CN110348095B - Flexible cable simulation analysis method under virtual reality platform - Google Patents
Flexible cable simulation analysis method under virtual reality platform Download PDFInfo
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- CN110348095B CN110348095B CN201910584096.3A CN201910584096A CN110348095B CN 110348095 B CN110348095 B CN 110348095B CN 201910584096 A CN201910584096 A CN 201910584096A CN 110348095 B CN110348095 B CN 110348095B
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Abstract
The invention discloses a flexible cable simulation analysis method under a virtual reality platform, which comprises the following specific steps: the method comprises the steps of building a flexible cable simulation analysis system, defining electrical nodes by an electrical design module, designing a cable structure model by a structural design module, creating a cable simulation analysis model by a flexible cable setting module, setting cable attributes by the flexible cable setting module, setting motion simulation boundary conditions by the motion simulation analysis module, carrying out flexible cable motion simulation by the motion simulation analysis module, optimizing cable wiring by the flexible cable simulation module, carrying out environmental factor influence analysis by the motion simulation analysis module, and outputting a simulation result and a file record. The method solves the problems of cable design and flexible simulation, can realize the optimal design of the cable length and the assembly process, and effectively reduces the scheme repetition in the equipment development process.
Description
Technical Field
The invention relates to a simulation analysis method of a flexible cable, in particular to a simulation analysis method of a flexible cable under a virtual reality platform.
Background
The working characteristics and reliability of cable products in aerospace equipment are always the key points of attention of designers, and the design simulation work is always a difficult problem under the condition that no physical product can be referred to. The quality problem caused by the unreasonable cable design also always puzzles structural and electrical designers, according to incomplete statistics, the flying accidents caused by the cable problem reach more than 40%, and the rationality of cable design and assembly directly concerns the reliability of products.
Due to the limitation of the turning radius of the wire core, the cable is not a complete rigid body or a complete elastic body, cannot be solved by using traditional statics or dynamics simulation, has great difficulty in length design and assembly path analysis, and is difficult to investigate and position quality problems. Meanwhile, if only depending on the traditional three-dimensional model, the factors such as a field, an operator, a flexible device and the like are difficult to be considered comprehensively, and the control on the product design rationality only depends on the experience of a designer. Due to the fact that the operating space of a product is limited, under the condition that physical reference is lacked, the cable cannot provide an accurate design scheme in terms of structural design and installation process in time, physical operation and perfection can be carried out only in a multi-time trial and error mode, and project development progress is difficult to guarantee.
The conventional cable products are not used as independent products for motion simulation analysis, and the design depends on the experience of designers more, so that the success rate of one-time design and the product quality are difficult to ensure. The existing virtual reality platform has the cable flexible modeling and processing functions and can effectively support the simulation analysis work of the flexible cable.
Disclosure of Invention
The invention aims to provide a flexible cable simulation analysis method under a virtual reality platform, and solves the problem that most of laying and installation rely on the experience of designers when a rigid modeling method is adopted in the conventional cable design.
