CN107194609A - A kind of product design system and method - Google Patents

A kind of product design system and method Download PDF

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CN107194609A
CN107194609A CN201710452636.3A CN201710452636A CN107194609A CN 107194609 A CN107194609 A CN 107194609A CN 201710452636 A CN201710452636 A CN 201710452636A CN 107194609 A CN107194609 A CN 107194609A
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template
data
decision template
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CN107194609B (en
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明振军
阎艳
王国新
韩海荣
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Beijing Institute of Technology BIT
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Abstract

The invention discloses a kind of product design system and method, including decision problem input block, database, decision template encapsulation unit, decision template storehouse, consistency check unit, decision template execution unit, analysis of design scheme unit, design output unit;Decision problem input block obtains the problem of user inputs information;Data database storing;Decision template encapsulation unit selects data, and encapsulates data as decision template;Decision template library storage and administrative decision template;Consistency check unit carries out consistency check to the data encapsulated in decision template;Decision template execution unit is solved to the decision template for meeting uniformity, generates design;Analysis of design scheme unit is analyzed design, obtains optimization design scheme;Design output unit exports optimization design scheme.Using the system or method, enterprise can be helped to obtain more fully DECISION KNOWLEDGE, improve design efficiency, meet demand of the enterprise to different product.

Description

A kind of product design system and method
Technical field
The present invention relates to product design field, more particularly to a kind of product design system and method.
Background technology
Changeable market environment requires that enterprise can quickly design the high-quality of the demand of satisfaction with cost as small as possible Product, with the status that got the mastery in competition.Product design is one by a variety of abatement processes that may be solved to last solution, decision-making It is the key factor for promoting the digestion process.Therefore, design decision process is accelerated to shortening product design cycle, enhancing enterprise core Heart competitiveness plays an important roll.
Exploitation computer aided decision system is the effective way for accelerating product Design Decision Making process.At present, applied to production The computer aided decision system of product design field is broadly divided into two categories below:
(1) product design system of knowledge based management.Such notifications knows what storehouse was related to product design process excessively All kinds of knowledge such as document, calculation formula, product model are organized and managed, and it is provided when designer is engaged in design objective Required knowledge, aids in it to carry out decision-making.The defect of this kind of system is embodied in:Knowledge fragmentation, for Computer Aided Design, personnel enter The knowledge of row decision-making typically exhibits fragmentation, it is impossible to provide comprehensive decision support;Knowledge in the nature static of knowledge, system is big Mostly descriptive static knowledge, it is for reference only, it can not quickly perform generation design result.
(2) Study on Product Design Expert System.Such system carries out knowledge Modeling for the design process of specific products, gives defeated After entering can automated reasoning go out design result, provide decision references for designer.Although such system is dynamic by solidification Design reasoning process carries out realizing high-speed decision, but its adaptability is poor, and reasoning process knowledge model depends on specific products, Tend not to provide decision support when product type changes.
In summary, existing CAD decision system lacks comprehensive, quick decision support means, and Lack the decision supporting capability towards wider scope Product Design Problems.
The content of the invention
It is an object of the invention to provide a kind of product design system and method, to help enterprise to obtain more fully decision-making Knowledge is inputted, and improves design efficiency, and meet demand of the enterprise to different product.
To achieve the above object, the invention provides following scheme:
A kind of product design system, including decision problem input block, database, decision template encapsulation unit, decision model Plate storehouse, consistency check unit, decision template execution unit, analysis of design scheme unit, design output unit;
The decision problem input block, for obtaining the problem of user inputs information;
The database, for data storage, the data include trade-off decision data and compromise decision data;
Decision template encapsulation unit, is encapsulated as determining for selecting the data in the database, and by the data chosen Plan template;
Decision template storehouse, for store and administrative decision template, the decision template include the trade-off decision template and The compromise decision template;
The data encapsulated in the decision template, according to the rule of consistency of data, are carried out one by consistency check unit The inspection of cause property;
Decision template execution unit, according to described problem information, is solved to the decision template for meeting uniformity, generation Design;
Analysis of design scheme unit, for analyzing the design, obtains the design relative to ginseng The sensitiveness of number change, and optimization design scheme is obtained according to the sensitiveness;
Design output unit, for exporting the optimization design scheme.
