Design Of Navigation Electronic Interference System For Flight Simulator,
2020
1. 93199 Army Flight Simulator Techonology Research Institute, Harbin 150001, China;
Design Of Navigation Electronic Interference System For Flight Simulator, Zengbo Zhou, Chen Xi, Zhenyu Sun, Li Xiang
Journal of System Simulation
Abstract: Modern military combat pays more attention to the electronic interference and anti interference, as the important component, the aircraft navigation system is one of the main objects attacked by enemy electronic jamming. In order to simulate the electronic jamming influence on navigation performance of the system, the establishment of an electronic jamming system in aircraft engineering simulator, was designed for the flight simulator interference model and statistical model frame work, and according to the integrity of the system testing and calculation results, the interference was divided into five levels, which not only specified the electrical interference, but also …
Self Formation Development Mode With Vopes,
2020
Vision V & S Technology Co.,Ltd, Chengdu 610045, China;
Self Formation Development Mode With Vopes, Changming Fu, Chunsheng Long, Tang Hong
Journal of System Simulation
Abstract: To solve the growing conflict between requirements and applications in simulation/visualization, self-formation development mode was proposed: domain experts DIY by WYSWYG in a self-adapting process. VOPES (Visual Open platform for Engineering System) was briefly introduced: integrated architecture, system modeling tools, visualization tools, automatic generation, debugging, deploying, and runtime infrastructure. VOPES enables domain expert to produce distributed simulation/visualization application, no need of coding, complex program skill, hard rules like UML, HLA, DDS, etc. VOPES can be widely used in applications like mission simulation, equipment demonstration, virtual range, training, ITEM. It is especially suitable to the fast, agile, complex simulation/visualization application, …
Boiler Combustion Optimization Based On Bayesian Neural Network And Genetic Algorithm,
2020
Beijing Institute of Information Control, Beijing 100048, China;
Boiler Combustion Optimization Based On Bayesian Neural Network And Genetic Algorithm, Haiquan Fang, Huifeng Xue, Li Ning, Fei Xi
Journal of System Simulation
Abstract: Neural network and genetic algorithm have been extensively used in boiler combustion optimization problems. But the traditional Back Propagation neural network's generalization ability is poor. The Bayesian regularization can improve the neural network's generalization ability. A boiler combustion multi-objective optimization method combining Bayesian regularization BP neural network and genetic algorithm （Bayes NN-GA）was researched. A number of field test data from a boiler was used to simulate the Bayesian neural network model. The results show that the thermal efficiency and NOx emissions predicted by the Bayesian neural network model show good agreement with the measured, and the optimal results show …
Attitude Control Of Three-Axis Flexible Satellite Based On Active-Disturbance-Rejection Sliding Mode Method,
2020
1. Beihang University State Key Laboratory of Virtual Reality Technology and Systems, Beijing 100191, China; ;2. Beihang University School of Automation Science and Electrical Engineering, Beijing 100191, China; ;3. Science and Technology on Aircraft Control Laboratory, Beijing 100191, China;
Attitude Control Of Three-Axis Flexible Satellite Based On Active-Disturbance-Rejection Sliding Mode Method, Yunjie Wu, Li Chen, Ma Zheng
Journal of System Simulation
Abstract: By using Kane method, a mathematical model with CMGs as actuators was built for the three-axis satellite with flexible appendages. An active-disturbance-rejection sliding mode controller was designed for the demand about quickness and stability in attitude control. This controller observed the disturbance by expanded state observer, and compensated the output. The slide mode method in the controller made the system quick and stable. The simulation experiments show that the controller could control the attitude of three-axis satellite efficiently and weaken the vibration of flexible solar panel. The active-disturbance-rejection sliding mode controller shows the merits of both active-disturbance-rejection method …
Least-Energy Maneuver Of Five-Link Manipulator Constrained Within Tunnel Space Using Direct Collocation,
2020
College of Information and Communications, Zhejiang Industry and Trade Vocational College, Wenzhou 325003, China;
Least-Energy Maneuver Of Five-Link Manipulator Constrained Within Tunnel Space Using Direct Collocation, Xiuqiang Pan, Chengcai Mei, Junjie Chen
Journal of System Simulation
Abstract: Optimal control and designs least-energy maneuver control laws for a five-linked manipulator were applied in order to carry out designated tasks in a confined space. Lagrange-Euler equation described the relationships between the actuators and system dynamics. Euler-Lagrange formulation indicates how optimization can be achieved when optimum occurs. Direct collocation method was introduced in order to solve this highly nonlinear dynamic optimal control problem. Simulations were done to exploit how the manipulator reacted to the constraint. In this study, the diameter of the cylindrical space was shrunken each time by 0.1 meters. The value of the cost function and …
Research Of Multi-Views Based Weapon And Equipment Simulation Model Architecture,
2020
1. Navy Arming Academe Postdoctoral Workstation, Beijing 100161; ;2. 92941 Troop, Huludao, Liaoning 125001; ;
Research Of Multi-Views Based Weapon And Equipment Simulation Model Architecture, Chunguang Peng, Jianhui Deng, Zhang Bo
