CN107944184B - In conjunction with the Method of Conceptual Design of life system theory and FBS - Google Patents
In conjunction with the Method of Conceptual Design of life system theory and FBS Download PDFInfo
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Abstract
The invention discloses the Method of Conceptual Design of a kind of combination life system theory and FBS, this method is primarily based on life system theory and expresses FBS design element, carries out standardization expression to the function of product, behavior and structure respectively using the key subsystem of life system theory；Secondly to traditional FBS model reconstruction, FBS design cycle is rebuild on the basis of the FBS design element expression based on life system theory, the design problem that traditional FBS design cycle can not solve local deformation Yu locally innovate is compensated for, and checks that operation improves designing quality by increasing.This method is designed the expression of element and rebuilding for design cycle to FBS model using life system theory, forms the LST-FBS model with operability.The present invention with versatility and it is comprehensive on the basis of simultaneously there is exploitativeness and reliability, can support Variant Design and innovative design simultaneously, form standardization have can directiveness design cycle.
Description
Technical field
The present invention relates to a kind of conceptual design method, the product concept for being related to a kind of combination life system theory and FBS is set
Meter method.
Background technique
Conceptual design is in the early stage of product design, is very important in the design process.Research shows that the life of product
The cost in period 70% is determined in conceptual phase, at the same conceptual design at least have to the constraint of designer it is biggish
Innovative space best embodies the experience wisdom and creativeness of designer, it is considered to be most critical is most creative in design process
Stage.FBS (Function-Behavior-Structure) designs a model and is widely used to conceptual design field at present, such as
Innovative design, Variant Design.A series of functional requirement of designs is design description, symbol by behavior, thaumatropy by FBS model
Close Design Thinking habit, it is easy to accomplish innovation can effectively support conceptual design.Although but being applied to the FBS of conceptual design
Model gives the operation framework being designed, and comprehensive, detailed conceptual design process operation is not provided but, to designer
The directiveness for carrying out conceptual design is not strong.
In addition FBS model can support innovative design, but can not effectively utilize existing design example.Although amendment
FBS model can use existing example, but directly go out structure from function direct derivation, can not support the innovation of conceptual design
Property.For this problem, Farrokh Mistree et al. carries out conceptual design from the angle of decision using life system theory
Research, indicates the function in product design with 20 key subsystems in life system theory, solves FBS model function
Incomplete problem is described, but Farrokh Mistree et al. does not study behavior, structure further, not
Have and provides the conceptual design process operation with exploitativeness.
Summary of the invention
In view of this, being used to the present invention provides the Method of Conceptual Design of a kind of combination life system theory and FBS
It solves tradition and does not provide comprehensive, detailed conceptual design process operation applied to the FBS model of conceptual design, concept is set
The directiveness of meter is not strong, while the problem of can not support Variant Design and innovative design simultaneously.
A kind of Method of Conceptual Design of combination life system theory and FBS, comprising the following steps:
Step 1: carrying out the expression of the FBS design element based on life system theory to product；
Step 2: carrying out FBS model reconstruction to product on the basis of FBS design element expression way.
Further, the expression of FBS design element includes functional expression, knot based on life system theory in the first step
Structure expression and Behavior Expression.
Further, the functional expression based on life system theory is divided into functional form expression and functional relationship
Two aspects are expressed,
Functional formization expression
To have more operability convenient for the FBS model based on life system theory, to the function based on life system theory
It can expression (LST-F) progress Formal Representation；The hexa-atomic group of form that function defines is borrowed, the function based on life system theory is constructed
It can expression (LST-F)；
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF: it is expressed using the icon of life system key subsystem；
Function title NF refers to: the title of life system key subsystem；
The affiliated type TF of function: the type of object involved by conceptual design has three kinds of substance, energy, information possibility；
Functional application environment CF: the constraint condition of function；
Functional objective GF: the design object to be realized of the function；
Function Causal description BF: the expected behavior parameter derived by function.
