Virtual Modeling And Motion Simulation Of Under-Actuated Humanoid Multi-Fingered Hand,
2020
Beihang University, Beijing 100191, China;
Virtual Modeling And Motion Simulation Of Under-Actuated Humanoid Multi-Fingered Hand, Yaopeng Zhang, Dangxiao Wang, Lijun Wang, Xikang Qian
Journal of System Simulation
Abstract: With the increase of the number of upper limb disabilities, requirement of humanoid artificial hand is more and more. Under-actuated multi-fingered prosthetic hand based rope driving has simple and compact structure, light weight and it can shape-adaptively grip objects stably and flexibly according to the target object shape. The index finger and thumb for pinch and lateral pinch are very often operated in everyday life. So pinch and lateral pinch largely determine the success of prosthetic hand design. In the guise of the preliminary design stage, combination of the use of MATLAB modeling calculations, and ADAMS movement simulation can …
Composite Kalman Motion Estimation Method Based On Virtual Distance,
2020
School of Computer Science & Engineering, Nanjing University of Science & Technology, Nanjing 210094, China;
Composite Kalman Motion Estimation Method Based On Virtual Distance, Zhizhong Sun, Zehui Lu, Weiqing Li
Journal of System Simulation
Abstract: MEMS inertial sensors applied to human motion capture, but because of the MEMS sensor system errors, the virtual people cannot operate precisely and stably. In order to achieve tracking the movement of an arm accurately, by analyzing the movement of a virtual arm, measuring the distance between the finger of the arm and the center of the object in virtual scene, combined with the virtual arm movement characteristics, a composite Kalman motion estimation method was designed. The model divided arm movement into a uniform model, a uniformly accelerated model and several typical phase models. Depending on the different distance …
Planning Model And Model Solve Method Of Multi-Base Multi -Uav Cooperative Reconnaiance,
2020
1. Navy Submarine Academy, Qingdao 266071;;
Planning Model And Model Solve Method Of Multi-Base Multi -Uav Cooperative Reconnaiance, Li Yuan, Zhang Hui, Sijin Wu
Journal of System Simulation
Abstract: A UAV cooperative reconnaiance planning model with multi-base, multi-UAV, restrictions of target reconnaiance thime windows and target reconnaiance equipment was set up, and the model solve method was proposed. The take-off bases of the UAvs, the type of reconnaiance equipment carried and the target sequences reconnaianced by the UAVs were optimized in company in order to find the reconnaiance plan that need minimum number of UAVs. The process of signal plan forming was devided into two steps, the formation of the initial plan and the formation of the specific plan. The plans were ranked by the primary and secondary …
Heat Kernel Signature Extraction Algorithm Based On Mesh Simplification,
2020
1. School of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China;;2. Beijing Key Laboratory of Big Data Technology for Food Safety, Beijing 100048, China;
Heat Kernel Signature Extraction Algorithm Based On Mesh Simplification, Haisheng Li, Sun Li, Cai Qiang, Cao Jian
Journal of System Simulation
Abstract: Heat kernel signature has been proposed for 3D model feature extraction in recent years. However, the performance of heat kernel signature is inefficient, especially when the models have large number of vertices. Mesh simplification algorithm based on quadric error metrics was used to preprocess 3D model and the heat kernel signature was calculated based on the simplified model. Experiments show that the feature extracting time of the simplified model is less than the original model. The more vertices of the original model, the more obvious of the improved efficiency. The heat kernel signature of simplified model is consistent with …
Subject-Specific Body Segment Parameter Optimization,
2020
1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;;2. University of Chinese Academy of Sciences, Beijing 100049, China;
Subject-Specific Body Segment Parameter Optimization, Lv Xiaolei, Shihong Xia
Journal of System Simulation
Abstract: In conventional methods of physics based character animation, human model are approximated by the rigid body models. However, the human body parts are not as easily described as rigid bodies with defined joints and inflexible geometry, daily varying mass, etc. A body segment parameter optimization method based on the force plate data and motion capture data was proposed. This method optimized the body segment parameter iteratively using the Lagrange constraints based on the contact information and motion capture data. Different subjects took part in the motion capture process with various kinds of motions. A comprehensive evaluation was done for …
Design And Implementation Of Historical Figures Knowledge Graph Visualization System,
2020
1. Department of Information Technology, Beijing Normal University, Beijing 100875, China;;2. Engineering Research Center for Virtual Reality Applications, MOE, Beijing 100875, China;
Design And Implementation Of Historical Figures Knowledge Graph Visualization System, Zhou Yi, Mingquan Zhou, Xuesong Wang, Youliang Huang
Journal of System Simulation
Abstract: With the advent of big data era, knowledge graph and data visualization technology present the data in a structured, visual way and establish a keyword-oriented knowledge system and render the relationship in a fast and clearly way. In this paper, a historical figures entity relationship visualization system has been established by means of data visualization and knowledge graph. In the system,the complex data are divided into character data and event data by data preprocessing. In the parsing stage, a label traversing method and a method based on weight of links are applied to the divided data respectively. With …
Visual Tsunami Simulation And Disaster Risk Assessment,
2020
Computer Science and Technology Department of Ocean University of China, Qingdao 266100, China;
Visual Tsunami Simulation And Disaster Risk Assessment, Xie Cui, Jinjin Xun, Xiaowei Zhou, Junyu Dong
Journal of System Simulation
Abstract: Based on the effectively modeling and visual simulation of the potential tsunami event in the South China Sea, the tsunami generation, propagation, runup and inundation could be visually simulated with multiple scenarios. The inundation probability, the flood inundation area and degree were computed. The location and function of buildings/critical facilities in the study area were extracted and classified by GIS analysis and image processing technology. Then the population distribution was effectively modeled and the vulnerability of people response was estimated for risk assessment combining with the geographical information and the historical disasters record. This improved method considered the inundation …
Research And Design For Indoor Illumination Environment Evaluation System Based On Virtual Reality,
2020
School of Digital Media and Art Design in Hangzhou Dianzi University, Hangzhou 310018, China;
Research And Design For Indoor Illumination Environment Evaluation System Based On Virtual Reality, Chengcheng Jiang, Xiandou Zhang
Journal of System Simulation
Abstract: With the improvement of human life, some kinds of pollution which was neglected have been taken seriously, the light pollution is one of them. Some international organizations have been proposed light pollution prevention technical regulations and guidelines, these kinds of documents only limit the parameters like brightness on the point of lighting design, but not make any worldwide standards system to evaluate and prevent illumination pollution. Therefore, the quality of illumination environment especially indoor illumination environment is difficult to quantify. Indoor illumination environment evaluation system (EvaLighting0.1) aims to build a standard model for indoor illumination environment. In this model, …
Study Of Virtual Human Voice Interaction On The Soothing Effects Of Anxiety,
2020
1. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;;
Study Of Virtual Human Voice Interaction On The Soothing Effects Of Anxiety, Yang Yi, Dongdong Weng, Xue Song, Su Mo
Journal of System Simulation
Abstract: In recent years, virtual human has been widely applied in areas such as medicine, psychology and etc. However, its pacifying effect upon anxiety has not been empirically researched. For that reason, a human system including stereo display, face, motion and voice interaction was built as well as presenting a deep study of virtual human interaction on the soothing effects of anxiety. A stereoscopic virtual human system with high visual fidelity was built using the principle of 3d display. Chinese voice interaction as well as movement and expression driven function was achieved by improving Virtual Human Toolkit development package. With …
Kinect Based Serious Game Of Entertainment And Body Exercise For Elderly,
2020
1. Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China;;
Kinect Based Serious Game Of Entertainment And Body Exercise For Elderly, Chen Hao, Liu Zhen, Chen Tian, Tingting Liu, Cuijuan Liu, Xianying Zhu
Journal of System Simulation
Abstract: China's population is aging rapidly and it is an interesting topic to use information technology to help the elderly to improve the quality of life. Based on the study of relative researches on Kinect applications, a 3D interactive table tennis game for the elderly was designed to improve the upper limb movement of the elderly. Emotion reasoning rules were built with agent theory to let virtual human display the feedback of the user’s operation by facial expression and voice. Preliminary test results show that the game is easy to operate and can provide a new method for elderly to …
Design Of Multi-Rotor Uavs’ Positioning Controller Based On Data Fusion,
2020
Information Engineering University, Zhengzhou 450052, China;
Design Of Multi-Rotor Uavs’ Positioning Controller Based On Data Fusion, Qinghe Wang, Wan Gang, Xuefeng Cao, Lixiang Xie
Journal of System Simulation
Abstract: A dynamical model of multi-rotor UAVs was established, and a positioning controller of multi-rotor UAVs in an indoor environment was designed. In order to improve the accuracy of positioning, the specific tag was set to provide visual data for the UAV in interior space. Fusing the inertial data and the height data obtained from sensors of the UAV with visual data through the Extended Kalman Filter, and the UAV’s position was obtained from the estimation of flight state in real time. Simulation results show that the error of the UAV’s position reduces significantly after fusing the visual data, …
Real-Time Virtual Simulation Of Tidal Bore,
2020
School of Mechanical and Automotive Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China;
Real-Time Virtual Simulation Of Tidal Bore, Guisheng Fang
Journal of System Simulation
Abstract: Tidal bore is a kind of unique natural landscape and tourism resource in the world. Research on characteristic of tidal bore is very useful to help people realize surge prevention and disaster reduction and discover new resources of tidal bore. The traditional research method based on numerical simulation has great deficiencies in the aspect of interaction and real-time and visualization. The virtual simulation method was introduced to simulate the tidal bore. The Navier-Stokes equations were solved by the Smoothed Particle Hydrodynamics method to simulate dynamically the formation, evolution and dissipation of the tidal bore. The phenomena of the intersecting, …
Research On Dynamic Generation Of 3d Lines In City Rail Transit Simulation System,
2020
School of Media, Nanjing University of the Arts, Nanjing 210013, China;
Research On Dynamic Generation Of 3d Lines In City Rail Transit Simulation System, Baoping Yan
Journal of System Simulation
Abstract: The continuous integration of Virtual Reality Art and technology has effectively promoted the visual presentation of the traditional virtual simulation. In the process of design and development, through the realistic 3D modeling design with efficient game engine technology, the actual operation environment of virtual simulation objects could be completely simulated. In this field of combining with art design and technology, with science-based rule of rail transit, abstract and mathematical analysis, independent units were used to mutually splicing mechanism way. This mechanism effectively reduces the resource cost of the running system, it ensures the quality of the picture, and …
Ship Damage Floatation Calculation Based On Stl Model,
2020
Key Lab. of Marine Simulation & Control, Dalian Maritime University, Dalian 116026, China;
Ship Damage Floatation Calculation Based On Stl Model, Chunlei Liu, Yin Yong, Xiaofeng Sun, Xiufeng Zhang, Helong Shen
Journal of System Simulation
Abstract: In order to calculate the damaged floating state of bulk carrier,an iterative algorithm was discussed based on STL model of the ship shell and all the compartments. According to the STL model, the 3D database of ship was established, "weight Added method" and "iterative method" were used to calculate the floating state of the damage ship. Bulk carrier "DOLCE VITA" was taken as an example, “The normal ballast condition at arrival" and "Fully loaded with homogeneous cargo at departure" loading conditions were calculated, compared with calculated value of ship design software NAPA, the average error of trim is …
Application Of Model Prediction Control In Ship Dynamic Positioning Simulator,
2020
Lab. of Marine Simulation and Control, Dalian Maritime University, Dalian 116026, China;
Application Of Model Prediction Control In Ship Dynamic Positioning Simulator, Xiaobin Qian, Yin Yong, Xiufeng Zhang, Xiaofeng Sun
Journal of System Simulation
Abstract: According to the requirement of ship Dynamic Positioning simulator control simulation system, a model predictive control scheme was proposed for DP simulator with the proportional integrator. Ship Dynamic Positioning simulator was mainly used for training and competency assessment of DP operator. At present, DP Simulator mainly depends on imports and there is no domestic DP simulator with independent intellectual property rights. Dynamic Positioning controller is one of the key technologies, which determines the performance of DP simulator. Considering the unknown slowly-varying marine environment disturbance and vessel constraints, a dynamic positioning controller was designed based on the model predictive control …
Interactive Illustration Technologies For Energy Stations Using Unity3d,
2020
1. Department of Computer Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;;2. Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, 200241, P.R.China;;
Interactive Illustration Technologies For Energy Stations Using Unity3d, Gaoqi He, Kailin Yang, Jin Yi, Chen Qi, Haijie Li, Zhigeng Pan
Journal of System Simulation
Abstract: This paper presents one web-based interactive illustration system for energy stations using Unity3D as render engine. Interaction, scene rendering and data-driven visual analysis are the key technologies for this study. One low-coupling logical framework of virtual illustration is designed for five view layers using state pattern. From the viewpoint of event response and trigger on-demand, one concise human-computer-interaction interface is carried out. High-quality visualization of energy station is realized using Unity3D, which includes dynamic texture, water animation in water pipe, modeling and bake. Json database is used as transfer hub for external data access. Thus the dynamic …
Research On Motion Capture In Substation Virtual Environment,
2020
1. Datong Electric Power Senior Technical School, Datong 037049, China;;
Research On Motion Capture In Substation Virtual Environment, Yuping Huo, Xiu’E Zhang, Li Bing, Weiqing Li
Journal of System Simulation
Abstract: In the immersive transformer training simulator, using MEMS inertial motion capture system, the operator’s motion data was captured and analyzed. According to the typical operation in the substation virtual environment, the semantics of interaction were studied. SVM classification algorithm based on grid search and cross validation was used to recognize operator’s gestures. The identified gestures were used to actuate the virtual human’s action in the substation virtual environment. A priority classified character animation method with deformation weight control was proposed to render different priority level actions at the same time. Two modes of virtual operation performance, character animation sequences …
Research On Welding Process Modeling And Narrow Operating Area Searching For Shipbuilding Block,
2020
1. Jiangnan Shipyard (Group) Co., Ltd., Shanghai 201913, China;;
Research On Welding Process Modeling And Narrow Operating Area Searching For Shipbuilding Block, Zhaohui Wu, Yunfei Yang, Qianya Cai, Wenmin Zhu
Journal of System Simulation
Abstract: To solve the status that the welding operation is difficult because of the narrow segmented regions in shipbuilding block, the searching algorithm of narrow operating area combined with welding process simulation model was presented. Block model of ship, welding process model and welding resource model were completed to establish the block welding process simulation model. The collision and interference detection was used to check the space required by the welding operation rapidly, and then the potential narrow operating area based on the sequence planning of assembly process was achieved. The area can provide effective input for the man-machine engineering …
Modal Analysis Of Iced Conductor Galloping For Continuous Spans,
2020
1. Chongqing Jiaotong University, Chongqing 400074, China;;
Modal Analysis Of Iced Conductor Galloping For Continuous Spans, Xiaohui Liu, Lufei Zhang, Yan Bo, Xiaoyan Zhang
Journal of System Simulation
Abstract: The parameter analysis was presented for continuous spans vibration induced by single-span conductor galloping. The fine finite element model of continous spans and insulator strings was set up by ABAQUS softwart, the aerodynamic load was defined by UEL. So the dynamic response of continuous spans induced by single-span conductor galloping were numerically simulated in ABAQUS. The numerical simulation results show that the structure parameters have obvious effect on the vibration amplitude of the displacements and tention, low order modes have great influence on the vibration amplitede of the displacements, high order modes have great influence on the vibration amplitude …
Research On Herd Behavior Simulation Based On Scale Free Network In Artificial Stock Market,
2020
1. Department of Management Science, School of Statistics, Southwestern University of Finance & Economics, Chengdu 611130, China;;
Research On Herd Behavior Simulation Based On Scale Free Network In Artificial Stock Market, Wu Jiang, Zhang Hui, Chuan Tang
Journal of System Simulation
Abstract: To study the mechanism of herd behavior, an artificial stock market multi-agents model was established based on a scale free network investor relationship structure. Four kinds of investors were defined, which are fundamentalists, noise traders, speculators, and trend followers. Investors made a transaction according to their own specific investment strategy, and were meanwhile influenced from own neighbors, so the herd behavior came into being among these investors. The simulation results show that there is a positive relationship between the total herd behavior level of investors and the volatility of returns, and a significant difference between herding levels for four …
