Science Discovery

Volume 5, Issue 2, April 2017

  • The Reseach on Model Predictive Control for Linear Synchronous Motor of Maglev Train

    Li Yelei, Xu Hongze, Gegerile

    Issue: Volume 5, Issue 2, April 2017
    Pages: 77-85
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: The PID controller with an advantage of simple structure and easy extension is difficult to meet the requirements of the speed control system during the parameters variation and load disturbance. This paper presents a model predictive control(MPC) strategy for motor speed control based on analysis of the mathematical model of long stator linear syn... Show More
  • Research on a New Type of Composite Islanding Detection Method

    Wang Hao, An Yuan, Wang Songkai, Ding Hang

    Issue: Volume 5, Issue 2, April 2017
    Pages: 86-93
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: Distributed photovoltaic (PV) grid failure occurs, the short circuit fault current is small, and the power flow is bidirectional, the traditional power grid relay protection method is no longer applicable. In this article, through the study of traditional active frequency drift islanding detection method (AFD), analyses its advantages and disadvant... Show More
  • Research on the Overall Function Framework Scheme of the Intelligent Connected Vehicle

    Xu Chao

    Issue: Volume 5, Issue 2, April 2017
    Pages: 94-99
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: The Intelligent connected vehicle is car which is able to access the Internet, smart devices, other vehicles, and the road infrastructure. In the meantime, the intelligent connected vehicle can collect real-time data from multiple sources, and play a fundamental role in the future of the Internet of things. In the background of increasingly fierce ... Show More
  • Research on Video Saliency Detection Via Contrast and Self-Adaptive Transfer

    Wang Yongguang, Hao Aimin, Li Shuai

    Issue: Volume 5, Issue 2, April 2017
    Pages: 100-107
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: Although a lot of studies in salient motion detection have achieved great success in recent years, many challenges still exist toward the video saliency detection over the non-stationary videos and videos with slowly-moving objects, which supposes to exhibit significant influence on its corresponding subsequent applications. Thus, it urgently needs... Show More
  • Research on Keyframe Animation Generation Method of Elastic Body Based on Inverse Finite Element Optimization Analysis

    Hao Aimin, Lan Yu, Li Shuai, Yang Chen

    Issue: Volume 5, Issue 2, April 2017
    Pages: 108-117
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: This paper proposes a keyframe animation method of elasitc body based on inverse Finite Element Method (FEM) analysis, which constructs a multi-objective optimization process and makes a space-time optimization analysis on the keyframes in deformation space to reconstruct a user-specified deformation space of target model. By introducing signed dis... Show More
  • A Study of Time-varying Seismic Wavelet and Reflection Coefficient Separation Method Based on EMD and Smooth Filtering

    Lu Zi-hao, Dai Yong-shou, Gao Xu, Zhang Peng, Tan Yong-cheng, Zhang Hong-qian

    Issue: Volume 5, Issue 2, April 2017
    Pages: 118-128
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: The accuracy of seismic wavelet extraction influences the accuracy of analysis and dealing for seismic data directly. In fact, the wavelet in seismic data has the characteristics of time-varying. There are many methods for wavelet extraction, but the results using existing methods are not satisfying. This paper studies a new method for the separati... Show More
  • Research on Distributed Wireless Network Capacity and Its Seepage Transmission Method

    Bao Haining, Lu Jihua

    Issue: Volume 5, Issue 2, April 2017
    Pages: 129-134
    Received: Apr. 20, 2017
    Accepted:
    Published: Apr. 20, 2017
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    Abstract: Based on the background of green communication, the modeling and system capacity of distributed large-scale wireless networks have been deeply studied. We studied the robust rule of routing, capacity limit analysis, modeling of large-scale wireless network. and the system capacity. In detail, we focus on the modeling and connecting characteristics ... Show More
  • Research on Automatic Skinning of Articulated Characters Using Extended Position Based Dynamic

    Lijuan Chen, Junjun Pan

    Issue: Volume 5, Issue 2, April 2017
    Pages: 135-143
    Received: May 04, 2017
    Accepted:
    Published: May 04, 2017
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    Abstract: This paper proposes automatic skinning using extended position based dynamic in character animation, which adds energy conservation constraints based on the easy expandability of the position based dynamics. In the skeletal motion process, the deformation of surface mesh is divided into two stages. First stage: at each frame, the skeleton moves and... Show More
  • Comparative Study on Mode-Selection and Tuning Principle of Several Birefringent Filters

    Shan Dujuan

    Issue: Volume 5, Issue 2, April 2017
    Pages: 144-150
    Received: May 04, 2017
    Accepted:
    Published: May 04, 2017
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    Abstract: Bireftingent filters play an important role in many fields such as laser technology, etc. This paper describes the mode-selection and tuning principle of several sets of new birefringent filters. Including PBS-HWP combination, PBS-QW combination, PBS-LN crystal combination and PBS-QWPs combination. The advantages and disadvantages of these bireftin... Show More
  • Research and Realization of a Medium Power Wireless Power Transmission System

    Xiao Peng Li, Xue Qing Yuan, Kai Lin Xu

    Issue: Volume 5, Issue 2, April 2017
    Pages: 151-156
    Received: May 10, 2017
    Accepted:
    Published: May 11, 2017
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    Abstract: In order to solve the inconvenience of pluggable power transmission, this paper attempts to design a non-contact transmission energy system.In this paper, the system device is divided into transmitter and receiver, and the study designed a special mechanical structure to solve the problem of coil offset. The computer simulation and practical experi... Show More
  • Research on the Internet of Things Across the Road of the Stereo Garage Design

    Hou Lun Yuan, Yang Guangming

    Issue: Volume 5, Issue 2, April 2017
    Pages: 157-163
    Received: May 10, 2017
    Accepted:
    Published: May 11, 2017
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    Abstract: The purpose of this paper is to design a cross road networking intelligent stereo garage, can make full use of the space above the existing roads, improve space utilization, and equipped with a networking intelligent management system, through the intelligent car parked car stop system can realize the intelligent and automatic process, timely relea... Show More