CN107944095A - A kind of hierarchical system integration design setting model method - Google Patents
A kind of hierarchical system integration design setting model method Download PDFInfo
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Abstract
The present invention relates to a kind of hierarchical system integration design setting model method, predefined by conceptual design model storehouse, demand classification modeling, the functional requirement analysis based on use-case, systemic-function modeling, five steps of behaviour structure mapping in a variety of paths realize the Unify legislation of the demand to conceptual design of system model, function, behavior and structural information, the present invention has the advantages that formalization, object-oriented, patterned, it is possible to increase the efficiency of conceptual design of system.
Description
Technical field
The invention belongs to the research contents in computer-aided system design field, it is more particularly related to a kind of
Hierarchical system integration design setting model method.
Background technology
The Systematization method research of Complex Product Development is the product for being combined product design and system engineering, it develops
It is long-standing, general description is usually carried out as starting point using design process, and then probe into during this and complete each task
Required specific steps form detailed process approach.Typical system research and development process includes four-stage：Task is illustrated, is said
It is bright and define design objective；Conceptual design, defines the allomeric function and subfunction of product systems, forms functional structure；Tentatively set
Meter and detailed design, so as to generate designing scheme.
Although in different engineering fields, there is the mistake much with the difference of task in above-mentioned conceptual design process
Top-down design process is employed in journey model, such as Mechatronic Systems engineering mutually to tie with bottom-up integrated verification process
" V " model closed.This is because it is related to multidisciplinary problem, and it is more complicated than the design process of common product, to reduce research and development failure
Risk, the importance of Complex Mechatronic Products conceptual design is self-evident.
There is expression diversity in existing conceptual design descriptive model, the monistic feature of target, lacks unified description
The characteristic information (demand, function, behavior and structure etc.) of different aspect in design can be combined together by model, be formed integrated
Product concept visual angle, and feasible Conceptual Design is generated by the continuous iteration of the system model, evolution, to alternative
Optimal case solution is selected after carrying out evaluation decision, as the information source in follow-up detailed design phase.
The content of the invention
The purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of hierarchical system integration design setting model method,
Effective method is provided for engineering field conceptual design of system process.
A kind of hierarchical system integration design setting model method of the present invention, comprises the following steps：
The predefined step in conceptual design model storehouse：Being imported according to the design objective of different subject product systems structure is made
Demand model storehouse, functional model library, behavior model storehouse and structural model storehouse, graphically carry out model library using SysML
Unified Expression；
The step of demand classification models：System requirements are patterned with modeling from the overall angle of system；
The step of functional requirement based on use-case is analyzed：From user perspective, pass through the master of use case analysis identification product
Function is wanted, defines system boundary；
The step of systemic-function models：Designer is analyzed to identify input, the type that output is flowed and number for particular case
Amount, carries out allomeric function identification with definition and based on flow port two basic processes of matched Function Decomposition, output is only comprising original
The system functional model of subfunction；
The step of function- behavior- structure mapping in a variety of paths：Achievable atom work(is inferred to obtained functional structure
The physical arrangement of energy, and the contact between fabric port is established, form complete conceptual design of system scheme.
The first as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein according to different subjects
It is the step of demand model storehouse used in the design objective structure importing of product systems：
It will be modeled using the document formula demand of natural language description, in the modeling tool for supporting SysML language
Direct construction demand model storehouse, by demand model storehouse according to functional requirement, operational requirements, performance requirement, interface requirements to wrap
Formal classification is stored in the file of single specific format, each requirement elements by two base attributes " Id " and
" Text " is represented.
Second as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein according to different subjects
It is the step of functional model library used in the design objective structure importing of product systems：
Basic atomic function is decomposed into a four-tuple, including functional identity, inlet flow f_in, Functional Unit p, output stream
F_out, using the functional expression mode of " Functional Unit+flow object ", is subdivided into three-decker expression by Functional Unit, is thing by flow point
Material, energy and signal three major types.
The third as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein according to different subjects
It is the step of behavior model storehouse used in the design objective structure importing of product systems：
Behavior layer is divided into two aspects of anticipatory behavior and agenda, using the combination of " physics law+input and output "
Form is indicated anticipatory behavior, physics law is carried out with the constrained attributes of structural model it is corresponding, by iostream with
The input and output of function correspond to, and the relation between structural parameters variable and variable is indicated by equation；
The anticipatory behavior is the fundamental problems that systemic-function is realized from abstract aspect, by the type and category of flow object
Property change be considered as the change of its physical state, and the change follows certain physics law, and the agenda is structure mould
The physical behavio(u)r of block.
