the difficult point needing to be optimized urgently. Firstly, the satellite assembly period accounts for 30% -40% of the whole development period, and the pressure of the assembly task is increased along with the continuous shortening of the model development period. The labor required for assembly accounts for about 40% of the skilled labor, over 40% of the production cost is used for product assembly, and the manual labor amount of the assembly work is large. Secondly, the assembly process of the satellite model structure is complex, the quality requirement is high, and the requirement on the guidance capability of the refinement and quantification of the assembly process is higher and higher. Taking an XX satellite as an example, the satellite has great improvement and improvement in the aspects of imaging resolution, imaging precision and the like, the expansion length of two wings of an antenna reaches 56m, an antenna expansion system is very complex, the requirement on the matching performance of interface relations such as a rod piece, a hinge and the like in the expansion system is high, a plurality of links in assembly need trial assembly, accurate measurement and debugging, and finally, a plurality of tests and experiments need to be carried out on the performance, the current assembly process simulation means, manual assembly and debugging mode and the common laser tracker theodolite online measurement method can not meet the requirement,
disclosure of Invention
The technical problem solved by the invention is as follows: the intelligent satellite assembly process planning system overcomes the defects of the prior art, quickly and efficiently completes the design of an assembly process, shortens the design period of the assembly process, and improves the design efficiency of the assembly process.
The technical scheme of the invention is as follows:
the intelligent satellite assembly process planning system comprises a knowledge management unit and an assembly process design unit; the knowledge management unit comprises a body vocabulary management module, an assembly characteristic relation management module of a satellite structure, an assembly semantic structural definition module and an assembly relation and assembly process descriptive knowledge expression module; the assembly process design unit comprises an assembly design model analysis and feature extraction module, a satellite structure assembly sequence pushing module, an assembly process knowledge pushing module, an assembly process actual measurement record definition module, an intelligent assembly process compilation module, a process approval module and a process quick response message notification module of design change;
the body vocabulary management module: labeling the assembly objects and the assembly relation by using the keywords, and then associating through the noumenon vocabulary of the satellite structure assembly field to form a knowledge network of the satellite structure assembly field; sending the knowledge network to an assembly semantic structural definition module;
the satellite structure assembly characteristic relation management module comprises: managing the assembly relationship of the satellite assembly structure; sending the assembly relation to an assembly semantic structural definition module;
assembling a semantic structural definition module: receiving a knowledge network transmitted by the ontology vocabulary management module; receiving an assembly relation transmitted by an assembly characteristic relation management module of the satellite structure; defining the assembly relation according to the knowledge network; sending the defined assembly relation to an assembly relation and assembly process descriptive knowledge expression module;
an assembly relation and assembly process descriptive knowledge expression module: summarizing typical characteristics in the satellite structure according to historical data, and presetting an assembly process; receiving an assembly relation after the definition is completed, which is transmitted by an assembly semantic structural definition module; describing the content of the assembly process by combining the defined assembly relation; storing the assembly process knowledge in an assembly process knowledge base;
an assembly design model analysis and feature extraction module: identifying assembly characteristics through boundary matching of parts; and extracting assembly characteristics;
satellite structure assembly sequence push module: a mounting structure for a satellite; the content of the assembly process is called from an assembly process knowledge base; performing optimized sequence selection on the assembly sequence based on a disassembly-assembly analysis method according to the assembly process content; obtaining an assembly sequence plan of a satellite partial structure; determining the disassembly direction by using spherical geometric calculation, and pushing an intelligent planning to generate an assembly path;
an assembly process knowledge pushing module: searching the existing model in the model library from the semantic level according to the requirement of the user on the model;
the assembly process actual measurement record definition module comprises: designing according to the requirements of an assembly design model;
an intelligent assembly process compiling module: on the basis of a satellite structure assembly sequence pushing module and an assembly process knowledge pushing module, specific contents are perfected according to design requirements;
a process approval module: the assembly process is managed in a controlled manner, and is approved according to the approval process;
a process quick response message notification module of design change: the method is used for quick response of the process after task change, timely controls assembly model management and assembly process formation through change of the design model, and timely updates the assembly process.
