33results about How to "Improve Simulation Confidence" patented technology

The invention discloses a virtual network card-based wireless channel simulation method, which comprises the following steps of: constructing the hardware environment of a simulation model; 2, constructing the simulation environment of the simulation model; 3, configuring initial parameters of simulation members by a user; 4, loading a virtual network card driver on a simulation system to complete internal initialization work; 5, beginning simulation, and performing data transceiving by the simulation members; and 6, finishing the simulation and estimating the performance of a wireless channel. The simulation method has the advantages of flexible configuration, good expandability, transparency for a low level and high reusability. The simulation method ensures the consistency of the simulation environment and real environment; the simulation results are more accurate, so the simulation reliability is improved; and the workload of simulation workers is reduced, the mutual portability of the application in the real environment and the simulation environment is easily realized, and the repeated work of developing a set of application for the simulation environment and the real environment respectively is avoided.

The invention provides a satellite flight control closed loop simulation system based on a component simulator, which is applied to a system comprising a dynamics simulation server, a sensor simulator, an actuator simulator and a space-borne computer, wherein the formula of data output by the sensor simulator to the space-borne computer is the same as that of data output by a practical sensor to the space-borne computer, and the format of data received by the actuator simulator from the space-borne computer, i.e., the format of data input by an actuator is the same as that of data input by a practical actuator, so that the simulation reliability of the satellite flight control closed loop simulation system can be enhanced effectively; the component simulator is adopted instead of a real physical device, so that the simulation system has the advantages of low cost and low complexity; and meanwhile, the simulation system has the characteristics of high generality, high flexibility and high automatic degree, so that the research period of a satellite can be shortened effectively, and the research cost of the satellite is reduced.

The invention provides a performer simulator which comprises a simulation server and a data interface converter, wherein, the data interface converter is used for receiving a control instruction from a spaceborne computer, converting a data format of the control instruction into a data format of an analog control instruction to obtain the analog control instruction, and sending the analog control instruction to the simulation server. Accordingly, the performer simulator provided in the invention can be used as a performer simulator of various performers such as a flywheel simulator, a magnetorquer simulator and a thruster simulator simultaneously or respectively, and has the advantages of strong versatility and good scalability; in addition, a data format inputted by the performer simulator is same with a data format inputted by an actual performer physical device in an actual satellite control system, thus the performer simulator can access a satellite control closed loop simulation system, and simulation credibility is effectively raised.

The invention belongs to the technical field of power system numerical simulation model parameter correction, and particularly relates to a method for establishing a simulation error evaluation indexbased on trajectory characteristics, in particular to a method for establishing a simulation credibility index system based on trajectory characteristics. The method comprises the following steps: injecting measured data into a simulation system by adopting a hybrid dynamic simulation method of impact load injection; calculating the track sensitivity of the simulation track to each parameter, andselecting a to-be-corrected parameter set with relatively high track sensitivity; performing hybrid dynamic simulation by using the corrected parameter group, and calculating simulation error indexesbefore and after correction, the simulation error indexes including a voltage error index and a power error index; comparing the error indexes before and after correction, and if the error value aftercorrection is smaller than the error value before correction, adopting the corrected parameters for simulation. According to the method, judgment errors caused by qualitative analysis are effectivelyavoided, the difference degree between simulation and actual measurement is reduced, and the simulation credibility is improved.

The invention discloses a networked reliability simulation analysis method based on multiple agents. The method comprises the following steps: establishing a component layer network; setting intelligent agent characteristics of each component node; setting intelligent agent characteristics of each node connection edge; setting a fault injection device, and specifying a fault injection position, fault injection time and fault injection intensity; setting a task execution process, establishing a task layer network, and setting a task execution sequence, time and cycle; analyzing the network structure of the simulation system to obtain system key nodes, operating the simulation system, observing the working state change condition of the system after fault injection, measuring the reliabilityof the simulation system from multiple angles, and finding out weak links of the simulation system; and analyzing and evaluating the reliability of the simulation system. According to the invention, the reliability of the system is improved, and more effective improvement measures are provided for improving the reliability of the system.

