CN107944184A - With reference to life system theory and the Method of Conceptual Design of FBS - Google Patents
With reference to life system theory and the Method of Conceptual Design of FBS Download PDFInfo
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Abstract
The invention discloses a kind of combination life system theory and the Method of Conceptual Design of FBS, this method is primarily based on life system theory and FBS design elements is expressed, and standardization expression is carried out to the function of product, behavior and structure respectively using the key subsystem of life system theory；Secondly to traditional FBS model reconstructions, FBS design cycles are rebuild on the basis of the FBS design elements expression based on life system theory, compensate for traditional FBS design cycles can not solve local deformation and the design problem locally innovated, and improve designing quality by increasing inspection operation.This method is designed FBS models the expression of element and rebuilding for design cycle using life system theory, forms the LST FBS models with operability.The present invention with versatility and it is comprehensive on the basis of at the same time with exploitativeness and reliability, can support Variant Design and innovative design at the same time, form standardization have can directiveness design cycle.
Description
Technical field
The present invention relates to a kind of conceptual design method, is related to a kind of product concept of combination life system theory and FBS and sets
Meter method.
Background technology
Conceptual design is in the early stage of product design, is very important in the design process.Research shows the life of product
The cost in cycle 70% is determined in conceptual phase, while constraint of the conceptual design to designer is at least with larger
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.FBS models describe a series of functional requirement of designs by behavior, thaumatropy for design, symbol
Close Design Thinking custom, it is easy to accomplish innovation, can effectively support conceptual design.Although but 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 models can support innovative design, but can not effectively utilize existing design example.Although correct
FBS models can utilize 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. carry out conceptual design from the angle of decision-making using life system theory
Research, the function in product design is represented with 20 key subsystems in life system theory, solves FBS model functions
Incomplete problem is described, but Farrokh Mistree et al. do not study behavior, structure further, not
Have and provide the conceptual design process operation with exploitativeness.
The content of the invention
In view of this, the present invention provides a kind of combination life system theory and the Method of Conceptual Design of FBS, it is used for
Solve tradition and comprehensive, detailed conceptual design process operation is not provided applied to the FBS models of conceptual design, set for concept
The directiveness of meter is not strong, while the problem of can not support Variant Design and innovative design at the same time.
A kind of Method of Conceptual Design of combination life system theory and FBS, comprises the following steps：
The first step：The FBS design elements expression based on life system theory is carried out to product；
Second step：FBS model reconstructions are carried out to product on the basis of FBS design element expression ways.
Further, the expression of FBS design elements includes the functional expression based on life system theory, knot in the first step
Structure is expressed and Behavior Expression.
Further, the functional expression based on life system theory is divided into functional form expression and functional relationship
Two aspects of expression,
Functional formization is expressed
Operability is had more for ease of the FBS models based on life system theory, to the work(based on life system theory
Can expression (LST-F) progress Formal Representation；The hexa-atomic group of form that function defines is borrowed, builds the work(based on life system theory
Can expression (LST-F)；
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF：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, there is three kinds of material, energy, information possibility；
Application of function environment CF：The constraints 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 is expressed
According to the relation between the existing each key subsystem of life system theory, each subfunction of Product Conceptual Design is built
Between function flow.According to the difference of the type of object involved by conceptual design, the work(for being related to that object is material/energy is constructed
It is to be related to the function flow that object is information that can flow and be related to object；
According to the difference of design object emphasis, being related to object has material/energy, material/energy/letter for the design of product
Three kinds of breath, information possibility, when to be related to object be material/energy, only need analytic function stream；When to be related to object be information, it need to only divide
The function flow of analysis；When to be related to object be material/energy/information, analytic function stream at the same time is needed；
The realization of any function is both needed to the presence of input, the subfunction of output and Internal reforming subfunction.It is related to object
There must be absorber, distributor and eductor for the design of material/energy；It is 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, and carrying out structure to product sets
The purpose of meter is exactly to meet and realize the design requirement of function, thus structure be both system existing way and system it is basic
Attribute, specifically, structure refer to the relation between design finished product key element and key elementi；Using based on life system theory into
During row conceptual design, both structure can be derived according to known function, and function can also be derived according to known structure；
Due to structure and the correspondence of function, in order to preferably carry out the conversion of function and structure, representation borrows work(
Energy method for expressing, equally carries out structure representation using hexa-atomic group of method；
S=(DS, NS, TS, CS, GS, BS) (2)
DS refers to the structure diagram of product structure；
NS refers to structure title；
TS refers to the title NF of the affiliated type of structure, i.e. structure mapping function；
CS refers to the environment of structure application, i.e., the constraints 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 expression
To be expressed.