The 4th kind as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein according to different subjects
Product systems design objective structure import used in structural model storehouse step be：
Systemic-function and behavior model are mapped, output system structural design scheme, is then tested by entry evaluation
The reasonability of card scheme.
The 5th kind as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein based on flow port
The step of Function Decomposition matched somebody with somebody is：
Functional Unit is judged, according to the iostream comparing result of Functional Unit, if more in the type of stream, attribute
It is as soon as according to the Functional Unit for the definition that standardizes before and the layer representation method of flow object, system is overall in changing
Function Decomposition is refined as the functional mode of three abstraction hierarchies.
The 6th kind as a kind of hierarchical system integration design setting model method of the present invention is preferred, wherein to obtained function
Structure inferring goes out the physical arrangement of achievable atomic function, and establishes the contact between fabric port, and it is general to form complete system
The step of reading designing scheme be：
First, atomic function judgement is carried out to the function of input, after judgement meets mapping condition, carries out function-structure
Directly map, the port of the type and attribute to the iostream of atomic function and predefined physical arrangement carries out matching behaviour
Make, identical for the type of stream, attribute does not have the then successful match of range conflicts, otherwise fails, then, by the defeated of atomic function
Enter output stream to be matched again with the flow object attribute in anticipatory behavior, decision condition is same as described above, for successful match
Situation, will continue to carry out third time matching with the constrained attributes of the physical effect attribute of anticipatory behavior and predefined structure, into
Work(then terminates, and otherwise enters together with the atomic function for not matching anticipatory behavior and matches next time, if it is possible to finds input
The material flow attribute change of output and the material property of physical arrangement meet functional requirement, then according to this material searches physics knot
Structure, if this process equally fails, carries out manual intervention, and being realized by the design experiences autonomous Design structure of domain expert should
Function.
The beneficial effects of the invention are as follows overcome existing multidisciplinary complex product conceptual design field expression diversity, target
Unicity, lack the shortcomings that unified descriptive model, and the present invention can be to the demand, function, behavior of conceptual design of system model
Unify legislation is carried out with structure, there is formalization, object-oriented, patterned, improve the efficiency of conceptual design of system.
Brief description of the drawings
Fig. 1 is to carry out hierarchical system integration design setting model flow chart to multidisciplinary complex product；
Fig. 2 is function- behavior- structure mapping flow chart；
Fig. 3 is luggage case cover demand model；
Fig. 4 is luggage-boot lid use-case；
Fig. 5 is to close case lid function as a whole；
Fig. 6 is to close case lid functional mode；
Embodiment
Embodiment one：With reference to shown in Fig. 1, present embodiment is a kind of hierarchical system integration design setting model side
Method, comprises the following steps：
The predefined step in conceptual design model storehouse：Being imported according to the design objective of different subject product systems structure is made
Demand model storehouse, functional model library, behavior model storehouse and structural model storehouse, graphically carry out model library using SysML
Unified Expression；
The step of demand classification models：System requirements are patterned with modeling from the overall angle of system；
The step of functional requirement based on use-case is analyzed：From user perspective, pass through the master of use case analysis identification product
Function is wanted, defines system boundary；
The step of systemic-function models：Designer is analyzed to identify input, the type that output is flowed and number for particular case
Amount, carries out allomeric function identification with definition and based on flow port two basic processes of matched Function Decomposition, output is only comprising original
The system functional model of subfunction；
The step of function- behavior- structure mapping in a variety of paths：Achievable atom work(is inferred to obtained functional structure
The physical arrangement of energy, and the contact between fabric port is established, form complete conceptual design of system scheme.
Embodiment two：Present embodiment is that the further of embodiment one is limited, wherein according to different subjects
It is the step of demand model storehouse used in the design objective structure importing of product systems：
It will be modeled using the document formula demand of natural language description, in the modeling tool for supporting SysML language
Direct construction demand model storehouse, by demand model storehouse according to functional requirement, operational requirements, performance requirement, interface requirements to wrap
Formal classification is stored in the file of single specific format, each requirement elements by two base attributes " Id " and
" Text " is represented.
Embodiment three：Present embodiment is that the further of embodiment two is limited, wherein according to different subjects
It is the step of functional model library used in the design objective structure importing of product systems：
Basic atomic function is decomposed into a four-tuple, including functional identity, inlet flow f_in, Functional Unit p, output stream
F_out, using the functional expression mode of " Functional Unit+flow object ", is subdivided into three-decker expression by Functional Unit, is thing by flow point
Material, energy and signal three major types.
