CN114818286A - Engineering machinery complete machine simulation model construction system and method - Google Patents
Engineering machinery complete machine simulation model construction system and method Download PDFInfo
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Abstract
本发明公开了工程机械建模与仿真技术领域的一种工程机械整机仿真模型构建系统及方法，包括：获取外部输入的基模板选择数据、连接关系数据和元件参数数据；基于基模板选择数据选择与机型匹配的基模板；基于连接关系数据在所述基模板中分别构建整机各个系统及元件的顺序连接关系；基于元件参数数据在各个系统依次向下进行元件选取和参数设置，进行整体建模；响应于整体建模完成后，将svg格式的图形信息提交至后台服务器解析，实现图形化在线建模，构建系统模型，以及，向后台服务器提交保存请求。本发明不仅实现了建模过程的标准化和统一化，提高了建模效率和用户的使用体验，还降低了对建模人员技能水平的要求和建模人力成本。
The invention discloses a construction machinery simulation model construction system and method in the technical field of construction machinery modeling and simulation, comprising: acquiring externally input base template selection data, connection relationship data and component parameter data; selecting data based on the base template Select a base template that matches the model; build the sequential connection relationship of each system and component of the whole machine in the base template based on the connection relationship data; perform component selection and parameter setting in each system in turn based on the component parameter data. Overall modeling: In response to the completion of the overall modeling, the graphic information in svg format is submitted to the background server for analysis, to realize graphical online modeling, build a system model, and submit a save request to the background server. The invention not only realizes the standardization and unification of the modeling process, improves the modeling efficiency and the user experience, but also reduces the requirement for the skill level of the modeling personnel and the modeling labor cost.
Description
Technical Field
The invention relates to a system and a method for constructing a complete machine simulation model of engineering machinery, belonging to the technical field of engineering machinery modeling and simulation.
Background
Modelica is a tool language applied to modeling and simulation of a multi-field physical system, has the outstanding advantages of non-causality and object-oriented performance, and is easy to reuse component models. The Modelica language has a powerful modeling function in the fields of hydraulic systems, transmission systems, control systems, mechanical structure systems, circuit systems, power systems and the like. In the engineering machinery electromechanical hydraulic control integrated simulation analysis work, the establishment of a system model is a very critical task, and is a premise and a foundation for the correct simulation operation of the system model.
The reliability block diagram is a representative graph and calculation tool for system modeling, and can visually represent the interdependence relationship among all the units of the system and the logic relationship among all the assemblies. In the past, a designer firstly determines the topological structure of a system model aiming at one system, and then builds a plurality of models to meet the requirements of different system stages. For example, an independent complete machine system model needs to be built, and the topological structure of the model needs to be ensured to be consistent with other models, so that the modeling efficiency is low, errors are easy to occur, the model system is poor, and the expansion and maintenance are not easy.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a system and a method for constructing a complete machine simulation model of an engineering machine, which not only realize standardization and unification of a modeling process, improve modeling efficiency and user experience, but also reduce the requirement on the skill level of modeling personnel and the modeling labor cost.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in a first aspect, the invention provides a method for constructing a complete machine simulation model of an engineering machine, which comprises the following steps:
acquiring externally input base template selection data, connection relation data and element parameter data;
selecting a base template matched with the machine type based on the base template selection data;
respectively constructing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
sequentially performing component selection and parameter setting downwards in each system based on component parameter data, and performing overall modeling;
and after the integral modeling is finished, submitting the graphics information in the svg format to a background server for analysis, realizing graphical online modeling, constructing a system model, and submitting a storage request to the background server, wherein the background server adopts a Modelica modeling language to compile and describe the model.
Further, the base template is constructed according to different models, and the base template can define basic information of the models, wherein the basic information comprises model types, subsystem information and organizational structure relations among subsystems.
Further, the method for constructing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data comprises the following steps: the connection relation of each system of the whole machine is firstly established, and then the connection relation of elements is respectively established in each system, wherein a starting connector and an end connector connect modules through orthogonalized connection lines, connection line end points represent module connectors, and the connection lines represent data transmission relation.
Further, based on the element parameter data, the element selection and the parameter setting are sequentially performed downwards in each system, and the overall modeling is performed, including:
performing performance simulation and optimization design on the product model by changing the parameters of the component;
and setting the variable value of each parameter item through a dialog box, and selecting the unit used by the variable.
Further, the parameter entry includes a variable name, a variable value, a variable unit, and corresponding description information.
Further, after receiving the storage request, the background server acquires the component linked list, traverses the component linked list and the connection linked list, adds a component model code and a connection command, generates an MO text of the system model, and submits the MO text to the server openmodeica for compiling and solving.
Furthermore, the background server compiles and solves the model by calling an OpenModelica software interface on the computing server, and then returns a solving result to the client for data display.
