CN103514321A - General federal member applied to HLA distributed simulation method - Google Patents
General federal member applied to HLA distributed simulation method Download PDFInfo
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Abstract
The invention relates to a general federal member applied to an HLA distributed simulation method, and belongs to the field of the computer distributed simulation technology and application. The general federal member is composed of a federal member program and a simulation model, wherein the general member program is composed of a simulation dispatching module, a model interface and an HLA module. The federal member is connected with an HLA distributed simulation soft bus through the HLA module of the general federal member program, and interaction between the general federal member and the HLA RTI is achieved.
Description
Technical field
The general federal member that the present invention relates to a kind of HLA of being applied to distributed emulation, belongs to computer distribution type emulation technology and application.
Background technology
Computer Simulation is the indispensable link of each field of scientific study.Emulation technology has low cost, low time consumption and simple feature, for various theoretical researches and engineering design provide checking to support, and the application of accelerator theory achievement in research and deployment.Along with the development of the technical fields such as information, computing machine, communication, the Structure and Scale of system is day by day complicated, particularly in space flight, aviation, military affairs, traffic and economic dispatch field.It to the emulation of scale complex system, is the important research content of simulation technical field.Advanced distributed simulation technology provides effective approach for solving the emulation of scale complex system.
Senior architectural framework (HLA) is U.S. Department of Defense (DoD) for meeting one of important achievement in a series of current techique frameworks researchs that the emulation demand of military field scale complex system proposes, and has become IEEE1516 standard.HLA is a set of complete distributed simulation technology standard, and its core objective is to solve interoperability and the poor problem of reusability in traditional distributed emulation technology.HLA provides general, relatively independent emulation supporting by run time infrastructure (RTI), comprise realistic model management service, time management service and data distribution management service, realize separated that simulation algorithm, simulation run time management and distributed emulation bottom data transmit, each several part transparence, in analogue system, each several part can stand-alone development.
In HLA distributed emulation framework, an analogue system that completes particular dummy task is called federation (Federation).Federation comprises that the federal member (Federate) being distributed on different simulation computers forms, and they carry out simulation interactive by RTI, realize distributed collaboration and emulation.The groundwork that exploitation meets the analogue system of HLA is traditional realistic model to change into the simulation federation that meets HLA interface specification.
Common processing mode has two kinds, and one is write respectively the emulation nation person program of the standard that meets HLA for different realistic models; Its two, in certain usable range, write targetedly unified, general emulation nation person program.The former is more flexible, but needs Simulation Model Development personnel to grasp HLA protocol rule and DLL (dynamic link library), and development difficulty is large, efficiency is low, cannot realize reusability; The latter realizes general federal member within the scope of certain functional requirement.By general federal program realization, by HLA agreement, the interface with HLA protocol-independent to a standard transforms, thereby make nation person's program realize the conversion from HLA interface to model interface, make model development personnel not need to be familiar with HLA consensus standard, simplify the development difficulty of distributing emulation system.All nation persons in simulation federation use identical nation person's program, have increased nation person's reusability and the extensibility of system, have improved the development efficiency of the analogue system based on HLA.All nation persons have unified form, are convenient to realize Whole Course Management and the control of the analogue system based on HLA, are conducive to realize the United Dispatching of federal member, have simplified the development difficulty of simulation management federal member in distributing emulation system.
Summary of the invention
The present invention, in order to solve the problems such as the development difficulty of the distributing emulation system based on HLA is large and federal member reusability is low, proposes a kind of general federal member of the HLA of being applied to distributed simulation method.
The object of the invention is to be achieved through the following technical solutions.
A kind of general federal member that is applied to HLA distributed simulation method of the present invention, is comprised of general federal member program and realistic model two parts, and wherein general federal member program is comprised of emulation dispatch module, model interface and HLA module three parts.Federal member connects HLA distributed emulation flexible bus by the HLA module of general federal member program, and then realization and HLA run time infrastructure (RTI) is mutual.
Emulation dispatch module is that the core of general federal member program realizes, it realizes the operation control of realistic model and the input and output of obtaining model by model interface, by HLA module, realistic model is accessed to HLA flexible bus, realize the data interaction between model and time synchronized function in distributing emulation system.