Further, the functional formization expression based on life system theory includes：Functional component, function title,
The affiliated type of function, application of function environment, functional objective and function Causal description.
Further, FBS model reconstructions comprise the following steps in the second step：
Step 1：Functional expression based on life system theory；Using 20 key subsystems in life system theory,
The function F obtained according to product design demand is converted into the function (LST-F) based on life system theory, while is 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 conventional example whether have can
Matched structure S, if so, the then architecture prototyping using structure S as subfunction, performs step 4-1, it is right in follow-up design
It carries out deformation design；If no, perform step 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, performs step 4-2；
Step 4-1：Generating structure behavioral parameters BS；Structure table is carried out using hexa-atomic group of form to the structure generated
Reach, at the same using life system theory procedure parameter system combination existing structure draw this generating structure structure behavior join
Number BS；
Step 4-2：Generate expected behavior parameter Be；Designed using the procedure parameter system combination product of life system theory
Functional requirement draws the expected behavior parameter B of each subfunctione；
Step 5：Behavioral parameters comparative analysis；By expected behavior parameter BeWith structure behavioral parameters BSContrasted, draw 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；The 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, if Lothrus apterus, perform step 8；If there is conflict, the structure of conflict structure is adjusted
Behavioral parameters BS, adjustment is designed to it, i.e., is performed again since step 5；
Step 8：Structure --- functional check；By the architecture prototyping S finally obtained 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 structure；If can be achieved, step 9 is performed；If it is not implemented, i.e., again
Performed since step 4-1；
Step 9：Generation design description；The structure S ultimately generated is generated into design description D, exports design result.
Beneficial effect：
The present invention is represented and to FBS moulds by providing the FBS modellings element (function, behavior, structure) of standardization
Type is reconstructed, FBS model of the structure based on life system theory (LST).FBS modellings are carried out with reference to life system theory
The list of elements reaches so that the expression of design element is more comprehensive, operable；In the design element expression based on life system theory
On the basis of, traditional FBS models are reconstructed, compensate for traditional FBS models and can not solve local innovation being combined with partial modifications
Design the problem of and Function Decomposition do not have the problem of versatility.LST-FBS models are with versatility and comprehensive
On the basis of at the same time there is exploitativeness and reliability, can support Variant Design and innovative design, form standardization have can
The design cycle of directiveness, effective support has been carried out to conceptual design.
Brief description of the drawings
Fig. 1 is the flow chart with reference to life system theory and the Method of Conceptual Design of FBS.
Fig. 2 is the function flow graph of reflection material/energy function relation.
Fig. 3 is the function flow graph of reflection informational function relation.
Fig. 4 is the mapping graph of life system theory and FBS models.
Fig. 5 is the design flow diagram of LST-FBS models.
Fig. 6 is functional check figure.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the present invention provides a kind of combination life system theory and the Method of Conceptual Design of FBS,
This method first carries out product the FBS design elements expression based on life system theory, and the expression of FBS design elements includes being based on
Functional expression, structure representation and the Behavior Expression of life system theory.Then it is right on the basis of FBS design element expression ways
Product carries out FBS model reconstructions.
Functional expression based on life system theory
Functional expression in FBS frames is divided into functional form expression and functional relationship expresses two aspects.
(1) the functional formization expression based on life system theory
Operability is had more for ease of the FBS models based on life system theory, to the work(based on life system theory
Can expression (LST-F) progress Formal Representation.The hexa-atomic group of form that function defines is borrowed, builds the work(based on life system theory
Can expression (LST-F).
