CN106598884A - Time-frequency difference compensation method of multistage simulation platform bridging - Google Patents
Time-frequency difference compensation method of multistage simulation platform bridging Download PDFInfo
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- CN106598884A CN106598884A CN201611048516.9A CN201611048516A CN106598884A CN 106598884 A CN106598884 A CN 106598884A CN 201611048516 A CN201611048516 A CN 201611048516A CN 106598884 A CN106598884 A CN 106598884A
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- G06F13/105—Program control for peripheral devices where the programme performs an input/output emulation function
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Abstract
The invention discloses a time-frequency difference compensation method of multistage simulation platform bridging. The method is as follows: a main frame period T of a simulation system is bisected for n times, main simulation solution and sensory system solution are separately accomplished within T and T/n periods, no fixed period is set for the conversion of the multistage simulation platform bridging, and a main simulation period of a tactical simulation system is responded by a handshake signal. By adoption of the time-frequency difference compensation method disclosed by the invention, the instantaneity and the synchronism of data transmission between different levels of tactical simulation systems can be effectively solved, and the occurrence of a pause phenomenon of a sensory system with relatively high time period requirements is avoided, such as pause or jitter of a scene.
Description
Technical field
The present invention relates to a kind of when frequency difference compensation method of multistage emulation platform bridge joint.
Background technology
System combat is emulated on the basis of virtual battlefield environment is built, by certain coupled relation by war system
Each independent, loosely-coupled system such as campaign level, Tactics-level, weapon platform level, weapongrade (containing guided missile and jamming equipment)
Connect, and the bridging technology using multi-environment, heterogenous, multiresolution be modeled to the interbehavior between them,
The interconnection interoperability between combat simulation systems at different levels is realized, so as to emerge in large numbers the overall efficiency of system combat, to reason of fighting
By research with innovation, and the new tactics of new architecture Combat Efficiency Evaluation checking, all with powerful supporting role, be high skill
The important means for promoting theories for military operations achievement practical under the conditions of art.
Due to the size in the emulation frame period of each rank combat simulation system it is different, such as current campaign level frame period
For 10 seconds, and the Tactics-level frame period was 30 milliseconds, differed more than 330 times, when system combat simulation study is implemented with training, at different levels
Data conversion between other analogue system is easy to leakage frame phenomenon occur, and data are inconsistent, it is imitative to fight to cause multistage operation to emulate
The problems such as really taking action asynchronous, these problems directly influence the result and conclusion of system combat simulation study and training.
At present, in each rank operation simulation and calculation network platform, system synchronization is realized using the frame period generally.So-called frame
Cycle refers to, whole simulation time is divided into the isometric simulation run time period according to the build-in attribute of simulation object, this when
Between section become emulation frame period, referred to as frame period.Resolving control node is carried out with the frame period as synchronizing signal, periodically in real time
Simulation calculating and generation interaction data, and the operation result in previous frame period will be kept before next frame cycle operation terminates.Cause
This, the operation result in any one frame period will keep constant in a frame period.According to each rank combat simulation system
The different requirements of object and index, the size for emulating the frame period are different, generally several milliseconds Dao several seconds.
War is a typical complex gigantic system, and the analogue system species and level being related to due to system combat emulation is numerous
Many, the relation between each rank analogue system is also complicated various.System combat emulate when frequency difference compensation calculation difficult point be as
What fully and effectively solves the real time problems between the combat simulation system of different type different stage.Pass through network at present
Distributed architecture makes multiple stage computers undertake resolving task, by system-wide simulation and calculation division module, it is ensured that the reality of resolving
Shi Xing.But, some softwares resolve that module design task is single, are difficult to divide, uncertain with task amount is resolved, i.e., with complete set
The work of system is continually changing workload.Therefore, by the method for system-wide simulation and calculation division module is also had precision not
Enough problems, need comparatively more accurate computation model.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of multistage emulation platform bridge joint when
Frequency difference compensation method, the method can efficiently solve between different stage combat simulation system the real-time of data transfer and
Synchronicity, it is to avoid the time cycle requires the appearance of higher sensory system break, such as what comes into a driver's occurs pausing or shakes.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of when frequency difference compensation method of multistage emulation platform bridge joint, methods described is：Analogue system prime frame cycle T is entered
N decile of row, completes the resolving of main simulation and calculation and sensory system, respectively while multistage emulation platform with two kinds of cycles of T and T/n
Bridge joint conversion does not set the fixed cycle, but the main emulation cycle of Tactics-level analogue system is responded with handshake.
Further, the multistage emulation platform bridge joint conversion does not set the fixed cycle and is specially：Sent out after having resolved every time at once
Information data is sent, work is resolved next time.