Emulation dispatch module comprises emulator and controller.Emulator calls realistic model by model interface, realizes simulation calculation; Controller completes the operation of emulation and controls and scheduling by monitoring the behavior of emulator and HLA module and the interface of readjustment emulator and HLA module.
1. controller
Controller is in Central Position, and simulation run is controlled and scheduling is all realized by it; Meanwhile, in order to realize the separated of realistic model and HLA agreement, the data transmission of emulator and HLA intermodule also completes by controller, and emulator and HLA intermodule are without direct transmission.
Controller serves as the audiomonitor of emulator and HLA module, completes data transmission between the two and mutual.When emulator completes the simulation calculation task of realistic model, by the monitoring interface that calls controller and provide, undertaken that Data Update and time advance etc.Controller is received the action request of emulator, and the callback interface providing by calling HLA module upgrades the emulation of emulator to be transferred on HLA flexible bus by HLA model, and then transfers to RTI to process.In like manner, when HLA module is received from the data on HLA flexible bus and control information, call the monitoring interface that controller provides, the callback interface that is called emulator and provided by controller is transferred to emulator.
2. emulator
Emulator is mainly responsible for concrete simulation calculation function.First, controller calls the beginning emulation callback interface of emulator, and notice emulator starts emulation; Emulator calls by model interface the simulation calculation that realistic model completes a step-length; After calculating completes, by model interface, obtain the output of model, and call the monitoring interface of controller, by controller notice HLA module, completed the renewal of model output; The monitoring interface that emulator the calls control subsequently time of carrying out advances request, controller notice HLA module, and the time by HLA module by HLA protocol interface notice RTI model advances request.After the RTI agreement time advances, HLA module is called the monitoring interface of controller, is called the callback interface of emulator by controller, and notice emulator can carry out next step and advance, and emulator continues the calculating of next simulation step length, repeats.
3.HLA module
HLA module is mainly responsible for federal member with extraneous, i.e. the interworking of RTI.HLA module has realized necessary HLA protocol interface according to the regulation of HLA agreement, processes all and protocol-dependent work of HLA.HLA module provides controller corresponding callback interface, so that controller is pass on the information of emulator, comprises model data renewal and time propelling etc.HLA module is called the monitoring interface that controller provides, and the information from HLA flexible bus is passed to emulator.
4. realistic model
Realistic model is realized corresponding simulation algorithm according to concrete artificial tasks, and for emulator provides corresponding interface, emulator is completed simulation calculation, obtains emulated data and upgraded emulated data by these interfaces.
Beneficial effect
The invention provides the method for designing of general federal member in a kind of HLA distributing emulation system, solved the problem of Federation Design difficulty, there is following beneficial effect:
1. the invention provides a kind of design framework of general federal member, increase reusability, improve the development efficiency of analogue system.
2. the present invention adopts modular design, and each functions of modules of federal member is clear and definite, employing interface interconnects, and the inner extensibility of federal member self is strong, reduces nation person's the difficulty that realizes.
3. the present invention separates HLA agreement and the realistic model of realizing concrete artificial tasks and simulation algorithm by controller, HLA module and emulator, eliminate the coupled relation of realistic model and HLA agreement, realize realistic model and HLA protocol-independent, the development difficulty of simplified model, improves development efficiency.
4. based on HLA distributed system of the present invention, all federal members have consistent form and operation mechanism, are convenient to realize analogue system and simulation run time management, are convenient to build complicated analogue system.
5. based on HLA distributing emulation system of the present invention, be convenient to realize the extensibility of analogue system, only need simple number or the change realistic model that increases federal member.
6. based on the present invention, be convenient to set up the normalized HLA Distributed Simulation Platform of a set of unification, realize effective management of realistic model and other artificial resources.
Accompanying drawing explanation
Fig. 1 is the general federal member illustrative view of functional configuration in the present invention;
Fig. 2 is the mutual schematic diagram of each module of the general federal member in the present invention;
Fig. 3 is based on distributing emulation system implementation column of the present invention in concrete enforcement;
Embodiment
In order to illustrate objects and advantages of the present invention, the present embodiment is implemented to realize to foregoing invention.
