• 제목/요약/키워드: Interface generation

검색결과 921건 처리시간 0.022초

요소결합을 통한 파워트레인 시뮬레이션 소프트웨어 (II): 시스템 자동결합 모듈 개발 (Powerflow Simulation Software of the Automotive Powertrain through the Combination of the Components (II): Development of the Automatic System Generation Module)

  • 이승종;서정민
    • 한국정밀공학회지
    • /
    • 제21권2호
    • /
    • pp.52-59
    • /
    • 2004
  • In this paper, the automatic system generation algorithm based on the element combination algorithm discussed in the first part of this paper for designing an arbitrary type of the automatic transmissions is proposed. The powertrain design software using these algorithms is developed. This automotive powertrain design software with user-friendly graphic user interface has two main modules. The first module, the automatic power flow generation module, is already discussed in the previous paper. The second module dealing with the automatic system generation algorithm is discussed in this paper. The power-flow simulation software fur the arbitrary type of powertrain is then developed. The simulation and experimental results of the vehicle equipped with two planetary gear type automatic transmission are compared to validate the proposed algorithms and developed software. The simulation results demonstrate the good agreement with the experimental results.

Photovoltaic Generation System Simulation using Real Field Weather Conditions

  • 박민원;유인근
    • 전기전자학회논문지
    • /
    • 제5권2호
    • /
    • pp.121-127
    • /
    • 2001
  • Actual system apparatuses are necessary in order to verify the efficiency and stability of photovoltaic(PV) generation systems considering the size of solar panel, the sort of converter type, and the load conditions and so on. Moreover, it is hardly possible to compare a certain MPPT control scheme with others under the exactly same weather and load conditions as well. For the purpose of solving above mentioned difficulties in a laboratory basis, a transient simulation of PV generation system using real field weather conditions is indispensable. A straightforward simulation scheme with cost effective hardware structures under real weather conditions is proposed in this paper using EMTDC type of transient analysis simulators. Firstly, a solar cell has been modeled with VI characteristic equations, and then the real field data of weather conditions are interfaced to the EMTDC through Fortran program interface method. As a result, the stability and the efficiency analysis of PV generation systems according to various hardware structures and MPPT controls are easily possible under the exactly same weather conditions.

  • PDF

상호 대화형 격자생성 환경을 이용한 항공기 전기체 격자계 생성 (Grid Generation about Full Aircraft Configuration Using Interactive Grid Generator)

  • 김윤식;권장혁
    • 한국전산유체공학회:학술대회논문집
    • /
    • 한국전산유체공학회 1999년도 추계 학술대회논문집
    • /
    • pp.145-151
    • /
    • 1999
  • An Interactive grid generation program(KGRID) with graphical user interface(GUI) has been improved. KGRID works on the UNLX environment and GUI has been implemented with OSF/Motif and X Toolkit and the graphics language is Open GL for visualization of the 3D objects. It supports more convenient user environment to generate 2D and 3D multi-block structured grid systems. It provides various useful field grid generation methods, which are the algebraic methods, the elliptic partial differential equations method and the predictor-corrector method. It also supports 3D surface grid generation with NURBS(Non-Uniform Rational B-Spline) and various stretching functions to control grid points distribution on curves and surfaces. And some menus are added to perform flexible management, for the objects. We generated surface and field grid system about full aircraft configuration using KGRID. The performance and stability of the KGRID is verified through the generation of the grid system about a complex shape.

