CN109214129A - It is a kind of based on actual situation displacement limited network under the conditions of LVC emulate fault-tolerance approach - Google Patents
It is a kind of based on actual situation displacement limited network under the conditions of LVC emulate fault-tolerance approach Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement, and steps are as follows: 1) defining three kinds of failure modes respectively to " actual load object " in LVC Simulation Application system, " half in kind object "；2) operation control system detects the state of " actual load object ", " half object in kind ", and when superframe event occurs, LVC Simulation Application system is handled according to the fault-tolerant way of estimating that superframe fails；If 3) super-frame number reaches the systematic error tolerance upper limit, starting actual situation replaces fault tolerant mechanism, " actual load object ", " half object in kind " of communication failure occurs using mathematic simulated mode replacement；If 4) restore normal after replacing after a period of time, system exits actual situation displacement mechanism；If not restoring normal after after replacement, then it is assumed that permanent failure occurs, mathematic simulated mode permanently substitutes corresponding " actual load object ", " half object in kind ".
Description
Technical field
The present invention relates to LVC under the conditions of a kind of limited network based on actual situation displacement to emulate fault-tolerance approach, belongs to emulation skill
Art field.
Background technique
LVC emulation refers to the emulation that (live) in kind, virtual (Virtual), construction (Construct) combine.It realizes
LVC emulation needs to realize bottom communication based on distributed emulation supporting framework, and uses the skills such as gateway, adapter, wrapper
Art is realized the encapsulation of Heterogeneous simulation resource and is integrated.LVC system requirements analogue system must be promoted according to 1:1 clock speed.State
Outer typical LVC architectural framework is TENA, and there are VITA, Josim etc. in the country.
Compared with semi-matter simulating system and mathematics simulation system, the network traffic conditions of LVC combined simulation system are different
Often complicated, often lack unification, reliably train network.The access of actual load generally relies on data link system, exists very big
Connect unreliable, uncontrollable problem；Between all kinds of pilot systems in strange land, inevitably there is biggish communication delay.
Constraint communication condition be mainly reflected in " heterogeneous links delay " highly it is uncontrollable, " postponing between network segment " is by space length
Severe constraints.Aiming at the problem that heterogeneous links may interrupt, it is necessary to design enough fault tolerant mechanisms, ensure the operation in logic target range
It is as few impacted as possible.
Summary of the invention
The technical problems to be solved by the present invention are: overcoming the drawbacks described above of the prior art, propose a kind of based on actual situation
LVC emulates fault-tolerance approach under the conditions of displaced limited network, efficiently solves in LVC analogue system, and " actual load object " and " half
Caused system global failure problem after object in kind " failure.
The technical scheme is that LVC emulates fault-tolerance approach, step under the conditions of a kind of limited network based on actual situation displacement
Suddenly are as follows:
1) it is directed to LVC Simulation Application system, are defined by superframe respectively and is lost for " actual load object " therein, " half object in kind "
Effect can restore three kinds of failure modes of malfunction and failure and permanent failure；
2) in LVC Simulation Application system operation, operation control system detects " actual load object ", " half object in kind "
State, when superframe event occurs, it is believed that actual load object " or " half in kind object " break down, LVC Simulation Application system is pressed
Fault-tolerant way processing is estimated according to superframe failure；
3) if super-frame number reaches the systematic error tolerance upper limit, then it is assumed that generation can restore malfunction and failure, start actual situation
Fault tolerant mechanism is replaced, " actual load object ", " half object in kind " of communication failure occurs using mathematic simulated mode replacement；
If 4) restore normal after a period of time using mathematic simulated mode replacement " actual load object ", " half object in kind ",
Then system exits actual situation displacement mechanism, restores original " actual load object ", " half object in kind " and accesses, transports total system normally
Row；If " actual load object ", " half object in kind " do not restore normal after a period of time, then it is assumed that permanent failure occurs, mathematics is imitative
True mode permanently substitutes corresponding " actual load object ", " half object in kind ".
" actual load object ", " half object in kind " define three kinds of basic failure modes in the step 1), are defined as follows:
The failure of 2.1 first kind superframes refers to real-time system information update superframe caused by being limited by communication network condition；
2.2 second classes can restore malfunction and failure, refer to " actual load object ", " half object in kind " because of actual load adaptive terminal or half in fact
Object simulating assembly gateway or network communication failure cause to fail, and related object has again after relevant device restarting connects
Enter condition；
2.3 third class permanent failures refer to that catastrophe failure occurs for " actual load object ", " half object in kind ", emulate in entire LVC
It tests irrecoverable in training process.