In a second aspect, the present invention provides a system for constructing a complete machine simulation model of an engineering machine, including:
a data receiving module: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring externally input base template selection data, connection relation data and element parameter data;
a base template selection module: the base template is used for selecting a base template matched with the machine type based on the base template selection data;
the whole machine is constructed into a module: the system comprises a base template, a connection relation data module, a data processing module and a data processing module, wherein the base template is used for establishing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
an integral modeling module: the system is used for sequentially carrying out component selection and parameter setting downwards in each system based on component parameter data to carry out integral modeling;
an online modeling module: and the system is used for submitting the graphic information in the svg format to a background server for analysis after responding to the completion of the integral modeling, realizing the graphical online modeling, constructing a system model and submitting a storage request to the background server.
In a third aspect, the invention provides a device for constructing a complete machine simulation model of an engineering machine, which comprises a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any of the above.
In a fourth aspect, the invention provides a computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of any of the methods described above.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the graphic block model to build the overall logic relation of each system of the whole machine model at the browser end, and selects the component models and the element models contained in each system layer by clicking each system contained in the overall model, so as to build the interface relation among each system and further build the whole machine simulation model. The method is suitable for constructing a special rapid modeling simulation platform of a specific type of product, not only realizes standardization and unification of a modeling process, improves modeling efficiency and user experience, but also reduces requirements on skill level of modeling personnel and modeling labor cost.
Drawings
FIG. 1 is a general flowchart of modeling of a whole machine model according to a first embodiment of the present invention;
FIG. 2 is a top-down overall framework diagram for distributed modeling provided by an embodiment of the present invention;
fig. 3 is a design diagram of a distributed top-down model building system according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
the embodiment discloses a Modelica model rapid construction method based on a hierarchical structure template in a Web environment, the method is based on a B/S framework, the whole machine model construction method based on the hierarchical structure template has higher portability, expansibility and maintainability, and the specific modeling process mainly comprises the following steps:
s1, as shown in FIG. 1, constructing an overall logic relationship of the hierarchical modeling; the basic template constructed according to different models is used for defining basic information of the models, including model types, subsystem information and organizational structure relations among subsystems;
s2, FIG. 2 is a distributed modeling top-down whole framework, the sequential connection relation of all systems of the whole machine is respectively constructed, then the contained parts and elements are selected from top to bottom in each system, and the concrete and the refinement of a product system model are realized layer by layer;
and S3, establishing a uniform and standard expression standard of the modeling target object based on the structural template, and realizing accumulation, management, reuse and sharing of modeling knowledge through the established template library. Establishing a corresponding graphical rapid modeling environment aiming at a specific modeling object type, and firstly establishing a connection relation of each system of the whole machine, as shown in FIG. 2; then, respectively constructing the connection relation of elements in each system, and when modeling connection is carried out, connecting the modules by an initial connector and an end connector of the model through an orthogonalized connecting line, wherein the connecting line end points represent module connectors (data transmission interfaces), and the connecting line represents the data transmission relation, so that a mesh system is formed for describing the organizational structure relation between the modules;
s4, sequentially carrying out component selection and parameter setting downwards in each system, selecting a required component model from a component model library, double-clicking a component icon, and opening a component level view interface to carry out component parameter setting;
the function of element parameter setting comprises the following aspects:
(1) performing performance simulation and optimization design on the product model by changing the parameters of the component: the influence of the change of related parameters on the overall performance of the product is researched by changing the performance parameters of key elements or parts and simulating calculation, so that the related parameters are optimally designed;
(2) each parameter item in the parameter setting dialog box comprises a variable name, a variable value, a variable unit and corresponding description information, and a user can set the variable value and select the unit used by the variable;
(3) and the user double-clicks the model icon, requests the information of the model parameter linked list from the server by using the current model ID, and displays the information in the independent parameter window, so that the user can conveniently and efficiently finish the part editing and parameter modification. And clicking to create a new model by a user, popping up a new model child window, filling a model name, a template type and a storage path in the window, clicking to confirm, and newly creating a template. Selecting a base template for building a product model from a system template library, and carrying out modular decomposition on the product from top to bottom step by step, wherein each module has relative independence on physical functions, thereby realizing step-by-step personalized configuration of template information.
And S5, after the integral modeling is completed, submitting the graphic information in the svg format to a background server for analysis, realizing the graphical online modeling, and constructing a system model simply and quickly.
And S6, submitting a storage request, acquiring the component linked list by the server, traversing the component linked list, and adding the component model code. And traversing the link list and adding a link command. And generating an MO text of the system model, and submitting the MO text to the OpenModelica of the server side for compiling and solving. The graphical modeling of the model is completed at the browser end, the graphical information is uploaded to the server end in an svg graphical format, an OpenModelica software interface on the computing server is called, the model is compiled and solved, and then the solved result is returned to the client end for data display.
Example two:
a construction system of a complete machine simulation model of an engineering machine can realize the construction method of the complete machine simulation model of the engineering machine in the first embodiment, and comprises the following steps:
a data receiving module: the system comprises a base template selection module, a connection relation module and a component parameter module, wherein the base template selection module is used for acquiring externally input base template selection data, connection relation data and component parameter data;
a base template selection module: the base template is used for selecting a base template matched with the machine type based on the base template selection data;
the whole machine is constructed into a module: the system comprises a base template, a connection relation data module, a data processing module and a data processing module, wherein the base template is used for establishing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
an integral modeling module: the system is used for sequentially carrying out component selection and parameter setting downwards in each system based on component parameter data to carry out integral modeling;
an online modeling module: and the system is used for submitting the graphic information in the svg format to a background server for analysis after responding to the completion of the integral modeling, realizing the graphical online modeling, constructing a system model and submitting a storage request to the background server.
