CN112633832B - Design node configuration method for configurable design of mechanical product - Google Patents
Design node configuration method for configurable design of mechanical product Download PDFInfo
- Publication number
- CN112633832B CN112633832B CN202011539301.3A CN202011539301A CN112633832B CN 112633832 B CN112633832 B CN 112633832B CN 202011539301 A CN202011539301 A CN 202011539301A CN 112633832 B CN112633832 B CN 112633832B
- Authority
- CN
- China
- Prior art keywords
- design
- node
- design node
- parameter
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000013461 design Methods 0.000 title claims abstract description 826
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000004364 calculation method Methods 0.000 claims abstract description 115
- 238000004590 computer program Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000012216 screening Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 9
- 230000009191 jumping Effects 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 6
- 238000011161 development Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/10—Office automation; Time management
- G06Q10/103—Workflow collaboration or project management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
Abstract
The invention discloses a design node configuration method for configurable design of a mechanical product, which comprises the steps of pre-arranging a design flow database storing design node flow information of configurable design projects, a design node database storing design node configuration data and a calculation model database storing design node parameter configuration models, executing the design node configuration by arranging a computer program, automatically reading the sequence of each design node in the configurable design project flow from the design flow database by the computer program, and carrying out matching and retrieval from the calculation model database according to the design node configuration data of the design nodes, thereby simplifying the processing complexity, avoiding the problem of repeated development, improving the convenience of the design node configuration work in the configurable design of the mechanical product, being beneficial to reducing the design cost, enabling the invoking of the design node parameter configuration models to be richer and more flexible, assisting the optimization of the design parameters and having good technical application prospect.
Description
Technical Field
The invention relates to the technical field of industrial design of mechanical products, in particular to a design node configuration method for configurable design of mechanical products.
Background
The configurable design of mechanical structure products (short for mechanical products) such as instruments, parts and the like aims to solve the problems of complicated functions of the mechanical products of the products and personalized demands of users. Compared with the traditional product overall design method, the main difference of the configurable design method is that: instead of re-designing the whole design object (product or part), the design object is disassembled into different local design parts, which are called design nodes, design characteristic parameters of each design node (the design characteristic parameters generally comprise design parameters of structural characteristics of the local design part and design parameters of structural characteristics matched with other local design parts, the design parameters generally comprise data such as shapes, sizes and allowed machining tolerances) are determined, then a parameter configuration model of each design node is respectively established by applying configuration knowledge, and parameter values taken by the design characteristic parameters of each design node are configured by rule reasoning, so that a design characteristic parameter configuration result of each design node is obtained, and the design of the design object is completed. Thus, the configurable design methodology helps to improve the design efficiency of new products.
The configurable design of existing products and components is typically developed through a pre-arranged design flow. The design flow of the configurable design refers to design nodes for analyzing and extracting basic functions of design links and realizing the design functions through the design process of decomposing products and parts; then, the logic configuration of the design flow is completed through the recombination of the design nodes, and the rapid adjustment and change of the design flow are realized.
However, the current configurable design method still has a plurality of problems and limitations:
(1) and the configuration work of the design node is complicated. In the design flow of the configurable design project, the configuration work of each design node is mutually independent, and the connection coordination relation between the design nodes needs to be handled by a designer, that is, the designer needs to specifically consider which design feature parameters in the current design nodes are associated and matched with local design parts of other nodes, and handle the design feature parameter transfer relation between the design nodes according to the coordination relation, so that the designer needs to know the sequence and association relation of each design node in the design flow, and the complexity and workload of the configuration work of the design nodes are increased.
(2) The limited applicable environment of the design nodes leads to repeated development. In the current configurable design method, a fixed design node parameter configuration model is arranged for each design node, and after the design input parameters configured by the design node parameter configuration model are input, the design characteristic parameters are directly calculated and output by the model; the method has the advantages that each design node in the design flow of one configurable design project is solidified, the node functions are simple and single, the node is difficult to be changed and then is applied to other differentiated configurable design projects, and the design flexibility is insufficient; therefore, the designed configurable design project can only be suitable for specific design environments, and if the designed configurable design project is required to be re-adapted to new design environments, the bottom source code is modified or the design nodes are repeatedly developed for the second time, so that development cost is increased.
(3) The design accuracy is difficult to guarantee, and the design parameter optimization is difficult. In the current configurable design method, the flow relevance among all design nodes in a configurable design project is insufficient, the connection coordination relation needs to be processed by a designer, and the problem that the designer ignores the accumulated errors of the machining tolerance of parameter configuration among different design links is easily caused, so that the accumulated errors of the parameter configuration among different design links often occur, the final accumulated errors exceed the design requirement, the problem that the overall design precision of a design object is difficult to guarantee is caused, and the parameter precision optimizing is difficult to carry out due to huge calculation work.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is how to provide a new solution for the design node configuration method for the configurable design of the mechanical product, so as to help further improve the convenience of the configurable design of the mechanical product and reduce the design cost.
