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Articles 4861 - 4890 of 13783

Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering

Sigma Point Kalman Filters For Re-Entry Ballistic Target Tracking, Chunling Wu, Yongfeng Ju, Hu Ping, Chengdong Duan Jul 2020

Sigma Point Kalman Filters For Re-Entry Ballistic Target Tracking, Chunling Wu, Yongfeng Ju, Hu Ping, Chengdong Duan

Journal of System Simulation

Abstract: A new kind of sigma-point Kalman filter was proposed, quadrature Kalman filter(QKF), for the purpose of re-entry ballistic target tracking applications. The new filter linearized the nonlinear functions using statistical linear regression method through a set of Gaussian-Hermite quadrature points that parameterized the Gaussian density. The simulation experiment compared this new sigma point filter with EKF, DDF and UKF. Simulation results show that the estimation errors of all sigma point filters are all lower than that of EKF. The estimation error of QKF is lower than that of UKF, and its filtering credibility is almost same as that of …

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Coral Reefs Optimization For Solving Parameter Identification In Permanent Magnet Synchronous Motor, Yawei Quan, Tian Na, Zhicheng Ji, Wang Yan Jul 2020

Coral Reefs Optimization For Solving Parameter Identification In Permanent Magnet Synchronous Motor, Yawei Quan, Tian Na, Zhicheng Ji, Wang Yan

Journal of System Simulation

Abstract: High accuracy identification of parameters in permanent magnet synchronous motor (PMSM) is the basis of controller design. According to the drawbacks of slow speed, big error, and small number of parameters in classical particle swarm optimization (PSO) and least square method, Coral Reefs Optimization (CRO) was proposed to solve the parameter identification problem in PMSM. In order to improve the identification accuracy, the parameter setting in CRO was adjusted. The mathematical model of PMSM in coordinate system was established, CRO, PSO and RLS were applied to identify parameters in PMSM, and were verified in Matlab/Simulink for comparison. The simulation …

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Impact Analysis On Distribution Prediction Of Stipa Species Under Climate Change, Xuqing Tang, Jianlin Li Jul 2020

Impact Analysis On Distribution Prediction Of Stipa Species Under Climate Change, Xuqing Tang, Jianlin Li

Journal of System Simulation

Abstract: Based on the actual climatic data from 1981 to 2000 in Northeast China, the predicted climatic data and the actual distribution data of Stipa species, 12 climatic factor indicators affecting Stipa species distribution were extracted combining with similar biological and ecological characteristics of Stipa. By introducing Gauss Competitive Exclusion Principle and the statistical analysis method, a competitive stochastic mathematical model of the distribution of Stipa was built, and the corresponding algorithm was given. The forecast figures were obtained for the optimal, medium and general adaptable distribution of the five Stipa species from 2041 to 2050 and from 2091 …

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Multi-Channels Converged Communication Method In Mobile Terminals Based On Virtual Link, Wenqiang Yao, Kaisheng Xu, Feng Jie, Yanqin Zhu, Lingzhi Li Jul 2020

Multi-Channels Converged Communication Method In Mobile Terminals Based On Virtual Link, Wenqiang Yao, Kaisheng Xu, Feng Jie, Yanqin Zhu, Lingzhi Li

Journal of System Simulation

Abstract: In the region overlapping multiple radio signals such as 3G/4G and Wi-Fi, the mobile terminal usually only chooses one of sigals to transmit data. It limits the access bandwidth of the mobile terminal, influences the upper applications running on the devices, and increases the costs of data communication. A new multi-channels converged communication method was proposed according to the analysis of existing technology. The method used the virtual link receiving all the packets sent by upper applications, and sent the packets simultaneously in multi-channels according to the status of every physical channel. The specific implementation processes were given about …

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Mixed H2/H∞ Optimal Pid Control For Superheated Steam Temperature System, Weiping Liang, Jiarong Wang Jul 2020

Mixed H2/H∞ Optimal Pid Control For Superheated Steam Temperature System, Weiping Liang, Jiarong Wang

Journal of System Simulation

Abstract: Aiming at the non-linear, large inertial, uncertain parameters and multi-disturbances of the main steam temperature object in power plants, a mixed H2/H∞ optimal PID control scheme was designed. The multiplicative perturbed boundary of the H∞ and the effective range of the PID controller parameters were given under the system being closed-loop stability. An improved gravitational search algorithm was proposed in order to obtain optimum performance indicators. The effectiveness of the algorithm was supported through testing on typical test functions, then the algorithm was applied to optimize the parameters of the main steam temperature system Mixed …