A flexible cable simulation analysis method under a virtual reality platform comprises the following specific steps:
first step of constructing flexible cable simulation analysis system
The flexible cable simulation analysis system comprises: the device comprises an electrical design module, a structural design module, a flexible cable setting module and a motion simulation analysis module; the electrical design module is used for electrical design and specifically comprises definition of cable nodes, interfaces and connection relations; the structure design module is used for creating a cable three-dimensional structure model; the flexible cable setting module is used for creating a flexible cable model and setting the attribute of the flexible cable; the motion simulation analysis module is used for analyzing the motion of the flexible cable;
the second step of electrical design module carries out electrical design
The electric design module defines cable nodes, interfaces and connection relations, outputs results in a neutral logic file form and is used for designing a three-dimensional structure model of the cable;
third step structural design module design cable three-dimensional structure model
The structural design module converts the logical relation of the cable into cable outlet end definition, and completes the design of a three-dimensional structural model of the cable by setting the cable direction and the fixed position;
fourth step flexible cable setting module creates flexible cable model
The flexible cable setting module guides the three-dimensional models of the cable and the connecting equipment thereof into the flexible cable setting module, and adopts a coordinate system for positioning so as to ensure the unification of the relative position relationship of the simulation model and the design model; meanwhile, a flexible cable simulation module is adopted, a flexible cable model is created again according to the trend and the position relation of the cable three-dimensional model, and a mode of loading the flexible cable section by section along the cable structure model to regenerate is adopted;
fifthly, the flexible cable setting module sets the attribute of the flexible cable
The flexible cable setting module sets the minimum turning radius, the elastic modulus, the cable diameter and the length information of the flexible cable in the fourth step according to the actual physical attributes of the cable, and records the information in a cable attribute library to be simulated and applied;
the sixth step is that the motion simulation analysis module sets the boundary condition of motion simulation
The motion simulation analysis module establishes connection and follow-up relation between the cable and the equipment, directly binds the cable end head to the wire outlet end of the follow-up equipment, and limits the motion relation between the equipment and the cable through assembly or the setting of a motion path; returning to the flexible cable simulation module, and starting simulation analysis items of the minimum bending radius, the maximum stretching length and the model interference;
motion simulation analysis module for flexible cable motion simulation
The motion simulation analysis module analyzes and records the motion envelope of the follow-up flexible cable through the motion simulation of the equipment, and records the problems of overlarge interference position, overlarge length and undersize turning;
eighth step flexible cable setting module for cable wiring optimization
The flexible cable simulation module starts the motion cut-off function of the minimum bending radius, the maximum stretching length and the model interference, returns to the motion simulation analysis module, and performs multiple motion simulation analysis, and the step is the same as the seventh step, and records the position and length information of the minimum envelope of the cable motion on the basis of meeting all simulation conditions to form an optimization scheme of wiring;
ninth step motion simulation analysis module for analyzing influence of environmental factors
The motion simulation analysis module is added with the factors of personnel, fields, equipment and tools, and comprehensively inspects the design rationality of space and tool matching;
tenth step of outputting simulation result and file record
And (3) outputting the cable assembly process of the final scheme in a video mode by applying the output function of the motion simulation analysis module, and recording the cable assembly process as a simulation result, wherein the cable assembly process can be used for guiding final assembly production.
The method realizes the flexible cable simulation analysis method under the virtual reality platform, solves the problems of cable design and flexible simulation, can effectively realize the cable length and assembly design, and predicts that the technical result has good industrialization prospect.
Drawings
Fig. 1 is a flow chart of a flexible cable simulation analysis method under a virtual reality platform.
Detailed Description
Example 1
A flexible cable simulation analysis method under a virtual reality platform is provided, when a product relates to cable assembly and movement, a rigid CAD design model can not meet the simulation analysis requirement, and a virtual reality technology can carry out flexible modeling aiming at the characteristics of a cable network based on the existing assembly process analysis method. The analysis rule of the cable network assembly space is established through the cable analysis simulation platform, dynamic simulation is developed according to the analysis rule, and the assembly method, the assembly sequence and the assembly process of the cable on the missile are analyzed, so that the problems are positioned and solved more quickly. For example, when the kinematic pair cable simulation of an organization product is developed, the following steps can be adopted:
first step of constructing flexible cable simulation analysis system
And constructing a flexible cable simulation analysis system comprising an electrical design module, a structural design module, a flexible cable setting module, a motion simulation analysis module and the like. The electrical design module is used for electrical design and specifically comprises definition of cable nodes, interfaces and connection relations; the structure design module is used for creating a cable three-dimensional structure model; the flexible cable setting module is used for creating a flexible cable model and setting the attribute of the flexible cable; the motion simulation analysis module is used for analyzing the motion of the flexible cable.