Optionally, the database includes trade-off decision module and compromise decision-making module;The trade-off decision module includes Select permeability information module, for storing and managing select permeability information data;Alternative module, for storing and managing choosing Select the alternative data of decision-making;Attribute module, for storing and managing the scheme attribute data in trade-off decision;Attribute weight Module, the relative weighting for storing and managing each attribute in trade-off decision;Many attribute evaluation modules, for storing and managing many The assessment data of individual properties affect trade-off decision relative weighting;The compromise module includes compromise problem information module, for depositing Storage and management compromise problem information data;Variable and parameter module, for storing and managing variable and parameter in compromise decision-making; Constraint and object module, for storing and managing constraint and target in compromise decision-making;Target Preference module, for storing and managing Manage the preference data to each design object in compromise decision-making.
Optionally, the design includes trade-off decision design and compromise decision-making design.
Optionally, the analysis of design scheme unit is used to carry out the trade-off decision design schemes ranking sensitivity Property analysis;Multiple target balance and design space visualization analysis are carried out to the compromise decision-making design.
A kind of product design method, including:
Obtain the problem of user inputs information;
Obtain the decision template that can solve the problem that described problem;The decision template is encapsulated by the data in database and formed;
Consistency check is carried out to the data encapsulated in the decision template of acquisition;
According to described problem, the decision template for meeting uniformity is solved, design is generated;
The design is analyzed, sensitiveness of the design relative to Parameters variation is obtained;
The design is estimated according to the sensitiveness, optimization design scheme is obtained;
Export the optimization design scheme.
Optionally, it is described to obtain the decision template that can solve the problem that described problem, specifically include:According to described problem, from institute State the decision template that retrieval in design decision ATL can solve the problem that described problem;If in the presence of can solve the problem that described in described problem Decision template, then judge whether to need to change the data encapsulated in the decision template;If desired change, then to the encapsulation Data are modified, and obtain amended decision template, the data encapsulated in the amended decision template are carried out consistent Property check;If need not change, the data encapsulated in the decision template for performing described pair of acquisition carry out consistency check; If in the absence of the decision template that can solve the problem that described problem, updating the data in the database, to described in after renewal certainly The data stored in database are packaged, and obtain new decision template, and the data encapsulated in the new decision template are entered Row consistency check.
Optionally, the data encapsulated in the decision template of described pair of acquisition carry out consistency check, specifically include:Root According to the rule of consistency of data, consistency check is carried out to the data encapsulated in the decision template, if the decision template is accorded with Rule of consistency is closed, then performs the described pair of decision template for meeting rule of consistency and solves, design is generated;
If the decision template does not meet rule of consistency, the data to not meeting rule of consistency in the decision template Modify, make amended data fit rule of consistency.
The beneficial effects of the invention are as follows:The system or method are integrated into by will be stored in knowledge point discrete in database In one template, the comprehensive, decision support of systematization is formd, enterprise can be helped to obtain more fully DECISION KNOWLEDGE defeated Enter, produce high-quality design;Decision template includes trade-off decision template and compromise decision template, both types of decision-making Independent of specific product or specific design problem, have a wide range of application, expansion capability it is strong, disclosure satisfy that enterprise to different productions The demand of product;Solution is calculated by carrying out decision-making automatically, design is quickly generated, shortens the design cycle, reduce design The complexity of Decision Problem Solving, can be greatly improved design efficiency;By analyzing the design, obtain described Design relative to Parameters variation sensitiveness, and according to the sensitiveness obtain optimization design scheme, substantially increase and set The confidence level of meter scheme.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is the structure chart of product design system of the present invention;
Fig. 2 is the encapsulating structure figure of decision template of the present invention;
Fig. 3 is some trade-off decision template encapsulation schematic diagram of the invention;
Fig. 4 is some compromise decision template encapsulation schematic diagram of the invention;
Fig. 5 is that some trade-off decision template of the invention performs solution and reprocessing analysis schematic diagram;
Fig. 6 is that some compromise decision template example of the invention performs solution and reprocessing analysis schematic diagram;
Fig. 7 is the flow chart of product design method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
It is an object of the invention to provide a kind of product design system and method, to help enterprise to obtain more fully decision-making Knowledge is inputted, and improves design efficiency, and meet demand of the enterprise to different product.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is further detailed explanation.