In order to solve the technical problems, the invention adopts the following technical scheme:
a design node configuration method for configurable design of a mechanical product comprises the steps of pre-arranging a design flow database storing design node flow information of configurable design projects, a design node database storing design node configuration data and a calculation model database storing a design node parameter configuration model; the configurable design project flow is used for recording all design nodes which are experienced according to the flow needs in the configurable design of the mechanical product; the design node configuration data is used for recording design input parameters required by executing the design node configuration processing and design characteristic parameters output by the design node configuration data; the design node parameter configuration model is used for indicating a function calculation relation between design characteristic parameters and design input parameters in the design node; and then arranging a computer program to execute design node configuration, reading the sequence of each design node in the configurable design project flow from a design flow database, respectively reading the respective design node configuration data of each design node from the design flow database, respectively calling a design node parameter configuration model matched with the respective design node configuration data of each design node from a calculation model database to calculate and obtain the parameter value of the design characteristic parameter of the corresponding design node, thereby sequentially determining the parameter value of the design characteristic parameter of each design node according to the flow sequence in the design project flow, and further completing the configuration processing of the design characteristic parameter of each design node in the design project flow.
In the above method for configuring design nodes for configurable design of a machine product, as a preferred solution, a computer program for executing configuration of design nodes performs the following steps:
1) Obtaining the sequence of each design node in the current to-be-processed configurable design project flow from a design flow database; sequentially reading one design node as a current design node, and entering step 2);
2) Obtaining design input parameters of a current design node;
3) Reading design node configuration data of a current design node from a design flow database, retrieving a design node parameter configuration model matched with the design node configuration data of the current design node from a calculation model database, taking the design input parameters as input of the matched design node parameter configuration model, and calculating to obtain parameter values of design characteristic parameters in the current design node;
4) Judging whether a next design node in sequence exists in the current configurable design project flow to be processed or not; if so, the design characteristic parameters of the current design node are exported to the design input parameters of the next design node, and the step 5) is executed; if not, jumping to execute the step 6);
5) Taking the next design node as a new current design node, and returning to the execution step 2);
6) And completing the configuration processing of the design characteristic parameters of each design node in the current to-be-processed configurable design project flow.
In the method for configuring the design nodes of the configurable design of the mechanical product, as an optimal scheme, in the current configurable design project to be processed, the configuration completion state of the design characteristic parameters of each design node is recorded;
in the step 1), one design node is sequentially read as the current design node, that is, the design node which is not yet completed in configuration of the forefront design feature parameter in the configurable design project to be processed currently is sequentially read as the current design node.
In the above method for configuring design nodes of configurable design of a machine product, as an preferable solution, the design input parameters of the current design node obtained in the step 2) are design parameters from external input, or/and design parameters pre-configured in a design node parameter configuration model matched with the current design node, or/and design feature parameters from a last design node in sequence in a current flow of configurable design projects to be processed.
In the design node configuration method for the configurable design of the mechanical product, as a preferred scheme, the design node configuration data is also used for recording the type information of the design node;
the design node parameter configuration model is also recorded with the adapted design node type, the adapted design input parameter information and the design characteristic parameter information.
In the above method for configuring design nodes of configurable design of a machine product, as a preferred solution, in the step 3), the specific step of retrieving, from a calculation model database, a design node parameter configuration model that matches with design node configuration data of a current design node is as follows:
3.1 Confirming the type of the design node to which the current design node belongs according to the design node configuration data of the current design node, and then screening all design node parameter configuration models which can be adapted to the type of the design node to which the current design node belongs from a calculation model database;
3.2 Selecting a design node parameter configuration model from the design node parameter configuration models screened in the step 3.1);
3.3 Judging whether the design input parameter information and the design characteristic parameter which are adapted in the design node parameter configuration model selected in the step 3.2) are consistent with the design input parameter and the design characteristic parameter of the current design node; if yes, go to step 3.4); otherwise, returning to the step 3.2);
3.4 And 3.2) taking the design node parameter configuration model selected in the step 3.2) as a design node parameter configuration model matched with the current design node.
In the design node configuration method for the configurable design of the mechanical product, as a preferred scheme, the method further comprises the step 3.5) if all the design node parameter configuration models screened in the traversing judging step 3.1) cannot be matched with the current design node, creating a new design node parameter configuration model matched with the current design node, updating and storing the new design node parameter configuration model in a calculation model database, and calling the new design node parameter configuration model matched with the current design node.
In the design node configuration method for the configurable design of the mechanical product, as an optimal scheme, the design node configuration data is also used for recording repeated calculation requirements and repeated calculation control parameters of the design node; the repeated calculation requirement of the design node is used for indicating whether the design node needs to obtain a plurality of alternative parameter value calculation results through multiple times of calculation to select an optimal value; the repeated calculation control parameters of the design node are used for indicating the input parameter value interval and value step length which are corresponding to the requirement of obtaining the optimal parameter when the repeated calculation requirement exists, the termination condition for terminating the parameter value calculation and the optimal design value screening rule.