Further, the resolving for completing main simulation and calculation and sensory system with the T/n cycles is specially：
Tactical Simulation system prime frame cycle T is divided into into n period of sub-frame Δ T, i.e.,：
T=n Δ T
If bridge joint change actual resolving time function into C (t), then resolving need to period of sub-frame number of times be：ceil(C
(t)/ΔT)；Bridge joint is set again and is changed and time function is updated into D (t) by the resolving that the frame period communicates, then triadic relation calculates public
Formula is：
D (t)=Δ Tceil (C (t)/Δ T)；
In formula, ceil (x) is the function that rounds up；
If the maximum of resolving time function C (t) is not more than (n+1) Δ T, i.e.,
C(t)max≤T+(1/n)·T；
Then：
D(t)max=(1/n) Tceil ((n+1) Δ T/ Δ T)=T+ (1/n) T；
Exceed the frame period when realistic bridges connect the conversion resolving time, but during over-time no more than (1/n) T, bridge joint turns
The renewal time changed will not be 2T, but T+ (1/n) T；So, bridge joint conversion resolve time can to fluctuate,
Scenery picture without causing emulator in Tactical Simulation system is shaken.
The present invention has following Advantageous Effects：
Present invention efficiently solves between different stage combat simulation system data transfer real-time and synchronicity, keep away
The appearance of the higher sensory system break of time cycle requirement is exempted from, such as what comes into a driver's occurs pausing or shakes.
Description of the drawings
Fig. 1 is the sequential chart that prior art jackshaft connects conversion and Tactical Simulation prime frame periodic communication；
Fig. 2 is the sequential chart that jackshaft of the present invention connects conversion and Tactical Simulation prime frame periodic communication.
Specific embodiment
Below, refer to the attached drawing, is more fully illustrated to the present invention, shown in the drawings of the exemplary enforcement of the present invention
Example.However, the present invention can be presented as various multi-forms, the exemplary enforcement for being confined to describe here is not construed as
Example.And these embodiments are to provide, so that the present invention is fully and completely, and will fully convey the scope of the invention to this
The those of ordinary skill in field.
The invention provides a kind of when frequency difference compensation method of multistage emulation platform bridge joint, the method is：Will emulation
System prime frame cycle T carries out n decile, completes the resolving of main simulation and calculation and sensory system respectively with two kinds of cycles of T and T/n,
Multistage emulation platform bridge joint conversion simultaneously does not set the fixed cycle, but the main emulation of Tactics-level analogue system is responded with handshake
Cycle.
The bridge joint conversion of multistage emulation platform does not set the fixed cycle and is specially：Send information data after having resolved every time at once,
Work is resolved next time.
It is specially with the resolving that the T/n cycles complete main simulation and calculation and sensory system：
Tactical Simulation system prime frame cycle T is divided into into n period of sub-frame Δ T, i.e.,：
T=n Δ T
If bridge joint change actual resolving time function into C (t), then resolving need to period of sub-frame number of times be：ceil(C
(t)/ΔT)；Bridge joint is set again and is changed and time function is updated into D (t) by the resolving that the frame period communicates, then triadic relation calculates public
Formula is：
D (t)=Δ Tceil (C (t)/Δ T)；
In formula, ceil (x) is the function that rounds up；
If the maximum of resolving time function C (t) is not more than (n+1) Δ T, i.e.,
C(t)max≤T+(1/n)·T；
Then：
D(t)max=(1/n) Tceil ((n+1) Δ T/ Δ T)=T+ (1/n) T；
Exceed the frame period when realistic bridges connect the conversion resolving time, but during over-time no more than (1/n) T, bridge joint turns
The renewal time changed will not be 2T, but T+ (1/n) T；So, bridge joint conversion resolve time can to fluctuate,
Scenery picture without causing emulator in Tactical Simulation system is shaken.
As shown in figure 1, between campaign level analogue system and Tactics-level analogue system during data conversion, with war
The change of operation in labour level analogue system, its resolving amount also when it is big when it is little, the change of this resolving amount is to time for resolving
Have a huge impact.(frame period is set as 30ms) when adopting the frame period to communicate, if resolving amount is excessive to cause system overload
Operation, the time interval for resolving frame are not just resynchronized with the renewal time interval of Tactics-level analogue system.Therefore, in the control of frame frequency
Two kinds of phenomenons such as Fig. 1 occur under mode processed：
1) during the fixed cycle, the explanation by taking 30 frame per second as an example.When resolving amount is not in problem less than or equal to 1/30s,
But when resolving amount is more than 1/30s, it will same piece image is shown in two or more time intervals, rather than is directly shown
Show lower piece image, beyond the border for resolving frame.So, it may appear that frame losing phenomenon, the time interval that two frames are resolved, meeting are increased
The pause of some sensory systems in Tactical Simulation system is caused, for example, emulation what comes into a driver's occurs pausing or shakes.Such as the 3rd frame in Fig. 1
And the 5th lose the 4th frame between frame.