Fig. 1 is the structure chart of product design system of the present invention;Fig. 2 is the encapsulating structure figure of decision template of the present invention.
Specific embodiment, as shown in figure 1, product design system includes decision problem input block 1, database 2, decision model Plate encapsulation unit 3, decision template storehouse 4, consistency check unit 5, decision template execution unit 6, analysis of design scheme unit 7, Design output unit 8.
The decision problem input block 1, for obtaining the problem of user inputs information, problem information includes design pair As, design object, function description etc..
The database 2, for data storage, the data include trade-off decision data and compromise decision data.Such as Fig. 2 Shown, the database 2 includes trade-off decision module 21 and compromise decision-making module 22;The trade-off decision module 21 is used to store The trade-off decision data;The compromise decision-making module is used to store compromise decision data 22.
The trade-off decision module 21 includes select permeability information module 211, alternative module 212, attribute module 213rd, attribute weight module 214, many attribute evaluation modules 215.
Select permeability information module 211, for storing and managing select permeability information data.
Alternative module 212, the alternative data for storing and managing trade-off decision;Alternative module 212 Tissue, including title, description, image, scheme Attribute Value are carried out according to the form shown in table 1.Scheme Attribute Value can have multiple, often Individual property value includes the upper bound, lower bound and probability distribution.Especially, the upper bound refers to the maximum of estimation, and lower bound refers to the minimum of estimation Value, probability distribution represents distribution situation of the actual value between bound, the uncertainty for describing attribute.
Table 1
Attribute module 213, for storing and managing the scheme attribute data in trade-off decision.Attribute module 213 presses the institute of table 2 The form shown carries out tissue, including title, description, unit, the upper bound, lower bound, preference direction, ideal value, the reasons why be considered, effect Use function.Particularly, preference direction refers to the expectation to attribute value in decision process, is divided into very big, minimum and close to certain number Three kinds of situations of value;Considered the reasons why refer to certain attribute in decision process be considered cause, often to Decision Making Effect compared with Big attribute can just be considered;Utility function is used to measure value of the alternative on a certain attribute, the utility function of scheme Value is bigger, its value is bigger, and utility function available functions model and its parameter are expressed.
Table 2
Attribute weight module 214, the relative weighting for storing and managing each attribute in trade-off decision;Attribute weight module 214 carry out tissue according to the form described in table 3, are the number lists of a N row.
Table 3
Many attribute evaluation modules 215, for storing the relative weighting with the multiple properties affect trade-off decisions of management assessment.It is many Attribute evaluation module 214 carries out tissue with the form shown in table 4, is a N × (2N-2) matrix.When wherein N represents decision-making The number of attributes of consideration, matrix has N rows 2N-2 row.As shown in table 3, in matrix close to two row represent a pair of equivalences, Element in row is each property value of scheme, and matrix has N-1 parity price schemes.Equivalence is manual construction before decision-making, Purpose is to determine the relative weighting of each attribute.Decision problem with N number of attribute, which needs to build N number of linear equality, can just solve The relative weighting of each attribute.In N number of linear equality, one is fixed asIt is 1, K to represent weight sumiRefer to i-th of category The weight of property.Remaining N-1 linear equation is determined by N-1 parity price schemes, and determination mode isWhereinWithRespectively property value of the pth parity price scheme in ith attribute, P is the index p=N-1 of equivalence.
Table 4
The compromise module 22 includes compromise problem information module 221, variable and parameter module 222, constraint and target mould Block 223, Target Preference module 224.
Compromise problem information module 221, for storing and managing compromise problem information data.
Variable and parameter module 222, for storing and managing variable and parameter in compromise decision-making;Variable and parameter module 222 carry out tissue, including title, description, type, symbol, unit, the upper bound, lower bound, initial value according to the form described in table 5.It is special Other, type belongs to parameter or variable for identifying some amount in compromise decision-making, if the amount is kept in compromise decision-making Constant is then parameter, is otherwise variable.Mark when symbol is used to express variable or parameter is used in formula, uses English alphabet (or monogram) is represented.