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Bifurcation Multi-Path Grooming Algorithm In Multi-Granularity Transport Network, Guangwei Lei, Xingwei Wang, Huang Min, Zhao Yue Jul 2020

Bifurcation Multi-Path Grooming Algorithm In Multi-Granularity Transport Network, Guangwei Lei, Xingwei Wang, Huang Min, Zhao Yue

Journal of System Simulation

Abstract: Recent years, with the rapid development and wide use of multi-granularity transport network, the pressure of backbone transmission network has been alleviated to some extent. However, the growing user demands to the Internet make network power consumption and bandwidth still face severe challenge. To deal with it, a bifurcation multi-path grooming algorithm was proposed and its associated bandwidth allocation strategy was devised to reduce power consumption and blocking rate. The proposed algorithm has been implemented by simulation and the evaluation results show that its performance is better than that of the benchmark.

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Fault Modeling And Simulation Of Swing Infrared Earth Sensor, Jiansong Chang, Xinyan Liu Jul 2020

Fault Modeling And Simulation Of Swing Infrared Earth Sensor, Jiansong Chang, Xinyan Liu

Journal of System Simulation

Abstract: In order to meet the requirements of refined modeling and fault simulation, function modules of swing infrared earth sensor (IRES) was identified according to its working principle, main fault modes of each module was analyzed, mathematical fault model based on physical mechanism was designed, and a program for normal and fault simulation was written. The refined fault model can calculate attitude angles exactly, reflect signal relationship between inside modules, and simulate various fault modes effectively. The model can be used in simulating, testing and fault diagnosis and so on.

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Information Collaboration Model Of Cloud Computing Supply Chain Based On Multi-Agent, Wuxue Jiang, Xuanzi Hu, Minxia Liu, Yuqiang Chen Jul 2020

Information Collaboration Model Of Cloud Computing Supply Chain Based On Multi-Agent, Wuxue Jiang, Xuanzi Hu, Minxia Liu, Yuqiang Chen

Journal of System Simulation

Abstract: In order to improve the work efficiency of supply chain in cloud computing and avoid the risks of cloud computing, a cloud-based supply chain information coordination model was proposed. The model has two basic states which are online status and offline status, at online state the cloud computing center is responsible for coordination of the entire supply chain information, and at offline state each node continues to complete the transaction order through the history record and each node information in the cloud data center. Simulation based on Multi-agent shows that the order completion rate in offline status is …

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Simulation Contrast Analysis On Rigid And Flexible Movements Of Multi-Fins Coordinated Propulsion Mode, Xie Ou, Boquan Li, Yan Qin Jul 2020

Simulation Contrast Analysis On Rigid And Flexible Movements Of Multi-Fins Coordinated Propulsion Mode, Xie Ou, Boquan Li, Yan Qin

Journal of System Simulation

Abstract: A novel type of bionic underwater hybrid propulsion mode was proposed. By the means of the coordination control of the multi-fins, a propulsion mode combines the undulation propulsion of fish and the jet propulsion of jellyfish was developed, and was capable of achieving a serial of motions: undulating, jetting, turning, submerging, emerging and braking. The rigid and flexible water stabilizer kinematics model was established and the numerical simulation was performed for undulation and jet propulsion mode of the rigid and flexible water stabilizer by using a CFD method. The simulation results show that the dynamic characteristics and swimming performance …

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Simulation Realization Of Netted Radar Data Fusion Systems, Zhijie Chen, Bin Rao, Yongzhen Li, Zhiwei Zong Jul 2020

Simulation Realization Of Netted Radar Data Fusion Systems, Zhijie Chen, Bin Rao, Yongzhen Li, Zhiwei Zong

Journal of System Simulation

Abstract: The system realization problem of netted radar data fusion systems was focused on. The design aspects of functionality, constitution and realization of netted radar systems were investigated. An architecture consisted of a CPCI (Compact PCI) industrial control computer and multiple digital DSP (Digital Signal Processing) processors was developed. The software workflows of each netting mode (centralized fusion and distributed fusion) were given and the simulation results related to typical scenarios were illustrated. The system can serve as a testing platform of efficiency evaluation relating to radar netting in the presence of electronic countermeasures.