General federal member program and the circular arc separatrix between realistic model of federal member represent that both are organically joined together to form federal member by interface.In the present embodiment, general federal program realizes with the form of executable program, and realistic model exists (such as dynamic link library or the COM of certain rule are set up) with the form of assembly, thereby makes both organically combinations, realizes the function of federal member.For this reason, the present embodiment is implemented content of the present invention by the interface between each ingredient of the general federal member of definition foregoing invention.A general federal member for HLA distributed simulation method, is comprised of general federal member program and realistic model two parts, as shown in Figure 1.Wherein general federal member program is comprised of emulation dispatch module, model interface and HLA module three parts.Federal member connects HLA distributed emulation flexible bus by the HLA module of general federal member program, and then realization and HLA run time infrastructure (RTI) is mutual.
Emulation dispatch module is that the core of general federal member program realizes, it realizes the operation control of realistic model and the input and output of obtaining model by model interface, by HLA module, realistic model is accessed to HLA flexible bus, realize the data interaction between model and time synchronized function in distributing emulation system.
Emulation dispatch module comprises emulator and controller.As shown in Figure 2, emulator calls realistic model by model interface, realizes simulation calculation; Controller completes the operation of emulation and controls and scheduling by monitoring the behavior of emulator and HLA module and the interface of readjustment emulator and HLA module.
1. controller
Controller is in Central Position, and simulation run is controlled and scheduling is all realized by it; Meanwhile, in order to realize the separated of realistic model and HLA agreement, the data transmission of emulator and HLA intermodule also completes by controller, and emulator and HLA intermodule are without direct transmission.
Controller serves as the audiomonitor of emulator and HLA module, completes data transmission between the two and mutual.When emulator completes the simulation calculation task of realistic model, by the monitoring interface that calls controller and provide, undertaken that Data Update and time advance etc.Controller is received the action request of emulator, and the callback interface providing by calling HLA module upgrades the emulation of emulator to be transferred on HLA flexible bus by HLA model, and then transfers to RTI to process.In like manner, when HLA module is received from the data on HLA flexible bus and control information, call the monitoring interface that controller provides, the callback interface that is called emulator and provided by controller is transferred to emulator.
2. emulator
Emulator is mainly responsible for concrete simulation calculation function.First, controller calls the beginning emulation callback interface of emulator, and notice emulator starts emulation; Emulator calls by model interface the simulation calculation that realistic model completes a step-length; After calculating completes, by model interface, obtain the output of model, and call the monitoring interface of controller, by controller notice HLA module, completed the renewal of model output; The monitoring interface that emulator the calls control subsequently time of carrying out advances request, controller notice HLA module, and the time by HLA module by HLA protocol interface notice RTI model advances request.After the RTI agreement time advances, HLA module is called the monitoring interface of controller, is called the callback interface of emulator by controller, and notice emulator can carry out next step and advance, and emulator continues the calculating of next simulation step length, repeats.
3.HLA module
HLA module is mainly responsible for federal member with extraneous, i.e. the interworking of RTI.HLA module has realized necessary HLA protocol interface according to the regulation of HLA agreement, processes all and protocol-dependent work of HLA.HLA module provides controller corresponding callback interface, so that controller is pass on the information of emulator, comprises model data renewal and time propelling etc.HLA module is called the monitoring interface that controller provides, and the information from HLA flexible bus is passed to emulator.
4. realistic model
Realistic model is realized corresponding simulation algorithm according to concrete artificial tasks, and for emulator provides corresponding interface, emulator is completed simulation calculation, obtains emulated data and upgraded emulated data by these interfaces.
5. controller
Monitoring interface in controller is divided into the monitoring interface relevant to emulator and the monitoring interface relevant with HLA module.
1) the monitoring interface relevant to emulator
I. Renewal model monitoring interface is worked as the evaluation work that emulator completes a simulation step length, need to carry out model modification, and new model information is transferred to other simulated members in distributing emulation system.Controller is monitored the model modification request of emulator, and this request is pass on and given HLA module.HLA module is submitted to model modification give RTI by HLA protocol interface.The input parameter of this interface is upgraded model information, and whether rreturn value is for being updated successfully.