Table 5
Constraint and object module 223, for storing and managing constraint and target in compromise decision-making;Constraint and object module 223 according to described in table 6 form carry out tissue, including title, description, type, expression formula, linear/non-linear, value direction/ Polarity, border/desired value.Particularly, type be used for identify some functional expression be in compromise decision-making be used for express constraint or Target, is used to express constraint, otherwise for expressing target if the span of the functional expression is restricted;Expression formula is used for table Show the symbol representation of certain constraint or target, it is necessary to symbol in reference to variable/parameter module;Linear/non-linear is used for table It is linear or nonlinear up to certain constraint or goal expression;Value direction/polarity is used for the value side for expressing certain constraint To:Including " >=", "≤" and "=", or express the polarity of certain target:" maximization " and " minimum ";Border/desired value is used for The boundary value of certain constraint is expressed, or expresses the desired value of certain target.
Table 6
Target Preference module 224, for storing and managing the preference data in compromise decision-making to each design object.Target is inclined Good module 224 carries out tissue, including target, level and weight according to the form described in table 7.Particularly, level is used to express certain There can be multiple targets on the priority level that target is considered in compromise decision process, same level, level is higher to represent it Priority is higher, it will by limited satisfaction;Weight represents the relative weighting between multiple targets on a certain level, and it adds up Sum is 1.
Table 7
As shown in Fig. 2 the decision template encapsulation unit 3, for selecting the data in the database 2, and will selection Good data are encapsulated as decision template.
The decision template storehouse 4, includes the trade-off decision mould for storing with administrative decision template, the decision template Plate 41 and the compromise decision template 42.
The data encapsulated in the decision template, according to the rule of consistency of data, are entered by the consistency check unit 5 Row consistency check.Here, uniformity refers to that each module in template and its relation each other need to meet certain rule Then, the structure definition with template is consistent.For example, each attribute weight sum is necessary for 1 in attribute weight module 214, i.e.,Wherein KiRepresent ith attribute;The dividing value up and down of each parameter must is fulfilled in parameter and variable module 222:Xu =Xl, wherein XuFor the upper bound, XlFor lower bound.Described consistency check unit 5 is using RBR engine JESS (JavaExpert System Shell) realizes consistency check function, and implementation method is:Defined first according to the structure of template Determine rule of consistency, then JESS inference engines by the template in trade-off decision template 41 and compromise decision template 43 one by one Matched with rule of consistency, the example for being unsatisfactory for rule of consistency is fed back to user and informed by last JESS inference engines Its inconsistency where and modification method.Particularly, rule of consistency is entered using following production rule form Row definition:
(defrule MAIN::rule_6(object(is-a cDSPTemplate)(OBJECTy))
=>
(foreachx(slot-gety hasParameter)(if(neq(slot-getx lowerBound) (slot-getx upperBound))then(printouttWARNING_6crlf))))
CDSPTemplate represents compromise decision template in above rule, and hasParameter represents parameter module, LowerBound represents parameter lower bound, and upperBound represents the parameter upper bound, and the logic of regular expression is:When having in parameter module When the value of its upper bound of any example and lower bound is unequal, this inconsistency is just pushed to user and reminds it to enter by inference engine Row modification.
The decision template execution unit 6, according to described problem information, is asked the decision template for meeting uniformity Solution, generates design, and the design includes trade-off decision design and compromise decision-making design.
Trade-off decision template 41 carries out solving generation trade-off decision design according to mathematical modeling shown below.