In the above method for configuring design nodes of configurable design of a mechanical product, as a preferred solution, in the step 3), the specific steps for calculating the parameter values of the design feature parameters in the current design nodes are as follows:
3.a) judging whether the current design node has repeated calculation requirements according to the design node configuration data of the current design node; if yes, go to step 3.b); otherwise, directly calculating the parameter value of the design characteristic parameter for a single time, and executing the step 3. D);
3.b) obtaining repeated calculation control parameters of the current design node according to the design node configuration data of the current design node; then according to the setting of the repeated calculation control parameters, using a design node parameter configuration model matched with the current design node, respectively inputting the design input parameters into the design node parameter configuration model according to the value interval and the value step length set by the repeated calculation control parameters, and respectively calculating for a plurality of times to obtain a plurality of alternative parameter value calculation results until reaching the termination condition of termination parameter value calculation set by the repeated calculation control parameters; executing step 3.c);
3.c) screening out the parameter values meeting the optimal design value screening rule from the alternative parameter value calculation results according to the optimal design value screening rule set by the repeated calculation control parameters of the current design node, and taking the parameter values as the parameter values of the design characteristic parameters;
D) outputting the parameter values of the design feature parameters in the current design node.
In the design node configuration method for the configurable design of the mechanical product, as an optimal scheme, the design node configuration data is also used for recording node branch information of the design node; the node branch information of the design node is used for indicating the next node information of the design node in the design project flow where the design node is located;
in the step 4), the specific mode of judging whether the next design node in sequence exists in the current to-be-processed configurable design project flow is determined according to the sequence of each design node in the current to-be-processed configurable design project flow or according to the node branch information of the current design node.
Compared with the prior art, the invention has the beneficial effects that:
1. the design node configuration method for the configurable design of the mechanical product of the invention comprises the steps of pre-arranging a design flow database storing design node flow information of the configurable design project, a design node database storing design node configuration data and a calculation model database storing a design node parameter configuration model, executing the design node configuration by arranging a computer program, automatically reading each design node sequence in the flow of the configurable design project from the design flow database by the computer program, and simplifying the processing complexity; in addition, the design node parameter configuration model used for the design node is also matched and fetched from the calculation model database by the computer program according to the design node configuration data of the design node, so that the design node parameter configuration model matched with the design node of the same type can be used in different configurable design projects in an adapting way, and the problem of repeated development is avoided.
2. In the design node configuration method, the design node parameter configuration model of the calculation model database can be modified, edited and updated in real time, no designer is required to modify the bottom source code or secondarily develop the design node parameter configuration model like the existing design node configuration, and meanwhile, a new design node parameter configuration model can be synchronously stored in the calculation model database, so that the later inquiry, calling and modification are convenient, and the calling of the design node parameter configuration model is more abundant and flexible.
3. In the design node configuration method, through the optimization design of the parameter value calculation flow of the design characteristic parameters, whether the single calculation value of the parameters is required to be executed or the preferred value is required to be calculated for multiple times can be judged according to the repeated calculation requirement conditions of different design nodes, so that in the design nodes with easy design error accumulation, the parameter value calculation of the design characteristic parameters adopts the mode of carrying out multi-point calculation and multi-point value calculation in a value-available interval and optimizing and screening the best value, and the parameter value error of a single design node is reduced as much as possible, so that the aim of reducing the accumulated error of multiple design nodes is fulfilled.
4. The design node configuration method for the configurable design of the mechanical product greatly improves the convenience of the configuration work of the design nodes in the configurable design of the mechanical product, is beneficial to reducing the design cost, can assist in optimizing the design parameters, and has good technical application prospect.
Drawings
FIG. 1 is a schematic diagram showing the state that a design node parameter configuration model matched with the same type of design nodes can be used in different configurable design projects in the design node configuration method for the configurable design of the mechanical product.
FIG. 2 is an exemplary diagram of one embodiment of parameter information for designing input parameter information and design feature parameters in a method for configuring a design node for a configurable design of a machine product according to the present invention.
FIG. 3 is a flow chart of one embodiment of a method for configuring a design node for a configurable design of a machine product according to the present invention.
Detailed Description
Aiming at the defects existing in the configurable design scheme of the existing mechanical product, the invention provides a new design node configuration method for the configurable design of the mechanical product, and more design node configuration work is carried out by means of computer technology, so that convenience of the configurable design of the mechanical product is further improved, and design cost is reduced.
The invention relates to a design node configuration method for configurable design of a mechanical product, which comprises the steps of firstly, pre-arranging a design flow database storing design node flow information of configurable design projects, a design node database storing design node configuration data and a calculation model database storing a design node parameter configuration model; the configurable design project flow is used for recording all design nodes which are experienced according to the flow needs in the configurable design of the mechanical product; the design node configuration data is used for recording design input parameters required by executing the design node configuration processing and design characteristic parameters output by the design node configuration data; the design node parameter configuration model is used for indicating a function calculation relation between design characteristic parameters and design input parameters in the design node; then, arranging a computer program to execute design node configuration, reading the sequence of each design node in the configurable design project flow from a design flow database, respectively reading the respective design node configuration data of each design node from the design flow database, respectively calling the design node parameter configuration model matched with the respective design node configuration data of each design node from a calculation model database to calculate and obtain the parameter value of the design characteristic parameter of the corresponding design node, thereby sequentially determining the parameter value of the design characteristic parameter of each design node according to the flow sequence in the design project flow, and completing the configuration processing of the design characteristic parameter of each design node in the design project flow.
