CN102662681A - Distributed simulation general supporting platform based on high level architecture (HLA) and implementation method thereof - Google Patents
Distributed simulation general supporting platform based on high level architecture (HLA) and implementation method thereof Download PDFInfo
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Abstract
The invention discloses a distributed simulation general supporting platform based on high level architecture (HLA) and an implementation method thereof. The distributed simulation general supporting platform and the implementation method of the distributed simulation general supporting platform are designed for solving the problem that an existing real-time interface (RTI) is complicated in application. The distributed simulation general supporting platform based on the HLA comprises an RTI gateway unit with a layered distribution structure, an RTI local process unit and an interface function library unit, achieves simulation federal management service, simulation member statement management service, simulation object management service, simulation time management service, ownership management service, data distribution management service, auxiliary operation supporting service, and cooperates with simulation operation monitoring tools. The distributed simulation general supporting platform based on the HLA and the implementation method of the distributed simulation general supporting platform effectively reduce network data stream and facilitate control and coordination of global data. Users can achieve HLA standard interface service easily by calling federal ambassador classes and federal member ambassador classes. The distributed simulation implementation method based on the HLA is reasonable in process, and improves simulation information transferring speed.
Description
Technical field
The present invention relates to a kind of distributed emulation support platform general-purpose and its implementation, belong to the computer simulation technique field based on HLA.
Background technology
Along with computing machine and fast development of information technology, computer simulation technique is paid close attention to by people gradually, and computer simulation technique is widely used in fields such as space flight, aviation, manufacturing, traffic, the energy.Meanwhile, the problem that Computer Simulation is faced also becomes increasingly complex, and single analogue system often can't satisfy the demands, and distributed emulation has become a main developing direction calculating the emulation field.
HLA (High Level Architecture; High Level Architecture) is a de facto standard of present distributed emulation; Utilize standard criterion, operational support system, OSS (Runtime Infrastructure, RTI) and the object model template can realize the interoperability between each simulated members, for distributed emulation provides a simulated environment with irrespective of geographical position; Thereby reduced the complicacy of distributed emulation exploitation, improved the reusability of interoperability, portability and code.
Based on wide area network operation, the intergration model of multilayer federation, the dynamic reuse of artificial resource is that present complex product collaborative design and emulation further develop the subject matter that faces, the existing requirement that can't satisfy higher degree based on the emulation back-up environment of HLA.
Summary of the invention
In order to overcome above-mentioned defective, the present invention provides a kind of federal member that makes to add distributed emulation support platform general-purpose and its implementation based on HLA that emulation is carried out neatly.
For achieving the above object; On the one hand; The present invention provides a kind of distributed emulation support platform general-purpose based on HLA; This support platform adopts layered distribution type structure, comprises the RTI local process unit, RTI gateway unit and the interface function library unit that connect successively, and said interface function library unit connects federal member; Wherein,
The RTI gateway unit communicates initialization to federal member;
The request from federal member and RTI server is monitored in RTI local process unit;
The interface function library unit provides the various services request of HLA to federal member;
Said support platform realizes following service according to the interface specification of HLA (High Level Architecture):
The service of emulation federation management is accomplished and is created, dynamically controls, revises and the deletion federation execution;
Simulated members statement management service, virtual experimental require each member who participates in federation execution to state that to collaborative simulation operation interoperability support system it requires the data content that produces, and/or the data content that receives;
The simulation object management service, the registration of one group of service processing object, modification, deletion and attribute/mutual transmission and reception, object is through sending the attribute renewal or coming transmission object status information or incident alternately;
The simulation time management service; Each member of control is provided the propelling on the simulation time axle, makes collaborative simulation operation interoperability support system advance time, mode and order will be transmitted to corresponding member with the federal member that support system is set from member's incident;
The entitlement management service is responsible for the proprietorial transfer of object instance attribute between federal interior member, and said transfer is used for supporting the cooperation modeling of federal interior object instance;
The data distribution management service realizes that federal member provides the minimizing of transmitting and accepting the unnecessary consumption of extraneous data.
Particularly, said simulated members statement management service provides the information of related data on the granularity of generic attribute, and data distribution management service refining data restrictive condition retrains from the granularity of instance properties.
Particularly, the service that provides of said support platform also comprises:
Auxiliary operation supporting, collection has been described the federal employable service that comprises setting, operation domain related service and the RTI start-stop of the conversion of title and handle, multiple switch of member of participating in;
Collaborative simulation operation monitoring instrument provides emulation federal state in the simulation run process.
Particularly, according to HLA interface specification IEEE1516 exploitation, use C Plus Plus to realize the standards service and the interface of the definition of HLA interface specification.