  • PDF

Motor Drive 설계를 위한 Spice 용 Interface Tool 제작 (The Development of the Interface Tool for the Designing of Motor Drive Using Spice)

  • 이상용;고재석;목형수;최규하;최홍순;김덕근
    • 전력전자학회:학술대회논문집
    • /
    • 전력전자학회 1998년도 연구회 합동 학술발표회 논문집
    • /
    • pp.68-72
    • /
    • 1998
  • The parameter through the motor designing program is used to predict motor response and design the motor drive circuits. The application programs such as "Saber" are often used for these. However, making the electrical model of motor for these simulation tool is uncomfortable and impossible for general users. Therefore, in this paper, we develop the "Spice" library generation program with the motor designing program "Motor Expert". This program will assist the user to make the motor library comfortablely and correctlyry comfortablely and correctly

  • PDF

Design of Interface Bridge in IP-based SOC

  • 정휘성;양훈모;이문기
    • 대한전자공학회:학술대회논문집
    • /
    • 대한전자공학회 2001년도 하계종합학술대회 논문집(2)
    • /
    • pp.349-352
    • /
    • 2001
  • As microprocessor and SOC (System On a Chip) performance moves into the GHz speed, the high-speed asynchronous design is becoming challenge due to the disadvantageous power and speed aspects in synchronous designs. The next generation on-chip systems will consist of multiple independently synchronous modules and asynchronous modules for higher performance, so the interface module for data transfer between multiple clocked IPs is designed with Xilinx FPGA and simulated with RISC microprocessor.

  • PDF

DMB 단말에서 TS Demux와 MPEG-4 시스템의 인터페이스 설계 및 구현 (Design and Implementation of the Interface between TS Demux and MPEG-4 System in DMB terminal)

  • 서주희;박주희;전종구
    • 대한전자공학회:학술대회논문집
    • /
    • 대한전자공학회 2003년도 컴퓨터소사이어티 추계학술대회논문집
    • /
    • pp.251-254
    • /
    • 2003
  • DMB is a next-generation multimedia broadcasting system that not only enables digital broadcasting services such as transmission of CD-duality audio, traffic information, and real-time stock information, but also allows reception of high-quality digital TV in high-speed driving conditions. In the DMB system, MPEG-2 TS(Transport Stream) multiplex method and MPEG-4 System SL(Sync Layer) have been selected as the delivery layer. In this paper, an efficient interface scheme between an MPEG-2 TS processing hardware and software-implemented MPEG-4 system within a DMB terminal device is proposed.

  • PDF

자바 애플릿을 이용한 2차원 혼합형 비정렬 격자 생성 프로그램의 개발 (DEVELOPMENT OF 2-D UNSTRUCTURED HYBRID GRID GENERATION PROGRAM USING JAVA APPLET)

  • 이장훈;조금원;김병수
    • 한국전산유체공학회:학술대회논문집
    • /
    • 한국전산유체공학회 2009년 추계학술대회논문집
    • /
    • pp.65-70
    • /
    • 2009
  • In this paper a hybrid grid generation program for general 2-D region is introduced. The program is developed by using JAVA programming language, and it can be used either as an application program on a local computer or as an applet in the network environment. The hybrid grid system for a 2-D problem means a combination of triangular cells and quadrilateral cells, and it can offer both of the high flexibility of triangular cells and the high accuracy and efficiency of structured-type quadrilateral cells. To accommodate a quadrilateral-cell region and a triangular-cell region into one computational domain, it is importance to take good care of the interface between two different regions so that overall good grid quality can be maintained. In this research advancing layer method(ALM) augmented by elliptic smoothing method is used for the quadrilateral-cell region and advancing front method(AFM) is used for the triangular-cell region. A special treatment technique for the interface between those two regions is also developed. The interface treatment technique is basically to prevent the propagation of small cell size due to ALM method into the triangular region and maintain the smooth transition of cell-size scale between two different regions. By applying current technique high-quality hybrid grids for general 2-D regions can be easily generated, and typical grid generation results and flow solutions are demonstrated.