In the above system for planning the intelligent satellite assembly process, the assembly relationship includes a high-level relationship and a basic relationship; wherein, the high-level relation is the hierarchical relation and the connection relation among the parts; the basic relationship is the position relationship and the matching relationship between the geometric features of the parts and the geometric constraints.
In the above system for planning the intelligent satellite assembly process, the assembly relationship definition includes an assembly knowledge item definition and an assembly semantic definition;
knowledge items are defined to describe the relationships between the assembled objects 2;
assembly semantics are defined to describe assembly objects, assembly actions, assembly sequences, assembly paths, assembly resources.
In the above satellite intelligent assembly process planning system, the assembly design model analysis and feature extraction module obtains the boundary of the part by using an assembly feature extraction method based on a graph.
In the above system for planning the intelligent satellite assembly process, the extracted assembly features include assembly feature semantics, geometric elements, an assembly feature coordinate system, fitting features, assembly tolerances, and assembly graphic information.
In the above system for planning the intelligent assembly process of the satellite, the sequence generation period is shortened by 40%, the generation period of the description content of the assembly process and the supporting information is shortened by 30%, the design period of the assembly process is shortened by 30%, and the success rate of one-time assembly of the satellite reaches 90%.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method comprises the steps of constructing a corresponding assembly product structure through a design task, extracting a characteristic relation in a model according to an assembly model, pushing an assembly sequence similar to the assembly relation by taking the characteristic relation as input, and then retrieving process knowledge of assembly semantic similarity to obtain assembly process description contents;
(2) according to the invention, on the basis of the process completion design, the process approval is controlled, if a problem exists in the approval process, the process can be directly returned to the compiling for modification, and then the process is restarted;
(3) after the invention is controlled and the design task is changed, the system can automatically inform the process builder of the information to perfect the process.
Drawings
FIG. 1 is a flow chart of the intelligent satellite assembly process planning of the present invention.
Detailed Description
The invention is further illustrated by the following examples.
The invention provides a satellite-oriented intelligent assembly process planning system and a satellite-oriented intelligent assembly process planning method, which adopt an assembly sequence intelligent generation technology based on assembly knowledge reasoning to obtain primary assembly process information such as a primary disassembly-assembly sequence, assembly technical requirements and the like of a product, directly select a record table from a quality record template library to insert a process according to the product quality requirement, record quality data, quickly and efficiently complete the design of an assembly process, shorten the design period of the assembly process and improve the design efficiency of the assembly process.
The intelligent satellite assembly process planning system comprises a knowledge management unit and an assembly process design unit; the knowledge management unit comprises a body vocabulary management module, an assembly characteristic relation management module of a satellite structure, an assembly semantic structural definition module and an assembly relation and assembly process descriptive knowledge expression module; the assembly process design unit comprises an assembly design model analysis and feature extraction module, a satellite structure assembly sequence pushing module, an assembly process knowledge pushing module, an assembly process actual measurement record definition module, an intelligent assembly process compilation module, a process approval module and a process quick response message notification module of design change;
the body vocabulary management module: labeling the assembly objects and the assembly relation by using the keywords, and then associating through the noumenon vocabulary of the satellite structure assembly field to form a knowledge network of the satellite structure assembly field; sending the knowledge network to an assembly semantic structural definition module; the assembly relationship comprises a high-level relationship and a basic relationship; wherein, the high-level relation is the hierarchical relation and the connection relation among the parts; the basic relationship is the position relationship and the matching relationship between the geometric features of the parts and the geometric constraints.
The satellite structure assembly characteristic relation management module comprises: managing the assembly relationship of the satellite assembly structure; sending the assembly relation to an assembly semantic structural definition module;
assembling a semantic structural definition module: receiving a knowledge network transmitted by the ontology vocabulary management module; receiving an assembly relation transmitted by an assembly characteristic relation management module of the satellite structure; defining the assembly relation according to the knowledge network; sending the defined assembly relation to an assembly relation and assembly process descriptive knowledge expression module; the assembly relation definition comprises an assembly knowledge item definition and an assembly semantic definition;
knowledge items are defined to describe the relationships between the assembled objects 2;
assembly semantics are defined to describe assembly objects, assembly actions, assembly sequences, assembly paths, assembly resources.
