KR101429807B1 - Multifaceted modeling simulation framwork for system of systems using ieee 1516 - Google Patents

Abstract

A framework for multidimensional modeling simulation of a complex system using IEEE 1516 is disclosed. A system modeling simulation system of a system of systems in which a plurality of single systems are combined through an organic relationship simulates a complex system through a SoSES (System of Systems Entity Structure) / FB (Federate Base) framework SoSES / FB framework is a SoSES base that stores a System of Systems Entity Structure (SoSES) tree for a complex system; A Federate Base for storing a simulator corresponding to a single system; And a synthesizer for synthesizing federations for the simulator via the SoSES base and the federate base.

Description

{MULTIFACETED MODELING SIMULATION FRAMEWORK FOR SYSTEM OF USE OF IEEE 1516} [0002]

Embodiments of the present invention relate to a framework for multidisciplinary modeling simulation of a hybrid system using IEEE 1516.

Multifaceted System Modeling is a modeling method that collectively represents all alternatives in a system. In other words, it is a way of expressing how the system is organized and various alternatives that may be involved in configuring the system. For systems with multiple alternatives, the system can be effectively represented using a multi-faceted system modeling approach.

For example, let's say a simulation that evaluates a computer system. The computer system has various choices depending on the internal models. That is, the computer system can be represented in the form of a tree as shown in FIG. 1, which collectively represents the components that constitute the computer system and the alternatives that the computer system can have. First, FIG. 1 shows that a computer is made up of essential components such as a central processing unit, a graphics card, a storage device, and an input device, and the models below the essential components show what alternatives each essential component has give. For example, you can choose Intel or AMD for a central processing unit, and you can choose one of several alternatives, such as a hard disk or SSD, in the case of a storage device.

After expressing the computer system as such, a multi-faceted system modeling simulation can be performed as shown in FIG. That is, after expressing the computer system in a tree form, the user selects a desired model among the alternatives that the system may have according to the purpose. After all of the alternatives have been selected, the user selects models from the model library in which the actual models that make up the computer system actually exist. After that, the selected real models are synthesized to complete one computer system, which enables simulation to evaluate the computer system.

There is a System Entity Structure / Model Base (SES / MB) framework as a multi-faceted system modeling simulation method. SES is a formalism that can be expressed as a whole by using a tree structure as described above, and MB is a repository for managing actual component models. That is, the SES / MB framework expresses the system in the form of a tree through the SES formalism, refers to the system, and calls the model from the MB to synthesize the entire system.

Modeling simulation using the SES / MB framework has several advantages. First, formal modeling is possible, which makes it easier to manage the structure of the system. It also reduces the time and cost of modeling and simulating the system as it reduces unnecessary or repetitive procedures when configuring the system for the purpose. In addition, the existing models can be managed in the model library, and the models can be reused, thereby enhancing the reusability of the models.

This single system can be modeled and simulated using the SES / MB framework. But the real world is not simply a single system. The real world is often composed of System of Systems, which is composed of the organic relations of various single systems. A complex system is a collection of systems that share resources and capabilities between systems in order to obtain more complex meta-systems when different systems exist. Such a hybrid system can provide better performance, more complex functions and more functions than the respective systems constituting it.

For example, as shown in FIG. 3, a desktop, a notebook, a server, a home theater, and the like represent each single system, and a home network in which each system is organically connected to each other using a network represents a hybrid system. Such a home network can perform more diverse and complex functions than the respective elements that make up it, i.e., each system.

Even in such a complex system, more effective modeling simulation is possible by applying the aforementioned multi-faceted modeling simulation method. However, since the proposed SES / MB framework is a framework for a single system, a new framework suitable for a complex system is needed.

The present invention extends the SES / MB framework to propose a new framework for multidimensional modeling simulation of a hybrid system using IEEE 1516 instead of a single system. To do this, we first propose a formal system of system entity structure (SoSES), which is a new formalism for expressing the structure of a complex system, and define the expressions and operations that represent them. In addition, we propose a new Federated Base (FB) that stores each system and propose a new framework, System of Systems Entity Structure / Federate Base (SoSES / FB)

Through the proposed framework, the structure of the complex system can be expressed formally, and when the simulators are selected by the user 's choice, the selected simulator can be taken from the federate base and synthesized to perform the interlocking simulation. In addition, we propose a synthesis process of a complex system and automate the process to improve user convenience and reduce development time. In addition, the structure of the complex system can be effectively managed by using the mathematical framework called the proposed SoSES formalism.

