CN1804804A - Distributed interactive simulation platform based on HLA and implementing method thereof - Google Patents
Distributed interactive simulation platform based on HLA and implementing method thereof Download PDFInfo
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Abstract
The invention relates to a distributing interactive simulation platform and its achieving method based on HLA which comprises: establishing the simulation edit and running control tool, the simulation server course, the simulation model package, the FOM base-like generator, the simulation two-dimension situation display tool, the simulation three-dimension visual tool, the simulation data recoding tool and the simulation experiment managing tool.
Description
Technical field
The present invention relates to a kind of distributed interactive simulation platform and its implementation, belong to the computer simulation technique field based on HLA.
Background technology
Along with the fast development of computer technology, the application of computer simulation technique more and more widely.Set up analogue system true to nature, need complicated mathematical model, the computer resource that these models take is increasing, can not satisfy the demand far away based on the emulation of single computer.The U.S. is that High Level Architecture (High Level Architecture the is called for short HLA) standard that distributed interactive simulation proposes has been accepted as international simulation standard.The distributed interactive simulation platform of setting up based on the HLA standard there are a lot of researchs both at home and abroad.But these researchs all are directly to carry out the exploitation of federal member based on the HLA interface standard.The HLA standard is a cover complex interface standard, the service that these interface specifications provide comprises six big classes: federation management service (20), statement management service (12), Object Management group service (17), time management service (23), entitlement management service (16), data distribution management service (12).The exploitation that the direct interface function that provides based on HLA carries out the distributed interactive simulation application system need all be grasped the interface function of above-mentioned various services, learning process is very difficult, programming levels requirement to the user is very high, and the development time of application system is also very long.And also not with experimental design, emulation repeatedly moves now, two dimension, three-dimensional representation, the integrated distributed interactive simulation platform implementation method that functions such as data recording and playback are direct and distributed interactive simulation merges.
Summary of the invention
Technology of the present invention is dealt with problems: the present invention proposes a kind of distributed interactive simulation platform and its implementation based on HLA.Distributed interactive simulation platform by this method is set up only needs 14 interface functions, just can finish the realization of federal member.The user does not need to understand the Simulation Application system development that the HLA interface specification just can meet the HLA standard.Simultaneously, with experimental design, analysis of simulation result, repeatedly functions such as operation, two and three dimensions demonstration, data recording and playback integrate, and form incorporate distributed interactive simulation platform.
Technical solution of the present invention: based on the distributed interactive simulation platform of HLA, be used for, realize distributed interactive simulation platform, it is characterized in that comprising on the basis of HLA simulation standard:
Simulation scenario editor and operation control tool, be used for simulation scenario editor and configuration, and carry out simulation run control alternately by the HLA flexible bus with the emulation servo progress, simulation scenario comprises what, being provided with etc. of federal member IP address of initial information, federal member;
The emulation servo progress, be positioned at the computing machine that participates in operation as federal member, mutual by HLA flexible bus and simulation scenario editor with operation control tool and realistic model wrapper, be used to finish federal initial creation, and, start and close the realistic model wrapper of all federal members that participate in this emulation automatically by receiving the startup that simulation scenario editor and operation control tool send and closing the federal member order; Include an emulation servo progress in each computing machine that participates in moving, and before operation is quoted in emulation, all need to start this process;
The realistic model wrapper is finished the packing to realistic model, generates 14 interface function standards, and this wrapper is finished with the emulation servo progress mutual as the agency of realistic model by the HLA flexible bus during simulation run; Each model wrapper and realistic model be with the form communication of dynamic link library, unified 14 interface function standards in the dynamic link library compliance with system.
FOM class libraries maker, be used for setting up the class libraries of all object class of analogue system, interactive class, class libraries exists with the form of dynamic link library, finish organization definition, the issue of object class, interactive class and order functions such as interface, FOM class libraries maker is an off-line tools, do not participate in the operation of emulation, only need before system's operation, use this instrument to generate the class libraries of various object class, interactive class, put into the simulation run catalogue and get final product;
The emulated data equipments of recording are finished all recording of informations in the simulation run by the HLA interface, and are stored in the log file, by open log file in the emulated data equipments of recording, can finish the omnidistance playback of simulation run;
The emulation experiment management tool, by the HLA interface emulation experiment scheme is designed, comprise number of run, experimental technique, the experiment factor, status data etc., and support analogue system according to the number of run operation that defines, in operational process, finish the collection of simulation result data, can also carry out the analysis of simulation result after the operation.