An assembly relation and assembly process descriptive knowledge expression module: summarizing typical characteristics in the satellite structure according to historical data, and presetting an assembly process; receiving an assembly relation after the definition is completed, which is transmitted by an assembly semantic structural definition module; describing the content of the assembly process by combining the defined assembly relation; storing the assembly process knowledge in an assembly process knowledge base;
an assembly design model analysis and feature extraction module: identifying assembly characteristics through boundary matching of parts; and extracting assembly characteristics; and the assembly design model analysis and feature extraction module acquires the boundary of the part by adopting a figure-based assembly feature extraction method. The extracted assembly features include assembly feature semantics, geometric elements, an assembly feature coordinate system, fit features, assembly tolerances, and assembly graphic information.
Satellite structure assembly sequence push module: a mounting structure for a satellite; the content of the assembly process is called from an assembly process knowledge base; performing optimized sequence selection on the assembly sequence based on a disassembly-assembly analysis method according to the assembly process content; obtaining an assembly sequence plan of a satellite partial structure; determining the disassembly direction by using spherical geometric calculation, and pushing an intelligent planning to generate an assembly path;
an assembly process knowledge pushing module: searching the existing model in the model library from the semantic level according to the requirement of the user on the model;
the assembly process actual measurement record definition module comprises: designing according to the requirements of an assembly design model;
an intelligent assembly process compiling module: on the basis of a satellite structure assembly sequence pushing module and an assembly process knowledge pushing module, specific contents are perfected according to design requirements;
a process approval module: the assembly process is managed in a controlled manner, and is approved according to the approval process;
a process quick response message notification module of design change: the method is used for quick response of the process after task change, timely controls assembly model management and assembly process formation through change of the design model, and timely updates the assembly process.
According to the assembly process planning system designed by the invention, the sequence generation period is shortened by 40%, the assembly process description content and supporting information generation period is shortened by 30%, the assembly process design period is shortened by 30%, and the once assembly success rate of the satellite reaches 90%.
The method for planning the intelligent satellite assembly process, as shown in fig. 1, comprises the following steps:
step 1: aiming at the task requirement of a spacecraft model, receiving a load cabin with a model XX, and establishing a PBOM node GFJ-3_1-0_ DESING/A-load cabin assembled with a product in a system, wherein GFJ-3_1-0_ DESING is a product code, A is a node version and the load cabin is a Chinese name;
step 2: according to the assembled product structure obtained in the step 1, the GFJ-3_1-0_ DESING/A-load cabin comprises a bearing cylinder, a top plate, a bottom plate, a partition plate and an outer plate. An assembly process is established at an assembly product node, the system extracts the characteristics of an assembly model in the establishment process, and corresponding assembly paths are automatically pushed through comparison of the assembly characteristics; the assembly relationship is shown in table 1:
TABLE 1
| Serial number | Type of assembly relationship | Name of assembly relationship | Noumenon vocabulary |
| 1 | Belong to a relationship | Structural panel | Load cabin |
| 2 | Containing relationships | Service cabin | Structural panel |
| 3 | Coaxial relation | -Y-X vertical partition | + Y + X vertical partition board |
| 4 | Coaxial relation | + Y-X vertical partition board | -Y + X vertical partition |
| 5 | Vertical relationship | + Y-X vertical partition board | + Y-X diaphragm plate |
| 6 | Corner strip connection | + Y-X diaphragm plate | -Y-X diaphragm |
| 7 | Distance relationship | + Y-X diaphragm plate | -X-direction base plate |
The overall process consists of the product code ZGY/version-product Chinese name + overall process.
The structure of the process number consists of a model, a process type, a pipeline code/version and a process Chinese name; the version is composed of ascending letters A to Z to control the version, Chinese name, product code number and product Chinese name.