It is given
Alternative collection
XiI=1 ..., n
It is determined that
Attribute
AiI=1 ..., m
Attribute-value pairs
Assess
Single attribute utility function
ui(x) i=1 ..., m
Federation properties utility function
U (x)=f (u1..., u (x)m(x))
Calculate
The expected utility of each scheme
E(U)iI=1 ..., n
Selection
The maximum alternative of expected utility
Contained in trade-off decision problem mathematical modeling " given ", " it is determined that ", " assessment ", " calculating " and " selection " five portions Point.Wherein, " given " and " it is determined that " two parts content is the information related to particular problem, in trade-off decision template 41 Encapsulation is completed, its excess-three part will be automatically performed by computer.Method Of Accomplishment is as follows:First according to the attribute evaluation matrix of table 4 In data solve the relative weighting K of each attributei, then calculate each scheme according to the data of utility function in table 2 Single attribute expected utility E (u)i, in KiWith E (u)iOn the basis of calculate the federation properties expected utility of each schemeFinally select federation properties expected utility E (U) highest scheme.
Compromise decision template 42 carries out solving generation compromise decision-making design according to mathematical modeling shown below.
It is given
One alternative to be optimized
Some parameters, boundary condition, constraint and design object etc.
Search
Design variable
XiI=1 ..., n
Deviation variables
Meet
Constraint (linear, non-linear)
Gi(X)=0;I=1 ..., p
Gi(X)≥0;I=p+l ..., p+q
Target (linear, non-linear)
Border
Minimize
Departure function
Compromise decision problem mathematical modeling contains " given ", " search ", " satisfaction ", " minimum " four parts.This four The parameter relevant with particular problem, variable, constraint, target and Target Preference are defined by table 5, table 6, table 7 in individual part And encapsulation has been completed in compromise decision template 42, packaged template instances are carried out solution needs " search ", " satisfaction ", " minimum " three parts are carried out simultaneously, are realized and solved using goal programming algorithm.
The analysis of design scheme unit 7, for analyzing the design, obtains the phase of the design Optimization design scheme is obtained for the sensitiveness of Parameters variation, and according to the sensitiveness.To the trade-off decision design Schemes ranking sensitivity analysis is carried out, i.e., it is larger whether the sequence by analyzing design can produce with the change of parameter Fluctuation, so as to strengthen the confidence level of the design ranked the first.Multiple target balance is carried out to the compromise decision-making design And design space visualization is analyzed, multiple target trade-off analysis is mainly inclined to final target by analyzing different weights combinations The influence that difference is caused, it is determined that least sensitive weight combination.Design space visualization in visual mode mainly by being showed A certain weight combines position of the corresponding best design value in design space, helps enterprise to understand best design Distribution situation, to carry out rational decision making.
The design output unit 8, for exporting the optimization design scheme.
Fig. 3 is some trade-off decision template encapsulation schematic diagram of the invention;Fig. 4 is some compromise decision template encapsulation of the invention Schematic diagram;Fig. 5 is that some trade-off decision template of the invention performs solution and reprocessing analysis schematic diagram;Fig. 6 for the present invention certain Individual compromise decision template example, which is performed, to be solved and reprocessing analysis schematic diagram.
As shown in figure 3, Fig. 3 shows is encapsulated as choosing by light switch cover plate rapid prototyping material-process choice problem Select the interface schematic diagram of decision template.6 panels, respectively essential information, alternative, attribute, many attributes are had in interface Equivalence is assessed and attribute weight.Wherein essential information Panel User needs to fill in instance name and problem description, and user can basis The specifying information of the rapid prototyping material-process choice problem is filled in, and the effect of these information is to facilitate designer couple Understanding, retrieval and the reuse of the template instances.Alternative panel needs user to set the alternative of the trade-off decision problem, These schemes can be the scheme that existing alternative or user newly create in database 2, double-click the bar in panel The details of mesh editable alternative.Properties palette needs the scheme category that user sets the trade-off decision problem to be considered Property, these attributes equally may come from the attribute that existing attribute or user newly create in database 2, double-click face The details of entry editable attribute in plate.Many Attribute Equivalences, which assess panel, needs user to set N-1 parity price schemes, its Property value is as the basic data for solving attribute weight, and the present embodiment has 6 attributes, therefore is provided with 5 parity price schemes.Attribute In weight panel the weight of each attribute many Attribute Equivalences assess panel in data fill in finish after automatically generate.The light switch It will be stored in trade-off decision template 41 after cover plate rapid prototyping material-process choice problem is packaged.