Also comprise emulation two-dimension situation show tools, receive object class, the interactive class information of all artificial physicals with the HLA interface, and be written into two-dimensional map and various entity icon, carrying out in real time according to the simulation run result, two dimension dynamically shows.
Also comprise emulation three-dimensional visualization instrument, be written into the three-dimensional modeling of artificial physical, and receive object class, the interactive class information of all artificial physicals, carry out real-time three-dimensional according to the simulation run result and dynamically show by the HLA interface.
Based on the distributed interactive simulation platform implementation method of HLA, its characteristics are:
(1) prefers editor and operation control tool transmission pattern initialization information is given the emulation servo progress, after the emulation servo progress is received initialization information, start corresponding model wrapper according to the requirement of initialization information;
(2) after each model wrapper starts,, prefer editor and operation control tool and receive the back and allow each model wrapper to be advanced to emulation 0 constantly to preferring editor and the operation control tool proposes to add federal requirement;
(3) the model wrapper is constantly to preferring editor and operation control tool transmitting time advances request event, prefers after editor and operation control tool receive the request of all model wrapper, advances the permission incident to their transmitting times; Simultaneously, the model wrapper sends to the model result data that produce in the operational process and prefers editor and operation control tool, by preferring editor and moving control tool the result is write the database preservation;
(4) after model running finished, proactive notification preferred editor and operation control tool, and this process circular flow is till this emulation finishes;
(5) then, prefer system's number of run that editor and operation control tool are determined according to experimental design tools, repeat said process, carry out the operational process second time, satisfy the requirement of experimental design up to number of run;
(6) prefer editor and operation control tool after emulation finishes, send emulation the finish command to the emulation servo progress, finish the model wrapper of all operations on this computing machine by the emulation servo progress, prefer simultaneously editor and the operation control tool will compile the simulation result data that produce in the whole simulation process, and merge and put in order, and deposit database in and use for the user according to consolidation form.
In addition, in the whole service process, two-dimentional show tools, 3-D display instrument, data recording and playback instrument can move in the adding system jointly.
The beneficial effect that the present invention compared with prior art has is:
(1) need not to grasp the HLA interface function and can finish Simulation Application system design and the realization that meets the HLA interface standard.Model after packing by the model wrapper has only 14 interface functions, is easy to study and management.
(2) platform is supported experimental design and repeatedly operation.In experimental design, integrated kinds of experiments method for designing.Design and repeatedly operation by experiment can be analysed scientifically the experiment factor, find the key parameter that influences system performance.
(3) distributed simulation operation management automatically.By this platform, can realize automatic startup, operation and the management of all federal members in the network.
(4) platform comprises two dimension, the 3-D display software module of supporting customization.The two dimension, the three-dimensional modeling that have comprised multiple artificial physical in the platform can directly use existing moulding to show.Platform performance interface is also supported the exploitation of newly-built moulding, has good extendability.
(5) simulation scenario and model initialization files are preserved with the form of XML file, have very strong versatility.
Description of drawings
Fig. 1 is a composition structured flowchart of the present invention, W representative model wrapper wherein, and Mij represents to run on i model of i platform;
Fig. 2 is that simulation scenario editor of the present invention and operation control tool are realized figure;
Fig. 3 is that emulation servo progress of the present invention realizes figure;
Fig. 4 is that realistic model wrapper of the present invention realizes figure;
Fig. 5 is that FOM class libraries maker of the present invention is realized figure;
Fig. 6 is that emulation two-dimension situation show tools of the present invention is realized figure;
Fig. 7 is that emulation three-dimensional visualization instrument of the present invention is realized figure;
Fig. 8 is that emulated data equipments of recording of the present invention realize figure;
Fig. 9 is that emulation experiment management tool of the present invention is realized figure;
Figure 10 is realization flow figure of the present invention.