On the other hand, the present invention provides a kind of implementation method of the distributed emulation based on HLA, and this method comprises the steps:
Open the RTI gateway process, the data interaction in establishment, destruction and the federation execution process of management federation;
Each federal member through with the communication initialization of RTIGate, join in the corresponding federation;
At the beginning of a federal member began to add federation, the RTIAmb process can start on the backstage automatically, and AM automatic monitoring is from the request of member's program and RTI server;
LibRTI provides the various services request of HLA through RTIAmb to federal member, and the federal member process is submitted to RTIAmb through local socket with request;
RTIGate receives the RTIAmb sent request, and it is handled, and then with the RTIAmb of the corresponding federal member of message informing, supplies this federal member to carry out Simulation Application.
Particularly, federal member calls the RTI service through libRTI and communicates with RTIAmb, and means of communication adopts Windows TCP Socket.
The distributed emulation support platform general-purpose that the present invention is based on HLA is made up of RTIAmb, RTIGate and libRTI, has reduced the data traffic of network effectively, makes things convenient for the control and the coordination of global data.The present invention adopts standard C ++ and write, the user can be through calling federal ambassador's class and federal member ambassador class relatively easily realizes the service of HLA standard interface.
The implementation method flow process of distributed emulation that the present invention is based on HLA is reasonable, has improved the information transmission speed of emulation.
Description of drawings
Fig. 1 is the composition structural drawing of the preferred embodiment of the present invention.
Fig. 2 is a preferred embodiment RTIAmb service call cooperation synoptic diagram shown in Figure 1.
Embodiment
Below in conjunction with Figure of description and embodiment the present invention is done detailed description.
Preferred embodiment one: as shown in Figure 1, the preferred embodiment of distributed emulation support platform general-purpose that the present invention is based on HLA has been realized 6 big management service and the auxiliary operation services of HLA according to the standard criterion of IEEE1516.
Federation management is one of six big management functions of RTI, also is based on the problem that the program design of HLA must at first be faced.Federation management mainly comprises following task: the process of federation execution life cycle (is created federation execution; Federal member adds federation execution; Federal member withdraws from federation execution and cancels federation execution), manage the synchronous points of federal scope, realize preservation and recovery of federal scope etc.
The statement management is the basis of RTI data management.The statement management mainly comprises announcement, orders and supports control function.In HLA, each federal member must be announced the object class and the interactive class of its schedule regeneration, and orders its interested object class and interactive class.
Object Management group is on the basis of statement management, to carry out.It comprises the registration and the discovery of object instance, the renewal of object instance attribute and reflection, the transmission of mutual instance and reception etc.Comprise the object control method that some are additional in addition, the instance properties value is upgraded and the transmission mode of mutual instance as changing, and the management of the appropriateness suggestion that instance properties is upgraded is to the management of the appropriateness suggestion of instance properties scope etc.
Time management is one of core content of RTI, and in the federal operational process, the user can be through the time management strategy of RTI service dynamically change federal member.Time management comprises the setting of time strategy, management that the time advances and the assistant service that some are corresponding.
The entitlement management is on the basis of statement management and Object Management group, to carry out.Entitlement management to as if federation execution in the entitlement of instance, only have the proprietorial federal member of instance properties and just have the right to upgrade this instance properties value, therefore can utilize entitlement to manage the collaborative modeling of supporting between the federation management member.According to passing of title promoter's difference, the entitlement management comprises " pushing away " pattern, " drawing " pattern and some assistant services.Under " pushing away " pattern, the federal member of initiating the passing of title initiatively requires " transfer " its part instance properties entitlement that has; Under " drawing " pattern, the federal member of initiating the passing of title then initiatively requires the instance properties entitlement of " obtaining " its appointment.
Data distribution management provides a data filter mechanism flexibly, makes federal member can further dwindle the demand of announcing and ordering, thereby expands the data distribution ability of RTI effectively.Data distribution management comprises establishment, modification, the deletion for the zone, the related service of region.
Except 6 big management services, the service of auxiliary operation supporting tool provides federal state for the emulation personnel, is convenient to the user and keeps watch on, and guarantees security of system, controllably operation.The state that emulation is federal; Specifically comprise: the federal essential information of emulation (comprising the federal title of emulation, handle, federal member quantity etc.); Emulation federal member essential information (comprising federal member title, handle value etc.); FOM information (object class and the interactive class information that comprise all definition), each federal member logical time propulsion information, the interactive information in the federal operational process (comprises federal member issue and subscription; Mutual object instance attribute and mutual instance in the subscriber simulation), configuration information etc.
The distributed emulation support platform general-purpose that the present invention is based on HLA mainly is made up of three parts: RTI local process unit (RTIAmb), RTI gateway unit (RTIGate) and interface function library unit (libRTI).