Functional relationship expression
According to the relationship between the existing each key subsystem of life system theory, each subfunction of Product Conceptual Design is constructed
Between function flow.The difference of type according to object involved by conceptual design constructs and is related to object for substance/energy function
Can flow and be related to object is to be related to the function flow that object is information；
According to the difference of design object emphasis, being related to object has substance/energy, substance/energy/letter for the design of product
Three kinds of breath, information possibility only need analytic function stream when to be related to object be substance/energy；When to be related to object be information, need to only it divide
The function flow of analysis；When to be related to object be substance/energy/information, analytic function stream simultaneously is needed；
The realization of any function is both needed to the subfunction and Internal reforming subfunction that there is input, output.It is related to object
There must be absorber, distributor and eductor for the design of substance/energy；Being related to the design that object is information there must be
Input translator, decoder, Management Of Resources, Accesses & Network, encoder and output translator.
Further, the structure representation based on life system theory is borrowed on the basis of functional formization expression
Same method expresses structure；
Structure is corresponding with the concept of function, and structure is the physical support of system realizing function, carries out structure to product and sets
The purpose of meter be exactly meet and realize function design requirement, therefore structure be both system existing way and system it is basic
Attribute, specifically, structure refer to the relationship between design finished product element and elementi；Using based on life system theory into
When row conceptual design, both structure can be derived according to known function, and function can also be derived according to known structure；
Due to the correspondence of structure and function, in order to preferably carry out the conversion of function and structure, representation borrows function
Energy representation method equally carries out structure representation using hexa-atomic group of method；
S=(DS, NS, TS, CS, GS, BS) (2)
DS refers to the structural schematic diagram of product structure；
NS refers to structure title；
TS refers to the affiliated type of structure, i.e. the title NF of structure mapping function；
CS refers to the environment of structure application, i.e., the constraint condition when structure uses；
GS refers to the achievable target of structure, refers specifically to the Causal description that the achievable function BS of structure refers to structure, tool
Body refers to structure behavioral parameters BS。
Further, the Behavior Expression based on life system theory is by analyzing life system key subsystem
The behavioral parameters system of procedure parameter system construction conceptual design, while to row on the basis of function and structure typeization are expressed
To be expressed.
Further, it is described based on life system theory functional formization expression include: functional component, function title,
The affiliated type of function, functional application environment, functional objective and function Causal description.
Further, FBS model reconstruction includes the following steps: in the second step
Step 1: the functional expression based on life system theory；Using 20 key subsystems in life system theory,
The function (LST-F) based on life system theory is converted by the function F obtained according to product design demand, while being utilized hexa-atomic
The form of group expresses each subfunction LST-F；
Step 2: function-structure mapping；According to decomposition come subfunction express and search for from previous example whether have can
Matched structure S, if so, step 4-1 then is executed using structure S as the architecture prototyping of subfunction, it is right in subsequent design
It carries out deformation design；If no, thening follow the steps 3；
Step 3: Function Decomposition；The subfunction decomposed based on life system theory corresponding for no example, can be right
It is analyzed again, and carries out Function Decomposition, executes step 4-2；
Step 4-1: structure behavioral parameters B is generatedS；Structure table is carried out using hexa-atomic group of form to the structure generated
It reaches, while showing that this has generated the structure behavior of structure and has joined using the procedure parameter system combination existing structure of life system theory
Number BS；
Step 4-2: expected behavior parameter B is generatede；It is designed using the procedure parameter system combination product of life system theory
Functional requirement obtains the expected behavior parameter B of each subfunctione；
Step 5: behavioral parameters comparative analysis；By expected behavior parameter BeWith structure behavioral parameters BSIt compares, obtains knot
Structure behavioral parameters BSWith expected behavior parameter BeGap；
Step 6: behavior-thaumatropy.According to step 5 obtain as a result, to the step 2 obtained architecture prototyping S of search into
Row redesigns, and reaches expected behavior parameter BeRequirement；
Step 7: structure self-check；Architecture prototyping S finally obtained to each subfunction carries out the relationship analysis of structure itself,
And the analysis of each application environment CS of structure thens follow the steps 8 if Lothrus apterus；If there is conflict, the structure of conflict structure is adjusted
Behavioral parameters BS, it is designed adjustment to it, i.e., is executed since step 5 again；
Step 8: structure --- functional check；By finally obtained architecture prototyping S and initial construction based on life system
Theoretical subfunction compares and analyzes, and checks whether that structure can realize that the logical relation between expectation function and structure is
It is no to meet the function flow relation based on life system theory building；If can be achieved, 9 are thened follow the steps；If being not implemented, i.e., again
It is executed since step 4-1；
Step 9: generating design description；The structure S ultimately generated is generated into design description D, exports design result.