Embodiment four：Present embodiment is that the further of embodiment three is limited, wherein according to different subjects
It is the step of behavior model storehouse used in the design objective structure importing of product systems：
Behavior layer is divided into two aspects of anticipatory behavior and agenda, using the combination of " physics law+input and output "
Form is indicated anticipatory behavior, physics law is carried out with the constrained attributes of structural model it is corresponding, by iostream with
The input and output of function correspond to, and the relation between structural parameters variable and variable is indicated by equation；
The anticipatory behavior is the fundamental problems that systemic-function is realized from abstract aspect, by the type of flow object and
Attribute change is considered as the change of its physical state, and the change follows certain physics law, and the agenda is structure
The physical behavio(u)r of module.
Embodiment five：Present embodiment is that the further of embodiment four is limited, wherein according to different subjects
Product systems design objective structure import used in structural model storehouse step be：
Systemic-function and behavior model are mapped, output system structural design scheme, is then tested by entry evaluation
The reasonability of card scheme.
Embodiment six：Present embodiment is that the further of embodiment five is limited, wherein based on flow port
The step of Function Decomposition matched somebody with somebody is：
Functional Unit is judged, according to the iostream comparing result of Functional Unit, if more in the type of stream, attribute
It is as soon as according to the Functional Unit for the definition that standardizes before and the layer representation method of flow object, system is overall in changing
Function Decomposition is refined as the functional mode of three abstraction hierarchies.
Embodiment seven：With reference to shown in Fig. 2, present embodiment is that the further of embodiment six is limited, wherein
The physical arrangement of achievable atomic function is inferred to obtained functional structure, and establishes the contact between fabric port, is formed
Completely the step of conceptual design of system scheme is：
First, atomic function judgement is carried out to the function of input, after judgement meets mapping condition, carries out function-structure
Directly map, the port of the type and attribute to the iostream of atomic function and predefined physical arrangement carries out matching behaviour
Make, identical for the type of stream, attribute does not have the then successful match of range conflicts, otherwise fails, then, by the defeated of atomic function
Enter output stream to be matched again with the flow object attribute in anticipatory behavior, decision condition is same as described above, for successful match
Situation, will continue to carry out third time matching with the constrained attributes of the physical effect attribute of anticipatory behavior and predefined structure, into
Work(then terminates, and otherwise enters together with the atomic function for not matching anticipatory behavior and matches next time, if it is possible to finds input
The material flow attribute change of output and the material property of physical arrangement meet functional requirement, then according to this material searches physics knot
Structure, if this process equally fails, carries out manual intervention, and being realized by the design experiences autonomous Design structure of domain expert should
Function.
Below by specific embodiment, the present invention is described in further details, it will be appreciated that described herein specific
Embodiment only to explain the present invention, is not intended to limit the present invention.
By a simple mechanical system --- exemplified by the design setting model process of car trunk cover, its demand model is such as
Shown in Fig. 3
Third step, the functional requirement analysis based on use-case：From user perspective, the operation to case lid can be summarized
Use-case, wherein, operation including closing and opening two kinds of modes of operation, unloads case lid and is although not belonging to normal operating use-case model again
Farmland, but the extension use-case to operation is construed as, drawn it is possible thereby to analyze, which, which has, closes, opens, unloading three
Main systemic-function, as shown in Figure 4.
Four steps, systemic-function modeling：Exemplified by closing case lid this major function, its input and output can be carried out
Judge, definition simultaneously mathematics library expression, as shown in Figure 5.
Fig. 6 is the subfunction structure chart obtained after closing luggage case cover top-level functionality defined above is decomposed.For closing
For closed box lid function, overall input, the output situation of function, then since input, the inside of analytic function are defined first
Structure, when case lid is as input here, considers that it is fixedly connected, next considers its motion conditions, it can be seen that in structure first
When building functional structure, the logical relation of selective analysis to operate inlet flow, according to basic logic relation, compares function element type
Matched, such as connection, guiding.Similarly, from the input angle of manpower, judged according to the action direction of power, Ke Yifa
Existing three subfunctions can be completed to match.
5th step：The function- behavior- structure mapping in a variety of paths：It is relatively easy to close case lid functional structure, for case
The function of lid-structure mapping result is it will be apparent that it can be learnt that, closing function needs by the subfunction name in functional diagram
The physical arrangements such as canvas, nail, metallic plate, case lid are wanted, that is, complete complete system modelling process.
The above description is merely a specific embodiment, and protection scope of the present invention is not limited thereto, for this
It for the those of ordinary skill of field, can according to the above description be not added with creatively being improved or converting, and all these change
Into and conversion should all belong to the protection domains of appended claims of the present invention.