The second step of electrical design module carries out electrical design
According to the connection relation of cables on the mechanism kinematic pair, defining cable nodes, interfaces and connection relation through an electrical design module, and outputting results in a form of a neutral logic file for designing a three-dimensional structure model of the cable.
Third step structural design module design cable three-dimensional structure model
On the basis of a structural design model of the mechanism kinematic pair, a cable assembly component is newly built, the logical relation of a cable is converted into a cable outlet end definition through a structural design module, and the cable trend, the fixed position, the branch design and the like are set according to the binding point position and the moving part range on the kinematic pair, so that the design of a three-dimensional structural model of the cable is completed.
Fourth step flexible cable setting module creates flexible cable model
The flexible cable setting module leads the three-dimensional models of the kinematic pair and the cables thereof into the flexible cable setting module, and a coordinate system assembly relation is adopted to ensure the unification of the position relation of the simulation model and the design model. And simultaneously, a flexible cable simulation module is applied, and all the cables related to simulation analysis in the kinematic pair are flexibly reconstructed in a mode of loading the flexible cables along the cable structure model section by section for regeneration.
Fifthly, the flexible cable setting module sets the flexible cable attribute
The flexible cable setting module respectively sets minimum turning radius, elastic modulus, cable diameter and length information according to actual physical attributes of different cables in the kinematic pair, and carries out feature renaming, for example, ab _05 \/20, represents a cable connecting a device and a device b, the diameter is 5mm, the minimum turning radius is 20mm, so as to distinguish the flexible cables with different physical characteristics and record the flexible cables in a cable attribute library simulated by the kinematic pair.
Setting motion simulation boundary conditions by a motion simulation analysis module
The motion simulation analysis module establishes the connection and follow-up relationship between the motion pair and different cables, directly binds the cable end head at the outlet end of the motion mechanism, and limits the motion relationship between the equipment and the cables through the assembly or the arrangement of the motion path. And returning to the flexible cable simulation module, and starting simulation analysis items of the minimum bending radius, the maximum stretching length and the model interference.
Motion simulation analysis module for flexible cable motion simulation
The motion simulation analysis module simulates the motion of a mechanism motion part according to the motion set track of the mechanism through the motion simulation of the kinematic pair, records the follow-up behavior and the swept area of the flexible cable, and records the problems of overlarge interference position, overlarge length and too small turning.
Eighth step of cable routing optimization by flexible cable simulation module
And the flexible cable setting module starts the motion cut-off function of minimum bending radius, maximum stretching length and model interference, returns to the motion simulation analysis module, performs multiple motion simulation analysis, and the steps are the same as the seventh step. And determining the optimal laying mode and the reasonable length of the cable until the design requirement is met, and recording the adjusted scheme.
The ninth step motion simulation analysis module carries out environmental factor influence analysis
And after the motion simulation analysis module finishes the single machine simulation of the motion mechanism, adding external factors such as personnel, fields and tools, repeating the seventh simulation step and the eighth optimization step, recording a final optimization scheme if the design and use requirements are met, and adjusting the cable length and the laying mode again if the design and use requirements are not met, and repeating the processes.
Tenth step of outputting simulation result and file record
And (3) applying the output function of the motion simulation analysis module, and outputting the cable motion process of the final scheme in a video mode as a simulation result to be recorded after the comprehensive scene simulation analysis of the motion mechanism passes.
Example 2
The flexible cable simulation analysis system comprises: the device comprises an electrical design module, a structural design module, a flexible cable setting module and a motion simulation analysis module. The electrical design module is used for defining cable nodes, interfaces and connection relations; the structure design module is used for creating a three-dimensional structure rigid model of the cable; the flexible cable setting module is used for creating a flexible cable model and setting the attribute of the flexible cable; the motion simulation analysis module is used for analyzing the motion of the flexible cable.