Ii. the time advances and monitors interface in HLA distributing emulation system, and the time management of whole analogue system is responsible for by RTI.When emulator completes after the calculating and model information renewal work of a simulation step length, the time of carrying out advances request.The time that controller is monitored emulator advances request, and this request is pass on to the module to HLA, and RTI is submitted in the service being provided by HLA agreement by HLA module (interface).The input parameter of this interface is the time value that request advances, and whether rreturn value is to advance request to submit to successfully the time.
Iii. emulation has started to monitor interface when emulator is by suspending while recovering emulation, and controller is monitored this action of emulator, and is pass on the module to HLA.This monitors interface without input parameter and rreturn value.
Iv. emulation has suspended monitoring interface when emulator is adjusted into time-out by simulation run, and controller is monitored this action of emulator, and is pass on the module to HLA.This monitors interface without input parameter and rreturn value.
2) the monitoring interface relevant to HLA module
I. receive that model modification monitoring interface is in HLA distributing emulation system, if federal member has been ordered the data of other federal members, RTI can pass to subscriber in the Data Update information of other federal members, thereby forms the producer and consumer's pattern of data.In the present invention, the readjustment service interface that RTI provides by HLA agreement (this interface is by HLA module specific implementation) transfers to by the model modification from other federal members the federal member that order model upgrades.Controller is monitored HLA module and is received model modification, and this information is pass on and given emulator, by emulator, by model interface, the data of other models is transferred to realistic model.
Ii. the permission time advances the time propelling request that request monitoring interface RTI receives federal member, according to the time propelling situation of each federal member in federation, will notify federal member to allow its time to advance request.The readjustment service interface that RTI provides by HLA agreement (this interface is by HLA module specific implementation) the notice federal member time advances request to be allowed to.Controller is monitored the signal that HLA module is received the propelling request of permission time, and passs on and give emulator, and emulator carries out the artificial tasks of next simulation step length immediately.The input parameter of this monitoring interface is the time value being allowed to, rreturn value without.
Iii. simulation run is controlled and is monitored interface in HLA distributing emulation system, conventionally exists a federal member to be responsible for the operation of the whole federation of management specially, and this federal member is called as management federal member.In the present invention, to the operation of emulation control comprise emulation beginning, suspend, stop regulating with simulation velocity.RTI transfers to HLA module by the control information of management federal member.Controller is monitored the operation and control information that HLA module is received, and notifies emulator to move accordingly, such as suspending emulation, recover emulation, stop emulation or regulating simulation velocity.Emulation starts, suspends, stops monitoring interface, without input parameter and rreturn value; Regulating the input parameter of the monitoring interface of simulation velocity is the Timing factor, rreturn value without.
6. emulator
I. this interface of simulation initialisation interface is called by controller, and emulator is set up emulation in the realization of this interface, and completes the initial work of model.This interface is without input parameter, and rreturn value is for whether initialization is successful.
Ii. start this interface of emulation interface and called by controller, make emulator suspend and recover simulation run by emulation.This interface is without input parameter and rreturn value.
Iii. suspend this interface of emulation interface and called by controller, make emulator suspend emulation.This interface is without input parameter and rreturn value.
Iv., this interface of simulation velocity is set and by controller, is called, change simulation velocity.The input parameter of this interface is time scale factor, and single step computing time is that simulation step length is divided by time scale factor.This interface is without rreturn value.
V. the permission time advances this interface to be called by controller, allows emulator to carry out the artificial tasks of next simulation step length.This interface is without input parameter and rreturn value.
Vi. reflect from this interface of outside data and called by controller, by emulator, upgraded the input of realistic model.Conventionally, in HLA distributing emulation system, federal member need to be ordered the data (model provides in this federal member) of other federal members as the input data of realistic model.Controller listens to HLA module while receiving other emulation nation persons' new data, can call the input data that this interface is told emulator Renewal model.The input parameter of this interface is current other emulation nation persons' that receive data, and whether rreturn value is for being updated successfully.