A system modeling simulation system of a system of systems in which a plurality of single systems are combined through an organic relationship simulates a complex system through a SoSES (System of Systems Entity Structure) / FB (Federate Base) framework SoSES / FB framework is a SoSES base that stores a System of Systems Entity Structure (SoSES) tree for a complex system; A Federate Base for storing a simulator corresponding to a single system; And a synthesizer for synthesizing federations for the simulator via the SoSES base and the federate base.

According to one aspect, the SoSES tree comprises a SoSES tree configured by a user based on a list of simulators stored in a federate base, or a SoSES tree constructed by a domain expert, or a Prestored Entity Structure (PES) generated by a pruning process ) ≪ / RTI > tree.

According to another aspect, the federate base may store a simulator that meets HLA (High Level Architecture) specifications based on IEEE 1516.

According to another aspect, the SoSES / FB framework includes a tree manager that manages the SoSES tree stored in the SoSES base, a pruner that performs pruning on the SoSES tree, And a data synthesizer for synthesizing the data and the synthesized data.

According to another aspect, the SoSES / FB framework further includes a federate manager for transferring the information of each simulator stored in the federate base to the synthesizer, or for transferring information of each simulator according to the synthesis result in the synthesizer to the federate base .

According to another aspect, the synthesizer conveys information of the simulator between the SoSES manager and the federation manager, and sends a command to the federation manager to allow each simulator to join the federation so that when all the simulators participate in the federation, . ≪ / RTI >

A system modeling simulation method of a system of systems in which a plurality of single systems are combined through an organic relationship includes a SoSES base storing a System of Systems Entity Structure (SoSES) tree for a complex system; (System of Systems Entity Structure) / FB (Federate Base) framework composed of a Federate Base which stores a simulator corresponding to a single system, and is implemented by pruning the SoSES tree A data synthesizing step of synthesizing the data of the selected simulator; A federation synthesis step of synthesizing a federation for the selected simulator; And a federation execution step of starting the simulation when all of the selected simulators participate in the federation.

The framework for simulating multidimensional system modeling of a hybrid system using IEEE 1516 can automate the process of synthesizing federation to improve user convenience and shorten federation development time. Also, by using SoSES formalism, Can be efficiently managed, and its structure is easy to change, so it is convenient to simulate various alternatives. Using these frameworks, various simulations in the field of defense can be applied to reduce costs, shorten development time, and enhance user convenience.

1 is a diagram for explaining an internal model structure of a computer system.
Figure 2 is a diagram for describing a multifaceted modeling simulation for the computer system of Figure 1;
3 is a diagram for explaining a hybrid system according to a home network.
4 is a diagram for explaining an inter-specialization node of the SoSES formalism in an embodiment of the present invention.
5 is a diagram for explaining a SoSES / BE framework in an embodiment of the present invention.
Figure 6 illustrates a complex system according to the SoSES / BE framework in one embodiment of the present invention.
7 is a diagram for explaining a SoSES base in an embodiment of the present invention.
FIG. 8 is a view for explaining a federate base in an embodiment of the present invention. FIG.
9 and 10 are views for explaining a complex system environment implemented on the basis of SoSES formalism and SoSES / BE framework in an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

One. SoSES  Formalism

First, let's look at the SoSES (System of Systems Entity Structure) typology that we would like to propose. We propose SoSES formalism based on IEEE 1516 by expanding the existing SES formalism in order to express the structure and alternatives of the system of systems consisting of several independent systems, .

As in the case of a single system in the SES formalism, in order to accurately express the complex system, it is necessary to have all the information about the configuration relation, the classification relation, and the connection relation. The configuration relationship indicates which systems the composite system consists of. The classification relationship is how the complex system is classified and specified according to a given category, that is, what alternatives the system constituting the complex system can have. Finally, the connection relationship specifies what kind of connection the constituent systems can complete the entire complex system.

The existing SES formalism specifies the input / output port in the model when the connection relation is expressed, and each port sends and receives messages. However, in SoSES formalism, based on IEEE 1516, each system, that is, simulator, can specify the connection relation through data exchanged. At this time, each simulator based on IEEE 1516 distinguishes an object and an interaction from each other because it is necessary to specify an object, which is data shared between simulators, in addition to an interaction that means such a message.

In addition, the existing SES formalism refers to models in which a root node represents a single system and each subordinate node constitutes the system. However, in the SoSES formalism, the root node means a hybrid system, that is, a federation, and each lower node means an independent single system, or simulator, that forms them.