The utility model has the advantages that
The present invention is indicated and by providing the FBS modelling element (function, behavior, structure) of standardization to FBS mould
Type is reconstructed, and building is based on the FBS model of life system theory (LST).FBS modelling is carried out in conjunction with life system theory
Element expression, so that the expression of design element is more comprehensive, can operate；In the design element expression based on life system theory
On the basis of, traditional FBS model is reconstructed, part innovation can not be solved in conjunction with partial modifications by compensating for traditional FBS model
Design the problem of and Function Decomposition do not have versatility the problem of.LST-FBS model is with versatility and comprehensive
On the basis of simultaneously there is exploitativeness and reliability, can support Variant Design and innovative design, form standardization have can
The design cycle of directiveness, has carried out effective support to conceptual design.
Detailed description of the invention
Fig. 1 is the flow chart in conjunction with life system theory and the Method of Conceptual Design of FBS.
Fig. 2 is reflection substance/energy function relationship function flow graph.
Fig. 3 is the function flow graph for reflecting informational function relationship.
Fig. 4 is the mapping graph of life system theory and FBS model.
Fig. 5 is the design flow diagram of LST-FBS model.
Fig. 6 is functional check figure.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1, the present invention provides the Method of Conceptual Design of a kind of combination life system theory and FBS,
This method carries out the expression of the FBS design element based on life system theory to product first, and the expression of FBS design element includes being based on
Functional expression, structure representation and the Behavior Expression of life system theory.Then right on the basis of FBS design element expression way
Product carries out FBS model reconstruction.
Functional expression based on life system theory
Functional expression in FBS frame is divided into functional form expression and functional relationship expresses two aspects.
(1) the functional formization expression based on life system theory
To have more operability convenient for the FBS model based on life system theory, to the function based on life system theory
It can expression (LST-F) progress Formal Representation.The hexa-atomic group of form that function defines is borrowed, the function based on life system theory is constructed
It can expression (LST-F).
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF: it is expressed using the icon of life system key subsystem；
Function title NF refers to: the title of life system key subsystem；
The affiliated type TF of function: the type of object involved by conceptual design has three kinds of substance, energy, information possibility；
Functional application environment CF: the constraint condition of function；
Functional objective GF: the design object to be realized of the function；
Function Causal description BF: the expected behavior parameter derived by function.
(2) functional relationship is expressed
According to the relationship between the existing each key subsystem of life system theory, each subfunction of Product Conceptual Design is constructed
Between function flow.The difference of type according to object involved by conceptual design constructs and is related to object for substance/energy function
It is to be related to the function flow (Fig. 3) that object is information that (Fig. 2), which can be flowed, and be related to object.
According to the difference of design object emphasis, being related to object has substance/energy, substance/energy/letter for the design of product
Three kinds of breath, information possibility.When to be related to object be substance/energy, the function flow of analysis chart 2 is only needed；When to be related to object be information, only
Need the function flow of analysis chart 3；When to be related to object be substance/energy/information, the function flow of analysis chart 2 and Fig. 3 simultaneously is needed.
The realization of any function is both needed to the subfunction and Internal reforming subfunction that there is input, output.It is related to object
There must be absorber, distributor and eductor for the design of substance/energy；Being related to the design that object is information there must be
Input translator, decoder, Management Of Resources, Accesses & Network, encoder and output translator etc..