In the design node configuration method for the configurable design of the mechanical product, as the design flow database and the design node database are arranged in advance, the design flow database is used for recording the design node flow information of the configurable design project, namely, the sequence information of each design node in the design project in the design flow can be configured, and the design node database is used for storing the design node configuration data corresponding to different design nodes; meanwhile, a calculation model database is arranged in advance and used for storing various designed node parameter configuration models which are designed in advance; the information and the data of the prearranged storage records are used for being called in the subsequent design node configuration processing work; in addition, the configuration of the design nodes is executed by arranging a computer program, and the computer program automatically reads the sequence of each design node in the configurable design project flow from a design flow database, so that the problem of connection coordination relation among the design nodes is not required to be operated and processed by a designer, and the processing complexity is simplified; in addition, the design node parameter configuration model used for the design node is matched and called from the calculation model database by the computer program according to the design node configuration data of the design node, so that the design node parameter configuration model matched by the design node of the same type can be used in different configurable design projects in an adapting way, as shown in fig. 1, thereby avoiding the problem that a plurality of design nodes of the same type need to be repeatedly developed when being used in different configurable design projects, and saving the technical development cost. Therefore, a designer only needs to call a matchable design node parameter configuration model according to the sequence of design nodes in a configurable design project according to a computer program to calculate and obtain parameter values of design characteristic parameters of corresponding design nodes, so that the parameter values of the design characteristic parameters of each design node in the design project flow can be conveniently and sequentially determined, the configuration processing of the design characteristic parameters of each design node in the design project flow is completed, the complex configuration and control process of the existing configurable design flow is greatly simplified, and the convenience of the configuration work of the design nodes in the configurable design of a mechanical product is greatly improved.
In the design node configuration method for the configurable design of the mechanical product, design node flow information of the configurable design project stored in the design flow database and design node parameter configuration models stored in the calculation model database are all pre-manufactured and then stored, and the design node flow information of a new configurable design project and the new calculation model database can be respectively updated and stored in the design flow database and the calculation model database, that is, the design flow database and the calculation model database can be respectively stored with the design node flow information of a plurality of different configurable design projects and a plurality of different design node parameter configuration models for use in the design node configuration.
In addition, the design node configuration data in the design node database can record design input parameters required by executing the design node configuration processing and design characteristic parameters output by the design node configuration processing, and can also be used for recording the type information of the design node; the various design node parameter configuration models in the calculation model database can be used for designing and recording additional data information such as the type of the design node, the design input parameter information and the design characteristic parameter information which are respectively matched with the design node parameter configuration models, and the like besides the model data; this information may be used as some of the underlying data to be provided to the computer program call and process responsible for performing the design node configuration; and, for the design input parameter information and the specific parameter information of the design characteristic parameters, the parameter number, the parameter symbol, the parameter source, the parameter description and the parameter number may be included Primary information of value, etc.; wherein the parameter sequence number is the sequence number of the parameter required by the current node; parameter symbols are symbols representing parameters; the source of the parameters, i.e. the source of the values of all the parameters of the node, includes three sources: design parameters manually input from a designer, design parameters pre-configured in a design node parameter configuration model matched with a current design node, and design characteristic parameters of a last design node in sequence in a current to-be-processed configurable design project flow; the parameter value is the value of the current node parameter; the parameter description is information such as scientific text explanation and unit description of the parameter. For example, as shown in FIG. 2, when configuring a node of a module at the inlet of an impeller, the parameters have P 0 ，T 0 ，m，r 1h /r 1s ，n，B 1 Etc., wherein the parameter information defines as: parameter numbers and corresponding symbols; the corresponding parameter descriptions are: p (P) 0 Representing the total thermodynamic pressure of the impeller inlet, T 0 Represents the total thermodynamic temperature of the impeller inlet, m represents the thermodynamic mass flow of the impeller inlet, and r 1h /r 1s Represents the radius ratio of the hub to the rim, n represents the rotating speed, B 1 Representing a blocking factor; the total impeller inlet thermodynamic pressure, total impeller inlet thermodynamic temperature, impeller inlet thermodynamic mass flow, hub-to-rim radius ratio and the like in the parameter sources are all from the design characteristic parameter output of a preset design node and a previous design node in the design node parameter configuration model, and the blocking factors and the like are input from the outside manually.
Of course, considering the variety of data information possibly stored in the calculation model database, the calculation model database can be designed into a macro database, wherein the macro database comprises a plurality of different sub-databases, and the different sub-databases are used for respectively storing different kinds of data information, so that the construction and the search query of the data are facilitated.
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
In the design node configuration method of the machine product configurable design of the present invention, as shown in fig. 3, a computer program for executing the design node configuration may be designed to execute the process as follows:
1) Obtaining the sequence of each design node in the current to-be-processed configurable design project flow from a design flow database; sequentially reading one design node as the current design node, and entering step 2).
Typically, when a configurable design project to be processed is first processed, the design node read in sequence is the first design node in the project. In addition, the configuration completion state of the design characteristic parameters of each design node in the configurable design project to be processed can be recorded by the design computer program, and the configuration completion result data of each design node in the configurable design project to be processed can be recorded together; meanwhile, the mode that the computer program can be designed to sequentially read one design node as the current design node is to sequentially read the design node which is not completed in configuration of the forefront design characteristic parameter in the configurable design project to be processed at present as the current design node. Therefore, in the process of processing the configurable design project, a designer can be allowed to withdraw from the work halfway and then return to the design project, and the computer program can sequentially read the design node which is not completed in the configuration of the forefront design characteristic parameter in the current configurable design project to be processed, so that the designer can continuously complete the subsequent configuration work of the design node, and the convenience of the work is improved. 2) And obtaining the design input parameters of the current design node.