In the conventional SES formalism, there is no limit to the layer that the SES tree can have. However, since the SoSES formalism uses IEEE 1516, the node that shows the configuration relation with the root node finally so that the actual interworking can be performed, There are three levels of hierarchy. Table 1 below shows the differences between the SES formalism and the SoSES formalism.

SoSES formalism is a formalism that systematically shows such configuration, classification, and connection relations, and SoSES is a structure that expresses these relations in a tree form. SoSES formalism is largely divided into expressions and operations, and expressions consist of nodes and data.

Table 2 shows the types of nodes expressing SoSES formalism. SoSES consists of three types as system node, inter-aspect node, and inter-specialization node as follows.

The system node corresponds to the real system, and corresponds to the federation or simulator in the simulation. The root node representing the top node is a system node, which means a complex system. In an actual interworking simulation, this corresponds to federation. The leaf node representing the lowest node is also a system node, which means each system, that is, a simulator.

An inter-aspect node is a node representing a configuration relationship that a system node can have, represented by a single dotted line in the tree. In this case, both the child node and the parent node of the inter-aspect are configured as system nodes. An inter-aspect can have multiple child nodes, which means that the parent node is made up of its child nodes.

An inter-specialization node is a node for representing the classification relationship of a complex system, and is represented by a two-dotted line in the tree. In the inter-specialization node, both the child node and the parent node are configured as system nodes, and the child node is composed of two or more. If the parent node represents an object of a general system, the child node represents a concrete system object of the parent node. That is, a system has one of several alternatives. As can be seen from FIG. 4, the simulator B means that it can be selected and selected as one of B1, B2, and B3. In the inter-aspect node, if the child nodes are part of the parent node, then in the inter-specialization node, the child node has an equal position to be replaced with the parent node.

In addition to these three nodes, information indicating the connection relation of the hybrid system is required, which is called data. In the data, the same concepts as the object defined in IEEE 1516 SOM and the interaction are applied. Objects can be changed over time, but they are used when sharing between simulators is needed while maintaining the changed information, and have attributes as details. Interaction represents information that does not need to be retained over time, and has parameters as details. It is also necessary to distinguish the input / output of data as well as the type of data, as in the SES formalism. In the SES formalism, when connecting between two ports, it is possible to distinguish the output that precedes the pair and the input that follows. In SoSES, the output of data according to IEEE 1516 is referred to as [P] as a publication and the data received as a subscribe is referred to as [S]. [P] [S] is used for all input / output data.

For example, if [P] is an object X {x1, x2, x3}, then object X has attributes x1, x2 and x3 and publishes this data, and [S] interaction Y {y1, y2} Interaction Y has parameters y1 and y2, meaning that we will subscribe to this data. Thus, a tree can be represented using three nodes and data, and FIG. 4 is an example of expressing an actual tree using these expressions.

2. SoSES / FB Framework

The present invention proposes a whole SoSES / FB framework for composing, compositing, and executing a hybrid system based on the SoSES formalism proposed above. In addition, we extend the existing SES base to propose the concept of SoSES base, and similarly extend the model base to propose Federate Base.

The SoSES / FB framework is based on the existing SES / MB framework. As shown in FIG. 5, if a system to be configured in the SES / MB framework is one system, the SoSES / FB framework corresponds to a complex system (federation). Likewise, if each model is SES / MB system, SoSES / FB corresponds to each system (simulator).

Figure 6 illustrates a complex system according to the SoSES / BE framework in one embodiment of the present invention.

Referring to FIG. 6, the composite system is constructed as one completed federation via the SoSES base 10 and the federating base 20. When Pruning is performed in the SoSES base 20 which has the structural information of the complex system, it has a list of the Pruned Entity Structure, that is, the completed simulator. This simulator list is referenced in the federating base 20 having the actual simulators and synthesized through the synthesizer 50, and the federation is completed. This completed federation is interlocked with the simulator through the interworking middleware.

6, the SoSES / FB framework includes a SoSES base 10 storing a SoSES tree, a Federate base 20 storing simulators, and a SoSES manager 30 managing the respective SoSES bases. A federate manager 40, and a synthesizer 50 for synthesizing federation. Let's take a closer look at each of these.

2-1. SoSES  The base (10)

The SoSES base 10 is a repository storing a SoSES tree configured according to the SoSES formalism. In the SoSES base 10, a user configured SoSES tree can be stored, or conversely, an existing SoSES can be called up and used. The Pruned Entity Structure Tree created after the pruning process is also stored in the SoSES base 10, and the stored Pruned Entity Structure Tree can also be retrieved from the SoSES base 10 and used.