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Processing Method Of Space Locations Of Virtual Human Based On Wavelet Transform And Kalman Filter, Liang Feng, Zhili Zhang, Xiangyang Li, Zhibo Tang Jul 2020

Processing Method Of Space Locations Of Virtual Human Based On Wavelet Transform And Kalman Filter, Liang Feng, Zhili Zhang, Xiangyang Li, Zhibo Tang

Journal of System Simulation

Abstract: For the problem of inadequate smoothness of space location coordinate and large error of acceleration information, a processing method based on wavelet transform and Kalman filter was proposed to realize the valid control of virtual human' motion process after eliminating error points of motion data. Main acceleration information could be achieved based on the filter method of wavelet transform, and weak tracking Kalman filter was introduced to realize the amendment and smoothness of space location coordinates and acceleration information. Compared to the conventional Kalman filter method, the proposed method could achieve more exact and smooth space location and acceleration …

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Design And Implementation Of Real Confrontation Oriented Simulation Models For Artillery Firepower, Baoyu Xu, Hongjun Zhang, Guo Hong, Guangming Xu Jul 2020

Design And Implementation Of Real Confrontation Oriented Simulation Models For Artillery Firepower, Baoyu Xu, Hongjun Zhang, Guo Hong, Guangming Xu

Journal of System Simulation

Abstract: Aiming at the training requirement of real confrontation, a simulation method based on real equipment for artillery firepower was proposed on the basis of the analysis of artillery firepower attacking behavior characteristics. By comprehensive use of the sensor, exterior ballistic calculation, satellite positioning, geographic information and damage assessment technology, using a embedded simulation method, a simulation model of artillery firepower fused information collection of artillery firing data, ballistic endpoint simulation and damage assessment was built, which could reflect systematically and comprehensively artillery firepower attacking process and the result of the strike in the actual combat environment. The model …

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Semantic Knowledge Base Constructed From Chinese Online Encyclopedia, Liu Jian, Hongbo Xu, Huifeng Tang, Yantao Jia, Xueqi Cheng Jul 2020

Semantic Knowledge Base Constructed From Chinese Online Encyclopedia, Liu Jian, Hongbo Xu, Huifeng Tang, Yantao Jia, Xueqi Cheng

Journal of System Simulation

Abstract: The traditional construction methods about semantic knowledge base cost a lot of manpower and material resources. In addition, knowledge is difficult to acquire timely updates. In view of the deficiency, a new semantic representation model was put forward based on semantic ontology and hypergraph theory which was named dynamic knowledge network. Then, this model was described in detail, which included theoretical basis and model elements. Under the guidance of the model, the extraction methods and storage structure were studied about semantic knowledge. A Chinese semantic knowledge base was semi-automatic constructed using Chinese 360 Encyclopedia data which could efficiently provide …

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Qos-Aware Scheduling For Data Intensive Workflow, Wan Cong, Cuirong Wang, Wang Cong Jul 2020

Qos-Aware Scheduling For Data Intensive Workflow, Wan Cong, Cuirong Wang, Wang Cong

Journal of System Simulation

Abstract: The development of technology enables people to access resources from different data centers. Resource management and scheduling of applications, such as workflow, that are deployed on the cloud computing environment have already become a hot spot. A QoS-aware scheduling algorithm for data intensive workflow on multiple data center environment was proposed. Scheduling data intensive workflow on multiple data center environment has two characteristics: A large amount of data is distributed in different geographical locations, the process of data migration will consume a large amount of time and bandwidth; secondly, the data centers have different price and resources. Data migration …

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Approach To Process Smart Grid Time-Serial Big Data Based On Hbase, Wang Yuan, Tao Ye, Yuan Jun, He Wei Jul 2020

Approach To Process Smart Grid Time-Serial Big Data Based On Hbase, Wang Yuan, Tao Ye, Yuan Jun, He Wei

Journal of System Simulation

Abstract: With the development of critical theories and technologies in Internet of things (IOT), more and more attentions have been focused on the IOT applications. Smart Grid is one of the typical IOT applications on which a huge number of sensors have been deployed to gather and generate time-serial data to make sense of the running states of the key devices. How to apply these data to make smart grid running secure and stable is a hot research topic. By considering the fact that smart grid is characterized by a huge number of devices, a huge amount of data and …