Embodiment
As shown in Figure 1, the emulation tool that need set up of the present invention comprises simulation scenario editor and operation control tool, emulation servo progress, realistic model wrapper, FOM class libraries maker, emulation two-dimension situation show tools, emulation three-dimensional visualization instrument, emulated data equipments of recording, emulation experiment management tool.Total system as the base layer support technology, is finished the communication function of total system with the HLA flexible bus.Simulation scenario editor and operation control tool, two-dimentional show tools, 3-D display instrument, data recording instrument, experiment management instrument etc. can be distributed on the different machines in the network and move.Must start an emulation servo progress on every machine that needs moving model, wait for the issue of operation control command.After the emulation servo progress is received the simulation run control command, start the model wrapper on this machine automatically, the model quantity of moving on the quantity that starts the model wrapper and this machine is consistent.FOM class libraries maker is an off-line tools, does not participate in the on-line operation of analogue system, only need generate the class libraries of various object class, interactive class before system's operation with this instrument, puts into the simulation run catalogue and gets final product.
Simulation scenario editor among the present invention and operation control tool implementation at first are written into and prefer file as shown in Figure 2, and whether the judgment experiment design is finished.If do not finish the design that just experimentizes.After experimental design is finished, send startup and initialization model interactive class, wait for that preferring the model that comprises adds federal.All models add after federal and the initialization, and propulsion system simulation clock to 0 constantly.After this, the model wrapper is constantly to preferring editor and operation control tool transmitting time advances request event, prefers after editor and operation control tool receive the request of all model wrapper, advances the permission incident to their transmitting times.In system's operational process, if prefer editor and the operation control tool receive the model ending request, just finish the operation of this model, and make it to withdraw from federation execution.This process circulation is carried out, and finishes up to this simulation run.Begin operation for the second time then, till the number of run that experimental design is set.
Emulation servo progress implementation among the present invention as shown in Figure 3, at first, servo progress adds federal as federal member, waits for that emulation begins message.After receiving beginning message, receive the initialization data of model again, till the initialization data of all models all arrives; Then, for each model starts a model wrapper process, whole simulation system brings into operation; After receiving the emulation end that simulation scenario editor and operation control tool send, send the emulation end to all model wrapper, finish the operation of total system.
Realistic model wrapper implementation among the present invention as shown in Figure 4, in system, each model wrapper is represented a model, and participates in the operation of emulation as federal member.After the model wrapper started, the model of creation database added federation, sent with the operation control tool to the simulation scenario editor to be ready to message, waited for simulation scenario editor and the approval that moves control tool.After the approval message that receives simulation scenario editor and operation control tool, begin to carry out initialization operation.Comprise the model initialization, interface initialization is issued, ordered to object class, interactive class, to simulation scenario editor and operation control tool application next time of running,, just import all model incidents that listen in the current simulation step length then if obtain allowing, the propulsion model simulation clock, issue model state and incident, whether judgment models allows finishes, if there is not end of run, just proceed the process that the time advances, till operation finishes and applies for withdrawing from federation.During the model of development model wrapper packing, need under OO Integrated Development Environment, generate the dynamic link library engineering, in engineering, finish the statement and the realization of 14 interface functions.Like this, the model wrapper just can help model to finish all HLA interface functions by calling 14 interface functions in the model.
Model after packing by the model wrapper has only 14 interface functions, is easy to study and management, and 14 interface functions comprise:
(1) initialization interface (Modellnit): be used for initialization model, when each emulation, carry out once.Once the repeatedly in service of experiment can be carried out repeatedly;
(2) input parameter name query interface (QuerySub): model is told the demand of HLA flexible bus oneself to other model state data;
(3) output parameter name query interface (QueryPub): model is told the state fan-out capability of HLA flexible bus self;
(4) incoming event name query interface (QueryEventSub): model tells that HLA flexible bus oneself is interested in which incident;
(5) outgoing event name query interface (QueryEventPub): model tells HLA flexible bus oneself is prepared which incident of issue;
(6) result data name query interface (QueryResultField): model is told the result data title that the HLA flexible bus oneself can be exported;
(7) statistic behavior data name query interface (QueryStatField): model is told the statistic behavior data name that the HLA flexible bus oneself can be exported;
(8) incident input interface (InputEvent): the incident that other model that is used for the HLA flexible bus is received sends over is passed to local model;
(9) incident output interface (OutputEvent): be used for the incident that model produces is sent to the HLA flexible bus;
(10) example is ordered iterative computation interface (Step1): the simulation step length that is used to advance example order model (promptly only requiring the state input of other model instance);
(11) class is ordered iterative computation interface (Step2): the simulation step length that is used to advance class order model (promptly requiring the state input of a plurality of other model instances);
(12) statistic behavior data output interface (OutputStatValue): model is exported to the HLA flexible bus by the intermediateness data that this interface will need to add up, and the HLA flexible bus is responsible for being written in the model database according to the intermediateness data that experimental design information will be intended adding up;
(13) Debugging message output interface (OutputText): be used for Debugging message output, and send to as required on the HLA flexible bus with model;
(14) model data name space realizing interface (FreeNameMemory): be used for discharging the space that above interface is described the title array.