The design input parameters obtained here may be design parameters manually input from a designer, or/and design parameters pre-configured in a design node parameter configuration model matched with the current design node, or/and design feature parameters from a sequentially previous design node in the current configurable design project flow to be processed. For example, when configuring a node of a module at the inlet of an impeller, the parameter is P 0 ，T 0 ，m，r 1h /r 1s ，n，B 1 Etc., wherein the parameter information defines as: parameters (parameters)Numbering and corresponding symbols; the corresponding parameter descriptions are: p (P) 0 Representing the total thermodynamic pressure of the impeller inlet, T 0 Represents the total thermodynamic temperature of the impeller inlet, m represents the thermodynamic mass flow of the impeller inlet, and r 1h /r 1s Represents the radius ratio of the hub to the rim, n represents the rotating speed, B 1 Representing a blocking factor; the total impeller inlet thermodynamic pressure, total impeller inlet thermodynamic temperature, impeller inlet thermodynamic mass flow, hub-to-rim radius ratio and the like in the parameter sources are all from the design characteristic parameter output of a preset design node and a previous design node in the design node parameter configuration model, and the blocking factors and the like are input from the outside manually.
3) Reading design node configuration data of the current design node from a design flow database, retrieving a design node parameter configuration model matched with the design node configuration data of the current design node from a calculation model database, taking the design input parameters as input of the matched design node parameter configuration model, and calculating to obtain parameter values of design characteristic parameters in the current design node.
Specifically, as an optimization design scheme, the specific step of retrieving the design node parameter configuration model matched with the current design node from the calculation model database can be designed as follows:
3.1 According to the design node configuration data of the current design node, confirming the type of the design node to which the current design node belongs, and then screening all design node parameter configuration models which can be adapted to the type of the design node to which the current design node belongs from a calculation model database.
3.2 Selecting one design node parameter configuration model from the design node parameter configuration models screened in the step 3.1).
3.3 Judging whether the design input parameter information and the design characteristic parameter which are adapted in the design node parameter configuration model selected in the step 3.2) are consistent with the design input parameter and the design characteristic parameter of the current design node; if yes, go to step 3.4); otherwise, go back to step 3.2).
3.4 And 3.2) taking the design node parameter configuration model selected in the step 3.2) as a design node parameter configuration model matched with the current design node.
Therefore, the matching and calling processing of the design node parameter configuration model of the current design node can be completed by means of the computer program through judging the type of the design node and the corresponding configuration parameter double information in the design node parameter configuration model.
Of course, if working in the face of a completely new design node configuration, there may be cases where the matching design node parameter configuration model cannot be recalled in the calculation model database. In this regard, the design step 3.5) may also be in the specific step of the computer program retrieving from the calculation model database a design node parameter configuration model that matches the current design node:
3.5 If all the design node parameter configuration models screened in the traversing judging step 3.1) cannot be matched with the current design node, a new design node parameter configuration model matched with the current design node is created, updated and stored in a calculation model database, and the new design node parameter configuration model is used for calling the design node parameter configuration model matched with the current design node. Therefore, the real-time modification, editing and updating of the design node parameter configuration model can be realized, the need of modifying or secondarily developing the bottom source code by a designer like the existing design node configuration is eliminated, and meanwhile, the new design node parameter configuration model can be synchronously stored in a calculation model database, so that the subsequent query, call and modification are convenient.
In addition, considering that there is a problem of accumulated errors that easily exist between different design links and that allow machining tolerances, it is also necessary to consider how to alleviate and avoid the problem of accumulated errors in the process design of calculating the parameter values of the design feature parameters in the current design node. In view of this, as an optimization design scheme, in a design node where design error accumulation is easy, a parameter value calculation link of a design feature parameter of the design node can be designed to adopt a mode of performing multipoint calculation and multipoint value selection in a value-available interval and performing optimization screening to obtain the best value, so as to reduce the parameter value error of a single design node as much as possible, thereby obtaining the effect of finally reducing the accumulated error. For this reason, in order to implement the processing of multipoint value taking and optimizing screening according to the demand for different design nodes, in the design node configuration data in the design node database, the repeated calculation demand and the repeated calculation control parameter of the design node can be designed and recorded; the repeated calculation requirement of the design node is used for indicating whether the design node needs to obtain a plurality of alternative parameter value calculation results through multiple times of calculation to select an optimal value; the repeated calculation control parameters of the design node are used for indicating the input parameter value interval and the value step length which are corresponding to the need of obtaining the optimal parameter when the repeated calculation needs exist, the termination condition for terminating the parameter value calculation, and the optimal design value screening rule. Accordingly, the specific step of calculating the parameter values of the design feature parameters in the current design node may be designed as:
3.a) judging whether the current design node has repeated calculation requirements according to the design node configuration data of the current design node; if yes, go to step 3.b); otherwise, directly calculating the parameter value of the design characteristic parameter for a single time, and executing the step 3. D).
