• Title/Summary/Keyword: dSPACE System

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Auto Setup Method of Best Expression Transfer Path at the Space of Facial Expressions (얼굴 표정공간에서 최적의 표정전이경로 자동 설정 방법)

  • Kim, Sung-Ho
    • The KIPS Transactions:PartA
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    • v.14A no.2
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    • pp.85-90
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    • 2007
  • This paper presents a facial animation and expression control method that enables the animator to select any facial frames from the facial expression space, whose expression transfer paths the system can setup automatically. Our system creates the facial expression space from approximately 2500 captured facial frames. To create the facial expression space, we get distance between pairs of feature points on the face and visualize the space of expressions in 2D space by using the Multidimensional scaling(MDS). To setup most suitable expression transfer paths, we classify the facial expression space into four field on the basis of any facial expression state. And the system determine the state of expression in the shortest distance from every field, then the system transfer from the state of any expression to the nearest state of expression among thats. To complete setup, our system continue transfer by find second, third, or fourth near state of expression until finish. If the animator selects any key frames from facial expression space, our system setup expression transfer paths automatically. We let animators use the system to create example animations or to control facial expression, and evaluate the system based on the results.

Research on the Design and Evaluation of a Control Loading System for Flight Simulator (비행 시뮬레이터용 조종력 재현 장치 설계 및 시험연구)

  • Lee, Chan-Seok;Kim, Byoung-Soo
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.32 no.4
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    • pp.95-100
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    • 2004
  • This paper represents the development of a CLS(Control Loading System) for a target a airplane (KT-1) with mechanical linkage reversible flight control system. The system is composed of mechanical frame, controller, sensing part to measure the force from the stick, driving system generating the reaction forces. The DS1103 DSP(Digital Signal Processor) of the dSpace Corp. was used as the controller. The control algorithm of the CLS and the operational environment including monitoring software and evaluation tools are described. The evaluation of the system was conducted according to the requirement specification. The results of the test were analyzed by comparing with the actual data of the target airplane.

Matlab/Simulink based Realtime Simulation of Induction Motor Drives (Matlab/Simulink기반 유도전동기 벡터제어 시스템의 실시간 시뮬레이션)

  • Lee HakJu;Kwon SeongChul;Yang SeungKwon;Oh SungUp;Seong SeJin
    • Proceedings of the KIPE Conference
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    • 2004.07a
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    • pp.19-22
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    • 2004
  • In this paper, we present a way that can implement the vector control Algorithm of induction motor and PWM signal generation on the basis of Matlab Simulink environment. The overall system model is designed by Simulink toolbox for vector control of induction motor, and then implement experiment with the DS1103 board of dSPACE. Although we are not coding the system, it is capable of doing simulation and experiment simultaneously. That is why Matlab and dSPACE board compiler can generate the '*.c' and '*.obj' files on the designed system automatically. After considering about hardware structure and driving system in Ds1103 board we verify the availability of Proposed method through in a comparison/analysis between simulation and experiment.

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Implementation of a Portable Identification System using Iris Recognition Techniques (홍채인식을 이용한 정보보안을 위한 휴대용 신분인식기 개발)

  • Joo, Sang-Hyun;Yang, Woo-Suk
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.5
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    • pp.107-112
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    • 2011
  • In this paper, we introduce the implementation of the security system using iris recognition. This system acquires images with infrared camera and extracts the 2D code from a infrared image which uses scale-space filtering and concavity. We examine the system by (i) extract 2D code and (ii) compare the code that stored on the server (iii) measure FAR and FRR using pattern matching. Experiment results show that the proposed method is very suitable.

Three Characteristic Beltrami System in Even Dimensions (I): p-Harmonic Equation

  • Gao, Hongya;Chu, Yuming;Sun, Lanxiang
    • Kyungpook Mathematical Journal
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    • v.47 no.3
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    • pp.311-322
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    • 2007
  • This paper deals with space Beltrami system with three characteristic matrices in even dimensions, which can be regarded as a generalization of space Beltrami system with one and two characteristic matrices. It is transformed into a nonhomogeneous $p$-harmonic equation $d^*A(x,df^I)=d^*B(x,Df)$ by using the technique of out differential forms and exterior algebra of matrices. In the process, we only use the uniformly elliptic condition with respect to the characteristic matrices. The Lipschitz type condition, the monotonicity condition and the homogeneous condition of the operator A and the controlled growth condition of the operator B are derived.