FOM class libraries maker among the present invention is an off-line tools, does not participate in the on-line operation of emulation.Each object class in the system and interactive class all need to generate corresponding class library with FOM class libraries maker.The implementation of FOM class libraries maker as shown in Figure 5.After the startup, at first read object class and interactive class masterplate under the respective directories, as the foundation that generates the class libraries source code.Select formation object class or interactive class by the user then, and the parameter of input object class or interactive class.After input finishes, according to the type and the parameter of input, generate the class libraries source code according to masterplate, the compilation tool that calls translation and compiling environment at last compiles automatically to source code, generates the FOM class libraries.The FOM class libraries that generates can directly be put in the platform and use.
Emulation two-dimension situation show tools implementation among the present invention as shown in Figure 6, the two-dimension situation show tools is made up of five modules, that is: user interactive module, emulated data module, entity supervisor module, management map module and presentation engine module.User interactive module mainly is responsible for carrying out alternately with the user, response user operation.It mainly is the form and the content of performance of control map background and solid data performance that the user operates.For example the convergent-divergent displayed map shows the longitude and latitude grid, shows the longitude and latitude of optional position, classification display entity icon, track, name etc.The emulated data module is responsible for setting up network on the one hand and is connected receiving network data.Network data mainly comprises object class and interactive class.Receive and resolve after the related data, revise entity supervisor module kind attributes of entities data on the one hand, add the performance order toward presentation engine on the other hand.Entity supervisor module is responsible for the preservation management, entity icon, the drafting of track, the demonstration of entity information of solid data.The main charge map background of management map module is drawn, especially to the amplification of optional position or dwindle demonstration.In addition, also to realize basic functions, that is: the mapping of physical location (generally being that longitude and latitude is represented) and the map location of pixels after drawing on the screen.The core of presentation engine module is a performance command buffer alignment.After the emulated data module received network data, such as the state renewal of guided missile position or the incident of release bait, it revised entity property value on the one hand, sends performance order to the presentation engine module simultaneously.Realize the interface drafting by these performance orders of presentation engine module invokes.
Emulation three-dimensional visualization instrument implementation among the present invention as shown in Figure 7, emulation three-dimensional visualization instrument is made up of four modules, that is: emulated data module, entity supervisor module, visual representing module and control module.The emulated data administration module is made of jointly emulated data engine and network data interface, is responsible for receiving the network-driven data, and data are resolved and cushioned, and offers visualization engine.The network data interface mainly is responsible for receiving the network simulation data, and its essence is exactly HLA object class and the interactive class according to the characteristics design of emulated data; The emulated data engine mainly is responsible for the data that network interface receives are resolved and cushioned, and the data that network interface receives can not be directly used in and drive scene, must resolve it, and being transformed into visualization engine can the recognition data structure.Entity supervisor module is made up of entity class, special efficacy class and entity management device.Entity class is responsible for defining the attribute information of a class pseudo-entity, and the special efficacy class is selected and decided the special representing effect relevant with such entity, and the entity management device then mainly manages and safeguard pseudo-entity, comprises newly-built, deletion and inquiry etc.System has defined an entity base class and special efficacy base class respectively for all entity class and special efficacy classes, defined these pseudo-entity classes publicly-owned some attribute informations and function, all entity class that the what comes into a driver's performance is related and special efficacy class are all derived from by these two base class, defined a list of entities class simultaneously, form the administering and maintaining of main users pseudo-entity with relevant tabulation handling function by a list of entities.The visual representing module mainly is responsible for the performance of virtual scene.Wherein, by the environmental data library storage the needed physical environment information of structure virtual scene, then preserved the geometric modeling and the texture information of all pseudo-entities by the moulding database, demonstration and scheduling by the visualization engine organizing scenario can directly show on output device.Control module comprises window message, control script and three parts of Control Engine, and main being responsible for carried out alternately with the user, response user operation.Window message is exactly the response function that the window operation information at the user provides, the control script then is meant the scene changeover program according to the characteristics design of concrete emulation content, so that effectively scene content is observed, Control Engine is a steering logic, it calls visualization engine, handoff scenario respectively according to the type of window message and the occurrence condition of control script.