The operation control system provides the monitoring service of the registration management of simulation object, node operating status；Wherein infuse
Volume management refers to that the network address of the type to simulation object, information exchange relationship and physical host is managed；Node operation
State refers to that the logical time current to node is inquired.
The mode of detection superframe event is the final updating logical time judgement based on simulation object in the step 2), is sentenced
Disconnected foundation is whether the difference of final updating logical time and present system time has been more than that the average emulation of the simulation object walks
It is long.
What superframe failed in the step 2) estimates fault-tolerant way, refers to using an object model definition and is replaced emulation
The consistent agent model of object replaces the simulation object of superframe, and based on historical data to the continuous state data of simulation object
Cubic spline interpolation is carried out, and is extrapolated to present system time；Other discrete state variables maintain the original state be worth it is constant.
Mathematic simulated mode is to have same object mould with corresponding " actual load object ", " half object in kind " in the step 3)
Type statement, and the mathematic simulated mode with corresponding function simulation capacity.
If super-frame number reaches the systematic error tolerance upper limit described in the step 3), refer to that simulation object final updating is patrolled
The difference of volume time and present system time has been more than twice of the average simulation step length of the simulation object.
Actual situation described in the step 3) replaces fault tolerant mechanism, refers to and utilizes and be replaced the consistent virtual soldier of simulation object
Power mathematical model replaces the simulation object, is simultaneously stopped and updates the model being replaced in such a way that fitting is estimated；If the later period
It does not trigger and exits actual situation displacement mechanism, then until emulation terminates, which is all substituted by virtual troops' mathematical model.
Actual situation displacement mechanism is exited described in the step 4), refers to the operator of " actual load object ", " half object in kind "
Member proposes recovery application to LVC simulation run control system, requires the object to reinitialize by the mode of manual dispatching, finally
Rejoin LVC analogue system.
The LVC analogue system refers to the emulation that live in kind, virtual Virtual, construction Construct are combined, is based on
Distributed emulation supporting framework realize bottom communication, and using gateway, adapter, Wrapper Technology realize " actual load object ",
The encapsulation of Heterogeneous simulations resource such as " half in kind object " and " mathematical simulation object " with integrate；The operation of the LVC analogue system
According to the simulation clock speed propulsion with really time consistency.
The distributed emulation supporting framework refers to the LVC emulation middleware of TENA class, and it is logical for using object model
Semantic basis is interrogated, the interoperability between remote method call realization simulation object is subscribed to by issue of anonymity.
Compared with the prior art, the invention has the advantages that:
Using the fault-tolerant counting technology scheme replaced based on actual situation, the fault-tolerant work of operation under limited network environment is played
With improving the overall reliability of LVC Simulation Application system.
(1) it efficiently solves in LVC analogue system, caused system after " actual load object " and " half object in kind " failure
Global failure problem effectively increases the fault-tolerance of system, can save a large amount of l-G simulation test expenses and lead tune and interrupt.
(2) fault-tolerant processing is carried out for the failure of unreliable network superframe in such a way that fitting is estimated, can coped with mostly
Superframe mistake caused by number Wireless Network delay is unstable.
(3) using " the actual load object " of virtual troops replacement long-time superframe and " half object in kind ", it is such right to avoid
The simulated interrupt as caused by failure provides simultaneously to reduce the interference to other " actual load objects " and " half object in kind "
The mechanism that simulation process is rejoined after fault recovery can make LVC emulate maximizing the benefits.
Detailed description of the invention
Fig. 1 is the fault-tolerant flow diagram of the present invention.
Specific embodiment
Further detailed description is done to the present invention below with reference to Fig. 1 and specific embodiment:
The characteristics of for LVC system, defines superframe failure to " actual load object ", " half object in kind " respectively, can restore event
Barrier failure and three kinds of failure modes of permanent failure.
In LVC system operation, operation control system detects the superframe event of " actual load object ", " half object in kind ",
Fault-tolerant way processing is estimated according to superframe failure.This kind of failure generally only lasts for a few emulation cycle, and communicates and restore
Afterwards, the data of still available associated frame.