2) on-fixed periodic mode, this mode are that the bridge joint converse routine that calls as fast as possible runs, without keeping one
The frame frequency of individual fixation.When the time used being resolved more than or less than 1/30s occur repetition resolving or frame losing phenomenon.As in Fig. 2
2nd frame repeats to resolve 2 times, and loses the 4th frame between the 3rd frame and the 5th frame.
The method for solving above-mentioned frame losing phenomenon, campaign level analogue system can be transferred to the target of Tactics-level analogue system
Quantity specify a higher limit, with the resolving ability of minimum resolving time to the target in campaign level analogue system carry out require and
Limit.Design requirement of this method from Tactics-level analogue system, have impact on the design of campaign level analogue system, very not
Rationally.
As shown in Fig. 2 can be with problem present in effectively solving Fig. 1 using the method for the present invention；The actual reality of the present invention
The value of Shi Zhong, n should consider that bridge joint conversion resolves needs, consider the resolving of the main simulation and calculation system of Tactical Simulation system again
Cycle.In this embodiment, we take n=3, at this moment, such as take T=30ms, C (t)max=40ms, then obtain D (t)max=40ms,
And setting up bridging software, Tactical Simulation dominant frequency T is responded (when the resolving cycle being bridged more than T, to bridge in handshake mode
Based on the resolving cycle, when the resolving cycle is bridged less than T, based on the Tactical Simulation cycle).
The present invention between campaign level and Tactics-level combat simulation system during data conversion aspect position prediction with
And the resolving of bridge joint conversion is started with communication, it is proposed that frequency difference compensation method when system combat is emulated, can be very using the method
Solve well the difficult problem that runs into when different stage analogue system interconnection interoperates, it is adaptable to which system combat analogue system is ground
Study carefully and structure.
It is described above simply to illustrate that of the invention, it is understood that the invention is not limited in above example, meet
The various variants of inventive concept are within protection scope of the present invention.
Claims (3)
1. a kind of when frequency difference compensation method of multistage emulation platform bridge joint, it is characterised in that methods described is：By analogue system master
Frame period T carries out n decile, completes the resolving of main simulation and calculation and sensory system respectively with two kinds of cycles of T and T/n, while many
Level emulation platform bridge joint conversion does not set the fixed cycle, but the main emulation cycle of Tactics-level analogue system is responded with handshake.
2. the when frequency difference compensation method of multistage emulation platform bridge joint according to claim 1, it is characterised in that described multistage
Emulation platform bridge joint conversion does not set the fixed cycle and is specially：Send information data after having resolved every time at once, solved next time
Calculate work.
3. the when frequency difference compensation method of multistage emulation platform bridge joint according to claim 1, it is characterised in that described with T/
The n cycles complete main simulation and calculation and the resolving of sensory system is specially：
Tactical Simulation system prime frame cycle T is divided into into n period of sub-frame Δ T, i.e.,：
T=n Δ T
If bridge joint change actual resolving time function into C (t), then resolving need to period of sub-frame number of times be：ceil(C(t)/Δ
T)；Bridge joint is set again and is changed and time function is updated into D (t) by the resolving that the frame period communicates, then triadic relation computing formula is：
D (t)=Δ Tceil (C (t)/Δ T)；
In formula, ceil (x) is the function that rounds up；
If the maximum of resolving time function C (t) is not more than (n+1) Δ T, i.e.,
C(t)max≤T+(1/n)·T；
Then：
D(t)max=(1/n) Tceil ((n+1) Δ T/ Δ T)=T+ (1/n) T；
Exceed the frame period when realistic bridges connect the conversion resolving time, but during over-time no more than (1/n) T, bridge joint conversion
The renewal time will not be 2T, but T+ (1/n) T；So, the time that bridge joint conversion is resolved can be to fluctuate, and not
The scenery picture of emulator in Tactical Simulation system can be caused to shake.
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| CN201611048516.9A CN106598884B (en) | 2016-11-21 | 2016-11-21 | A kind of when frequency difference compensation method of multistage emulation platform bridge joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297703A (en) * | 2019-06-11 | 2019-10-01 | 国网江苏省电力有限公司 | A kind of method and device of the analog hardware task schedule in real-time emulation system |
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| US20100063786A1 (en) * | 2008-09-11 | 2010-03-11 | Harke Michael C | Co-Simulation Process |
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| US20100063786A1 (en) * | 2008-09-11 | 2010-03-11 | Harke Michael C | Co-Simulation Process |
| CN102665141A (en) * | 2012-05-16 | 2012-09-12 | 哈尔滨工业大学深圳研究生院 | AVS (audio video standard) audio and video presynchronizing method based on RTP (real time protocol) package |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297703A (en) * | 2019-06-11 | 2019-10-01 | 国网江苏省电力有限公司 | A kind of method and device of the analog hardware task schedule in real-time emulation system |
| CN110297703B (en) * | 2019-06-11 | 2021-11-05 | 国网江苏省电力有限公司 | Method and device for simulating hardware task scheduling in real-time simulation system |
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