Journal of System Simulation
Abstract: ：It's an important approach to build reasonable and complete simulation model architecture for promoting the simulation interoperability, establishing simulation model standards and promoting reusability of models and codes. Some problems existed in the research of simulation model architecture were analyzed. The weapon and equipment simulation model architecture describing method based on multi-views was brought out by using the system engineering theory, which emphasized on the complicated relations between modes and its environment. The method could describe simulation model architecture from different views of different users. Therefore, based on DoDAF and the popular software architecture, five-view models of weapon …
Research On Equipment Operation Capabilities Requirements Based On Exploratory Simulation Experiment Methodology,
2020
1. Naval Command College, Nanjing 210016, China; ;
Research On Equipment Operation Capabilities Requirements Based On Exploratory Simulation Experiment Methodology, Zongrui Yan, Yinhua Wu, Chen Yong, Jianshu Dong
Journal of System Simulation
Abstract: Analysis on equipment operation requirements is a very difficult problem which has included a lot of uncertain factors, and it can assist peoples to determine whether the equipment item should be started. Exploratory simulation experiment methodology which is synthetized by exploratory analysis and war fighting experimentation can provide a better service for many problems about the equipment demonstration. Through the summary on basic applications exploratory simulation experiments related out comes and its analysis for concrete implementation steps equipment demonstration areas, a tactical level exploratory simulation methodology and its concrete implementation steps were proposed for the operational requirements analysis. An …
Research And Development Of Eicas System Emulator Based On Idata,
2020
1. Beijing University of Aeronautics & Astronautics, Beijing 100191, China; ;2. Air force Training Equipment Research Institute, Beijing 100195, China;
Research And Development Of Eicas System Emulator Based On Idata, Baoming Zhao, Hongshu Cheng, Cancan Liu, Jiying Li
Journal of System Simulation
Abstract: Some modeling tools can't design simulation instruments efficiently and conveniently such as OpenGL, etc. A cockpit display development tool of IData was worked in which has graphical user interface and could develop a system easily and rapidly. IData is a method of designing maps and pictures, it can respond variables of application and controlling events in real time and develop graphical interface by clicking on the menu. So IData can reduce the time of graphic development and integration in simulation. In order to render maps in real time, IData used a powerful graphic editor to model for instruments, and …
Diagnosis Of Aircraft Control Surface Fault Based On Semi-Physical Simulation,
2020
1. School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; ;
Diagnosis Of Aircraft Control Surface Fault Based On Semi-Physical Simulation, Yunlong Li, Xia Jie, Zifang Shi
Journal of System Simulation
Abstract: The aircraft control surface defaults of rudders were mainly divided into jam fault and damage fault. On the basis of the relationship between motor toque and hinge moment, a new method of using the motor voltage was proposed to detect the control surface'faults of rudder. And the method could detect the damage degree of the faults. Torque motor was used to play the role of hinge moment. And the new method was simulated by Semi-Physical system which is consisted of dSPACE system, PC and simulated rudder actuator. The results show that, the damage faults and jam faults can be …
Study On Simulation Modeling Of Dynamics For Landing Gear Of Helicopter With Deck-Landing,
2020
Army 93199 of PLA, Harbin 150001, China;
Study On Simulation Modeling Of Dynamics For Landing Gear Of Helicopter With Deck-Landing, Zhang Liao, Guan Wei, Wang Gang, Li Wei, Pan Long
Journal of System Simulation
Abstract: A simulation mathematics model was advanced which introduced the motion data of the deck at wheels/ground contact point into the dynamics model of the landing gear as follows: the space position and the level vector were obtained by computing the space position and pose of helicopter. The altitude and the level vector of the deck at wheels/ground contact point were obtained by computing the ship movement and the space position of helicopter's wheels. The ground reaction force was solved by that regard negative of relative altitude between the tire and the deck at wheels/ground contact point as the compression …
Research On Live Migration Scheduling Method For Communication Network Simulation System Based On Vmotion,
2020
Xi'an Technological University, Xi'an 710021, China;
Research On Live Migration Scheduling Method For Communication Network Simulation System Based On Vmotion, Yanfang Fu, Gao Xiang, Cheng Bing, Xueyao Feng
Journal of System Simulation
Abstract: In order to make the quality of the simulation service not being affected by load dynamic changes, heuristic scheduling algorithm was proposed. Using the VMotion technology, the virtualization simulation platform was created by calling the SDK. Through the research of the simulation platform application overhead and virtual resource scheduling technology, the single communication network simulation model was modified, implementing the distributed network collaborative simulation which adapted to multiple virtual machines, providing new ideas for the mass communication network simulation system.