2-2. Federate  The base 20,

Federate base 20 is a repository where actual simulators are stored. If the SoSES tree has the name of the simulator as the information, then the federate base 20 has the executable simulator and the data together. When the SoSES tree is pruned and synthesized, the system nodes constituting the SoSES tree refer to the name to call up the actual simulators in the federate base 20 to synthesize the simulators.

The simulators constituting the federate base 20 are reused in the existing simulators. It is also assumed that these simulators should be composed of HLA-compliant simulators that are implemented to satisfy HLA specifications. In practice, it is necessary to comply with all the rules and interfaces of the interworking structure so that information can be exchanged externally among the interworking participating systems in the interworking. In this embodiment, simulators conforming to the HLA based on the IEEE 1516, As an example.

As shown in FIG. 8, the simulators in the federate base 20 are composed of HLA-compliant simulators and data including SOM (Simulation Object Model) information of each simulator.

2-3. SoSES  The manager (30)

The SoSES manager 30 constitutes and manages the SoSES tree. The SoSES manager 30 comprises a tree manager for managing the tree structure, a pruner for pruning, and a data synthesizer for synthesizing data. The SoSES tree can be configured by the user by invoking the simulator list on the Federate base 20 or by invoking the SoSES tree constructed by the existing domain expert from the SoSES base 10, You can also use, edit, and save directly. Since the SoSES manager 30 constructs the tree based on the SoSES formalism, it should not be contradictory to the commitments proposed in the SoSES formalism conceptually. The SoSES manager 30 also performs the pruning function after the SoSES tree is completed by these two methods. After the SoSES tree is completed, the child nodes of the inter-specialization node, that is, the alternatives are selected by the user, and the pruning process is performed after the selection. After the pruning is completed, the SoSES manager 30 synthesizes the data through the data synthesis algorithm and outputs a list of selected simulators and data obtained by pruning the synthesized data.

Table 3 shows each role of the SoSES manager 30.

2-4. Federate  Managers (40)

The federate manager 40 serves to manage the federate base 20. The federate manager 40 takes the information of each simulator from the federating base 20 and sends it to the synthesizer 50. On the other hand, the federate manager 40 receives simulator information from the synthesizer 50, And sends the simulated data to the federate base 20, and loads and executes each simulator in the federate base 20.

2-5. The synthesizer (50)

The synthesizer 50 serves to synthesize the federation. That is, when the information such as the simulator list and names and addresses of each simulator is received after the pruning and data synthesis from the SoSES manager 10, it is sent to each federate manager 40. In addition, it transmits the data information sent from the federate manager 40 to the SoSES manager 30 or receives the synthesized information and sends it back to the federate manager 40.

Then, when the federate manager 40 executes each simulator, it sends a command to the federate manager 40 to create a federation and join each simulator to the federation, and all the simulators When you join the federation, you start the simulation by giving the start command.

3. SoSES / FB  Environment

The SoSES / FB environment implemented based on the SoSES formalism and the SoSES / FB framework proposed in the present invention will be described. Since the interworking is based on a distributed environment, it is assumed that the environment in which the user performs overall control and the environment in which each simulator exists are connected by a network.

As shown in FIG. 9, there exists a SoSES manager together with a SoSES base in a PC where the user manages the overall progress, and there is a synthesizer that performs federation synthesis. In fact, the user can configure and edit SoSES through this PC, and control the federate manager through the network. Also, in each PC where a federate manager exists, there is a federate base along with a federate manager and stores the simulators, all of which are managed from the main PC. The Federated Base has a real simulator and data information.

In order to construct a complex system through these, and to automatically execute the actual federation, the synthesizer and the respective federate managers are executed, and the synthesizer and the respective federate managers are connected using the IP address and the port. The synthesizer then requests the Federator Manager for simulator names and addresses, and the Federate Manager sends the requested information back to the synthesizer. The synthesizer again sends the information to the SoSES manager. The SoSES manager then uses this information to construct the SoSES tree directly, or it invokes the SoSES tree in the SoSES base, maps the name of the simulator in the tree and the imported information so that the address of the simulator is known. After this, pruning process is performed and data synthesis process is performed. At this time, all information exchanged between the synthesizer and the federate manager is transmitted through the network.