7. model interface
I. this interface of model initialization interface is called by emulator, and realistic model is realized, and completes the initial work of model when simulation initialisation.The input parameter of this interface is the initialization data of model, and rreturn value is for whether initialization is successful.
Ii. this interface of model emulation stepping interface is called by emulator, and realistic model is realized.Each step-length in emulation, emulator calls this interface, completes the evaluation work of the current simulation step length of realistic model.The input parameter of this interface is that realistic model need to be advanced to obtain time value, and whether rreturn value is for advancing successfully.
Iii. this interface of mode input interface is called by emulator, and realistic model is realized, the input of Renewal model.The input parameter of this interface is mode input data, and whether rreturn value is updated successfully for inputting.
Iv. this interface of model output interface is called by emulator, and realistic model is realized, and obtains the current output data of model.When a simulation step length completes, emulator calls the output data that this interface obtains model, and issues new model data to other nation persons.This interface is without input parameter, the output data that rreturn value is model.
V. model stops this interface of interface and is called by emulator, and realistic model is realized, the last cleaning work to realistic model when completing emulation and finishing.This interface is without input parameter and rreturn value.
8.HLA module
I. the time advances this interface of request interface to be called by controller, and HLA module realizes, and HLA module submits to the time of federal member to advance request to RTI.The time value that input parameter advances for request, without rreturn value.
Ii. this interface of Renewal model information is called by controller, and HLA module realizes, and HLA submits model modification to RTI.The data of input parameter for upgrading, whether rreturn value is updated successfully for submitting to.
By defining above interface, the general federal member of a kind of HLA of being applied to distributed simulation method of the present invention is specifically implemented.Concrete implementation result as shown in Figure 3, comprises 4 federal members in figure, they are respectively federal member 1, federal member 2, federal member 3 and federal member 4; Federal member is connected with HLA distributed emulation run time infrastructure by the distributed flexible bus of HLA, forms distributing emulation system.Corresponding to content of the present invention, 4 federal members form by two parts, are respectively general federal member program and realistic model.General federal member program in federal member is identical, and realistic model different (such as federal member 1 comprises realistic model 1, federal member 2 comprises realistic model 2), thereby realize different simulation algorithms or artificial tasks.For this reason, there is above-mentioned beneficial effect.
Claims (5)
1. a general federal member that is applied to HLA distributed simulation method, is characterized in that: comprise general federal member program and realistic model.
2. a kind of general federal member that is applied to HLA distributed simulation method according to claim 1, is characterized in that: general federal member program is divided into three parts in function, is respectively model interface, emulation dispatch module and HLA module; Emulation dispatch module is that the core of general federal member program realizes, it realizes the operation control of realistic model and the input and output of obtaining model by model interface, by HLA module, realistic model is accessed to HLA flexible bus, realize the function such as the data interaction between model and time synchronized in distributing emulation system.
3. a kind of general federal member that is applied to HLA distributed simulation method according to claim 2, is characterized in that: emulation dispatch module comprises emulator and controller; Emulator calls realistic model by model interface, realizes simulation calculation; Controller completes the operation of emulation and controls and scheduling by monitoring the behavior of emulator and HLA module and the interface of readjustment emulator and HLA module.
4. a kind of general federal member that is applied to HLA distributed simulation method according to claim 2, is characterized in that: HLA module is mainly responsible for federal member with extraneous, i.e. the interworking of RTI; HLA module has realized necessary HLA protocol interface according to the regulation of HLA agreement, processes all and protocol-dependent work of HLA;
HLA module provides controller corresponding callback interface, so that controller is pass on the information of emulator, comprises model data renewal and time propelling etc.; HLA module is called the monitoring interface that controller provides, and the information from HLA flexible bus is passed to emulator.
5. a kind of general federal member that is applied to HLA distributed simulation method according to claim 1, it is characterized in that: realistic model is realized corresponding simulation algorithm according to concrete artificial tasks, and for emulator provides corresponding interface, emulator is completed simulation calculation, obtains emulated data and is upgraded emulated data by these interfaces.
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Application publication date: 20140115 |
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