Structure representation based on life system theory
Structure is corresponding with the concept of function, and structure is the physical support of system realizing function, carries out structure to product and sets
The purpose of meter be exactly meet and realize function design requirement, therefore structure be both system existing way and system it is basic
Attribute.Specifically, structure refers to the relationship between design finished product element and elementii.Using based on life system theory into
When row conceptual design, both structure can be derived according to known function, and function can also be derived according to known structure.
Due to the correspondence of structure and function, in order to preferably carry out the conversion of function and structure, representation borrows function
Energy representation method equally carries out structure representation using hexa-atomic group of method.
S=(DS, NS, TS, CS, GS, BS) (2)
DS refers to the structural schematic diagram of product structure；
NS refers to structure title；
TS refers to the affiliated type of structure, i.e. the title NF of structure mapping function；
CS refers to the environment of structure application, i.e., the constraint condition when structure uses；
GS refers to the achievable target of structure, refers specifically to the Causal description that the achievable function BS of structure refers to structure, tool
Body refers to structure behavioral parameters BS。
Behavior Expression based on life system theory
Behavior refers to the attribute derived from structure or desired structure, is the attribute that structure realizes function, in FBS mould
The important function formed a connecting link is played in type.Although life system and the concrete behavior mode of conceptual design system realizing function are not
Together, but it is general for describing the attribute of behavior.The procedure parameter body that the present invention passes through analysis life system key subsystem
It is the behavioral parameters system of structure concept design.
For the mapping for realizing function and structure, the FBS model (LST-FBS) based on life system theory borrows Gero and proposes
Expected behavior and structure behavior (actual behavior) concept.Expected behavior refers to the behavior derived by function, by
Expected behavior parameter BeIt is described, it is consistent with the functional expression BF in functional expression；Structure behavior refers to from known structure
In the behavior derived, by structure behavioral parameters BSIt is described, it is consistent with the structure representation in structure representation.Expected behavior
Parameter Be, structure behavioral parameters BSEqual recited function corresponds to the procedure parameter system of the key subsystem in life system theory, raw
Systems Theory is ordered with FBS mapping graph (Fig. 4) from the point of view of longitudinal, the FBS model description of life system theory is mapped as conceptual design
The description of FBS model, and FBS model is described by taking the piston of diesel engine as an example；From the point of view of laterally, the work of FBS model is former
Reason is that function, structure are converted by behavior, the expected behavior parameter derived by function and the structure derived by structure
Behavioral parameters share a set of behavioral parameters system, and left side is the specific mapping process of behavioral parameters system.
FBS model reconstruction is carried out to product
Research about FBS model in terms of conceptual design at present mostly only proposes frame, and there is no form one in detail
It is thin have can directiveness operating process.Based on problem above, base of the present invention in the design element analysis to conceptual design
On plinth, the FBS model based on life system theory is proposed in conjunction with life system theory, to instruct the completion of conceptual design.
As shown in Fig. 5, the step of FBS model reconstruction being carried out to product on the basis of FBS design element expression way
It is as follows:
Step 1: the functional expression based on life system theory.Using 20 key subsystems in life system theory,
The function (LST-F) based on life system theory is converted by the function F obtained according to product design demand, while being utilized hexa-atomic
The form of group expresses each subfunction LST-F.
Step 2: function-structure mapping.According to decomposition come subfunction express and search for from previous example whether have can
Matched structure S.If so, step 4-1 then is executed using structure S as the architecture prototyping of subfunction, it is right in subsequent design
It carries out deformation design；If no, thening follow the steps 3.
Step 3: Function Decomposition.The subfunction decomposed based on life system theory corresponding for no example, can be right
It is analyzed again, and carries out Function Decomposition, executes step 4-2.
Step 4-1: structure behavioral parameters B is generatedS.Structure table is carried out using hexa-atomic group of form to the structure generated
It reaches, while showing that this has generated the structure behavior of structure and has joined using the procedure parameter system combination existing structure of life system theory
Number BS。
Step 4-2: expected behavior parameter B is generatede.It is designed using the procedure parameter system combination product of life system theory
Functional requirement obtains the expected behavior parameter B of each subfunctione。
Step 5: behavioral parameters comparative analysis.By expected behavior parameter BeWith structure behavioral parameters BSIt compares, obtains knot
Structure behavioral parameters BSWith expected behavior parameter BeGap.
