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4th International Conference on Mechanical and Electrical technology, ICMET 2012

作者： Zhao, Zhiqiang Liu, Zhihua Hao, Jiaxin Science and Technology on Complex land Systems Simulation Laboratory Beijing 100012 China College of Mechaeronics Engineering and Automation National University of Defense Technology Changsha Hunan 410031 China

ISBN: (纸本)9783037855102

In the process of ground simulation object maneuver simulation in large-scale operation simulation, an efficient path planning method based on A*algorithm is proposed. By means of introducing all kind of geography factors and security factors into heuristic function, the plan reaching method solves the problem of finding an optimal path under acquiring enemy's situation and terrain data. Experiment results show that it has effectively raised path planning speed of A* algorithm and the scheme is practical and feasible. © (2012) Trans Tech Publications, Switzerland.

关键词： Motion planning

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Design and realization of the simulation component-based parallel framework for HLA Federate

Design and realization of the simulation component-based par...

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IEEE International Conference on System of systems Engineering (SoSE)

作者： Jing Zhang Yingchao Zhang Qin zhang Yu Chuan fang Guan Wei Li Yong Peng Science and Technology on Complex Systems Simulation Laboratory Beijing Institute of System Engineering China National University of Defense Technology Changsha China

While the difficulty and complexity of simulation system increasing, the development efficiency and execution performance of the large-scale distributed simulation system (LSDSS) must be improved effectively. Furthermore, while the multi-core has become popular hardware, yet the traditional federate mechanism couldn't utilize and schedule the CPU resource, which would limit the simulation performance. Then PFHF, Parallel Framework for HLA Federate, was designed and realized to solve the problem above. PFHF could combine and construct federate from simulation model components, perform simulation engine management, data distribution management, object management, component management and load balancing function, etc., then support the integrated execution environment based on multi-core and parallel technique. Several experiments proved that PFHF could utilize multi-core CPU adequately, and reduce the LSDSS execution time efficiently.

关键词： Load modeling Computational modeling Load management Adaptation models Data models Synchronization Engines

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Study on semi-active suspension system of tracked vehicle based on variable universe fuzzy control

Study on semi-active suspension system of tracked vehicle ba...

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2011 IEEE International Conference on Mechatronics and Automation, ICMA 2011

作者： Kong, Lingjie Zhao, Xinjun Qi, Baili Science and Technology on Complex Land Systems Simulation Laboratory Beijing China

ISBN: (纸本)9781424481149

The suspension system with high performances is an important factor ensuring the tracked vehicle mobility and comfortable in different situations. Magneto rheological dampers, which are semi-active suspension equipment that use magneto rheological fluids to produce controllable force, can be used as smart actuators to reduce the vibrations of mechanical systems. An analytical study is performed in this article to examine the effectiveness of this type of actuator in suppressing the vibrations of a tracked vehicle suspension system. Based on the fluid mechanics theory, an amendment dynamic model of magneto rheological damper is derived. Considering the suspension characteristic and uncertainty of a magneto rheological damper, a variable universe fuzzy controller is designed to achieve a control of active variable damping. The results proved that the derived magneto rheological damper dynamic model is correct and indicated that the designed variable universe fuzzy controller could reduce the tracked vehicle vibration, which will further establish the basis of engineering application for a magneto rheological damper on semi-active suspension. © 2011 IEEE.

关键词： Controllers

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Research on active detection and direction finding method of autonomous underwater vehicle based on vector sensor

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The Journal of the Acoustical Society of America 2012年第4_SUPPLEMENT期131卷 3485-3485页

作者： Qing Ling Xue-li Sheng Yan-yi Yuan Jia Lu Chun-Yan Sun Ye Bai Science and Technology on Complex Ship Systems Simulation Laboratory Beijing 100000 shengxueli@*** Science and Technology on Underwater Acoustic Laboratory Harbin Engineering University Harbin 150001 Science and Technology on Complex Ship Systems Simulation Laboratory Beijing 100000

To resolve the detection and orientation problem of autonomous underwater vehicle which platform is limited, single vector sensor with orientation ability is selected. The method of detection and bearing estimation based on vector sensor and its performance are researched in this paper. Vector sonar synthetical copy correlator and vector sonar synthetical adaptive correlator are put forward here, which use both pressure and velocity information. The composing principle and realizing method of the two processors above are studied and the processing gain, detecting probability and bearing estimation ability of the two are analyzed in acoustic multi-path condition. The theoretical results simulation and experiments show that all methods studied above have better performance than common copy correlation, and in multipath condition, the vector sonar synthetical adaptive correlation does better than vector sonar synthetical copy correlation in the aspect of processing gain and bearing estimation. Keywords: active detection; direction finding; autonomous underwater vehicle; vector sensor; synthetical copy correlator; synthetical adaptive correlator

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Time reversal mirror localization technology based on a high-resolution MVDR algorithm

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The Journal of the Acoustical Society of America 2012年第4_SUPPLEMENT期131卷 3350-3350页

作者： Yan-yi Yuan Xue-li Sheng Qing Ling Jia Lu Ye Bai Mei-ren Jiang Science and Technology on Complex Ship Systems Simulation Laboratory Beijing 100000 China shengxueli@*** Science and Technology on Underwater Acoustic Laboratory Harbin Engineering University Harbin 150001 China Science and Technology on Complex Ship Systems Simulation Laboratory Beijing 100000 China