Research On Scenario-Driven Component-Based Model Composition Method,
2020
1. Marine College, Northwestern Polytechnical University, Xi'an 710072, China; ;2. National Key Laboratory of Underwater Information Process and Control, Xi'an 710072, China;
Research On Scenario-Driven Component-Based Model Composition Method, Jianchun Zhang, Fengju Kang
Journal of System Simulation
Abstract: To fulfil the requirements for fast, easy and integrated modeling under certain operation conditions, a model composition method of scenario-driven was proposed. Starting with corresponding composition framework, traditional component models were extended through corresponding meta-model and normalization description of scenario was given. Furthermore, a full combat simulation system could be constructed quickly by realizing integrated process including three processes: scenario parse, model search and match. By preliminarily performing underwater weapon system modeling and simulation application, the result shows efficiency of this composition method.
Applying Deep Learning For Cell Detection In Time-Lapse Microscopic Images,
2020
University of Tennessee at Chattanooga
Applying Deep Learning For Cell Detection In Time-Lapse Microscopic Images, Jay Patel
Honors Theses
The budding yeast Saccharomyces cerevisiae is an effective model for studying cellular aging. We can measure the lifespan of yeast cells in two ways: replicative and chronological lifespans. Chronological focuses on the time that a cell can survive. The replicative lifespan (RLS) is the number of cell divisions that a single mother cell can go through before ceases to be dividing. RLS is a measurement of individual cells and is more informative on the aging process than in chronological lifespan. Many genes that influence yeast RLS have been shown to be highly conserved and have a similar effect on aging …
Investigating Single Precision Floating General Matrix Multiply In Heterogeneous Hardware,
2020
Washington University in St. Louis
Investigating Single Precision Floating General Matrix Multiply In Heterogeneous Hardware, Steven Harris
McKelvey School of Engineering Graduate Student Theses & Dissertations
The fundamental operation of matrix multiplication is ubiquitous across a myriad of disciplines. Yet, the identification of new optimizations for matrix multiplication remains relevant for emerging hardware architectures and heterogeneous systems. Frameworks such as OpenCL enable computation orchestration on existing systems, and its availability using the Intel High Level Synthesis compiler allows users to architect new designs for reconfigurable hardware using C/C++. Using the HARPv2 as a vehicle for exploration, we investigate the utility of several of the most notable matrix multiplication optimizations to better understand the performance portability of OpenCL and the implications for such optimizations on this and …
A Systematic Density-Based Clustering Method Using Anchor Points,
2020
Jilin University
A Systematic Density-Based Clustering Method Using Anchor Points, Yizhang Wang, Di Wang, Wei Pang, Ah-Hwee Tan, You Zhou
Research Collection School Of Computing and Information Systems
Clustering is an important unsupervised learning method in machine learning and data mining. Many existing clustering methods may still face the challenge in self-identifying clusters with varying shapes, sizes and densities. To devise a more generic clustering method that considers all the aforementioned properties of the natural clusters, we propose a novel clustering algorithm named Anchor Points based Clustering (APC). The anchor points in APC are characterized by having a relatively large distance from data points with higher densities. We take anchor points as centers to obtain intermediate clusters, which can divide the whole dataset more appropriately so as to …
Intersentiment: Combining Deep Neural Models On Interaction And Sentiment For Review Rating Prediction,
2020
Northeastern University
Intersentiment: Combining Deep Neural Models On Interaction And Sentiment For Review Rating Prediction, Shi Feng, Kaisong Song, Daling Wang, Wei Gao, Yifei Zhang
Research Collection School Of Computing and Information Systems