3.b) obtaining repeated calculation control parameters of the current design node according to the design node configuration data of the current design node; then according to the setting of the repeated calculation control parameters, using a design node parameter configuration model matched with the current design node, respectively inputting the design input parameters into the design node parameter configuration model according to the value interval and the value step length set by the repeated calculation control parameters, and respectively calculating for a plurality of times to obtain a plurality of alternative parameter value calculation results until reaching the termination condition of termination parameter value calculation set by the repeated calculation control parameters; step 3.c) is performed.
For example, in calculating the inlet node on a particular impeller component, after the first calculation, the ratio of node to Mach number at the rim, M a1s Is determined by the size of M a1s When the flow rate is more than 1, the local range of the impeller rim can cause the agitation, thereby causing unreasonable design; if the received input parameter is B 1 A value of 0.97, designPersonnel need to obtain r 1h /r 1s The optimal value between the intervals of 0.3 and 0.4 is selected to be 0.001, and the system can calculate the cycle times of (0.4-0.3)/0.001+1=101 times. r is (r) 1h /r 1s Sequentially taking values from 0.3 to 0.4 according to step sizes, and then taking the values into a calculation formula to calculate, if M obtained is found in the circulation process a1s The value is already greater than 1 and the termination condition is reached, the iterative computation process is terminated early and then jumps to step 3.c).
3.c) according to the optimal design value screening rule set by the repeated calculation control parameters of the current design node, screening out the parameter values meeting the optimal design value screening rule from the alternative parameter value calculation results, and taking the parameter values as the parameter values of the design characteristic parameters. The optimal design value screening rule may be designed according to different screening rules of different specific application scenarios.
D) outputting the parameter values of the design feature parameters in the current design node.
Through the parameter value calculation flow of the design characteristic parameters, whether the parameter is required to be calculated singly or is required to be calculated preferentially after a plurality of times according to the repeated calculation requirement conditions of different design nodes, so that in the design nodes with easy design error accumulation, the parameter value calculation of the design characteristic parameters adopts the mode of carrying out multipoint calculation and multipoint value calculation in a value-available interval and optimizing and screening the optimal value, and the parameter value error of a single design node is reduced as much as possible, so as to achieve the aim of reducing the accumulated error of a plurality of design nodes.
4) Judging whether a next design node in sequence exists in the current configurable design project flow to be processed or not; if so, the design characteristic parameters of the current design node are exported to the design input parameters of the next design node, and the step 5) is executed; otherwise, the jump goes to step 6).
In step 4), determining whether there is a specific mode of the next design node in sequence in the current configurable design project flow to be processed may be determined sequentially according to each design node in the current configurable design project flow to be processed; or, node branch information recorded with the design node can be designed in the design node configuration data stored in the design node database, and the node branch information of the design node is used for indicating the next node information of the design node in the design project flow where the design node is located, so that in the step 4), whether the next design node in sequence exists in the current to-be-processed configurable design project flow can be determined according to the node branch information of the current design node.
5) And (2) taking the next design node as a new current design node, and returning to the step (2).
The processing links in steps 4) and 5) are to facilitate the determination of the next design node. For example, the calculation result obtained above is 0.3.ltoreq.r 1h /r 1s When less than 0.35, then connecting to node B, calculating r 1h Is a value of (2); if r is more than or equal to 0.35 1h /r 1s If the value is less than or equal to 0.4, connecting to a node C, and calculating r firstly 1s And then jump to step 2) to continue the configuration work of the next design node.
6) And completing the configuration processing of the design characteristic parameters of each design node in the current to-be-processed configurable design project flow. That is, the design node configuration work of the configurable design project currently to be processed is completed entirely.