If superframe reaches the systematic error tolerance upper limit, optimistic estimate, which is thought to have occurred, can restore malfunction and failure, this kind of
Failure will can often restore after the time delay of minute grade.Starting actual situation replaces fault tolerant mechanism at this time, and safeguards system is normal
Operation.
If " actual load object ", " half object in kind " restore normal after a period of time, system exits actual situation displacement mechanism,
Restore " actual load object ", " half object in kind " access.If " actual load object ", " half object in kind " are extensive not yet after a period of time
It is multiple, then it is assumed that permanent failure occurs.
Specific step is as follows for the method for the present invention:
1) it is directed to LVC Simulation Application system, are defined by superframe respectively and is lost for " actual load object " therein, " half object in kind "
Effect can restore three kinds of failure modes of malfunction and failure and permanent failure；
2) in LVC Simulation Application system operation, operation control system detects " actual load object ", " half object in kind "
State, when superframe event occurs, it is believed that actual load object " or " half in kind object " break down, LVC Simulation Application system is pressed
Fault-tolerant way processing is estimated according to superframe failure；
3) if super-frame number reaches the systematic error tolerance upper limit, then it is assumed that generation can restore malfunction and failure, start actual situation
Fault tolerant mechanism is replaced, " actual load object ", " half object in kind " of communication failure occurs using mathematic simulated mode replacement；
If 4) restore normal after a period of time using mathematic simulated mode replacement " actual load object ", " half object in kind ",
Then system exits actual situation displacement mechanism, restores original " actual load object ", " half object in kind " and accesses, transports total system normally
Row；If " actual load object ", " half object in kind " do not restore normal after a period of time, then it is assumed that permanent failure occurs, mathematics is imitative
True mode permanently substitutes corresponding " actual load object ", " half object in kind ".
" actual load object ", " half object in kind " define three kinds of basic failure modes in the step 1), are defined as follows:
The failure of 2.1 first kind superframes refers to real-time system information update superframe caused by being limited by communication network condition；
2.2 second classes can restore malfunction and failure, refer to " actual load object ", " half object in kind " because of actual load adaptive terminal or half in fact
Object simulating assembly gateway or network communication failure cause to fail, and related object has again after relevant device restarting connects
Enter condition；
2.3 third class permanent failures refer to that catastrophe failure occurs for " actual load object ", " half object in kind ", emulate in entire LVC
It tests irrecoverable in training process.
The operation control system provides the monitoring service of the registration management of simulation object, node operating status；Wherein infuse
Volume management refers to that the network address of the type to simulation object, information exchange relationship and physical host is managed；Node operation
State refers to that the logical time current to node is inquired.
The mode of detection superframe event is the final updating logical time judgement based on simulation object in the step 2), is sentenced
Disconnected foundation is whether the difference of final updating logical time and present system time has been more than that the average emulation of the simulation object walks
It is long.
What superframe failed in the step 2) estimates fault-tolerant way, refers to using an object model definition and is replaced emulation
The consistent agent model of object replaces the simulation object of superframe, and based on historical data to the continuous state data of simulation object
Cubic spline interpolation is carried out, and is extrapolated to present system time；Other discrete state variables maintain the original state be worth it is constant.
Mathematic simulated mode is to have same object mould with corresponding " actual load object ", " half object in kind " in the step 3)
Type statement, and the mathematic simulated mode with corresponding function simulation capacity.
If super-frame number reaches the systematic error tolerance upper limit described in the step 3), refer to that simulation object final updating is patrolled
The difference of volume time and present system time has been more than twice of the average simulation step length of the simulation object.
Actual situation described in the step 3) replaces fault tolerant mechanism, refers to and utilizes and be replaced the consistent virtual soldier of simulation object
Power mathematical model replaces the simulation object, is simultaneously stopped and updates the model being replaced in such a way that fitting is estimated；If the later period
It does not trigger and exits actual situation displacement mechanism, then until emulation terminates, which is all substituted by virtual troops' mathematical model.
Actual situation displacement mechanism is exited described in the step 4), refers to the operator of " actual load object ", " half object in kind "
Member proposes recovery application to LVC simulation run control system, requires the object to reinitialize by the mode of manual dispatching, finally
Rejoin LVC analogue system.