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Analysis Of Rubber Conveyor Belt Sag Resistance Experiment Table Dynamics, Mao Jun, Wang Xin, Hongyue Chen Jul 2020

Analysis Of Rubber Conveyor Belt Sag Resistance Experiment Table Dynamics, Mao Jun, Wang Xin, Hongyue Chen

Journal of System Simulation

Abstract: To study the dynamic characteristics of rubber conveyor belt sag resistance bench working process, by hydraulic cylinder pressure, roll eccentricity error and st2000 conveyor belt thickness error as system incentive, a 3-DOF dynamics sag resistance test bench dynamic model was established. The model was solved by using Simulink. The results show that: as provided by the hydraulic cylinder pressure force of 10, 000 N, in the time domain, the vibration of the idler roller and pass roller slants big, which need to improve the connection stiffness. In the frequency domain, the excitation frequency and the natural frequency have larger …

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Data Management Of Data Processing Framework In Green Data Center, Zhang Xiao, Gao Yuan, Xiaoliang Wang, Yiyong Ge, Haixiang Yang, Shupeng Wan Jul 2020

Data Management Of Data Processing Framework In Green Data Center, Zhang Xiao, Gao Yuan, Xiaoliang Wang, Yiyong Ge, Haixiang Yang, Shupeng Wan

Journal of System Simulation

Abstract: Using renewable energy in data center is an environment-friendly way to solve the problem of high energy consumption of data center. Since renewable energy is variable, delaying the jobs which has no strict deadline i a widely used strategy to maximize the usage of renewable energy. Meanwhile, turning the idle servers off can further reduce energy consumption. If the data required by the jobs to be processed are unavailable, some servers in sleep state need to be reactivated to guarantee that the data required by the jobs are available. Such operation may lead to energy waste due to the …

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Computational Investigation Into Thermal-Mechanical Coupling Characteristics Of Disc Brake Under Anti-Lock Braking Condition, Lijun Zhang, He Zhen, Dejian Meng Jul 2020

Computational Investigation Into Thermal-Mechanical Coupling Characteristics Of Disc Brake Under Anti-Lock Braking Condition, Lijun Zhang, He Zhen, Dejian Meng

Journal of System Simulation

Abstract: The braking condition has great influence on the thermal-mechanical coupling characteristics of disc brake. A three-degree-of-freedom dynamic model of braking vehicle was built. The braking force was determined by an anti-lock braking system (ABS) which adopted the threshold-logical control strategy of wheel slip rate. With the model, anti-lock braking processes on dry and wet were simulated. In the meantime, for the sake of comparison, non-anti-lock braking processes were simulated on corresponding road. A thermal-mechanical coupling finite element model of a ventilated disc brake was established. Thermal-mechanical coupling characteristics of brake disc and brake lining were calculated under different braking …

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Study On Aircraft Scheduling Optimization Based On Improved Genetic Algorithm, Yaohua Li, Wang Lei Jul 2020

Study On Aircraft Scheduling Optimization Based On Improved Genetic Algorithm, Yaohua Li, Wang Lei

Journal of System Simulation

Abstract: Aircraft scheduling was studied, and an optimization model of aircraft assignment based on the objective function of maximize total profit was suggested. It considered its cost and benefits by combining fleet and aircraft. In the view of the feature of this model, the innovation of genetic algorithm chromosome was carried on, and these chromosomes formatted chromosome groups. The groups interior could cross over and mutate, and the probability of crossover and mutation could dynamically adjust in accordance with adaptive values to accelerate the convergence speed, the model was resolved fast in this way. In the process of simulation with …

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Control Allocation Method For Split-Drag-Rudders With Asymmetrical Deflection, Xiaobo Qu, Weiguo Zhang, Jingping Shi Jul 2020

Control Allocation Method For Split-Drag-Rudders With Asymmetrical Deflection, Xiaobo Qu, Weiguo Zhang, Jingping Shi

Journal of System Simulation

Abstract: The split drag rudders (SDRs) were usually used for the yaw control of tailless flying wing aircraft with the symmetric deflection mode. This approach was simple and effective, but the upper and lower deflectors of the SDRs were constrained to deflect symmetrically, limiting the distribution and control mode of the deflectors, reducing the maximum available moment in pitch axis and roll axis, affecting the handling performance of the aircraft flying at low speed. A certain flying wing UAV was used as the study model. The CFD method was adopt to investigate the aerodynamic characteristic of SDRs operating in either …