Minimum variance distortionless response (MVDR) algorithm has broken through the Rayleigh limit restrictions and makes higher resolutions possible. However, they are easily affected by complex underwater acoustic environments and are not sufficiently robust, so it is difficult to use them in real underwater systems. Time reversal mirror technology is a new method of localization, which may be effectively applied to target detection and localization. To improve its robustness, the MVDR algorithm is combined with time reversal mirroring for passive detection and location. This method makes full use of underwater multipath channel information and reduces the effects of complex underwater environments. The performance of time-reversal MVDR that is based on fixed diagonal loading and robust capon beamforming (RCB) was also studied. simulations, water tank experiment and sea trial proved it is feasible and practical Keywords: MVDR; time reversal mirror; robust capon beamforming; passive location

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Study of application of reciprocal scale in quantitative analysis

Study of application of reciprocal scale in quantitative ana...

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5th International Conference on Applied Mathematics, simulation, Modelling, ASM'11

作者： Bai, Hanbin Wei, Jicai Complex Systems Simulation in the Science and Technology Complex Systems Simulation Laboratory Beijing Institute of System Engineer Post BOX. 9702#19 Beijing 100101 China

ISBN: (纸本)9781618040169

Focused on scale problems, this study demonstrated the importance of scale system selection, and necessity of scale system evaluation. The mutually exclusivity of complete consistency under different scale systems has been proved using mathematical contradiction method, and conclusions with practical significances has been obtained through experimental method in this study that the exponential scale is more reasonable than other scales in reciprocal scale system. Although there are some errors exist in the method used by this study, there are also certain practical significances for the analysis that how to increase the accuracy of AHP method.

关键词： Hierarchical systems

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Investigation of multiple-attribute decision making model based on uncertainty

Investigation of multiple-attribute decision making model ba...

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5th International Conference on Applied Mathematics, simulation, Modelling, ASM'11

ISBN: (纸本)9781618040169

There are many uncertainties in multiple-attribute decision making problems so that the reliability and correctness of decision making results depend on the scientifically and reasonably confirmation of attribute weights. Combination assigning method based on optimal eigenvectors which uses multi-objective optimization to integrate subjective and objective weightings was presented in the study so that the limitations of both subjective assigning method and objective assigning method have been overcome. Furthermore, decision making model based on TOPSIS method was also established to obtain more reasonable and scientific method of weightings confirmation method for multi-attribute decision making problems.

关键词： Multiobjective optimization

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Research on rehearsal model of complex system based on Petri Nets

Research on rehearsal model of complex system based on Petri...

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IASTED International Conference on Applied simulation and Modelling, ASM 2011

作者： Ye, Feng Lan, Guo-Xing Cai, Ye-Quan Zhang, Ying-Chao Science and Technology on Complex Systems Simulation Laboratory Post Box. 9702#19 Beijing 100101 China

ISBN: (纸本)9780889868939

The typical operation flow of complex system has analyzed in this paper. The rehearsal model of the complex system based on the principle of Petri Nets has proposed, and illustrated by the case of OODA. The Petri Nets demonstration prototype under a typical scenario of complex system has built. The method of complex system modeling based on Petri Nets is a possible approach to fit in with the needs of constructing a typical rehearsal system of the complex system by existing simulation models (subsystems) in a short time. It meets the requirements of the demonstration research and evaluation mission for the complex system, which carries out in a short-term action cycle and accomplishes the mission in high efficiency.

关键词： Petri nets

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Research on system of systems simulation optimization

Research on system of systems simulation optimization

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IASTED International Conference on Applied simulation and Modelling, ASM 2011

作者： Lan, Guo-Xing Ye, Feng Science and Technology on Complex Systems Simulation Laboratory Post Box. 9702#19 Beijing 100101 China

ISBN: (纸本)9780889868939

Optimization is one of the most important research contents of System of systems (SoS), and computer simulation technology is an effective means to resolving optimization problem. This paper makes further exploration of SoS description and optimization problem, simulation optimization and its development direction. The multilayer optimization to resolving optimization problem of system and hybrid optimization algorithm based on sensitivity analysis and genetic algorithm has proposed. They are used to offer a technological support for SoS optimization problem.

关键词： Sensitivity analysis

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An approach to battlefield data management of targets and environment

An approach to battlefield data management of targets and en...

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2011 International Conference on Information technology, Computer Engineering and Management sciences, ICM 2011

作者： Liang, Yi Xing, Jijuan Company of Postgraduate Academy of Equipment Command and Technology Beijing 101416 China Science and Technology on Complex Systems Simulation Laboratory Beijing 100101 China

ISBN: (纸本)9780769545226

In order to insure the quality of battlefield information guarantee, promote efficiency of data management, and mining these values of data, a data management approach for battlefield data of targets and environment is studied in this paper. Concepts of targets and environment are introduced, these originals of data are discussed and classified, and these characters of data are analyzed. By describing data processing, establishing an organization, grading data qualities, the data of targets and environment is incremented in this processing with a data management standard system of system and the information recommending services base-on knowledge. An example is introduced to illustrate the data management process vividly. Finally the suggestions to improve data management are given. Empirical results show that the approach can insure qualities of information guarantee, promote efficiency of data management and increment data value. By enhancing the data management of targets and environment, costs can be cut down, efficiency can be improved, and resource deployment can be optimized. © 2011 IEEE.

关键词： Information management

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