  • PDF

A Subthreshold Slope and Low-frequency Noise Characteristics in Charge Trap Flash Memories with Gate-All-Around and Planar Structure

  • Lee, Myoung-Sun;Joe, Sung-Min;Yun, Jang-Gn;Shin, Hyung-Cheol;Park, Byung-Gook;Park, Sang-Sik;Lee, Jong-Ho
    • JSTS:Journal of Semiconductor Technology and Science
    • /
    • 제12권3호
    • /
    • pp.360-369
    • /
    • 2012
  • The causes of showing different subthreshold slopes (SS) in programmed and erased states for two different charge trap flash (CTF) memory devices, SONOS type flash memory with gate-all-around (GAA) structure and TANOS type NAND flash memory with planar structure were investigated. To analyze the difference in SSs, TCAD simulation and low-frequency noise (LFN) measurement were fulfilled. The device simulation was performed to compare SSs considering the gate electric field effect to the channel and to check the localized trapped charge distribution effect in nitride layer while the comparison of noise power spectrum was carried out to inspect the generation of interface traps ($N_{IT}$). When each cell in the measured two memory devices is erased, the normalized LFN power is increased by one order of magnitude, which is attributed to the generation of $N_{IT}$ originated by the movement of hydrogen species ($h^*$) from the interface. As a result, the SS is degraded for the GAA SONOS memory device when erased where the $N_{IT}$ generation is a prominent factor. However, the TANOS memory cell is relatively immune to the SS degradation effect induced by the generated $N_{IT}$.

사용자 인터페이스 명세 언어를 이용한 위피 비즈니스 프로그램 저작도구 구현 (Implement of The Authoring Tool for WIPI Business Program using UIDL(User Interface Description Language))

  • 이동수;박기창;김병기
    • 한국콘텐츠학회논문지
    • /
    • 제9권2호
    • /
    • pp.152-162
    • /
    • 2009
  • 현재 위피 응용프로그램을 개발하기 위한 저작도구는 코드 작성의 편의성이 부족하고, 시각화를 배제한 문법 중심의 프로그래밍 도구가 대부분이다. 이로 인해 위피 응용프로그램 개발 시 개발자가 전체 개발과정에 걸쳐서 직접 코딩하여 개발하고 있다. 본 논문에서는 위피 응용프로그램을 신속하고 용이하게 개발 할 수 있는 절차로써 위피API의 상위레벨(High level) 컴포넌트를 그래픽 컨트롤로 시각화하고, 이를 이용하여 시스템에서 제공한 모바일 레이아웃에 개발자가 쉽게 디자인한 후, UI 명세 언어와 소스 코드로 생성 해주는 과정을 거치는 개발 방안을 제시한다. 이를 위하여 위피 Jlet의 UI 명세 언어인 JIML(Jlet Interface Markup Language)을 제안하고, 제안한 JIML로부터 위피 Jlet의 UI와 관련된 위피 코드로의 생성을 위한 변환 규칙을 제시한다. 또한 위의 개발 과정을 자동으로 처리하는 시스템을 구현하였다. 구현한 시스템은 위피 비즈니스 프로그램 개발 시 효율성을 제공하고, 빠른 개발이 가능하도록 도와준다.

DC 및 AC 스트레스에서 Lateral DMOS 트랜지스터의 소자열화 (Hot-Carrier-Induced Degradation of Lateral DMOS Transistors under DC and AC Stress)

  • 이인경;윤세레나;유종근;박종태
    • 대한전자공학회논문지SD
    • /
    • 제44권2호
    • /
    • pp.13-18
    • /
    • 2007
  • 본 연구에서는 Lateral DMOS 소자열화 메카니즘이 게이트 산화층의 두께에 따라 다른 것을 측정을 통하여 알 수 있었다. 얇은 산화층 소자는 채널에 생성되는 계면상태와 drift 영역에 포획되는 홀에 의하여 소자가 열화 되고 두꺼운 산화층 소자에서는 채널 영역의 계면상태 생성에 의해서 소자가 열화 되는 것으로 알 수 있었다. 그리고 소자 시뮬레이션을 통하여 다른 열화 메카니즘을 입증할 수 있었다. DC 스트레스에서의 소자 열화와 AC 스트레스에서 소자열화의 비교로부터 AC스트레스에서 소자열화가 적게 되었으며 게이트 펄스의 주파수가 증가할수록 소자열화가 심함을 알 수 있었다. 그 결과로부터 RF LDMOS 에서는 소자열화가 소자설계 및 회로설계에 중요한 변수로 작용할 수 있음을 알 수 있었다.