Review rating prediction is commonly approached from the perspective of either Collaborative Filtering (CF) or Sentiment Classification (SC). CF-based approach usually resorts to matrix factorization based on user–item interaction, and does not fully utilize the valuable review text features. In contrast, SC-based approach is focused on mining review content, but can just incorporate some user- and product-level features, and fails to capture sufficient interactions between them represented typically in a sparse matrix as CF can do. In this paper, we propose a novel, extensible review rating prediction model called InterSentiment by bridging the user-product interaction model and the sentiment model …
A Unified Framework For Sparse Online Learning,
2020
Tencent AL Lab
A Unified Framework For Sparse Online Learning, Peilin Zhao, Dayong Wong, Pengcheng Wu, Steven C. H. Hoi
Research Collection School Of Computing and Information Systems
The amount of data in our society has been exploding in the era of big data. This article aims to address several open challenges in big data stream classification. Many existing studies in data mining literature follow the batch learning setting, which suffers from low efficiency and poor scalability. To tackle these challenges, we investigate a unified online learning framework for the big data stream classification task. Different from the existing online data stream classification techniques, we propose a unified Sparse Online Classification (SOC) framework. Based on SOC, we derive a second-order online learning algorithm and a cost-sensitive sparse online …
Accelerating Exact Constrained Shortest Paths On Gpus,
2020
National University of Singapore
Accelerating Exact Constrained Shortest Paths On Gpus, Shengliang Lu, Bingsheng He, Yuchen Li, Hao Fu
Research Collection School Of Computing and Information Systems
The recently emerging applications such as software-defined networks and autonomous vehicles require efficient and exact solutions for constrained shortest paths (CSP), which finds the shortest path in a graph while satisfying some user-defined constraints. Compared with the common shortest path problems without constraints, CSP queries have a significantly larger number of subproblems. The most widely used labeling algorithm becomes prohibitively slow and impractical. Other existing approaches tend to find approximate solutions and build costly indices on graphs for fast query processing, which are not suitable for emerging applications with the requirement of exact solutions. A natural question is whether and …
Research On Optimizing Lot Sizing Of Job Shop Based On Em_Plant,
2020
College of Management, Tianjin University of Technology, Tianjin 300384, China;
Research On Optimizing Lot Sizing Of Job Shop Based On Em_Plant, Xiaobing Pei, Linlin Tan
Journal of System Simulation
Abstract: Considering maximizing the rate of account and choosing production process time as the optimization objectives to solve the lot sizing optimization problems of job shop, the model about production time under ideal conditions was established, and accordingly the formula of solving theoretical optimal lot sizing was derived. To compensate for the limitations of mathematical modeling and improve the feasibility of the optimal solution, the actual manufacturing operations in job shop was simulated and optimized according to production batch simulation optimization strategy by eM_plant software. By running the simulation model the theoretical optimal solution was amended, to make optimal …
Intelligent Detecting For Infrared Aerial Small Target Based On Non-Subsampled Contourlet Transform,
2020
1. College of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China; ;2. China Airborne Missile Academic, Luoyang 471009, China; ;3. College of Information Engineering, Zhengzhou University, Zhengzhou 450001, China;
Intelligent Detecting For Infrared Aerial Small Target Based On Non-Subsampled Contourlet Transform, Liu Gang, Xingyuan Xu, Zhou Heng, Xitao Zhang
Journal of System Simulation
Abstract: Aiming at the problem of infrared aerospace small target's detecting under complex background, an intelligent algorithm was proposed based on the non-subsampled contourlet transform and BP neutral network. By using the morphologic top-hat transform which had adaptive structural element, some infrared background was suppressed. By defining the center vector of subband coefficients, the proposed method constructed the synthetical image at high frequency and suppressed the complex background further. Subsequently, taking pixel's gray level, horizontal gradient, vertical gradient, diagonal gradient, neighbour mean and neighbour variance as input character vector, a BP neutral network which had three layers was constructed by …