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF：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, there is three kinds of material, energy, information possibility；
Application of function environment CF：The constraints 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 relation between the existing each key subsystem of life system theory, each subfunction of Product Conceptual Design is built
Between function flow.According to the difference of the type of object involved by conceptual design, the work(for being related to that object is material/energy is constructed
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 material/energy, material/energy/letter for the design of product
Three kinds of breath, information possibility.When to be related to object be material/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 material/energy/information, the function flow of analysis chart 2 and Fig. 3 at the same time is needed.
The realization of any function is both needed to the presence of input, the subfunction of output and Internal reforming subfunction.It is related to object
There must be absorber, distributor and eductor for the design of material/energy；It is 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, and carrying out structure to product sets
The purpose of meter is exactly to meet and realize the design requirement of function, thus structure be both system existing way and system it is basic
Attribute.Specifically, structure refers to the relation between design finished product key element and key elementii.Using based on life system theory into
During row conceptual design, both structure can be derived according to known function, and function can also be derived according to known structure.
Due to structure and the correspondence of function, in order to preferably carry out the conversion of function and structure, representation borrows work(
Energy method for expressing, equally carries out structure representation using hexa-atomic group of method.
S=(DS, NS, TS, CS, GS, BS) (2)
DS refers to the structure diagram of product structure；
NS refers to structure title；
TS refers to the title NF of the affiliated type of structure, i.e. structure mapping function；
CS refers to the environment of structure application, i.e., the constraints 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 moulds
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 the attribute of description behavior is general.Procedure parameter body of the invention by analyzing life system key subsystem
It is the behavioral parameters system of structure concept design.
To realize the mapping of function and structure, the FBS models (LST-FBS) based on life system theory borrow Gero and propose
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 graphs (Fig. 4) from the point of view of longitudinal direction, the FBS models description of life system theory is mapped as conceptual design
FBS models describe, and FBS models are described by taking the piston of diesel engine as an example；From the point of view of laterally, the work of FBS models 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 reconstructions are carried out to product
The research on FBS models in terms of conceptual design mostly simply proposes frame at present, does not 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 models based on life system theory are proposed with reference to life system theory, to instruct the completion of conceptual design.
As shown in Figure 5, on the basis of FBS design element expression ways to product carry out FBS model reconstructions the step of
It is as follows：
Step 1：Functional expression based on life system theory.Using 20 key subsystems in life system theory,
The function F obtained according to product design demand is converted into the function (LST-F) based on life system theory, while is 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 conventional example whether have can
Matched structure S.If so, the then architecture prototyping using structure S as subfunction, performs step 4-1, it is right in follow-up design
It carries out deformation design；If no, perform step 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, performs step 4-2.
Step 4-1：Generating structure behavioral parameters BS.Structure table is carried out using hexa-atomic group of form to the structure generated
Reach, at the same using life system theory procedure parameter system combination existing structure draw this generating structure structure behavior join
Number BS。
Step 4-2：Generate expected behavior parameter Be.Designed using the procedure parameter system combination product of life system theory
Functional requirement draws the expected behavior parameter B of each subfunctione。
Step 5：Behavioral parameters comparative analysis.By expected behavior parameter BeWith structure behavioral parameters BSContrasted, draw 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
Redesigned, reach expected behavior parameter BeRequirement.
Step 7：Structure self-check.The 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, if Lothrus apterus, perform step 8；If there is conflict, the structure of conflict structure is adjusted
Behavioral parameters BS, adjustment is designed to it, i.e., is performed again since step 5.
Step 8：Structure --- functional check.By the architecture prototyping S finally obtained 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 structure.If can be achieved, step 9 is performed；If it is not implemented, i.e., again
Performed since step 4-1.
Step 9：Generation design description.The structure S ultimately generated is generated into design description D, exports design result.
Compared to traditional FBS models, LST-FBS models by life system theory complete 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 models can be suitable for Variant Design and innovative design at the same time, can preferably support concept
Design.By increasing structure self-check and structure --- functional check, the result that LST-FBS models obtain in conceptual design is more
With reliability.