Step 6: behavior-thaumatropy.According to step 5 obtain as a result, the architecture prototyping S searched for step 2
It is redesigned, reaches expected behavior parameter BeRequirement.
Step 7: structure self-check.Architecture prototyping S finally obtained to each subfunction carries out the relationship analysis of structure itself,
And the analysis of each application environment CS of structure thens follow the steps 8 if Lothrus apterus；If there is conflict, the structure of conflict structure is adjusted
Behavioral parameters BS, it is designed adjustment to it, i.e., is executed since step 5 again.
Step 8: structure --- functional check.By finally obtained architecture prototyping S and initial construction based on life system
Theoretical subfunction compares and analyzes, and checks whether that structure can realize that the logical relation between expectation function and structure is
It is no to meet the function flow relation based on life system theory building.If can be achieved, 9 are thened follow the steps；If being not implemented, i.e., again
It is executed since step 4-1.
Step 9: generating design description.The structure S ultimately generated is generated into design description D, exports design result.
Compared to traditional FBS model, LST-FBS model by life system theory complete the decomposition for function with
And behavior, the mapping of structure, obtain specification, unitized subfunction LST-F and behavioral parameters, structural parameters.By right
Design procedure reconfigures, and LST-FBS model can be suitable for Variant Design and innovative design simultaneously, can preferably support concept
Design.By increasing structure self-check and structure --- functional check, LST-FBS model result obtained in conceptual design is more
With reliability.
The present invention is the Heavy Duty Diesel Engine of 6~17 tonnes of load trucks and Large and medium buses using object with certain
For design, by using the Method of Conceptual Design for combining life system theory and FBS, conceptual design is carried out to it.
(1) product general function is determined
According to given design requirement, the general function F of diesel engine is for 6~17 tonnes of load trucks and Large and medium buses
Initial mechanical energy is provided.
(2) according to life system theory, constructing function expresses table
Diesel engine will be embodied as lorry or car provides the function of initial mechanical energy, be related in preliminary analysis system
Object is that substance and energy because of non control system are not related to information.Being related to object based on life system theory building is object
Matter/energy functional expression table (table 1).
1 functional expression table of table
(3) structure representation is constructed, structure behavioral parameters are generated
The similar case that Design Technology for Diesels is searched for from case library, using the known structure data of certain Design Technology for Diesels as setting
Example is counted, the design of the Heavy Duty Diesel Engine is instructed.According to the example of search, construct structure representation table (table 2).
2 structure representation table of table
(4) behavioral parameters compare
It is compared, is obtained following by the structure behavioral parameters of the expected behavior parameter and structural generation that are generated to function
There is no realize for behavior:
A) absorber can not suck diesel oil.
B) absorber is without aircleaning facility, to guarantee the stability of absorbing material.
C) reservoir can not stored air.
D) eductor lacks the pressure apparatus for releasing exhaust gas.
E) eyelid retractor lacks radiator.
(5) Function Decomposition
The working principle of diesel engine is to convert the substances such as diesel oil and air to mechanical energy, therefore the design of diesel engine is only
It is related to substance and energy, is not related to information, therefore pertains only to the subsystem of processing energy and substance for the design of diesel engine,
Do not consider the subsystem of processing information.By analyzing structure representation table, there is no realize production in discovery design example
The structure of device and boundary device function.
A) boundary device is analyzed
The function of boundary device is that stable boundary or protection system are formed between internal system and environment, make system from
Ambient exterior atmospheric pressure, and the discrepancy of substance, ability and information is filtered.For diesel engine, the effect of boundary device is
Diesel engine is needed to separate with the external world, and there is the ability of certain barrier external interference.It also needs to have simultaneously to entering system
The effect being filtered with substances such as the air, diesel oil, exhaust gas of transmitting system.Function Decomposition is carried out to it, and generates desired row
For with expected behavior parameter (table 3).