Fig. 4 shows that the multiple target compromise decision problem of design of pressure vessels is encapsulated as the interface of compromise decision template and shown It is intended to.6 panels, respectively essential information, variable, parameter, constraint, target, preference are had in interface.With trade-off decision template The package interface of example is similar, and essential information Panel User is filled according to the specifying information of compromise decision problem, and remaining is each The information of panel can be chosen from database 2, also can voluntarily be created by user.The multiple target of the Voltage force Vessel Design is appropriate It will be stored in compromise decision template 42 after association's decision problem is packaged.
The panels show of Fig. 5 top halfs is packaged and issued trade-off decision template, including electric light The material of switch cover plate-process choice template, gun barrel section selection template, barrel materials selection template.User's selection wherein one Individual template (the present embodiment have selected material-process choice template of light switch cover plate), then clicks on " RUN " button, system Ejection one shows the window of the example relevant parameter, and window is divided into " each scheme Attribute Value " and " attribute weight " two parts, uses Family can also now modify to these numerical value, and system carries out performing solution automatically to the example after modification.As a result under Fig. 5 Shown in " each scheme expected utility " panel and " scheme ranking " block diagram of half part, what is ranked the first is to select Design.
The panels show of Fig. 6 top halfs is packaged and announced compromise decision template, and pressure vessel is set Count template, Coiled Spring Design template, linear aluminum alloy materials design template, data center heat dissipation system design example.User One of template (the present embodiment have selected design of pressure vessels template) is selected, " RUN " button, system ejection is then clicked on One show the example relevant parameter window, window is divided into " variable ", " parameter " and " target weight " three part, and user is now These numerical value can also be modified, system carries out automatic calculation to the example after modification.As a result in Fig. 6 the latter half Shown in " variate-value " panel and " desired value " panel, these " variate-values " and " desired value " are final design.
Fig. 7 is the flow chart of the product design method of the present invention, as shown in fig. 7, utilizing the product described in above-described embodiment 1 The method that design system carries out product design comprises the following steps:
S701, obtains the problem of user inputs information;
S702, obtains the decision template that can solve the problem that described problem;
Specifically, the decision template is selected by decision template encapsulation unit 3 and the data in encapsulation of data storehouse 2 are formed; And the decision template is stored in decision template storehouse 4;
The data encapsulated in the decision template of acquisition are carried out consistency check by S703;
Specifically, rule of consistency of the consistency check unit 5 according to data, to the data encapsulated in the decision template Carry out consistency check;
S704, according to described problem, is solved to the decision template for meeting uniformity, generates design;
S705, is analyzed the design, obtains sensitiveness of the design relative to Parameters variation;
S706, is estimated according to the sensitiveness to the design, obtains optimization design scheme;
S707, exports the optimization design scheme.
Step S702 is specifically included, according to described problem, and retrieval can solve the problem that described problem from the decision template storehouse 4 Decision template;
If in the presence of the decision template that can solve the problem that described problem, judging whether to need to change in the decision template The data of encapsulation;If desired change, then the data to the encapsulation are modified, amended decision template is obtained, to described The data encapsulated in amended decision template carry out consistency check;If need not change, the institute of described pair of acquisition is performed State the data encapsulated in decision template and carry out consistency check;
If in the absence of the decision template that can solve the problem that described problem, the data in the database 2 are updated, after renewal The database 2 in the data that store be packaged, new decision template is obtained, to what is encapsulated in the new decision template Data carry out consistency check.
Step S703 specifically includes the rule of consistency according to data, and one is carried out to the data encapsulated in the decision template The inspection of cause property, if the decision template meets rule of consistency, performs the described pair of decision model for meeting rule of consistency Plate is solved, and generates design;
If the decision template does not meet rule of consistency, the data to not meeting rule of consistency in the decision template Modify, make amended data fit rule of consistency.
The present invention can help enterprise to obtain more fully DECISION KNOWLEDGE by the said goods design system and design method Input, improves design efficiency, and meet demand of the enterprise to different product.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said The bright method and its core concept for being only intended to help to understand the present invention;Simultaneously for those of ordinary skill in the art, foundation The thought of the present invention, will change in specific embodiments and applications.In summary, this specification content is not It is interpreted as limitation of the present invention.