Emulated data equipments of recording implementation among the present invention after the emulated data equipments of recording start, is at first read in the FED file that this simulation run needs as shown in Figure 8, therefrom finds out all object class and interactive class.Add federal then as the data recording federal member.Because the data recording instrument need all be noted all object class and the interactive class that produce in the simulation process, therefore need finish ordering of all object class, interactive class.Begin propelling after ordering along with simulation time, constantly intercept all federal members produce in the analogue system object class and interactive class, receive after the data by data management, data are transform as manageable data layout, and store in the corresponding data file, judge whether emulation finishes, if do not finish, just continue interception data, till emulation finishes.
Emulation experiment management tool implementation among the present invention as shown in Figure 9, the emulation experiment management tool is mainly finished two tasks: the one, select experimental technique for emulation repeatedly, comprise parallel laboratory test, experiment comprehensively, orthogonal design and uniform Design method; The 2nd, according to the needs that the user investigates, provide the output field that characterizes each model function, comprise intermediate result field and crucial output field.Automatically the input information that the experiment of packing into when the emulation experiment management tool is opened prefers comprises all model names, and the factor of corresponding model needs the state variable of investigation and result's complete or collected works.The experimental needs of user, at first set experimental unit, experiment purpose, experimental period, each tests number of run, force information such as the finish time, select experimental technique then, the model that selection will be investigated, state, the result, the experiment factor and the value of establishing that selection will be investigated, last emulation experiment management tool returns set information, the experimental technique that comprises selection, the number of run of each experiment, the aggregate level number of times of experiment, force to finish the time of this experiment, experimental period, experimental unit, experiment purpose, the factor names that needs investigation, the status data title, the result data title, factor level value two-dimensional array etc., and these information save as the experiment prefer.The information-driven system that the user set during simulation scenario editor and operation control tool preferred according to experiment repeatedly moves, the simulation result that is repeatedly moved, and the result is saved in the corresponding database.
Total system implementation of the present invention as shown in figure 10, prefer editor and operation control tool transmission pattern initialization information to the emulation servo progress, after the emulation servo progress is received initialization information, start corresponding model wrapper according to the requirement of initialization information.After each model wrapper starts,, prefer editor and operation control tool and receive the back and allow each model wrapper to be advanced to emulation 0 constantly to preferring editor and the operation control tool proposes to add federal requirement.After this, the model wrapper is constantly to preferring editor and operation control tool transmitting time advances request event, prefers after editor and operation control tool receive the request of all model wrapper, advances the permission incident to their transmitting times.Simultaneously, the model wrapper sends to the model result data that produce in the operational process and prefers editor and operation control tool, by preferring editor and moving control tool the result is write the database preservation.After model running finished, proactive notification preferred editor and operation control tool.This process circular flow is till this emulation finishes.Then, prefer system's number of run that editor and operation control tool are determined according to experimental design tools, repeat said process, carry out the operational process second time, satisfy the requirement of experimental design up to number of run.Prefer editor and operation control tool after emulation finishes, send emulation the finish command, finish the model wrapper of all operations on this computing machine by the emulation servo progress to the emulation servo progress.Prefer editor and the operation control tool will compile the simulation result data that produce in the whole simulation process, and merge and put in order, and deposit database in and use for the user according to consolidation form.In the whole service process, two-dimentional show tools, 3-D display instrument, data recording and playback instrument can move in the adding system jointly.