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Development of a Virtual Interface System of Robot Based on Internet (인터넷 기반의 로봇 가상 인터페이스 시스템 개발)

  • 임홍준;김경민;안현식
    • Proceedings of the Korea Institute of Convergence Signal Processing
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    • 2000.08a
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    • pp.145-148
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    • 2000
  • Nowadays there are lots of researches on robot systems working on danger environments and control led remotely. In this paper, we describe a virtual robot interface system based on Internet In the system, a client can order scanning for range finding, then server detects a 3D profile data from the objects by using robot controlling and a range finder automatically. If one clicks the original position of object and destination on virtual space, the robot moves the object to the new position in real space. The proposed interface system supports advanced virtual 3D interface and makes it possible one to manage the objects remotely more conveniently.

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Nudging of Vertical Profiles of Meteorological Parameters in One-Dimensional Atmospheric Model: A Step Towards Improvements in Numerical Simulations

  • Subrahamanyam, D. Bala;Rani, S. Indira;Ramachandran, Radhika;Kunhikrishnan, P. K.
    • Ocean Science Journal
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    • v.43 no.4
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    • pp.165-173
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    • 2008
  • In this article, we describe a simple yet effective method for insertion of observational datasets in a mesoscale atmospheric model used in one-dimensional configuration through Nudging. To demonstrate the effectiveness of this technique, vertical profiles of meteorological parameters obtained from GLASS Sonde launches from a tiny island of Kaashidhoo in the Republic of Maldives are injected in a mesoscale atmospheric model - Advanced Regional Prediction System (ARPS), and model simulated parameters are compared with the available observational datasets. Analysis of one-time nudging in the model simulations over Kaashidhoo show that incorporation of this technique reasonably improves the model simulations within a time domain of +6 to +12 Hrs, while its impact on +18 Hrs simulations and beyond becomes literally null.

Space-Time Carrier Interferometry Techniques with Low-density Parity Check Code for High-speed Multimedia Communications

  • Chung Yeon-Ho
    • Journal of Korea Multimedia Society
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    • v.9 no.6
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    • pp.728-734
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    • 2006
  • Carrier interferometry code is considered as a promising scheme that provides significant performance improvement via frequency diversity effect. Space-time coding is commonly employed to achieve a performance gain through space diversity. The combination of these techniques and forward error correction coding will lead to enhanced system capacity and performance. This paper presents a low-density parity check (LDPC) coded space-time orthogonal frequency division multiplexing (OFDM) transmission scheme with carrier interferometry code for high-capacity and high-performance mobile multimedia communications. Computer simulations demonstrate that the proposed mobile multimedia transmission system offers a considerable performance improvement of approximately 9dB in terms of Eb/No in the Rayleigh fading channel with relatively low delay spread, in comparison with space-time OFDM. Performance gains are further increased, comparing with traditional OFDM systems.

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VRML based Realtime RFID+4D Progress Management System Development (VRML기반 실시간 RFID+4D 진도관리 시스템 개발)

  • Park, Jae-Hyun;Yoon, Su-Won;Choi, Cheol-Ho;Chin, Sang-Yoon
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2010.05b
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    • pp.99-102
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    • 2010
  • Today's construction is higher and more complex. So types and amounts of needed materials for construction project are increasing and those are occurred problems in construction site such as insufficient working space, confusion of materials handling order and working circulation. Because of those problems, research of progress management system using RFID+4D has been studied, but it is impossible to manage progress and material statement in real-time. So this study analyzed problems of current research and suggested VRML based RFID+4D Progress Management System. This Study focused on system basic concept and interface is designed for system development. This research is still progressing, so it has to do more development and research. However, it could be expected construction management efficiency and automation of management tasks.

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A Simple If In-Phase Combiner and Its Performance for Point-to-Point Radio Relay System with Space Diversity

  • Suh Kyoung-Whoan
    • Journal of electromagnetic engineering and science
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    • v.5 no.1
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    • pp.1-7
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    • 2005
  • The implementation of a simple analog in-phase combiner is presented for a high capacity radio relay system with space diversity. It provides good performance in terms of simple hardware and easy control, and measured results are in good agreement with simulated ones. To suggest practical applications, signatures with/without diversity are measured for STM-1 signal of 64-QAM radio relay system combined with a 13-tap equalizer, and they provided more than 25 dB fade depth at 10$^{-3}$ BER under the frequency selective fading condition.