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Simulation And Research On Surface Subsidence Caused By Abandoned Goaf Under Earthquake, Tiejun Cui, Yundong Ma, Laigui Wang Jul 2020

Simulation And Research On Surface Subsidence Caused By Abandoned Goaf Under Earthquake, Tiejun Cui, Yundong Ma, Laigui Wang

Journal of System Simulation

Abstract: To understand the overlying rock strata caused by filling and abandoned goaf under earthquake, ensuring that the upper surface of subgrade is not due to the earthquake generating additional settlement which affects normal use, the goaf and the overlying rock strata were simulated with filling rate(0.85, 0.9, 0.95) and earthquake acceleration(0.2 g, 0.3 g, 0.4 g). Simulation using PFC3D as platform, modeling of complex strata, and the introduction of filling and the simulation method of earthquake, the overlying rock strata migration, stress, and the surface of the subgrade settlement characteristics were obtained. The additional earthquake surface subsidence law was …

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Redundancy Allocation Optimization Design For Complex System Based On Simulation, Haidong Du, Junhai Cao, Wu Wei, Xu Dan Jul 2020

Redundancy Allocation Optimization Design For Complex System Based On Simulation, Haidong Du, Junhai Cao, Wu Wei, Xu Dan

Journal of System Simulation

Abstract: For the redundancy question of complex system reliability design, from the angle of product design, on the basis of sensitivity analysis of different design program, it has be proved to add redundancy design for subsystem with lower reliability and less redundancy will enhance the probability of reliability more for complex system. On the foundation of above research, the program screening simulation experiment was designed according the related restraint and optimization algorithm for redundancy design was proposed. An example of series-parallel connection system was given, obtaining the optimization design program based on Anylogic software to prove the rationality and effectiveness …

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Simulation Research For Highway Maintenance Management System Based On System Dynamics, Zhang Hong, Fangmin Ren, Rongbei Zheng Jul 2020

Simulation Research For Highway Maintenance Management System Based On System Dynamics, Zhang Hong, Fangmin Ren, Rongbei Zheng

Journal of System Simulation

Abstract: It is necessary to study the long-term and dynamic relationships between highway maintenance efficiency and stakeholders, thus helping decision-making on the policies and maintenance plans around the highway maintenance issue. Based on analyzing dynamics and complexities of highway maintenance system, the system dynamics model for the highway maintenance simulation system was established. This study was aimed at simulating and evaluating the long-term dynamic relationships of the interactions among the highway pavement performance, operator's maintenance plans, users' satisfaction and administration department's budget allocation scheme for a long time period. The effectiveness and application of the proposed model were demonstrated …

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Research On Face Recognition Method Under Uncontrolled Illumination Variation, Kong Rui, Zhang Bing Jul 2020

Research On Face Recognition Method Under Uncontrolled Illumination Variation, Kong Rui, Zhang Bing

Journal of System Simulation

Abstract: A new face recognition algorithm is proposed with high recognition rate under uncontrolled illumination conditions. The new algorithm process face images in advance using Weber local descriptor, which means that the processed image is insensitive to illumination changing. An improved linear discriminant analysis algorithm is adopt for feature extracting, finally, nearest neighbor classifier based on Euclidean distance is applied to classify. The new algorithm is tested on Yale and The Extended Yale Database B face database respectively, in comparison with classic face recognition algorithms, the performance of the proposed method is superior to other's under uncontrolled illumination variation …

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Spam Filtering Based On Variable Precision Rough Set Decision Tree, Wang Jing, Xingwei Wang, Zhao Yue Jul 2020

Spam Filtering Based On Variable Precision Rough Set Decision Tree, Wang Jing, Xingwei Wang, Zhao Yue

Journal of System Simulation

Abstract: Email is favored by people and has become one of the most universal information communication methods, inspired by its convenience and low cost. However, E-mail has also been abused by malicious people. As a result, Internet has been polluted by spam. Spam not only wastes bandwidth resource, disrupting people's normal life and work, but also influences routine application of mail servers and poses a serious threat to Internet security. Decision tree algorithm was utilized to train extracted mail head feature information to construct a decision tree, which could be further used to filter spam. Variable precision rough set model …