The present invention discloses a target simulator real-time drive system based on a DVI interface of a graphics card. The system comprises: a DVI transmission interface, used for establishing a data communication with a graphic workstation and a target simulator; a synchronous transmission control module, used for sending a simulation start signal to a dynamic scene image simulation module based on a field frequency signal output by the DVI transmission interface, and establishing synchronous data transmission with the target simulator; and the dynamic scene image simulation module, used for performing simulation analysis on to-be-tested dynamic scene data acquired from an external device based on the simulation start signal, and storing simulation image data into a frame cache. The present invention further discloses a target simulator real-time drive method based on a DVI interface of a graphics card. The technical scheme provided by the present invention shortens radiation scene output delay, ensures delay stability and thus greatly improves confidence of semi-physical dynamic scene simulation.

The invention belongs to the technical field of satellite constellation design and simulation, and particularly discloses a constellation semi-physical simulation system and method, and the system comprises a constellation digital simulation module which is used for completing the constellation configuration, inter-satellite link and ground coverage simulation. The satellite attitude and orbit dynamics simulator, the power supply and distribution simulator, the thermal control simulator, the satellite-borne satellite electric control equipment and the satellite measurement and control simulator are connected with the orbit information output end of the constellation digital simulation module, and the input end of the power supply and distribution simulator is connected with the illumination condition information output end of the constellation digital simulation module; the input end of the thermal control simulator is connected with the orbit solar angle information output end of the constellation digital simulation module, and satellite-borne satellite electric control equipment can receive satellite sensor information, satellite power supply information and satellite equipment temperature information. By adopting the technical scheme, the semi-physical simulation system is combined with the real satellite single machine and the simulation equipment to generate the physical signal, information interaction with the constellation digital simulation module is carried out, and the simulation confidence is improved.

The invention relates to the field of modeling and simulation, This paper presents an artillery battalion autonomous firing decision-making method suitable for 'man is not in the loop' combat simulation, The method comprises the following steps: judging enemy situation information, judging shooting force, sorting targets to be shot, determining shooting task, determining damage index, determiningpermissible shooting duration, sorting bomb types, determining shooting force and shooting ammunition (including type and quantity), determining shooting speed, issuing shooting order, etc. The invention has the advantages that the technical proposal is adopted, the invention is a military concept simulation field, basically conforms to the general operational use principle and flow of the artillery battalion, the adopted decision method is simple in calculation and easy to realize, and has good application prospect in the operational simulation, especially in the large-scale operational simulation.

The invention relates to the technical field of modeling and simulation, and provides an intelligent firing decision method for artillery regiment, mainly including receiving information of enemy situation and determining target to be fired, judging shooting conditions, sorting targets to be shot, determining shooting tasks, determining damage indexes, determining permissible shooting duration, sorting bomb types, sorting shooting units, determining shooting force and shooting ammunition (including types and quantity), determining shooting speed, and issuing shooting orders, etc. The method ofthe present invention is suitable for the combat simulation modeling that man is not in the loop, according to the general operational principles and procedures of artillery group, can effectively make up for the shortcomings of the operational scenario that the combat mission of the combat entity is set only according to the combat determination of the belligerent, and the shooting action of theartillery group in the whole combat process need not be planned beforehand, which reduces the difficulty of the operational scenario preparation. This method is simple in calculation and easy to be programmed, and has a good application prospect in combat simulation, especially in large-scale combat simulation.

The invention discloses a general-purpose relay RTDS simulation modeling method with an adjustable return coefficient and actuation time. On the basis of the RTDS self-definition programming technique, real-time performance of an RTDS is utilized, sequential execution stationarity of program codes is depended on and combined with flexibility of variable data definition, the correct stepping recurrence relation between a current moment and a previous moment of various state variables of a built model in numerical value is guaranteed in the mode that historical data are stored in static variables, and therefore the built model can meet the simulation requirements of two basic physical properties that the return coefficient of a practical relay protection device is less than 1 and actuation time is not equal to 0. The general-purpose relay RTDS model obtained by means of the method can accurately simulate physical properties of a practical relay, has the same physical effect with the practical relay protection device and effectively solves the problem that an existing model base of the RTDS is lack of high simulation degree relay models.