Claims (7)
- A kind of 1. hierarchical system integration design setting model method, it is characterised in that include the following steps：The predefined step in conceptual design model storehouse：According to used in importing the design objective of different subject product systems structure Demand model storehouse, functional model library, behavior model storehouse and structural model storehouse, graphically carry out model library using SysML unification Expression；The step of demand classification models：System requirements are patterned with modeling from the overall angle of system；The step of functional requirement based on use-case is analyzed：From user perspective, pass through the main work(of use case analysis identification product Can, define system boundary；The step of systemic-function models：Designer is analyzed to identify input for particular case, exports the type and quantity of stream, into Row allomeric function identifies with definition and only includes atomic function based on flow port two basic processes of matched Function Decomposition, output System functional model；The step of function- behavior- structure mapping in a variety of paths：Achievable atomic function is inferred to obtained functional structure Physical arrangement, and the contact between fabric port is established, form complete conceptual design of system scheme.
- A kind of 2. hierarchical system integration design setting model method according to claim 1, it is characterised in that the basis It is the step of demand model storehouse used in the design objective structure importing of different subject product systems：It will be modeled using the document formula demand of natural language description, in the modeling tool for supporting SysML language directly Demand model storehouse is built, by demand model storehouse according to functional requirement, operational requirements, performance requirement, interface requirements in the form of wrapping Classification storage in the file of single specific format, each requirement elements by two base attributes " Id " and " Text " come Represent.
- A kind of 3. hierarchical system integration design setting model method according to claim 2, it is characterised in that the basis It is the step of functional model library used in the design objective structure importing of different subject product systems：Basic atomic function is decomposed into a four-tuple, including functional identity, inlet flow f_in, Functional Unit p, output stream f_ Out, using the functional expression mode of " Functional Unit+flow object ", is subdivided into three-decker expression by Functional Unit, is thing by flow point Material, energy and signal three major types.
- A kind of 4. hierarchical system integration design setting model method according to claim 3, it is characterised in that the basis It is the step of behavior model storehouse used in the design objective structure importing of different subject product systems：Behavior layer is divided into two aspects of anticipatory behavior and agenda, using the combining form of " physics law+input and output " Anticipatory behavior is indicated, physics law is carried out with the constrained attributes of structural model it is corresponding, by iostream and function Input and output correspond to, the relation between structural parameters variable and variable is indicated by equation；The anticipatory behavior is the fundamental problems that systemic-function is realized from abstract aspect, by the type and attribute of flow object Change is considered as the change of its physical state, and the change follows certain physics law, and the agenda is construction module Physical behavio(u)r.
- A kind of 5. hierarchical system integration design setting model method according to claim 4, it is characterised in that the basis Different subject product systems design objective structure import used in structural model storehouse step be：Systemic-function and behavior model are mapped, output system structural design scheme, then passes through entry evaluation authentication The reasonability of case.
- A kind of 6. hierarchical system integration design setting model method according to claim 5, it is characterised in that it is described based on The step of flow port matched Function Decomposition is：Functional Unit is judged, according to the iostream comparing result of Functional Unit, if being more than one in the type of stream, attribute Item changes, just according to the Functional Unit for the definition that standardizes before and the layer representation method of flow object, by system allomeric function It is decomposed and refined into the functional mode of three abstraction hierarchies.
- 7. a kind of hierarchical system integration design setting model method according to claim 6, it is characterised in that described to obtaining To functional structure infer the physical arrangement of achievable atomic function, and establish the contact between fabric port, formed complete Conceptual design of system scheme the step of be：First, atomic function judgement is carried out to the function of input, after judgement meets mapping condition, carries out the direct of function-structure Mapping, the port of type and attribute and predefined physical arrangement to the iostream of atomic function carries out matching operation, right Identical in the type of stream, attribute does not have the then successful match of range conflicts, otherwise fails, then, the input of atomic function is defeated Go out stream to be matched again with the flow object attribute in anticipatory behavior, decision condition is same as described above, for the feelings of successful match Condition, will continue to carry out third time matching with the constrained attributes of the physical effect attribute of anticipatory behavior and predefined structure, it is successful then Terminate, otherwise enter together with the atomic function for not matching anticipatory behavior and match next time, if it is possible to find input and output Material flow attribute change and the material property of physical arrangement meet functional requirement, then according to this material searches physical arrangement, such as This process of fruit equally fails, then carries out manual intervention, and the function is realized by the design experiences autonomous Design structure of domain expert.
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