Example three:
the embodiment of the invention also provides a device for constructing the whole engineering machine simulation model, which can realize the method for constructing the whole engineering machine simulation model in the embodiment one and comprises a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method of:
acquiring externally input base template selection data, connection relation data and element parameter data;
selecting a base template matched with the machine type based on the base template selection data;
respectively constructing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
sequentially performing component selection and parameter setting downwards in each system based on component parameter data, and performing overall modeling;
and after the integral modeling is finished, submitting the graphical information in the svg format to a background server for analysis, realizing graphical online modeling, constructing a system model, and submitting a storage request to the background server.
Example four:
the embodiment of the present invention further provides a computer-readable storage medium, which can implement the method for constructing a complete machine simulation model of an engineering machine described in the first embodiment, wherein a computer program is stored thereon, and when the program is executed by a processor, the method includes the following steps:
acquiring externally input base template selection data, connection relation data and element parameter data;
selecting a base template matched with the machine type based on the base template selection data;
respectively constructing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
sequentially performing component selection and parameter setting downwards in each system based on component parameter data, and performing overall modeling;
and after the integral modeling is finished, submitting the graphical information in the svg format to a background server for analysis, realizing graphical online modeling, constructing a system model, and submitting a storage request to the background server.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A construction method of a complete machine simulation model of engineering machinery is characterized by comprising the following steps:
acquiring externally input base template selection data, connection relation data and element parameter data;
selecting a base template matched with the machine type based on the base template selection data;
respectively constructing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
sequentially performing component selection and parameter setting downwards in each system based on component parameter data, and performing overall modeling;
and after the integral modeling is finished, submitting the graphical information in the svg format to a background server for analysis, realizing graphical online modeling, constructing a system model, and submitting a storage request to the background server.
2. The construction method of the complete machine simulation model of the engineering machine according to claim 1, wherein the base template is constructed according to different machine types, and the base template can define basic information of the machine types, wherein the basic information comprises machine type, subsystem information and organizational structure relations among subsystems.
3. The construction method of the whole engineering machinery simulation model according to claim 1, wherein the step of respectively constructing the sequential connection relations of each system and element of the whole engineering machinery in the base template based on the connection relation data comprises the following steps: the connection relation of each system of the whole machine is firstly established, and then the connection relation of elements is respectively established in each system, wherein a starting connector and an end connector connect modules through orthogonalized connection lines, connection line end points represent module connectors, and the connection lines represent data transmission relation.
4. The construction method of the engineering machinery complete machine simulation model as claimed in claim 1, wherein the component selection and parameter setting are performed sequentially downward in each system based on component parameter data to perform the overall modeling, comprising:
performing performance simulation and optimization design on the product model by changing the parameters of the component;
and setting the variable value of each parameter item through a dialog box, and selecting the unit used by the variable.
5. The construction method of the complete machine simulation model of the engineering machine according to claim 4, wherein the parameter entries comprise variable names, variable values, variable units and corresponding description information.
6. The construction method of the engineering machinery complete machine simulation model as claimed in claim 1, wherein after the background server receives the storage request, the MO text of the system model is generated by obtaining the component linked list, traversing the component linked list and the connection linked list, adding the component model code and the connection command, and submitting the MO text to the server openmodeica for compiling and solving.
7. The construction method of the engineering machinery complete machine simulation model as claimed in claim 1, wherein the background server compiles and solves the model by calling an openmodeica software interface on the computing server, and then returns the solved result to the client for data display.
8. A construction system of a complete machine simulation model of engineering machinery is characterized by comprising the following components:
a data receiving module: the system comprises a base template selection module, a connection relation module and a component parameter module, wherein the base template selection module is used for acquiring externally input base template selection data, connection relation data and component parameter data;
a base template selection module: the base template is used for selecting a base template matched with the machine type based on the base template selection data;
the whole machine is constructed into a module: the system comprises a base template, a connection relation data module, a data processing module and a data processing module, wherein the base template is used for establishing the sequential connection relation of each system and element of the whole machine in the base template based on the connection relation data;
an integral modeling module: the system is used for sequentially performing component selection and parameter setting downwards in each system based on component parameter data to perform integral modeling;
an online modeling module: and the system is used for submitting the graphic information in the svg format to a background server for analysis after responding to the completion of the integral modeling, realizing the graphical online modeling, constructing a system model and submitting a storage request to the background server.
9. A construction device of a complete machine simulation model of engineering machinery is characterized by comprising a processor and a storage medium;
the storage medium is used for storing instructions;
the processor is configured to operate in accordance with the instructions to perform the steps of the method according to any one of claims 1 to 7.
10. Computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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