The LVC analogue system refers to the emulation that live in kind, virtual Virtual, construction Construct are combined, is based on
Distributed emulation supporting framework realize bottom communication, and using gateway, adapter, Wrapper Technology realize " actual load object ",
The encapsulation of Heterogeneous simulations resource such as " half in kind object " and " mathematical simulation object " with integrate；The operation of the LVC analogue system
According to the simulation clock speed propulsion with really time consistency.
The distributed emulation supporting framework refers to the LVC emulation middleware of TENA class, and it is logical for using object model
Semantic basis is interrogated, the interoperability between remote method call realization simulation object is subscribed to by issue of anonymity.
VITA middleware is used with one, i.e. Virtual Test Validation enables System Framework, the LVC emulation comprising two examples
It is illustrated for application system.The LVC Simulation Application system includes an actual load tank object and a mathematical simulation tank
Model object.Two kinds of objects have identical object model, wherein with the essence for stating the object using earth coordinates
Degree, latitude and height, are double type variable, the SI system of unit.
Actual load tank object is using wireless network and mathematical simulation tank model object LVC Simulation Application system.It is all smooth
Gram object is based on middleware and is encapsulated as application program, is distributed on the computer of test subnet and runs.It is above-mentioned two to apply journey
Sequence is separately operable and on actual load adapter and mathematics simulation computer, be the computer system of x86 framework, supports that tcp/ip is logical
News.Wherein, actual load adapter uses vehicle-mounted power supply unit, and satellite positioning module, the location information of available the machine are housed.Two
The application program of a object issues oneself location information and subscribes to for other applications, wherein actual load tank object publishing
It is the location information that satellite positioning module obtains, mathematical simulation tank object publishing is mathematical simulation location information.
In operation, the wireless telecommunications of actual load tank object are broken down.Its fault-tolerant process is as shown in Figure 1.
At the T moment, wireless telecommunications are broken down, and the final updating logical time of the actual load tank is T, average emulation step
A length of t.At the T+t moment, mathematical simulation tank model object can not obtain ordered actual load tank location information, trigger super
Frame fault tolerant mechanism replaces the artificial physical in such a way that agent model re-registers immediately.
Agent model carries out cubic spline song to the continuous state variable of the entity using the historical data of the artificial physical
Line fitting, and the value estimated and calculate the T+t moment artificial physical continuous state variable of extrapolating, and it is distributed to LVC Simulation Application system
Mathematical simulation entity in system.
At the T+2t moment, which does not restore to communicate yet.Agent model carries out second of state estimations, concurrent cloth-like
State, while the actual load tank is substituted using the mathematic simulated mode with the actual load tank isomorphism and carries out simulation run.
After a period of time, the actual load tank communication failure reparation, then vehicle group personnel are obtained by middleware monitoring system
It takes the address ID and ip of agent model, and is sent to agent model and restore application, being about scheduled on the T+R moment resumes operation.Act on behalf of mould
Type sends the status requirement at T+R moment to the vehicle group.The vehicle group is according to requiring to designated place to reinitialize.Agent model exists
The T+R moment detects the vehicle group state, if state normally if allow the vehicle group to resume operation, agent model terminate operation, if shape
State is abnormal, and arranging the T+2R moment resumes operation.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (11)
1. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement, it is characterised in that steps are as follows:
1) it is directed to LVC Simulation Application system, superframe failure is defined respectively to " actual load object " therein, " half in kind object ", can
Restore three kinds of failure modes of malfunction and failure and permanent failure；
2) in LVC Simulation Application system operation, operation control system detects the shape of " actual load object ", " half object in kind "
State, when superframe event occurs, it is believed that actual load object " or " half object in kind " break down, and LVC Simulation Application system is according to super
Fault-tolerant way processing is estimated in frame failure；
3) if super-frame number reaches the systematic error tolerance upper limit, then it is assumed that generation can restore malfunction and failure, starting actual situation displacement
There is " actual load object ", " half object in kind " of communication failure using mathematic simulated mode replacement in fault tolerant mechanism；
If 4) restore normal after a period of time using mathematic simulated mode replacement " actual load object ", " half object in kind ", it is
System exits actual situation displacement mechanism, restores original " actual load object ", " half object in kind " and accesses, operates normally total system；
If " actual load object ", " half object in kind " do not restore normal after a period of time, then it is assumed that permanent failure, mathematical simulation mould occurs
Type permanently substitutes corresponding " actual load object ", " half object in kind ".
2. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: " actual load object ", " half object in kind " define three kinds of basic failure modes in the step 1), are defined as follows:
The failure of 2.1 first kind superframes refers to real-time system information update superframe caused by being limited by communication network condition；
2.2 second classes can restore malfunction and failure, refer to " actual load object ", " half object in kind " because of actual load adaptive terminal or semi-physical object
Quasi- equipment gateway or network communication failure cause to fail, and related object has access item again after relevant device restarting
Part；
2.3 third class permanent failures refer to that catastrophe failure occurs for " actual load object ", " half object in kind ", in entire LVC l-G simulation test
It is irrecoverable in training process.
3. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: the operation control system provides the monitoring service of the registration management of simulation object, node operating status；Wherein register
Management refers to that the network address of the type to simulation object, information exchange relationship and physical host is managed；Node runs shape
State refers to that the logical time current to node is inquired.
4. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: the mode of detection superframe event is the final updating logical time judgement based on simulation object in the step 2), is sentenced
Disconnected foundation is whether the difference of final updating logical time and present system time has been more than that the average emulation of the simulation object walks
It is long.
5. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: what superframe failed in the step 2) estimates fault-tolerant way, refers to using an object model definition and is replaced emulation
The consistent agent model of object replaces the simulation object of superframe, and based on historical data to the continuous state data of simulation object
Cubic spline interpolation is carried out, and is extrapolated to present system time；Other discrete state variables maintain the original state be worth it is constant.
6. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: mathematic simulated mode is to have same object mould with corresponding " actual load object ", " half object in kind " in the step 3)
Type statement, and the mathematic simulated mode with corresponding function simulation capacity.
7. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: if super-frame number reaches the systematic error tolerance upper limit described in the step 3), referring to that simulation object final updating is patrolled
The difference of volume time and present system time has been more than twice of the average simulation step length of the simulation object.
8. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: actual situation described in the step 3) replaces fault tolerant mechanism, refers to and utilizes and be replaced the consistent virtual soldier of simulation object
Power mathematical model replaces the simulation object, is simultaneously stopped and updates the model being replaced in such a way that fitting is estimated；If the later period
It does not trigger and exits actual situation displacement mechanism, then until emulation terminates, which is all substituted by virtual troops' mathematical model.
9. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1, special
Sign is: exiting actual situation displacement mechanism described in the step 4), refers to the operator of " actual load object ", " half object in kind "
It proposes to restore application to LVC simulation run control system, requires the object to reinitialize by the mode of manual dispatching, final weight
It is new that LVC analogue system is added.
10. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 1,
Be characterized in that: the LVC analogue system refers to the emulation that live in kind, virtual Virtual, construction Construct are combined, base
Bottom communication is realized in distributed emulation supporting framework, and " actual load pair is realized using gateway, adapter, Wrapper Technology
As ", the encapsulation of the Heterogeneous simulations resource such as " half in kind object " and " mathematical simulation object " with integrate；The LVC analogue system
Operation is according to the simulation clock speed propulsion with really time consistency.
11. LVC emulates fault-tolerance approach under the conditions of a kind of limited network based on actual situation displacement according to claim 9,
Be characterized in that: the distributed emulation supporting framework refers to the LVC emulation middleware of TENA class, and it is logical for using object model
Semantic basis is interrogated, the interoperability between remote method call realization simulation object is subscribed to by issue of anonymity.
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| CN112307610A (en) * | 2020-10-23 | 2021-02-02 | 中国运载火箭技术研究院 | LVC simulation system service scheduling method based on market trading mode |
| CN112307610B (en) * | 2020-10-23 | 2023-08-01 | 中国运载火箭技术研究院 | LVC simulation system service scheduling method based on market transaction mode |
| CN112380718A (en) * | 2020-11-20 | 2021-02-19 | 中国运载火箭技术研究院 | Adaptive equipment simulator adapter |
| CN112380718B (en) * | 2020-11-20 | 2023-08-01 | 中国运载火箭技术研究院 | Adaptive equipment simulator adapter |
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