In summary, in the design node configuration method for configurable design of a mechanical product, as the design flow database storing design node flow information of configurable design items, the design node database storing design node configuration data and the calculation model database storing design node parameter configuration models are arranged in advance, the design node configuration is executed by arranging a computer program, and the sequence of each design node in the configurable design item flow is automatically read from the design flow database by the computer program, the problem of connection coordination relation among design nodes is not required to be handled by a designer, and the processing complexity is simplified; in addition, the design node parameter configuration model used for the design node is matched and called from the calculation model database by the computer program according to the design node configuration data of the design node, so that the design node parameter configuration model matched by the design nodes of the same type can be used in different configurable design projects in an adapting way, and the problem that a plurality of design nodes of the same type need to be repeatedly developed when being used in different configurable design projects is avoided. In addition, the design node parameter configuration model of the calculation model database in the design node configuration method can be modified, edited and updated in real time, so that a designer is not required to modify the bottom source code or secondarily develop the bottom source code like the existing design node configuration, and meanwhile, a new design node parameter configuration model can be synchronously stored in the calculation model database, so that the later inquiry, calling and modification are convenient, and the calling of the design node parameter configuration model is more abundant and flexible; in addition, through the optimal design of the parameter value calculation flow of the design characteristic parameters, whether the single calculation value of the parameters is required to be executed or the preferred value is required to be calculated for multiple times can be judged according to the repeated calculation requirement conditions of different design nodes, so that in the design nodes with easy design error accumulation, the parameter value calculation of the design characteristic parameters adopts the mode of carrying out multi-point calculation and multi-point value calculation in a value-available interval and carrying out optimizing screening to the optimal value, thereby reducing the parameter value error of a single design node as much as possible and achieving the purpose of reducing the accumulated error of multiple design nodes. Therefore, the design node configuration method for the configurable design of the mechanical product greatly improves the convenience of the configuration work of the design nodes in the configurable design of the mechanical product, is beneficial to reducing the design cost, can assist in optimizing the design parameters, and has good technical application prospect.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A design node configuration method for configurable design of a mechanical product is characterized in that a design flow database storing design node flow information of configurable design projects, a design node database storing design node configuration data and a calculation model database storing a design node parameter configuration model are arranged in advance; the configurable design project flow is used for recording all design nodes which are experienced according to the flow needs in the configurable design of the mechanical product; the design node configuration data is used for recording design input parameters required by executing the design node configuration processing and design characteristic parameters output by the design node configuration data; the design node parameter configuration model is used for indicating a function calculation relation between design characteristic parameters and design input parameters in the design node; then arranging a computer program to execute design node configuration, reading the sequence of each design node in the configurable design project flow from a design flow database, respectively reading the respective design node configuration data of each design node from the design flow database, respectively calling the design node parameter configuration model matched with the respective design node configuration data of each design node from a calculation model database to calculate and obtain the parameter value of the design characteristic parameter of the corresponding design node, thereby sequentially determining the parameter value of the design characteristic parameter of each design node according to the flow sequence in the design project flow, and completing the configuration processing of the design characteristic parameter of each design node in the design project flow; the design node configuration data is also used for recording the type information of the design node; the design node parameter configuration model is also recorded with the type of the design node which is matched with the design node parameter configuration model, and the information of the design input parameters and the information of the design characteristic parameters which are matched with the design node parameter configuration model;
Wherein the computer program for executing the design node configuration performs the process as follows:
1) Obtaining the sequence of each design node in the current to-be-processed configurable design project flow from a design flow database; sequentially reading one design node as a current design node, and entering step 2);
2) Obtaining design input parameters of a current design node;
3) Reading design node configuration data of a current design node from a design flow database, retrieving a design node parameter configuration model matched with the design node configuration data of the current design node from a calculation model database, taking the design input parameters as input of the matched design node parameter configuration model, and calculating to obtain parameter values of design characteristic parameters in the current design node;
the specific steps of retrieving the design node parameter configuration model matched with the design node configuration data of the current design node from the calculation model database are as follows:
3.1 Confirming the type of the design node to which the current design node belongs according to the design node configuration data of the current design node, and then screening all design node parameter configuration models which can be adapted to the type of the design node to which the current design node belongs from a calculation model database;
3.2 Selecting a design node parameter configuration model from the design node parameter configuration models screened in the step 3.1);
3.3 Judging whether the design input parameter information and the design characteristic parameter which are adapted in the design node parameter configuration model selected in the step 3.2) are consistent with the design input parameter and the design characteristic parameter of the current design node; if yes, go to step 3.4); otherwise, returning to the step 3.2);
3.4 Taking the design node parameter configuration model selected in the step 3.2) as a design node parameter configuration model matched with the current design node;
4) Judging whether a next design node in sequence exists in the current configurable design project flow to be processed or not; if so, the design characteristic parameters of the current design node are exported to the design input parameters of the next design node, and the step 5) is executed; if not, jumping to execute the step 6);
5) Taking the next design node as a new current design node, and returning to the execution step 2);
6) And completing the configuration processing of the design characteristic parameters of each design node in the current to-be-processed configurable design project flow.
2. The method for configuring design nodes for configurable design of a machine product according to claim 1, wherein the configuration completion status of design feature parameters of each design node is recorded in the current configurable design project to be processed;
In the step 1), one design node is sequentially read as the current design node, that is, the design node which is not yet completed in configuration of the forefront design feature parameter in the configurable design project to be processed currently is sequentially read as the current design node.
3. The method according to claim 1, wherein the design input parameters of the current design node obtained in the step 2) are design parameters input from the outside, or/and design parameters pre-configured in a design node parameter configuration model matched with the current design node, or/and design feature parameters from a design node in sequence last in the current process of the configurable design project to be processed.
4. The method according to claim 1, further comprising step 3.5) if all the design node parameter configuration models screened in step 3.1) are not matched with the current design node, creating a new design node parameter configuration model matched with the current design node, updating and storing the new design node parameter configuration model in the calculation model database, and calling the design node parameter configuration model matched with the current design node.
5. The method of claim 1, wherein the design node configuration data is further used to record the repeated computation requirements and the repeated computation control parameters of the design node; the repeated calculation requirement of the design node is used for indicating whether the design node needs to obtain a plurality of alternative parameter value calculation results through multiple times of calculation to select an optimal value; the repeated calculation control parameters of the design node are used for indicating the input parameter value interval and value step length which are corresponding to the requirement of obtaining the optimal parameter when the repeated calculation requirement exists, the termination condition for terminating the parameter value calculation and the optimal design value screening rule.