3 boundary device Function Decomposition of table
B) production device analysis
The function of production device is to form stabilization to be coupled to keep substance/energy input or export from converter, and integrate
Substance is for body growth, reparation；Energy is provided for body movement；Product or information are provided for higher primary system.For
For diesel engine, final output product is mechanical energy, therefore producing the product that device is produced is mechanical energy.Life carries out function to it
It can decompose, and generate expected behavior and expected behavior parameter (table 4).
Table 4 produces device Function Decomposition
(6) behavior-structure mapping
Pass through what is mapped out to the life system subfunction not having in the expected behavior and design example that do not realize
Expected behavior is analyzed, and the corresponding structure of each expected behavior, consummatory behavior-structure mapping (table 5) are obtained.
5 behaviors of table-structure mapping table
(7) structure self-check
The application environment and working mechanism of the relationship between structure, each structure that comprehensive analysis has been designed at present, are looked into
It looks for conflict and does not meet the structure of working mechanism.The structure behavioral parameters for adjusting conflict structure, to not meeting working mechanism
Structure redesigned, make design with more systematicness.
A) intake valve and exhaust valve work together, and realize the distribution of diesel engine.Increase the coefficient knot of two structures
Structure behavioral parameters: valve folds 20 ° of ETAD expected time of arrival and departure；Increase the connection structure of intake valve and exhaust valve: timing gears.
B) cylinder body and cylinder cap have the function of preventing gas leakage and leak, should increase by two knots with eyelid retractor and boundary device is used as
Connection structure between structure: head gasket reinforces the leakproofness of diesel engine.
C) mechanical energy is transformed into crankshaft connecting rod system through piston, therefore piston must be connect with crankshaft connecting rod system.Increase
Piston pin, connecting rod.
D) radiator, which is adopted, is water-cooled, and lacks the radiator inleting pipe for the system of introducing the water into.
(8) structure --- functional check
Constructing function inspection figure (Fig. 6), the structure that final design is gone out and initial construction based on life system theory
Subfunction compares and analyzes, and checks whether that structure can realize whether expectation function, structural relation logic meet based on life system
The functional relationship logic and whether lose function that system theory constructs.In figure, red line part is according to the pass between subfunction
It is the relationship between the structure mapped out.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of Method of Conceptual Design of combination life system theory and FBS, which comprises the following steps:
Step 1: carrying out the expression of the FBS design element based on life system theory to product；
Step 2: carrying out FBS model reconstruction to product on the basis of FBS design element expression way；
The expression of FBS design element includes functional expression, structure representation and behavior based on life system theory in the first step
Expression；
The functional expression based on life system theory is divided into functional form expression and functional relationship expresses two aspects,
Functional formization expression
To have more operability convenient for the FBS model based on life system theory, to the menu based on life system theory
Formal Representation is carried out up to LST-F；The hexa-atomic group of form that function defines is borrowed, the functional expression based on life system theory is constructed
LST-F；
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF: it is expressed using the icon of life system key subsystem；
Function title NF refers to: the title of life system key subsystem；
The affiliated type TF of function: the type of object involved by conceptual design has three kinds of substance, energy, information possibility；
Functional application environment CF: the constraint condition of function；
Functional objective GF: the design object to be realized of the function；
Function Causal description BF: the expected behavior parameter derived by function；
Functional relationship expression
According to the relationship between the existing each key subsystem of life system theory, construct between each subfunction of Product Conceptual Design
Function flow, the difference of the type according to object involved by conceptual design constructs that be related to object be substance/energy function flow
Be related to object be information function flow；
According to the difference of design object emphasis, being related to object has substance/energy, substance/energy/information, letter for the design of product
Three kinds of possibility are ceased, when to be related to object be substance/energy, need to only analyze substance/energy function stream；When to be related to object be information, only
The function flow of information need to be analyzed；When to be related to object be substance/energy/information, need to analyze simultaneously substance/energy function flow and
The function flow of information；
The realization of any function is both needed to the subfunction and Internal reforming subfunction that there is input, output, and being related to object is object
The design of matter/energy there must be absorber, distributor and eductor；Being related to the design that object is information there must be input
Converter, decoder, Management Of Resources, Accesses & Network, encoder and output translator.
