CN102982197A - Multi-domain collaborative distribution type simulation system - Google Patents
Multi-domain collaborative distribution type simulation system Download PDFInfo
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Abstract
The invention provides a multi-domain collaborative distribution type simulation system comprising a main control module, a data service module and a model interface module. The main control module is used for loading description documents of a preset model to obtain corresponding model information, setting clock fundamental frequency according to the model information, issuing the clock fundamental frequency and simulation control demands, arranging data transmission channels between the models in the data service module according to the model information, and defining data update periods of data channels. The data service module is used for establishing a data link which has an independent data transmission period, and providing the data channels for collaborative distribution type simulation data. The model interface module is used for establishing a connection relationship and schedule management of the main control module and a simulation sub-engine, and sending the clock fundamental frequency and the simulation control demands to the simulation sub-engine to complete calculation of the corresponding models. The multi-domain collaborative distribution type simulation system supports derivation of all simulation soft wares, and has the advantages of being high in calculation precision of collaborative simulation and high in calculation efficiency, and collaborative simulation is not prone to be caused.
Description
Technical field
The present invention relates to a kind of multi-field collaborative distributed analogue system, belong to engineering system digital distribution formula collaborative simulation technical field.
Background technology
Engineering system (comprising aircraft, guided missile, satellite, automobile etc.) is comprised of the subsystem of the different field such as mechanical, electric, hydraulic pressure, fuel oil, ring control usually, so usually need the modeling and simulating software (such as Matlab/Simulink, ADAMS, Simplorer, Flowmaster, AMESim etc.) of various different field to carry out systematic analysis in the design phase.And influence each other between the subsystem of different field, so need the simulation software of different field to carry out the function that collaborative simulation analysis is finished large system analysis.
And its modeling mechanism of the simulation software of different field, calculation method are all different, and it is also uncontrollable to resolve the common outside of step-length, and software clock is also independent separately, and this has just increased the difficulty of each simulation software collaborative simulation.And each simulation software operates on the different computing machines usually, and moves different operating system, and most softwares itself are not supported the distributed data transmission, and this makes distributed collaboration emulation more difficult.
The existing system that carries out multi-field collaborative simulation all adopts the model that different software is set up to be embedded among the Matlab/Simulink by forms such as S functions at present, become the submodel of Simulink, then resolve by the solver of Simulink or the embedded solver that carries, clock advances and data interaction is finished by Simulink, and there are the following problems for this collaborative simulation pattern:
1. not every simulation software all can be packaged into the model under the Simulink and support to derive, and this has just limited the kind of collaborative simulation software;
2. different simulation softwares use the solver that is fit to this neighborhood system model that carries usually, this solver when deriving owing to break away from separately simulation software independent operating, its function is to some extent cutting all, and this will affect the calculation accuracy of collaborative simulation, even causes resolving failure;
Different simulation softwares to resolve step-length all different, and most variable steps that adopt resolve, and this pattern that is embedded into Simulink, it resolves step-length and is specified by Simulink, Simulink must arrange step-length just can make collaborative simulation normally resolve for the needed minimum step of all Software Create models, this has not only had a strong impact on and has resolved efficient, and may bring unnecessary numerical error;
4. the pattern that is embedded into Simulink can't be carried out distributed emulation usually, and the unit simulation and calculation time is received the restriction of CPU, thereby cause the resolving time long, and receive that Simulink resolves the impact of the software stability that causes for a long time, causes resolving failure easily;
5. because differences such as different software simulation step length, system's initial values, the pattern of this Simulink of being embedded into can't realize the inside and outside difference compensation of the data between the different step-length models, thereby model in data exchange process is because the sudden change of input data causes system rigidity, causes the part to resolve failure and causes collaborative simulation failure;
6. encapsulate owing to being embedded into the model of Simulink pattern with the different field Software Create, can't monitor in operational process that the model internal data changes, and is unfavorable for simulation analysis;
7. the data interaction of each domain model transmission all needs to finish by the Simulink environment, can't realize point-to-point direct transmission, and when volume of transmitted data is very large, this transmission mode will have a strong impact on simulation velocity.
Summary of the invention
All simulation softwares derive for not supporting of existing during model insertion same system that the present invention sets up different software for the employing that solves existing collaborative simulation system and exist, the calculation accuracy of collaborative simulation and resolve the problem that efficient is relatively poor and cause easily the collaborative simulation failure, and then a kind of multi-field collaborative distributed analogue system is provided.For this reason, the invention provides following technical scheme:
A kind of multi-field collaborative distributed analogue system comprises:
Main control module, be used for obtaining corresponding model information by the description document that is written into pre-determined model, clock base frequency is set and issues described clock base frequency and the Simulation Control instruction according to described model information, according to the data transmission channel between the model of described model information setting in data service module and define Data Update cycle of each data channel;
Data service module is used for having the data link of independent data transmission cycle by foundation, for the emulated data of distributed collaboration emulation provides data channel;
The model interface module is used for annexation and the management and running set up main control module and the sub-engine of emulation, and described clock base frequency and Simulation Control instruction are sent to the sub-engine of emulation, to finish resolving of corresponding model.