Generated in the process of GFJ-3_1-0_ DESING/A-load cabin process creation
And simultaneously creates the corresponding overall process, GFJ-3_1-0_ DESING.ZGY/A-load compartment and process XX.2030.000005/A-GFJ-3_1-0_ DESING/A-load compartment.
And step 3: and (3) matching the assembling process content according to the assembling path obtained in the step (2) to obtain process description content. For example, aiming at the connection relation of the angle bars, in the load cabin assembly structure, a structural plate connected with the bearing cylinder through the angle bars is identified, operation is carried out according to an assembly sequence and a path of intelligent planning, and the specific content comprises the following steps:
and the first line of the clamping procedure is to find the structural plate which is connected with the bearing cylinder through the angle bar, and the assembly of the structural plate is sequentially executed according to the assembly sequence result. And in the second line of the clamping procedure, the path direction of the mounting structure plate is also executed according to the path planning result of the assembly sequence. And the third line of the clamp procedure is executed according to the retrieval result that the bearing cylinder and the partition plate are in a fit relation, and the process view drawn by a reference technician is required. And in the fourth line of the clamping procedure, the retrieval result of the angle bar connection between the structural plates is executed, and the process view drawn by a reference technician is required.
Acquiring the knowledge content of the 'clamp' assembly process: assembling objects of partition boards, a partition board 1, a partition board 2 and a partition board 3; assembling from the path or the direction of the bearing cylinder; connecting the partition plate pair object and the bearing cylinder object in a fit relation through a screw according to the XX view; and installing the assembly action of the resource class assembly object according to the XX view.
And 4, step 4: and 3, obtaining the basic framework of the intelligent assembly process and the description of the content thereof, and selecting an actual measurement record table related in the assembly process from the quality record library.
And selecting a corresponding record table from the quality record library on a process content description interface according to the quality detection requirement, and perfecting the detection requirement, including the contents of detection items, design indexes and the like.
And 5: on the basis of the step 4, the craftsman perfects the technological parameters and contents to ensure the completeness of the whole technological description.
The corresponding 'pliers' assembly process is complete in content: loading the load compartment with a + X-direction clapboard, a-X-direction clapboard and a Y-direction clapboard; put in from above the bearing cylinder; connecting the-X-direction clapboard with the lower frame surface of the bearing cylinder by a screw according to the A-A view; the connection angle bars are installed according to the C-C view to connect the partition boards with each other.
Step 6: and (5) the process approval module (8) controls the approval of the process according to the result of the step (5) and controls the version of the assembly process.
For example: after the assembly process XX.2030.000005/A-GFJ-3_1-0_ DESING/A load cabin is compiled, the assembly process is submitted to a process approval process, and after the assembly process is controlled, the process version is not allowed to carry out any operation any more, and only preview is allowed. When the process is modified due to the programming problem, the process needs to be upgraded through process modification, the assembly process version is upgraded to the B version, the process node is XX.2030.000005/B-GFJ-3-1-0 _ DESING/A load chamber, and the process can be modified randomly. After the content is completed, the process approval process needs to be submitted again for control and then released.
And 7: and (3) a process quick response message notification module (9) of design change sends a design change notification to the load compartment builder according to the product node process assembly process XX.2030.000005/A-GFJ-3_1-0_ DESING/A due to the design change of the load compartment under the design XXT model according to the result of the step 6. When a process builder receives design change information through message notification, the total process of the process builder needs to be upgraded, the total process upgrade of the GFJ-3_1-0_ DESING.ZGY/A-load compartment is the total process upgrade of the GFJ-3_1-0_ DESING.ZGY/B-load compartment, and the node is automatically associated with the latest version of the product node GFJ-3_1-0_ DESING/B-load compartment. If the process content needs to be perfected, the content needs to be perfected when the process upgrading of the pipeline welding process XX.2030.000005/A-GFJ-3_1-0_ DESING/A is XX.2030.000005/B-GFJ-3_1-0_ DESING/A. If the process content is not changed, the additional design model is changed into the latest version.