Claims (2)
1. A flexible cable simulation analysis method under a virtual reality platform is characterized by comprising the following specific steps:
first step of constructing flexible cable simulation analysis system
The flexible cable simulation analysis system comprises: the device comprises an electrical design module, a structural design module, a flexible cable setting module and a motion simulation analysis module; the electrical design module is used for electrical design and specifically comprises definition of cable nodes, interfaces and connection relations; the structure design module is used for creating a three-dimensional structure rigid model of the cable; the flexible cable setting module is used for creating a flexible cable model and setting the attribute of the flexible cable; the motion simulation analysis module is used for analyzing the motion of the flexible cable;
the second step of electrical design module carries out electrical design
The electric design module defines cable nodes, interfaces and connection relations, outputs results in a neutral logic file form and is used for designing a cable three-dimensional structure model;
third step structural design module design cable three-dimensional structure model
The structural design module converts the logical relation of the cable into cable outlet end definition, and completes the design of a three-dimensional structural model of the cable by setting the cable direction and the fixed position;
fourth step flexible cable setting module creates flexible cable model
The flexible cable setting module guides the three-dimensional models of the cable and the connecting equipment thereof into the flexible cable setting module, and adopts a coordinate system for positioning so as to ensure the unification of the relative position relationship of the simulation model and the design model; meanwhile, a flexible cable simulation module is adopted, a flexible cable model is created again according to the trend and the position relation of the cable three-dimensional model, and a mode of loading the flexible cable section by section along the cable structure model to regenerate is adopted;
fifthly, the flexible cable setting module sets the flexible cable attribute
The flexible cable setting module sets the minimum turning radius, the elastic modulus, the cable diameter and the length information of the flexible cable in the fourth step according to the actual physical attributes of the cable, and records the information in a cable attribute library to be simulated and applied;
the sixth step is that the motion simulation analysis module sets the boundary condition of motion simulation
The motion simulation analysis module establishes connection and follow-up relation between the cable and the equipment, directly binds the cable end head to the outlet end of the follow-up equipment, and limits the motion relation between the equipment and the cable through assembly or the setting of a motion path; returning to the flexible cable simulation module, and starting simulation analysis items of the minimum bending radius, the maximum stretching length and the model interference;
motion simulation analysis module for flexible cable motion simulation
The motion simulation analysis module analyzes and records the motion envelope of the follow-up flexible cable through equipment motion simulation, and records the problems of too large interference position, too long length and too small turning;
eighth step of optimizing cable wiring by using flexible cable setting module
The flexible cable simulation module starts the motion cut-off function of the minimum bending radius, the maximum stretching length and the model interference, returns to the motion simulation analysis module, and performs multiple motion simulation analysis, and the step is the same as the seventh step, and records the position and length information of the minimum envelope of the cable motion on the basis of meeting all simulation conditions to form an optimization scheme of wiring;
ninth step motion simulation analysis module for analyzing influence of environmental factors
The motion simulation analysis module is added with the factors of personnel, fields, equipment and tools, and comprehensively inspects the design rationality of space and tool matching;
tenth step of outputting simulation result and file record
And (3) outputting the cable assembly process of the final scheme in a video mode by applying the output function of the motion simulation analysis module, and recording the cable assembly process as a simulation result, wherein the cable assembly process can be used for guiding final assembly production.
2. A flexible cable simulation analysis system for performing the flexible cable simulation analysis method under the virtual reality platform according to claim 1, comprising: the device comprises an electrical design module, a structural design module, a flexible cable setting module and a motion simulation analysis module; the electrical design module is used for electrical design and specifically comprises definition of cable nodes, interfaces and connection relations; the structure design module is used for creating a cable three-dimensional structure model; the flexible cable setting module is used for creating a flexible cable model and setting the attribute of the flexible cable; the motion simulation analysis module is used for analyzing the motion of the flexible cable.
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| CN111880436A (en) * | 2020-07-30 | 2020-11-03 | 河南工业职业技术学院 | Electrical control circuit simulation system |
| CN114722552B (en) * | 2022-06-09 | 2022-11-08 | 深圳荣耀智能机器有限公司 | Cable length verification method and electronic equipment |
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