The present invention with certain is the Heavy Duty Diesel Engine of 6~17 tonnes of load trucks and Large and medium buses using object
Exemplified by 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 expression table
Diesel engine will be embodied as lorry or car provides the function of initial mechanical energy, be arrived involved in preliminary analysis system
Object is material and energy, because of non control system, is not related to information.It is thing to be related to object based on life system theory structure
The functional expression table (table 1) of matter/energy.
1 functional expression table of table
(3) structure representation, generating structure behavioral parameters are built
The similar case of 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, instructs the design of the Heavy Duty Diesel Engine.According to the example of search, structure structure representation table (table 2).
2 structure representation table of table
(4) behavioral parameters contrast
Contrasted, obtained following by the expected behavior parameter and the structure behavioral parameters of structural generation that are generated to function
Behavior is not realized：
A) absorber can not suck diesel oil.
B) absorber is without aircleaning facility, to ensure the stability of absorbing material.
C) holder can not stored air.
D) eductor lacks the pressure apparatus for releasing exhaust gas.
E) eyelid retractor lacks radiator.
(5) Function Decomposition
The operation principle of diesel engine is that the materials such as diesel oil and air are converted into mechanical energy, therefore the design of diesel engine is only
It is related to material and energy, is not related to information, therefore the design for diesel engine pertains only to the subsystem of processing energy and material,
Without considering the subsystem of processing information.By analyzing structure representation table, find not realize production in design example
The structure of device and border device function.
A) border device is analyzed
The function of border device is that stable border or protection system are formed between internal system and environment, make system from
Ambient exterior atmospheric pressure, and the discrepancy to material, ability and information is filtered.For diesel engine, the effect of border device is
Diesel engine is needed to separate with the external world, and with the ability of certain barrier external interference.Also need to possess at the same time into system
The effect filtered with materials 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 border device Function Decomposition of table
B) device analysis is produced
The function of production device is to be formed to stablize to be coupled to keep material/energy input or export from converter, and comprehensive
Material is for body growth, reparation；Energy is provided for body movement；Product or information are provided for higher level system.For
For diesel engine, its final output product is mechanical energy, therefore it is mechanical energy to produce the product that device is produced.Life carries out work(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
Mapped out by the life system subfunction not having in the expected behavior to not realizing and design example
Expected behavior is analyzed, and obtains the corresponding structure of each expected behavior, the mapping (table 5) of consummatory behavior-structure.
The mapping table of 5 behaviors of table-structure
(7) structure self-check
The application environment and working mechanism of relation, each structure between the structure that comprehensive analysis has been designed at present, are looked into
Look for conflict and do not meet the structure of working mechanism.The structure behavioral parameters of conflict structure are adjusted, to not meeting working mechanism
Structure redesigned, make design with more systematicness.
A) intake valve is worked together with exhaust valve, realizes 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 has the function of to prevent gas leakage and leak, should increase by two knots with cylinder cap with as eyelid retractor and border device
Connection structure between structure：Head gasket, strengthens the leakproofness of diesel engine.
C) mechanical energy is transformed into crankshaft connecting rod system through piston, therefore piston must be connected with crankshaft connecting rod system.Increase
Piston pin, connecting rod.
D) radiator uses water cooling, 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
Unite the Theory Construction functional relationship logic and whether have something lost drop.In figure, red line part is according to the pass between subfunction
It is the relation between the structure mapped out.
In conclusion the foregoing is merely a prefered embodiment of the invention, it is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (7)
1. the Method of Conceptual Design of a kind of combination life system theory and FBS, it is characterised in that comprise the following steps：
The first step：The FBS design elements expression based on life system theory is carried out to product；
Second step：FBS model reconstructions are carried out to product on the basis of FBS design element expression ways.
2. Method of Conceptual Design as claimed in claim 1, it is characterised in that FBS design elements table in the first step
Up to including the functional expression based on life system theory, structure representation and Behavior Expression.