Beneficial effect of the present invention comprises: proposed to be independent of the Collaborative Simulation Environment framework of the independent operating of multi-field simulation software, different simulation softwares carry out co-simulation under this framework unified management; Proposed the point-to-point transmission mode of multi-field simulation software data, need not can not affect other software by the transmission of middleware software environment when transmitted data amount is larger, improved simulation efficiency; Propose the concept of collaborative simulation data soft bus, the model cycle of resolving has been separated with the bus data transmission cycle, not only more approached the real system behavior, and be convenient to carry out Data Control and the realization of data prediction algorithm; Simulation engine is divided into leading engine and sub-engine two layer-managements, has not only improved efficient, and increased dirigibility; The clock of sub-engine and leading engine clock synchronous advance but are relatively independent, and corresponding simulation time is independent separately, dynamically add and withdraw from thereby be convenient in the system simulation node; Support the distributed collaboration simulation node to operate in and carry out heterogeneous system emulation under the different operating system environment; Support the real-time simulation clock-time scheduling, sub-simulation node may operate in the real time operating system, and can pass through physical I/O interface and outside in kind the connection.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the multi-field collaborative distributed analogue system that provides of the specific embodiment of the present invention;
Fig. 2 is the inside structure synoptic diagram of the sub-engine of emulation that provides of the specific embodiment of the present invention;
Fig. 3 is the inner principle schematic of current argument table that the specific embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
This embodiment provides a kind of multi-field collaborative distributed analogue system, as shown in Figure 1, comprising:
Model interface module 3 is used for setting up annexation and the management and running of main control module 1 and the sub-engine of emulation, and described clock base frequency and Simulation Control instruction are sent to the sub-engine of emulation, to finish resolving of corresponding model.
The system architecture of the support multinuclear multi-model parallel distributed real-time simulation that this embodiment proposes is comprised of three parts: main control module, data service module and model interface module.
Concrete, main control module 1 is responsible for the functions such as distributed collaboration design of Simulation, operation management and control, and the submodule and the function that comprise are as follows:
Main control module is finished distributed real-time simulation scheduling engine function,
(1) the main aperture submodule obtains model information by the description document that is written into pre-determined model, according to model information the clock base frequency of Clock management submodule is set, and will sends to the period of the day from 11 p.m. to 1 a.m clock (SubTimer) of the sub-engine of each emulation under this clock base frequency and the Simulation Control instruction;
(2) the collaborative simulation design submodule is according to the data transmission channel between the model of model information setting in data service module that is written into, and define Data Update cycle of each passage, if the data channel of event type is not restricted by the Data Update cycle then;
(3) data, services management submodule is finished the functions such as online data supervision, preservation by the data that simulation run is set need to monitors, simultaneously in order to improve data transmission efficiency, this module desired data need not to send separately by sub-simulation node directly by the data service module collection;
(4) the simulation run time management submodule is responsible for the collaborative simulation scheduling feature, be responsible for the sub-engine of emulation startup, operation, suspending/resuming, the function such as stop, dynamic adding that processing simulation node with withdraw from and simulation process in event handling and coordination function.
Model interface module 3 is finished the functions such as model scheduling, data transmission by the sub-engine of emulation.The initialization, data service layer that model interface module 3 is at first finished model sends its operation message to initialization that should the simulation node service to main control computer, and the task of setting up sub-engine thread.After initialization was finished, sub-engine began to set up annexation and the management and running between data bus and the mode input output.The scheduling that model is accepted sub-engine is finished model and is resolved.Idiographic flow as shown in Figure 2.Model interface module 3 is set up the sub-engine of emulation when the simulation initialisation by embed self-defining module interface in simulation software, this sub-engine is realized again the data interaction of simulation software and sub-engine by module interface, sub-engine is controlled resolving of this module interface by module interface again, thereby realizes that the external control simulation software resolves the purpose of process.The clock base frequency that sub-engine sends by receiving leading engine, and the model information of setting up according to simulation software separately and flexible bus link data transmission cycle carry out, and model resolves control and data are controlled to bus transfer.