2. Method of Conceptual Design as described in claim 1, which is characterized in that the structure based on life system theory
Expression is that the method for borrowing hexa-atomic group on the basis of functional formization expression expresses structure；
Structure is corresponding with the concept of function, and structure is the physical support of system realizing function, carries out structure design to product
Purpose is exactly to meet and realize the design requirement of function, therefore structure is both the existing way of system and the basic category of system
Property, specifically, structure refers to the relationship between design finished product element and element；It is general using being carried out based on life system theory
When reading design, both structure can be derived according to known function, and function can also be derived according to known structure；
Due to the correspondence of structure and function, in order to preferably carry out the conversion of function and structure, representation borrows menu
Show method, structure representation is equally carried out using hexa-atomic group of method；
S=(DS, NS, TS, CS, GS, BS) (2)
S refers to structure；
DS refers to the structural schematic diagram of product structure；
NS refers to structure title；
TS refers to the affiliated type of structure, i.e. the title NF of structure mapping function；
CS refers to the environment of structure application, i.e., the constraint condition when structure uses；
GS refers to the achievable target of structure, refers specifically to the Causal description that the achievable function BS of structure refers to structure, refers specifically to
Structure behavioral parameters BS。
3. Method of Conceptual Design as claimed in claim 2, which is characterized in that the behavior based on life system theory
Expression is the behavioral parameters system by analyzing the procedure parameter system construction conceptual design of life system key subsystem, simultaneously
Behavior is expressed on the basis of function is expressed with structure typeization.
4. Method of Conceptual Design as described in claim 1, which is characterized in that FBS model reconstruction packet in the second step
Include following step:
Step 1: the functional expression based on life system theory；Using 20 key subsystems in life system theory, by root
The function F obtained according to product design demand is converted into the function LST-F based on life system theory, while utilizing hexa-atomic group of shape
Formula expresses each subfunction LST-F；
Step 2: function-structure mapping；According to decomposition come subfunction expression searched for from previous example and whether have and can match
Structure S, if so, execute step 4-1 then using structure S as the architecture prototyping of subfunction, in subsequent design to its into
Row deformation design；If no, thening follow the steps 3；
Step 3: Function Decomposition；The subfunction decomposed based on life system theory corresponding for no example, can be to it again
It is secondary to be analyzed, and Function Decomposition is carried out, execute step 4-2；
Step 4-1: structure behavioral parameters B is generatedS；Structure representation is carried out using hexa-atomic group of form to the structure generated, simultaneously
Show that this has generated the structure behavioral parameters B of structure using the procedure parameter system combination existing structure of life system theoryS；
Step 4-2: expected behavior parameter B is generatede；Utilize the procedure parameter system combination product design function of life system theory
Demand obtains the expected behavior parameter B of each subfunctione；
Step 5: behavioral parameters comparative analysis；By expected behavior parameter BeWith structure behavioral parameters BSIt compares, obtains structure row
For parameter BSWith expected behavior parameter BeGap；
Step 6: behavior-thaumatropy carries out again according to what step 5 obtained as a result, searching for obtained architecture prototyping S to step 2
New design, reaches expected behavior parameter BeRequirement；
Step 7: structure self-check；Architecture prototyping S finally obtained to each subfunction carries out the relationship analysis of structure itself, and
The analysis of each application environment CS of structure thens follow the steps 8 if Lothrus apterus；If there is conflict, the structure behavior of conflict structure is adjusted
Parameter BS, it is designed adjustment to it, i.e., is executed since step 5 again；
Step 8: structure-functional check；By finally obtained architecture prototyping S and initial construction based on life system theory
Subfunction compares and analyzes, and checks whether that structure can realize whether the logical relation between expectation function and structure meets
Function flow relation based on life system theory building；If can be achieved, 9 are thened follow the steps；If being not implemented, i.e., again from step
4-1 starts to execute；
Step 9: generating design description；The structure S ultimately generated is generated into design description D, exports design result.
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