3. Method of Conceptual Design as claimed in claim 2, it is characterised in that the function based on life system theory
Expression is divided into functional form expression and functional relationship expresses two aspects,
Functional formization is expressed
Operability is had more for ease of the FBS models 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, builds the menu based on life system theory
Up to (LST-F)；
LST-F=(DF, NF, TF, CF, GF, BF) (1)
Functional component DF：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, there is three kinds of material, energy, information possibility；
Application of function environment CF：The constraints 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 is expressed
According to the relation between the existing each key subsystem of life system theory, build between each subfunction of Product Conceptual Design
Function flow, according to the difference of the type of object involved by conceptual design, construct the function flow for being related to that object is material/energy
It is to be related to the function flow that object is information with object is related to；
According to the difference of design object emphasis, being related to object has material/energy, material/energy/information, letter for the design of product
Three kinds of possibility are ceased, when to be related to object be material/energy, only need analytic function stream；When to be related to object be information, the work(that need to only analyze
Can stream；When to be related to object be material/energy/information, analytic function stream at the same time is needed；
The realization of any function is both needed to the presence of input, the subfunction of output and Internal reforming subfunction, and it is thing to be related to object
The design of matter/energy there must be absorber, distributor and eductor；It is related to the design that object is information and there must be input
Converter, decoder, Management Of Resources, Accesses ＆ Network, encoder and output translator.
4. Method of Conceptual Design as claimed in claim 2, it is characterised in that the structure based on life system theory
Expression is to borrow same method on the basis of functional formization expression to express structure；
Structure is corresponding with the concept of function, and structure is the physical support of system realizing function, and structure design is carried out 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 relation between design finished product key element and key elementi；Carried out using based on life system theory
During conceptual design, both structure can be derived according to known function, and function can also be derived according to known structure；
Due to structure and the correspondence of 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)
DS refers to the structure diagram of product structure；
NS refers to structure title；
TS refers to the title NF of the affiliated type of structure, i.e. structure mapping function；
CS refers to the environment of structure application, i.e., the constraints 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。
5. Method of Conceptual Design as claimed in claim 2, it is characterised 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, at the same time
Behavior is expressed on the basis of function is expressed with structure typeization.
6. Method of Conceptual Design as claimed in claim 3, it is characterised in that the function based on life system theory
Formal Representation includes：Functional component, function title, the affiliated type of function, application of function environment, functional objective and function cause and effect
Description.
7. Method of Conceptual Design as claimed in claim 1, it is characterised in that FBS model reconstructions bag in the second step
Include following step：
Step 1：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 utilizes hexa-atomic group
Form expresses each subfunction LST-F；
Step 2：Function-structure mapping；According to decomposition come subfunction expression searched for from conventional example and whether have and can match
Structure S, if so, the then architecture prototyping using structure S as subfunction, perform step 4-1, in follow-up design to its into
Row deformation design；If no, perform step 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, perform step 4-2；
Step 4-1：Generating structure behavioral parameters BS；Structure representation is carried out using hexa-atomic group of form to the structure generated, at the same time
The structure behavioral parameters B of the generating structure is drawn using the procedure parameter system combination existing structure of life system theoryS；
Step 4-2：Generate expected behavior parameter Be；Utilize the procedure parameter system combination product design function of life system theory
Demand draws the expected behavior parameter B of each subfunctione；
Step 5：Behavioral parameters comparative analysis；By expected behavior parameter BeWith structure behavioral parameters BSContrasted, draw 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；The 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, if Lothrus apterus, performs step 8；If there is conflict, the structure behavior of conflict structure is adjusted
Parameter BS, adjustment is designed to it, i.e., is performed again since step 5；
Step 8：Structure --- functional check；By the architecture prototyping S finally obtained and initial construction based on life system theory
Subfunction compare and analyze, check whether that structure can realize whether the logical relation between expectation function, and structure accords with
Close the function flow relation based on life system theory structure；If can be achieved, step 9 is performed；If it is not implemented, i.e., again from step
Rapid 4-1 starts to perform；
Step 9：Generation design description；The structure S ultimately generated is generated into design description D, exports design result.
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