Wherein, libRTI is a C++ storehouse, and it provides a series of services of HLA interface specification definition for the federal member developer.The member calls the RTI service through libRTI and communicates with RTIAmb, and means of communication adopts Windows TCP Socket.The HLA interface specification has confirmed that libRTI offers the service of federal member and the responsibility that each federal member should be born to federation.In libRTI; Ambassador's RTI class (RTI::RTIAmbassador) has encapsulated the service that provided by RTI (promptly define and realize the needed interface of communicating by letter with RTI of federal member); All are all realized with the method for calling ambassador's RTI class function by the request to RTI that federal member proposes.Ambassador's member class (RTI::FederateAmbassador) also is the part of libRTI; It is an abstract class; It has confirmed the call back function (promptly defining and the interface of communicating by letter with federal member of realizing that RTI is required) that each federal member must provide, and these functions are used by the RTI readjustment.Each federal member must be implemented in the function of stating in ambassador's member class according to concrete Simulation Application, through libRTI, and federation execution asynchronous response member's request.
Each federal member all will communicate through a RTIAmb process and RTI server in this locality, and at the beginning of a federal member began to add federation, the RTIAmb process can start on the backstage automatically, and AM automatic monitoring is from the request of member's program and RTI server.
RTIAmb is a main function components of the present invention, between federal member and RTIGate, monitors and management message transmission between the two.The management federal member adding and withdraw from, for the support of data communication and coordinated operation is provided between the federal member.Each federal member all will communicate through a RTIAmb process and RTI server in this locality, and at the beginning of a federal member began to add federation, the RTIAmb process can start on the backstage automatically, and AM automatic monitoring is from the request of member's program and RTI server.
RTIAmb has realized federation management, statement management, Object Management group, entitlement management, time management and the six types of services of data distribution management in the HLA interface specification; Request and interaction data to federal member are handled and are filtered, and mail to server RTIGate to request through network linking.
The Communications class is abstract and encapsulated the various communication modes between RTIAmb and federal member, the RTIGate.And derive concrete communication linkage objects such as TCPSocket, UDPSocket, SecureTCPSocket, to support different chaining services.
Message queue class Queues mainly carries out the management of message queue, safeguards two message queues: by receiving the message queue RO that distributes and pressing the message queue TSO of time stamp distribution.
The RootObject class is the base class of HLA object class, mainly is used for reflecting the SOM structure of this federal member: include object class tabulation, object instance and interactive class tabulation, and relevant with it routing space and zone etc.
As shown in Figure 2; With the statement management service is example; When RTIAmb receives the member when asking, the service in need type of calling Queues gets into message queue, when handling the member and ask; RTIAmb need call corresponding service processing, and the message that will handle through type of calling Communications sends to RTIGate.
RTIGate of the present invention is an overall process, is the central processing node of TH_RTI, is used for safeguarding the running status of whole federation.Before the operation federation execution, at first open this process, major function is the data interaction in management federal establishment, destruction and the federation execution process, promptly federal object model FOM.The 2nd, can manage a plurality of different federations, the 3rd, the management of some global datas, for example time control and management (LBTS management) also runs on RTIGate.Time management among LBTS management and the RTIAmb realizes the time management in the federal scope jointly.Each federal member through with the communication initialization of RTIGate, join in the corresponding federation.
The service call cooperating process of RTIGate is: RTIGate receives the RTIAmb sent request; Type according to request is handled; Giving message informing then need be to the local RTI agent process RTIAmb of the federal member of this message response, and then is reflected in the Simulation Application of this federal member.
RootObject class among the RTIGate is identical with RootObject structure among the RTIAmb, but it is the federal object model FOM of record, is responsible for the data interaction in the whole federal scope.
This preferred embodiment is made up of RTIAmb, RTIGate and libRTI based on the distributed emulation support platform general-purpose of HLA, has reduced the data traffic of network effectively, makes things convenient for the control and the coordination of global data.The present invention adopts standard C ++ and write, the user can be through calling federal ambassador's class and federal member ambassador class relatively easily realizes the service of HLA standard interface.
Preferred embodiment two: the distributed emulation support platform general-purpose that the present invention is based on HLA adopts layered distribution type structure; Comprise the RTI gateway unit, RTI local process unit and the interface function library unit that connect successively, said interface function library unit connects federal member.Implementation method based on the distributed emulation of HLA comprises the steps:
Open the RTI gateway process, the data interaction in establishment, destruction and the federation execution process of management federation;
Each federal member through with the communication initialization of RTI gateway unit, join in the corresponding federation;
At the beginning of a federal member began to add federation, the RTI local process can start on the backstage automatically, and AM automatic monitoring is from the request of member's program and RTI server;
The interface function storehouse provides the various services request of HLA through the RTI local process to federal member, and the federal member process is submitted to the RTI local process through local socket with request;
The RTI gateway receives RTI local process sent request, and it is handled, and then with the RTI local process of the corresponding federal member of message informing, supplies this federal member to carry out Simulation Application.