6. The method for configuring design nodes for configurable design of a machine product according to claim 5, wherein in the step 3), the specific step of calculating parameter values of design feature parameters in the current design node is:
3.a) judging whether the current design node has repeated calculation requirements according to the design node configuration data of the current design node; if yes, go to step 3.b); otherwise, directly calculating the parameter value of the design characteristic parameter for a single time, and executing the step 3. D);
3.b) obtaining repeated calculation control parameters of the current design node according to the design node configuration data of the current design node; then according to the setting of the repeated calculation control parameters, using a design node parameter configuration model matched with the current design node, respectively inputting the design input parameters into the design node parameter configuration model according to the value interval and the value step length set by the repeated calculation control parameters, and respectively calculating for a plurality of times to obtain a plurality of alternative parameter value calculation results until reaching the termination condition of termination parameter value calculation set by the repeated calculation control parameters; executing step 3.c);
3.c) screening out the parameter values meeting the optimal design value screening rule from the alternative parameter value calculation results according to the optimal design value screening rule set by the repeated calculation control parameters of the current design node, and taking the parameter values as the parameter values of the design characteristic parameters;
d) outputting the parameter values of the design feature parameters in the current design node.
7. The method of configuring design nodes for a configurable design of a machine product of claim 1, wherein the design node configuration data is further used to record node branching information of the design nodes; the node branch information of the design node is used for indicating the next node information of the design node in the design project flow where the design node is located;
In the step 4), the specific mode of judging whether the next design node in sequence exists in the current to-be-processed configurable design project flow is determined according to the sequence of each design node in the current to-be-processed configurable design project flow or according to the node branch information of the current design node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539301.3A CN112633832B (en) | 2020-12-23 | 2020-12-23 | Design node configuration method for configurable design of mechanical product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539301.3A CN112633832B (en) | 2020-12-23 | 2020-12-23 | Design node configuration method for configurable design of mechanical product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112633832A CN112633832A (en) | 2021-04-09 |
| CN112633832B true CN112633832B (en) | 2023-12-05 |
Family
ID=75321674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011539301.3A Active CN112633832B (en) | 2020-12-23 | 2020-12-23 | Design node configuration method for configurable design of mechanical product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112633832B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107451336A (en) * | 2017-07-07 | 2017-12-08 | 汕头大学 | A kind of robust design method for being used to optimize properties of product change border |
| CN107590319A (en) * | 2017-08-23 | 2018-01-16 | 南京理工大学 | A kind of knowledge modeling method and system for engineering goods scheme Computer Aided Design |
-
2020
- 2020-12-23 CN CN202011539301.3A patent/CN112633832B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107451336A (en) * | 2017-07-07 | 2017-12-08 | 汕头大学 | A kind of robust design method for being used to optimize properties of product change border |
| CN107590319A (en) * | 2017-08-23 | 2018-01-16 | 南京理工大学 | A kind of knowledge modeling method and system for engineering goods scheme Computer Aided Design |
Non-Patent Citations (1)
| Title |
|---|
| 基于三维模型的产品模块化配置方法;张萌;李国喜;龚京忠;吴宝中;邓平;;计算机集成制造系统(11);18-28 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112633832A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Heer et al. | Predictive Interaction for Data Transformation. | |
| JPH02281342A (en) | Method and tool for evaluating design | |
| CN113283613B (en) | Deep learning model generation method, optimization method, device, equipment and medium | |
| CN108228187B (en) | Global optimization method of numerical program | |
| JP6694447B2 (en) | Big data calculation method and system, program, and recording medium | |
| CN111984256A (en) | Cloud native architecture-based low-code application flow system and operation method | |
| Liu | Fast industrial product design method and its application based on 3D CAD system | |
| CN116244333A (en) | Database query performance prediction method and system based on cost factor calibration | |
| CN112633832B (en) | Design node configuration method for configurable design of mechanical product | |
| CN115469860B (en) | Method and system for automatically generating demand-to-software field model based on instruction set | |
| CN117349319A (en) | Database query optimization method based on deep reinforcement learning | |
| CN115146485A (en) | Radio frequency link simulation method based on GPU acceleration | |
| JPH0850554A (en) | Method and device for automatically generating operation model of processor and test instruction sequence for logic verification | |
| CN115757481A (en) | Data migration method, device, equipment and storage medium | |
| CN110471646B (en) | Method for realizing complex program logic through manual configuration | |
| CN114841106A (en) | Integrated circuit optimization method and system based on rule-guided genetic algorithm | |
| CN110083859B (en) | Quick automatic design method and system | |
| Bruno et al. | Rapid prototyping of control systems using high level Petri nets | |
| CN116383094B (en) | Test case library construction method, device, equipment and storage medium | |
| US11640154B2 (en) | Graph display device, graph display method, and recording medium for associating and ascertaining dependency relations among device variables | |
| TWI801836B (en) | Method for transforming and optimizing codes between different programing languages | |
| JP2002312167A (en) | Program for making computer calculate value of variable, compile program, variable value determining method, and program generating method | |
| Margoor et al. | Improving join reordering for large scale distributed computing | |
| CN114035767A (en) | TEC-XP16 combined logic controller instruction design method | |
| CN114238072A (en) | HIL requirement design method, HIL requirement design device, computer equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |