A Continuous Non-Invasive Blood Pressure Prediction Method Based On Improved Svr Learning,
2020
1. College of Electrical Engineering, Nanjing institute of industry technology, Nanjing 210023, China; ;
A Continuous Non-Invasive Blood Pressure Prediction Method Based On Improved Svr Learning, Haixia Fan, Xiaohui Chen
Journal of System Simulation
Abstract: Aiming at the accuracy of continuous non-invasmive monitoring of blood pressure by photoelectric method based on the photoplethysmography (PPG) signal and the electrocardiography (ECG) signal, is influenced by the differences of human characteristics, a blood pressure prediction method based on principal component analysis (PCA) and genetic algorithm (GA) to optimize machine learning model is proposed. The method processes the PPG signal, ECG signal and human body features to form a feature matrix, and uses an improved SVR learning model to perform regression training on the feature matrix and the real-time blood pressure value measured by the mercury sphygmomanometer. …
Evaluation On Geo-Registration Accuracy Of Outdoor Augmented Reality,
2020
1. Institute of Geospatial Information, Information Engineering University, Zhengzhou 450001, China; ;2. 61618 Troops, Beijing 100094, China; ;
Evaluation On Geo-Registration Accuracy Of Outdoor Augmented Reality, Deng Chen, You Xiong, Meixia Zhi
Journal of System Simulation
Abstract: Geo-registration technology is a key technology for the combination of augmented reality and geographic information systems, and its registration accuracy has a significant impact on the availability of ARGIS. Aiming at this application, the basic concepts and principles of augmented reality geo-registration technology are analyzed, and the method for quantitative evaluation of geo-registration accuracy is proposed. Combined with the pre-acquired high-precision geographic information data, a variety of outdoor geo-registration experiments are carried out by using the different hardware devices, and the quantitative accuracy of different geo-registration methods is evaluated. The geo-registration errors and the problems existing in the practical …
Ship's Rudder/Fin Joint Anti-Rolling Mpc Control Based On Feedback Linearization,
2020
Marine Electrical Engineering College, Dalian Maritime University, Dalian 116026, China;
Ship's Rudder/Fin Joint Anti-Rolling Mpc Control Based On Feedback Linearization, Li Hui, Yingnan Xie, Liqi Lan
Journal of System Simulation
Abstract: Aiming at the nonlinearity, strong coupling and multivariate characteristics of the ship motion system, and considering the influence of marine environment on ship motion, a four-degree-of-freedom (surging, swaying, rolling and yawing) motion nonlinear mathematical model is established to comprehensively represent the essential characteristics of ship motion. Since the model predictive control is an applied multivariable optimal control strategy, the ship rudder/fin joint anti-rolling Model Predictive Control (MPC) system based on feedback linearization is designed. The simulations of ship rolling and course-keeping joint control are carried out under different sea conditions, and the results show that the control method is …
Eeg Classification Based On Multi-Domain Features And Random Subspace Ensemble,
2020
Key Laboratory of Data Engineering and Visual Computing, College of Computer Science and Technology Chongqing University of Posts and Telecommunications, Chongqing 400065, China;
Eeg Classification Based On Multi-Domain Features And Random Subspace Ensemble, Deng Xin, Can Long, Jianxun Mi, Boxian Zhang, Kaiwei Sun, Wang Jin
Journal of System Simulation
Abstract: Aiming at the preprocessing feature extraction and classification recognition in BCI system, a method for EEG classification of motion imagery based on random subspaces ensemble learning of multi-domain features is proposed. Based on the analysis on the ERD/ERS characteristics of motion imagery (MI) signals, the multi-domain features of best effective time and frequency bands are extracted as the feature vectors, and the scale of the random subspace ensemble with cross-validation is adaptively chosen, and the EEG classification is realized by using linear discriminant analysis (LDA) classifiers ensemble. The test results show that the accuracy of the multi-domain features and …
Simulation On Vehicles Mandatory Lane Changing And Merging Process In Case Of Road Bottleneck,
2020
1. China Research Center for Emergency Management, Wuhan University of Technology, Wuhan 430070, China; ;2. School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China;
Simulation On Vehicles Mandatory Lane Changing And Merging Process In Case Of Road Bottleneck, Lü Wei, Feizhou Huo
Journal of System Simulation
Abstract: A microscopic dynamic traffic flow model based on vehicle's mandatory lane changing behavior is established. Under the condition of road bottleneck, three macroscopic traffic flow characteristics of traffic flow, lane speed distribution and space-time diagram, and two microscopic traffic flow characteristics of merging distance and vehicle's travel time are analyzed. The simulation results show that, the total flow of arbitrary cross section of the bottleneck road can represent the overall traffic capacity, and the road bottleneck can reduce the total traffic flow by 10% to 35%, and cause a delay of 17% to 42% to the vehicle travel time …
Design And Simulation On Autonomous Landing Of A Quad Tilt Rotor,
2020
1. School of Navigation, Wuhan University of Technology, Wuhan 430063, China; ;2. Intelligent Transportation Systems Research Center, Wuhan 430063, China; ;3. National Engineering Research Center for Water Transport Safety, Wuhan 430063, China; ;
Design And Simulation On Autonomous Landing Of A Quad Tilt Rotor, Supu Xiu, Yuanqiao Wen, Changshi Xiao, Haiwen Yuan, Wenqiang Zhan
Journal of System Simulation
Abstract: Aiming at the under-actuation of general quadrotors, a novel quad tilt rotor model is proposed. The model decouples the y-direction translation and roll rotation of a quadrotor by the four servos used respectively for the tilting control of the four propellers to realized the tilt hover and tilt flight of the UAV, the UAV can keep a tilt attitude which increases the maneuverability and the precise pose position and attitude control of the tilt UAV and ensures a good performance on the trajectory tracking and landing. A 5-degree polynomial optimization is used in UAV trajectory planning for the strong …
Numerical Research On Ballistic Limit Of Whipple Shield In High-Velocity Range,
2020
Beijing Institute of Mechanical Equipment, Beijing 100854, China;
Numerical Research On Ballistic Limit Of Whipple Shield In High-Velocity Range, Yixiao Li, Shengjie Wang
Journal of System Simulation
Abstract: Limited by the acceleration ability of two-stage light gas guns, few hypervelocity impact experiment of Whipple shield with projectile speed higher than 8 km/s has been performed. The ballistic limit equations can't fully describe the protection ability of Whipple shield in high-velocity range because of the lack of experimental data. GRAY three-phase equation of state is used in the material point method calculation program to simulate the penetration of thick target plate and the high-velocity impact of Whipple shield. The numerical result of Whipple shield ballistic limit shows that the ballistic limit in high-velocity range is higher than the …
Research On A Novel Biogeography-Based Optimization Algorithm Based On Ga,
2020
School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China;
Research On A Novel Biogeography-Based Optimization Algorithm Based On Ga, Wang Ning, Lisheng Wei
Journal of System Simulation
Abstract: In order to further improve the optimization ability of biogeography-based optimization algorithm, a new genetic algorithm is proposed. The selection operation is added before the migration operation, and the migration individual is selected by the method of "roulette", so that the individuals with higher fitness can be preferentially migrated. The mutation operation combines the genetic gaussian mutation method, and the optimization performance of the algorithm is improved. The convergence condition of the method is derived in theory. Five test functions are used in the experiments, and the results prove that the ameliorated algorithm is better at the results of …
Bacterial Foraging Algorithm With Gravitational Mechanism,
2020
College of Electron and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
Bacterial Foraging Algorithm With Gravitational Mechanism, Yitao He, Li Jun, Liyan Hao
Journal of System Simulation
Abstract: Aiming at the weak quorum sensing ability and slow convergence in bacterial foraging algorithm, an algorithm with gravitational mechanism is proposed. The algorithm provides an optimization direction for each bacterium by introducing a gravitational mechanism in the gravitational search algorithm. The original swimming operation of bacterial foraging algorithm is used to realize the local optimization strategy, and the local dimension update is added after the swimming to widen the bacterial search scope in chemotaxis operation. In the migration operation of the bacterial foraging algorithm, the bimodal Gaussian function is introduced to re-initialize the position of the bacteria to avoid …
Interactive Assembly Simulation Platform For Complex Gearbox In Virtual Environmen,
2020
College of Engineering, South China Agricultural University, Guangzhou 510642, China;
Interactive Assembly Simulation Platform For Complex Gearbox In Virtual Environmen, Chunyang Jia, Xiangjun Zou, Jinhui Li, Zeqin Zeng, Wang Jie
Journal of System Simulation
Abstract: Aiming at the human-computer interaction, behavior simulation and user design in virtual assembly, based on the complex gearbox of large tractors, the simulation method of dynamic motion and behavior of gear with multi-collision body is studied. The positioning method of multi-part model based on axis constraints and surface constraints in virtual environment is proposed. The virtual environment of human-computer interaction is developed. The consumed time of per frame is about 10 ms, and the complex variable-speed motion behavior and its simulation are realized. The virtual assembly system is equipped with AR interface, which can realize the active intelligent virtual …
Vertical Flight Simulation Performance Analysis Based On Power Function Control Command,
2020
1. Xi'an Flight Automatic Control Research Institute, Xi'an 710072, China; ;
Vertical Flight Simulation Performance Analysis Based On Power Function Control Command, Zhongjun Qu, Zeyu Kang, Yongmei Cheng
Journal of System Simulation
Abstract: Based on the fly height control method of modal direct switching, after the input of the control command, the control output may be oscillated or even diverged. The power function conforms to the variation law of the flight altitude command, and is used as the prototype function to derive the relationship between the given height, the current height and the vertical velocity. Using this transformation relationship as the input command of the vertical velocity control loop, a smooth control system is designed. The system does not require control modal switching and can achieve the flight altitude maintenance andflight altitude …
Dynamic Vehicle Distribution Path Optimization Based On Improved Intelligent Water Drop Algorithm,
2020
1. Department of electrical and Information Engineering, Hunan Institute of Traffic Engineering, Hengyang 421009, China; ;
Dynamic Vehicle Distribution Path Optimization Based On Improved Intelligent Water Drop Algorithm, Shuangnan Fan, Jiming Chen, Weimin Gao, Zengfeng Wang
Journal of System Simulation
Abstract: In view of the unreasonable distribution path, low distribution efficiency and demand uncertainty in the current vehicle distribution process, a dynamic vehicle distribution path optimization method based on the improved intelligent drop algorithm is proposed. According to the customer's demand for delivery time, the soft time window penalty function and customer satisfaction function are constructed. Based on the characteristics of vehicle speed, damage cost, penalty cost and customer satisfaction of vehicle distribution, a vehicle path optimization model is established. The vehicle path optimization model is solved by the intelligent water droplet algorithm. The grey wolf optimization algorithm is used …
Optimal Control Research On Vehicle Magnetorheological Semi-Active Suspension Of Four Degrees Of Freedom,
2020
Zhejiang Industry & Trade Vocational College, Wenzhou 325003, China;
Optimal Control Research On Vehicle Magnetorheological Semi-Active Suspension Of Four Degrees Of Freedom, Yongshu Jia, Ahai Miu
Journal of System Simulation
Abstract: Based on system dynamics theory of vehicle, aiming at the model of 1/2 vehicle suspension, the vehicle magnetorheological semi-active suspension dynamic equation and space state equation with four degrees of freedom are established. A linear two times optimal controller and control algorithm for semi-active suspension are designed, and the control strategy based on magnetorheological damper of subdivision vibration velocity is proposed. Suspension simulation model is established to analyze the optimal control effect in SIMULINK. The results show that the magnetorheological semi-active suspension system based on the optimal control of the vehicle can reduce vehicle vertical vibration acceleration and vehicle …
Dynamic Environmental And Economic Dispatching Of Wind Farm Based On Multi-Objective,
2020
Department of Automation, North China Electric Power University, Baoding 071003, China;
Dynamic Environmental And Economic Dispatching Of Wind Farm Based On Multi-Objective, Le Wei, Xijin Li
Journal of System Simulation
Abstract: Wind farms are developing rapidly under the new policy on energy resources vigorously advocated by the state. Its output scheduling is very complex, and needs the integration of economic and environmental factors. Aiming at the large prediction error of wind power, in the dynamic environmental economic dispatch of wind farm, the cost of rotating reserve is taken into account within the generation cost, and the demand of wind power prediction error for rotating reserve capacity is taken into account within the constraint condition. Aiming at the minimum total cost of power generation, the minimum total pollutant emission and minimum …
Modified Fractional Order Sliding Mode Control For Speed Control Of Permanent Magnet Synchronous Motor,
2020
Universiti Malaya
Modified Fractional Order Sliding Mode Control For Speed Control Of Permanent Magnet Synchronous Motor, Fardila Mohd Zaihidee
Student Works (2020-2029)
In recent years, energy saving research activities have focused on electric motors and their systems since they are the main consumer of electricity in the industrial sector. Permanent magnet synchronous motor is known as a high-efficiency motor and slowly replacing induction motors in the industries. For speed control of PMSM, the sliding mode controller (SMC) has been widely used due to its robustness, high accuracy, and simplicity. The main disadvantage of the SMC method is the chattering phenomenon, which should be reduced or eliminated without compromising the controller’s robustness. Fractional order sliding mode speed control (FOSMC) of PMSM is proposed …
Resilient Design And Crisis Management,
2020
University of Arkansas, Fayetteville
Resilient Design And Crisis Management, Rich Ham
Operations Management Presentations
Explores the techniques to design resilience into systems, business functions, compliance, quality assurance and response to uncertainty. Includes an overview of Federal Emergency Management Agency principles in resilient design and crisis management, including implementation of National Incident Management System processes and industry standards to frame resilient design, procedures and planning documents. Learn to focus on the use of testing, exercises, and implementation of Plan, Do, Check, Act model to continually improve government, business and personal continuity through periods of cascading uncertainty.