Sub-engine is independent of outside model calculating and the data bus, carries out distribution and the Clock management of subsystem model data, finishes three major functions:
(1) obtains the synchronous clock time that main control computer sends at data bus, and then judge whether that the model with submodel resolves cycle coupling (namely whether model resolves the multiple relation in cycle), if coupling then trigger submodel and carry out a step computing.
(2) the sub-engine principle of whether mating master clock according to the input port bus cycles on data bus upgrade to be subscribed to this mode input port data that other models send.
(3) sub-engine will upgrade the current argument table of the CVT(that restores with the input port bus data of master clock coupling) in, will from CVT, copy with the output port data of master clock coupling, and be published on the data bus.
Current argument table (CVT) is used for the port information of memory model.These information comprise the ID of port, the title of port, the data type of port, the data dimension of port, length of data queue, the data direction of port, the initial value of port etc.Data storage is realized with queue structure among the CVT.This means that the group engine will keep the historical data of some when upgrading CVT to the data bus subscription data, and with in the historical data the most outmoded one abandon, and enter up-to-date data, as shown in Figure 3.
CVT finishes two major functions:
(1) accept the bus data that sub-engine is subscribed to, and deposit formation in, when model enters it and resolves the cycle, with the data copy of team's head to the corresponding input port of model.
(2) when the bus cycles of model output port match master clock, give sub-engine with the data copy of team's head, carry out the data issue by sub-engine to data bus.
The technical scheme that adopts this embodiment to provide has proposed to be independent of the Collaborative Simulation Environment framework of the independent operating of multi-field simulation software, and different simulation softwares carry out co-simulation under this framework unified management; Proposed the point-to-point transmission mode of multi-field simulation software data, need not can not affect other software by the transmission of middleware software environment when transmitted data amount is larger, improved simulation efficiency; Propose the concept of collaborative simulation data soft bus, the model cycle of resolving has been separated with the bus data transmission cycle, not only more approached the real system behavior, and be convenient to carry out Data Control and the realization of data prediction algorithm; Simulation engine is divided into leading engine and sub-engine two layer-managements, has not only improved efficient, and increased dirigibility; The clock of sub-engine and leading engine clock synchronous advance but are relatively independent, and corresponding simulation time is independent separately, dynamically add and withdraw from thereby be convenient in the system simulation node; Support the distributed collaboration simulation node to operate in and carry out heterogeneous system emulation under the different operating system environment; Support the real-time simulation clock-time scheduling, sub-simulation node may operate in the real time operating system, and can pass through physical I/O interface and outside in kind the connection.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the 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 of claim.
Claims (2)
1. a multi-field collaborative distributed analogue system is characterized in that, comprising:
Main control module, be used for obtaining corresponding model information by the description document that is written into pre-determined model, clock base frequency is set and issues described clock base frequency and the Simulation Control instruction according to described model information, according to the data transmission channel between the model of described model information setting in data service module and define Data Update cycle of each data channel;
Data service module is used for having the data link of independent data transmission cycle by foundation, for the emulated data of distributed collaboration emulation provides data channel;
The model interface module is used for annexation and the management and running set up main control module and the sub-engine of emulation, and described clock base frequency and Simulation Control instruction are sent to the sub-engine of emulation, to finish resolving of corresponding model.
2. multinuclear multi-model parallel distributed real-time emulation system according to claim 1 is characterized in that described main control module comprises:
The master control submodule, be used for obtaining model information by the description document that is written into pre-determined model, according to described model information the clock base frequency of Clock management submodule is set, and will sends to the period of the day from 11 p.m. to 1 a.m clock of the sub-engine of each emulation under described clock base frequency and the Simulation Control instruction;
The collaborative simulation design submodule is used for according to the data transmission channel between the model of model information setting in data service module that is written into, and defines the Data Update cycle of each passage;
Data, services management submodule is used for finishing by data that simulation run need to monitor are set that online data monitors and the data preservation;
The simulation run time management submodule, be used for the sub-engine of emulation startup, operation, time-out, recover or stop, and the dynamic adding of processing simulation node with withdraw from and simulation process in event handling and coordination function.
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| CN103257930A (en) * | 2013-05-14 | 2013-08-21 | 北京经纬恒润科技有限公司 | Data reading and writing method and system based on data distribute service (DDS) |
| CN103440372A (en) * | 2013-08-23 | 2013-12-11 | 南京南瑞继保电气有限公司 | Digital simulation modeling method of power electronic equipment |
| CN103888478A (en) * | 2014-04-18 | 2014-06-25 | 中国人民解放军91655部队 | Multi-system compatible distributed simulation operational control method |
| CN104238375A (en) * | 2014-09-26 | 2014-12-24 | 上海科梁信息工程有限公司 | Real-time simulation system of six-gear double-clutch vehicle and building method of real-time simulation system |
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Application publication date: 20130320 |