Wherein, federal member communicates with the RTI local process through interface function library call RTI service, and means of communication adopts Windows TCP Socket.
This preferred embodiment is reasonable based on the implementation method flow process of the distributed emulation of HLA, has improved the information transmission speed of emulation.
More than; Be merely preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (6)
1. distributed emulation support platform general-purpose based on HLA; It is characterized in that; Said support platform adopts layered distribution type structure, comprises the RTI gateway unit, RTI local process unit and the interface function library unit that connect successively, and said interface function library unit connects federal member; Wherein,
The RTI gateway unit communicates initialization to federal member;
The request from federal member and RTI server is monitored in RTI local process unit;
The interface function library unit provides the various services request of HLA to federal member;
Said support platform realizes following service according to the interface specification of HLA:
The service of emulation federation management is accomplished and is created, dynamically controls, revises and the deletion federation execution;
Simulated members statement management service, virtual experimental require each member who participates in federation execution to state that to collaborative simulation operation interoperability support system it requires the data content that produces, and/or the data content that receives;
The simulation object management service, the registration of one group of service processing object, modification, deletion and attribute/mutual transmission and reception, object is through sending the attribute renewal or coming transmission object status information or incident alternately;
The simulation time management service; Each member of control is provided the propelling on the simulation time axle, makes collaborative simulation operation interoperability support system advance time, mode and order will be transmitted to corresponding member with the federal member that support system is set from member's incident;
The entitlement management service is responsible for the proprietorial transfer of object instance attribute between federal interior member, and said transfer is used for supporting the cooperation modeling of federal interior object instance;
The data distribution management service realizes that federal member provides the minimizing of transmitting and accepting the unnecessary consumption of extraneous data.
2. the distributed emulation support platform general-purpose based on HLA according to claim 1; It is characterized in that: said simulated members statement management service provides the information of related data on the granularity of generic attribute; Data distribution management service refining data restrictive condition retrains from the granularity of instance properties.
3. the distributed emulation support platform general-purpose based on HLA according to claim 1 is characterized in that, the service that said support platform realizes also comprises:
The employable service of federal member is described in auxiliary operation supporting, comprises setting, operation domain related service and the RTI start-stop of the conversion of title and handle, multiple switch;
Collaborative simulation operation monitoring instrument provides emulation federal state in the simulation run process.
4. the distributed emulation support platform general-purpose based on HLA according to claim 1 is characterized in that: said support platform uses C Plus Plus to realize the standards service and the interface of the definition of HLA interface specification according to HLA interface specification IEEE1516 exploitation.
5. the implementation method based on the distributed emulation of HLA is characterized in that, comprises the steps:
Open the RTI gateway process, the data interaction in establishment, destruction and the federation execution process of management federation;
Each federal member through with the communication initialization of RTI gateway unit, join in the corresponding federation;
At the beginning of a federal member began to add federation, the RTI local process can start on the backstage automatically, and AM automatic monitoring is from the request of member's program and RTI server;
The interface function storehouse provides the various services request of HLA through the RTI local process to federal member, and the federal member process is submitted to the RTI local process through local socket with request;
The RTI gateway receives RTI local process sent request, and it is handled, and then with the RTI local process of the corresponding federal member of message informing, supplies this federal member to carry out Simulation Application.
6. the implementation method of the distributed emulation based on HLA according to claim 5 is characterized in that: federal member communicates with the RTI local process through interface function library call RTI service, and means of communication adopts Windows TCP Socket.
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| CN112217664B (en) * | 2020-09-22 | 2023-05-02 | 江汉大学 | Distributed parallel simulation method, device and system based on autonomy |
| CN112256386A (en) * | 2020-09-24 | 2021-01-22 | 北京天源迪科信息技术有限公司 | Simulation operation support system |
| CN112764356A (en) * | 2020-12-23 | 2021-05-07 | 郑州通晓数据技术有限公司 | Control method, device, equipment and storage medium of simulation system |
| CN113746683A (en) * | 2021-09-15 | 2021-12-03 | 北京航空航天大学 | Interconnection, intercommunication and interoperation simulation method under cross-domain environment |
| CN115048761A (en) * | 2022-03-25 | 2022-09-13 | 中国航空无线电电子研究所 | HLA-based meteorological federal member design method |
| CN115048761B (en) * | 2022-03-25 | 2024-05-07 | 中国航空无线电电子研究所 | HLA-based meteorological federal member design method |
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