Claims (7)

1. a kind of product design system, it is characterised in that single including decision problem input block, database, decision template encapsulation Member, decision template storehouse, consistency check unit, decision template execution unit, analysis of design scheme unit, design output are single Member;
The decision problem input block, for obtaining the problem of user inputs information;
The database, for data storage, the data include trade-off decision data and compromise decision data;
The decision template encapsulation unit, is encapsulated as determining for selecting the data in the database, and by the data chosen Plan template;
The decision template storehouse, for store and administrative decision template, the decision template include the trade-off decision template and The compromise decision template;
The data encapsulated in the decision template, according to the rule of consistency of data, are carried out one by the consistency check unit The inspection of cause property;
The decision template execution unit, according to described problem information, is solved to the decision template for meeting uniformity, generation Design;
The analysis of design scheme unit, for analyzing the design, obtains design and becomes relative to parameter The sensitiveness of change, and optimization design scheme is obtained according to the sensitiveness;
The design output unit, for exporting the optimization design scheme.
2. system according to claim 1, it is characterised in that the database includes trade-off decision module and compromise decision-making Module;The trade-off decision module is used to store the trade-off decision data;The compromise decision-making module is determined for storing compromise Plan data;
The trade-off decision module includes select permeability information module, for storing and managing select permeability information data;Alternatively Scheme module, the alternative data for storing and managing trade-off decision;Attribute module, for storing and managing trade-off decision In scheme attribute data;Attribute weight module, the relative weighting for storing and managing each attribute in trade-off decision;Many attributes Evaluation module, the assessment data for storing and managing multiple properties affect trade-off decision relative weightings;
The compromise module includes compromise problem information module, for storing and managing compromise problem information data;Variable and ginseng Digital-to-analogue block, for storing and managing variable and parameter in compromise decision-making;Constraint and object module, for storing and managing compromise Constraint and target in decision-making;Target Preference module, for storing and managing the preference number in compromise decision-making to each design object According to.
3. system according to claim 1, it is characterised in that the design includes trade-off decision design and appropriate Assist decision-making design.
4. system according to claim 1, it is characterised in that the analysis of design scheme unit is used to determine to the selection Plan design carries out schemes ranking sensitivity analysis;Multiple target balance and design are carried out to the compromise decision-making design Spatial visualization is analyzed.
5. a kind of product design method, it is characterised in that methods described includes:
Obtain the problem of user inputs information;
Obtain the decision template that can solve the problem that described problem;The decision template is encapsulated by the data in database and formed;
Consistency check is carried out to the data encapsulated in the decision template of acquisition;
According to described problem, the decision template for meeting uniformity is solved, design is generated;
The design is analyzed, sensitiveness of the design relative to Parameters variation is obtained;
The design is estimated according to the sensitiveness, optimization design scheme is obtained;
Export the optimization design scheme.
6. design method according to claim 5, it is characterised in that the acquisition can solve the problem that the decision model of described problem Plate, is specifically included:
According to described problem, retrieval can solve the problem that the decision template of described problem from the design decision ATL;
If in the presence of the decision template that can solve the problem that described problem, judging whether to need to change encapsulation in the decision template Data;If desired change, then the data to the encapsulation are modified, amended decision template is obtained, to the modification The data encapsulated in decision template afterwards carry out consistency check;If need not change, perform described pair of the described of acquisition and determine The data encapsulated in plan template carry out consistency check;
If in the absence of the decision template that can solve the problem that described problem, updating the data in the database, to the institute after renewal State the data stored in database to be packaged, obtain new decision template, to the data encapsulated in the new decision template Carry out consistency check.
7. design method according to claim 6, it is characterised in that encapsulated in the decision template of described pair of acquisition Data carry out consistency check, specifically include:
According to the rule of consistency of data, consistency check is carried out to the data encapsulated in the decision template, if the decision-making Template meets rule of consistency, then performs the described pair of decision template for meeting rule of consistency and solve, generation design Scheme;
If the decision template does not meet rule of consistency, the data that rule of consistency is not met in the decision template are carried out Modification, makes amended data fit rule of consistency.
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