Research Overview On Modeling And Solution Of Aerospace Tt&C Scheduling Problem,
2020
1. Department of Graduate Management, Equipment Academy, Beijing 101416, China;;
Research Overview On Modeling And Solution Of Aerospace Tt&C Scheduling Problem, Qingqing Yan, Huairong Shen, Qiongling Shao
Journal of System Simulation
Abstract: The research of Aerospace TT&C Scheduling (ATT&CS) is very important, because of its support for TT&C scheme decision-making and TT&C resource net constructing. The classification and resolution flow of the ATT&CS problem were introduced. Then, the modeling methods and related key techniques, such as designing of object function, analysis of constraints, and priority determining, were analyzed. The solving algorithms and conflict resolution methods were summed up, and the major categories of algorithm were evaluated. The main content of scheduling evaluation research was summarized. The possible future researches for related techniques were discussed based on the analysis of development and …
Overview Of Development And Current Progress In Maritime Simulation Research,
2020
1. Intelligent Transportation System Research Center, Wuhan University of Technology, Wuhan 430063, China;;2. National Engineering Research Center for Water Transport Safety, Wuhan 430063, China;;3. Engineering Research Center for Transportation Safety (Ministry of Education), Wuhan 430063, China;
Overview Of Development And Current Progress In Maritime Simulation Research, Xinping Yan, Wu Bing, Wang Yang, Xiaoyang Wei
Journal of System Simulation
Abstract: Maritime simulation plays an essential role in security of ship navigation, the innovation of the administration and the improvement of management ability. The traditional maritime simulation was surveyed, and the scope of maritime simulation was specified. Moreover, the research related to maritime simulation was overviewed under the proposed scope of maritime simulation. To gain a deeper insight into the research domain, maritime simulation was scrutinized in two dimensions. From the perspective of the simulation scale, modeling characters, and user requirements, maritime simulation was divided into macro, medium and micro scales; whereas in the viewpoint of comprehensive safety …
Principe Of Behavior Computing On Emotional Game,
2020
1. Institute of Behavior Computing of Xi’an Technological University, Xi’an 710032, China;;
Principe Of Behavior Computing On Emotional Game, Guofeng Zhang, Wang Niu, Xiong Hu
Journal of System Simulation
Abstract: Emotions is analyzed by mathematical statistics as an influence factor on behavior interaction in the current behavioral game researches. On the face of the status quo, premising emotion rationality that is the alternative to results rationality, a fresh emotional game computing principle was proposed by building emotion behavior schemata function. The suggested thought was applied to a modified ultimatum game computing, an emotional equilibrium outcome was obtained, and the psychological mechanism of the brave behavior was revealed. Meanwhile, the basic principle of pattern recognition to behavior selection mode was established. According to the constraint conditions of …
Simulation And Analysis Of Wind Turbine Echoes,
2020
Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China;
Simulation And Analysis Of Wind Turbine Echoes, Weikun He, Yuluo Shi, Xiaoliang Wang, Yuzhao Ma, Renbiao Wu
Journal of System Simulation
Abstract: Wind turbines can have serious effect on ATC radar, communication and navigation equipments. Thus electromagnetic scattering features of wind turbine and its echo simulation technology are of vital significance to wind farm clutter suppression and ensure air traffic safety. Based on the model of wind turbine scattering points superposition, the radar echo simulation of the wind turbine was studied. Meanwhile, the effect of azimuth angle and elevation angle of the incident wave on the echoes were considered and the model of radar echo signal for any observation points was established. In addition, the characteristics of time domain, …