The data synthesis is performed through the data synthesis algorithm according to the present invention. This process is shown in FIG. First, when the data synthesizer requests the SOM, the data information is sent to the network packet through each federate manager, and the SoSES tree is constructed using this information and the data is synthesized by the data synthesizer. At this time, it is determined whether or not the data is linked according to the data synthesis algorithm. If the data is interlocked, data synthesis is completed to generate a Federation Execution Data (FED) file, and the data is sent back to the federate manager through the network.

In the present invention, a framework for simulating multi-faceted system modeling of a hybrid system using IEEE 1516, namely SoSES / FB framework, has been proposed. Since the existing SES / MB framework, which is a multifaceted system modeling simulation framework, was a method for modeling and simulating a single system, there is a limitation in simulating a complex system. Accordingly, a new framework for a hybrid system is required, and the present invention proposes a SoSES / FB framework for modeling simulation of a hybrid system. Before proposing this framework, we propose a SoSES formalism that can represent all alternatives of a complex system in a tree form, and propose a federate base in which a simulator is stored.

As described above, according to the present embodiment, the SoSES / FB framework automates the process of synthesizing federation, thereby enhancing user convenience, shortening the time for federation development, and efficiently managing the structure of the simulator using the SoSES formalism And it is convenient to change the structure and to simulate various alternatives. Using these frameworks, various simulations in the field of defense can be applied to reduce costs, shorten development time, and enhance user convenience.

The methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Furthermore, the above-described file system can be recorded on a computer-readable recording medium.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

10: SoSES base
20: Federate base
30: SoSES Manager
40: Federate manager
50: synthesizer

Claims (9)

1. A system modeling simulation system for a system of systems sharing resources and capabilities between a plurality of single systems,
The system modeling simulation system includes:
Simulation of the complex system is performed through SoSES (System of Systems Entity Structure) / FB (Federate Base) framework
In the SoSES / FB framework,
A SoSES base for storing a System of Systems Entity Structure (SoSES) tree for the complex system;
A Federate Base for storing a simulator corresponding to the single system;
A synthesizer for synthesizing federations for the simulator through the SoSES base and the federate base;
A tree manager for managing a SoSES tree stored in the SoSES base, a pruner for pruning the SoSES tree, and a data synthesizer for retrieving and combining data of the simulator in the federate base SoSES Manager; And
A federate manager for transmitting information of each simulator stored in the federate base to the synthesizer, or transmitting information of each simulator according to a result of synthesis in the synthesizer to the federate base,
Including the
The synthesizer includes:
Forwarding the information of the simulator between the SoSES manager and the federate manager and forwarding a command to each federate manager to cause each simulator to join the federation and when all the simulators participate in the federation, To do
The system modeling simulation system comprising: The method according to claim 1,
The SoSES tree,
A SoSES tree configured by a user based on the list of simulators stored in the federate base or a SoSES tree configured by a domain expert or a Pruned Entity Structure (PES) tree generated by a pruning process Include
The system modeling simulation system comprising: The method according to claim 1,
Wherein the federate base comprises:
Storing a simulator that meets HLA (High Level Architecture) specifications based on IEEE 1516
The system modeling simulation system comprising: delete delete delete A system modeling simulation method of a system of systems sharing resources and capabilities among a plurality of single systems,
The system modeling simulation method includes:
A SoSES base for storing a System of Systems Entity Structure (SoSES) tree for the complex system;
A Federate Base for storing a simulator corresponding to the single system;
A synthesizer for synthesizing federations for the simulator through the SoSES base and the federate base;
A tree manager for managing a SoSES tree stored in the SoSES base, a pruner for pruning the SoSES tree, and a data synthesizer for retrieving and combining data of the simulator in the federate base SoSES Manager; And
A federate manager for transmitting information of each simulator stored in the federate base to the synthesizer, or transmitting information of each simulator according to a result of synthesis in the synthesizer to the federate base,
(System of Systems Entity Structure) / FB (Federate Base) framework,
Forwarding the information of the simulator between the SoSES manager and the federate manager and forwarding a command to each federate manager to cause each simulator to join the federation and when all the simulators participate in the federation, The starting phase;
A data synthesizing step of synthesizing data of the simulator selected by pruning the SoSES tree;
A federation synthesis step of synthesizing a federation for the selected simulator; And
When all of the selected simulators participate in the federation, a federation execution step
The method comprising: 8. The method of claim 7,
A simulator satisfying HLA (High Level Architecture) protocol based on IEEE 1516 is stored in the federate base
Wherein the system modeling simulation method comprises the steps of: 8. The method of claim 7,
Wherein the federation execution step comprises:
Interworking between simulators through interworking middleware
Wherein the system modeling simulation method comprises the steps of:

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