Claims (6)
1. The intelligent satellite assembly process planning system is characterized in that: the system comprises a knowledge management unit and an assembly process design unit; the knowledge management unit comprises a body vocabulary management module, an assembly characteristic relation management module of a satellite structure, an assembly semantic structural definition module and an assembly relation and assembly process descriptive knowledge expression module; the assembly process design unit comprises an assembly design model analysis and feature extraction module, a satellite structure assembly sequence pushing module, an assembly process knowledge pushing module, an assembly process actual measurement record definition module, an intelligent assembly process compilation module, a process approval module and a process quick response message notification module of design change;
the body vocabulary management module: labeling the assembly objects and the assembly relation by using the keywords, and then associating through the noumenon vocabulary of the satellite structure assembly field to form a knowledge network of the satellite structure assembly field; sending the knowledge network to an assembly semantic structural definition module;
the satellite structure assembly characteristic relation management module comprises: managing the assembly relationship of the satellite assembly structure; sending the assembly relation to an assembly semantic structural definition module;
assembling a semantic structural definition module: receiving a knowledge network transmitted by the ontology vocabulary management module; receiving an assembly relation transmitted by an assembly characteristic relation management module of the satellite structure; defining the assembly relation according to the knowledge network; sending the defined assembly relation to an assembly relation and assembly process descriptive knowledge expression module;
an assembly relation and assembly process descriptive knowledge expression module: summarizing typical characteristics in the satellite structure according to historical data, and presetting an assembly process; receiving an assembly relation after the definition is completed, which is transmitted by an assembly semantic structural definition module; describing the content of the assembly process by combining the defined assembly relation; storing the assembly process knowledge in an assembly process knowledge base;
an assembly design model analysis and feature extraction module: identifying assembly characteristics through boundary matching of parts; and extracting assembly characteristics;
satellite structure assembly sequence push module: a mounting structure for a satellite; the content of the assembly process is called from an assembly process knowledge base; performing optimized sequence selection on the assembly sequence based on a disassembly-assembly analysis method according to the assembly process content; obtaining an assembly sequence plan of a satellite partial structure; determining the disassembly direction by using spherical geometric calculation, and pushing an intelligent planning to generate an assembly path;
an assembly process knowledge pushing module: searching the existing model in the model library from the semantic level according to the requirement of the user on the model;
the assembly process actual measurement record definition module comprises: designing according to the requirements of an assembly design model;
an intelligent assembly process compiling module: on the basis of a satellite structure assembly sequence pushing module and an assembly process knowledge pushing module, specific contents are perfected according to design requirements;
a process approval module: the assembly process is managed in a controlled manner, and is approved according to the approval process;
a process quick response message notification module of design change: the method is used for quick response of the process after task change, timely controls assembly model management and assembly process formation through change of the design model, and timely updates the assembly process.
2. The satellite intelligent assembly process planning system of claim 1, wherein: the assembly relationship comprises a high-level relationship and a basic relationship; wherein, the high-level relation is the hierarchical relation and the connection relation among the parts; the basic relationship is the position relationship and the matching relationship between the geometric features of the parts and the geometric constraints.
3. The satellite intelligent assembly process planning system of claim 2, wherein: the assembly relation definition comprises an assembly knowledge item definition and an assembly semantic definition;
knowledge items are defined to describe the relationships between the assembled objects 2;
assembly semantics are defined to describe assembly objects, assembly actions, assembly sequences, assembly paths, assembly resources.
4. The satellite intelligent assembly process planning system of claim 3, wherein: the assembly design model analysis and feature extraction module adopts a figure-based assembly feature extraction method to obtain the boundary of the part.
5. The satellite intelligent assembly process planning system of claim 4, wherein: the extracted assembly features include assembly feature semantics, geometric elements, an assembly feature coordinate system, fit features, assembly tolerances, and assembly graphic information.
6. The satellite intelligent assembly process planning system of claim 5, wherein: the sequence generation period is shortened by 40%, the assembly process description content and supporting information generation period is shortened by 30%, the assembly process design period is shortened by 30%, and the one-time satellite assembly success rate reaches 90%.
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| CN113011739A (en) * | 2021-03-18 | 2021-06-22 | 航天科工空间工程发展有限公司 | Rolling scheduling method and computer readable storage medium for satellite production |
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