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Adaptive Harmony Pso Based Trusted Qos Routing Scheme, Xinxin Sun, Xingwei Wang, Huang Min Jul 2020

Adaptive Harmony Pso Based Trusted Qos Routing Scheme, Xinxin Sun, Xingwei Wang, Huang Min

Journal of System Simulation

Abstract: With the continuous expansion of the network scale and the growing number of new applications, the Internet is faced with the challenges of security, dynamicity, heterogeneity and other problems. The emergence of new businesses brings higher demands on network quality of service (QoS) than before. At the same time, a huge amount of network security problems lead to people not being trusted on network. The trustworthiness of the networks and the QoS routing were investigated. A trusted QoS routing scheme based on adaptive harmony PSO search algorithm was proposed with QoS satisfaction degree and trustworthiness value satisfaction degree considered …

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Recent Advances In Finite Element Simulation Of Machining Processes, Caixu Yu, Chunbin Cai, Huang Cui, Erliang Liu Jul 2020

Recent Advances In Finite Element Simulation Of Machining Processes, Caixu Yu, Chunbin Cai, Huang Cui, Erliang Liu

Journal of System Simulation

Abstract: Recently, the finite element simulation technology has been widely applied in machining simulation and has played an irreplaceable role in the investigations of machining mechanism of metal and composite materials, optimization of cutting parameters,etc. The importance of finite element simulation, commonly used software and material constitutive model were introduced. The latest research progress of the finite element simulation of cutting at home and abroad was summarized, including the simulation of chip morphology, the simulation of cutting force and cutting temperature, tool wear simulation, the machined surface integrity, simulation of the effect of multi-steps cutting on cutting process and finite …

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Study Of Modified Particle Swarm Optimization Algorithm Based On Adaptive Mutation Probability, Huang Song, Tian Na, Zhicheng Ji Jul 2020

Study Of Modified Particle Swarm Optimization Algorithm Based On Adaptive Mutation Probability, Huang Song, Tian Na, Zhicheng Ji

Journal of System Simulation

Abstract: Mutation operator is an effective method to solve the premature of particle swarm optimization. According to the characteristic of population diversity, a modified particle swarm optimization based on adaptive mutation probability and hybrid mutation strategy was proposed. Aggregation degree was introduced to adjust the mutation probability of each generation, and a hybrid Gaussian and Cauchy mutation based on the global-best position and an adaptive wavelet mutation based on the worst personal-best position were carried out. The simulation of the comparisons with other particle swarm optimizations with mutation operator on matlab was proposed. The results demonstrate that the proposed algorithm …

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Bernstein Neural Network Chaotic Sequence Prediction Based On Phase Space Reconstruction, Hongli Zhang, Ruiguo Li, Wenhui Fan Jul 2020

Bernstein Neural Network Chaotic Sequence Prediction Based On Phase Space Reconstruction, Hongli Zhang, Ruiguo Li, Wenhui Fan

Journal of System Simulation

Abstract: In view of the low prediction accuracy and the complex structure of traditional BP neural network, RBF neural network and AR model, a new prediction method with the combination of phase space reconstruction and Bernstein neural network was proposed, and PSO algorithm was used for parameters optimization of combination forecast model. Taking Sprott-J chaotic system and traffic flow system as models respectively, the combination of autocorrelation and Cao method was used to reconstruct phase space of chaotic time sequence, the refactoring phasor of time delay and Bernstein neural network were used to establish the prediction model, and do comparative …

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Application Research On Children's Indoor Fire Escape Education System Based On Virtual Reality Technology, Chunhua Hu, Xiaomei Chun, Shihong Chen Jul 2020

Application Research On Children's Indoor Fire Escape Education System Based On Virtual Reality Technology, Chunhua Hu, Xiaomei Chun, Shihong Chen

Journal of System Simulation

Abstract: It is significant to study children’s fire escape education in the virtual reality. The existing fire escape educations for children mostly adopt the ways of watching books and videos, lacking vitality and interactivity. According to the psychological characteristics of children, the models for virtual fire scene and the virtual character were built using the 3Ds Max. Based on Virtools platform, a game style of children's indoor fire escape education system was designed, with the integration of human-computer interaction, voice, smoke, and animation demo. Users experience the fire escape by auditory, visual and virtual behavior, with controlling virtual character to …

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