Claims (8)
1,, it is characterized in that comprising based on the distributed interactive simulation platform of HLA:
Simulation scenario editor and operation control tool are used for simulation scenario editor and configuration, and carry out simulation run control with the emulation servo progress alternately by the HLA flexible bus;
The emulation servo progress, be positioned at the computing machine that participates in operation as federal member, mutual by HLA flexible bus and simulation scenario editor with operation control tool and realistic model wrapper, be used to finish federal initial creation, and, start and close the realistic model wrapper of all federal members that participate in this emulation automatically by receiving the startup that simulation scenario editor and operation control tool send and closing the federal member order;
The realistic model wrapper is finished the packing to realistic model, generates 14 interface function standards, and this wrapper is finished with the emulation servo progress mutual as the agency of realistic model by the HLA flexible bus during simulation run;
FOM class libraries maker, be used for setting up the class libraries of all object class of analogue system, interactive class, class libraries exists with the form of dynamic link library, finish organization definition, the issue of object class, interactive class and order interface function, FOM class libraries maker is an off-line tools, do not participate in the operation of emulation, only need before system's operation, use this instrument to generate the class libraries of various object class, interactive class, put into the simulation run catalogue and get final product;
The emulated data equipments of recording are finished all recording of informations in the simulation run by the HLA interface, and are stored in the log file, by open log file in the emulated data equipments of recording, can finish the omnidistance playback of simulation run;
The emulation experiment management tool, by the HLA interface emulation experiment scheme is designed, comprise number of run, experimental technique, the experiment factor, status data etc., and support analogue system according to the number of run operation that defines, in operational process, finish the collection of simulation result data, carry out the analysis of simulation result after the operation.
2, the distributed interactive simulation platform based on HLA according to claim 1, it is characterized in that: also comprise emulation two-dimension situation show tools, receive object class, the interactive class information of all artificial physicals with the HLA interface, and be written into two-dimensional map and various entity icon, carrying out in real time according to the simulation run result, two dimension dynamically shows.
3, the distributed interactive simulation platform based on HLA according to claim 1, it is characterized in that: also comprise emulation three-dimensional visualization instrument, be written into the three-dimensional modeling of artificial physical, and receive object class, the interactive class information of all artificial physicals by the HLA interface, carry out real-time three-dimensional according to the simulation run result and dynamically show.
4, the distributed interactive simulation platform based on HLA according to claim 1 is characterized in that: simulation scenario comprises what, the setting of federal member IP address of initial information, federal member.
5, the distributed interactive simulation platform implementation method based on HLA according to claim 1, it is characterized in that: described each model wrapper and realistic model be with the form communication of dynamic link library, unified 14 interface function standards in the dynamic link library compliance with system.
6, the distributed interactive simulation platform based on HLA according to claim 1 is characterized in that: include an emulation servo progress in described each computing machine that participates in moving, and all need to start this process before operation is quoted in emulation.
7, the distributed interactive simulation platform based on HLA according to claim 1 is characterized in that: described simulation scenario and model initialization files are preserved with the form of XML file.
8, based on the distributed interactive simulation platform implementation method of HLA, it is characterized in that:
(1) prefers editor and operation control tool transmission pattern initialization information is given the emulation servo progress, after the emulation servo progress is received initialization information, start corresponding model wrapper according to the requirement of initialization information;
(2) after each model wrapper starts,, prefer editor and operation control tool and receive the back and allow each model wrapper to be advanced to emulation 0 constantly to preferring editor and the operation control tool proposes to add federal requirement;
(3) the model wrapper is constantly to preferring editor and operation control tool transmitting time advances request event, prefers after editor and operation control tool receive the request of all model wrapper, advances the permission incident to their transmitting times; Simultaneously, the model wrapper sends to the model result data that produce in the operational process and prefers editor and operation control tool, by preferring editor and moving control tool the result is write the database preservation;
(4) after model running finished, proactive notification preferred editor and operation control tool, and this process circular flow is till this emulation finishes;
(5) then, prefer system's number of run that editor and operation control tool are determined according to experimental design tools, repeat said process, carry out the operational process second time, satisfy the requirement of experimental design up to number of run;
(6) prefer editor and operation control tool after emulation finishes, send emulation the finish command to the emulation servo progress, finish the model wrapper of all operations on this computing machine by the emulation servo progress, prefer editor and the operation control tool will compile the simulation result data that produce in the whole simulation process, and merge and put in order, and deposit database in and use for the user according to consolidation form.
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