• 한국산업정보학회논문지
• /
• 제12권5호
• /
• pp.120-132
• /
• 2007

본 연구는 Openwave WAP Simulator를 이용하여 WML과 WMLScript의 구현 방법을 소개하고자 함에 그 목적이 있다. 이를 위해서 본 연구에서는 WAP시스템의 구조와 WAP 브라우저의 중류 및 WAP 콘텐츠 개발 방법에 대한 기존 연구들을 살펴본 후 Openwave Phone Simulator는 물론 Oponwave WAP Simulator, Openwave HTTP Simulator, Nokia Mobile Internet Toolkit을 이용하여 이를 구현하였다. 현재 WMLScript의 구현을 위한 제 설치과정과 복잡한 절차들에 대한 연구는 다소 희소한 편이라 본 연구에서는 이러한 제 과정을 순서대로 소개하여 WMLScript를 이용한 모바일 응용프로그램의 개발과 실험을 보다 쉽게 하고자 한다.

• 말소리와 음성과학
• /
• 제3권2호
• /
• pp.89-96
• /
• 2011

In this paper, details of the design and implementation of a voice source simulator using Simulink and Matlab are discussed. This simulator is an implementation by model-based design concept. Voice sources can be analyzed and manipulated through various factors by choosing options from GUI input and selecting pre-defined blocks or user created ones. This kind of simulation tool can simplify the procedure of analyzing speech signals for various purposes such as voice quality analysis, pathological voice analysis, and speech coding. Also, basic analysis functions are supported to compare the original signal and the manipulated ones.

• 한국시뮬레이션학회논문지
• /
• 제9권1호
• /
• pp.83-91
• /
• 2000

Vehicle simulators provide an effective and safe environment for training operators. Many vehicle simulators have been developed but only a few have reached the stage of widely available tools; these tools are usually expensive and run on workstations only We have developed a low-cost, PC-based excavator simulator for training operators. Currently the simulator is dedicated to operating the boom, Em, bucket, and driver's cabin for digging by the action of the operator on two joysticks. This paper presents the implementation of the excavator simulator and some implementation results.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2009년도 춘계학술대회 논문집
• /
• pp.424-432
• /
• 2009

This paper discusses about the implementation of a simulator for the Navigation Control System(NCS) of bimodal tram. To operate a NCS of bimodal tram, values of all sorts of sensors installed in bimodal tram should be transmitted to the NCS, and the NCS calculates the measured sensor values to determine traveling direction, traveling speed, current position etc. The implementation of the simulator consists of a device applying driver's input transaction function & virtual sensor program and a sub-rack device that controls communication with the NCS to evaluate navigation control function. The virtual sensor program can create routes (map), traveling profiles & seat information et cetera in order to transmit to the NCS, analyzes driver's input values and NCS output values to create virtual sensor values. The sub-rack device takes charge of communication with the NCS using CAN-OPEN, CAN-J1939, MVP protocols. This paper discusses about the implementation of the simulator and afterwards analyzes and evaluates the NCS simulation results.

• Journal of Power Electronics
• /
• 제16권2호
• /
• pp.553-563
• /
• 2016

This paper presents a digital hardware implementation of a real-time simulator for a multiphase drive using a field-programmable gate array (FPGA) device. The simulator was developed with a modular and hierarchical design using very high-speed integrated circuit hardware description language (VHDL). Hence, this simulator is flexible and portable. A state-space representation model suitable for FPGA implementations was proposed for a dual three-phase induction machine (DTPIM). The simulator also models a two-level 12-pulse insulated-gate bipolar transistor (IGBT)-based voltage-source converter (VSC), a pulse-width modulation scheme, and a measurement system. Real-time simulation outputs (stator currents and rotor speed) were validated under steady-state and transient conditions using as reference an experimental test bench based on a DTPIM with 15 kW-rated power. The accuracy of the proposed digital hardware implementation was evaluated according to the simulation and experimental results. Finally, statistical performance parameters were provided to analyze the efficiency of the proposed DTPIM hardware implementation method.

• ETRI Journal
• /
• 제27권2호
• /
• pp.140-152
• /
• 2005

In this paper, we present design features, implementation, and validation of a satellite simulator subsystem for the Korea Multi-Purpose Satellite-2 (KOMPSAT-2). The satellite simulator subsystem is implemented on a personal computer to minimize costs and trouble on embedding onboard flight software into the simulator. An object-oriented design methodology is employed to maximize software reusability. Also, instead of a high-cost commercial database, XML is used for the manipulation of spacecraft characteristics data, telecommand, telemetry, and simulation data. The KOMPSAT-2 satellite simulator subsystem is validated by various simulations for autonomous onboard launch and early orbit phase operations, anomaly operation, and science fine mode operation. It is also officially verified by successfully passing various tests such as the satellite simulator subsystem test, mission control element system integration test, interface test, site installation test, and acceptance test.

• 전력전자학회:학술대회논문집
• /
• 전력전자학회 2003년도 춘계전력전자학술대회 논문집(1)
• /
• pp.154-157
• /
• 2003

In this study, we design and implement the 20kVA TCSC(Thyrister Controlled Series Compensator) simulator It was tested on the KERI simulator The KERI simulator is a analog simulator for power system at the KERI power system division lab. It consist of many power system components, which are a 380V 5kVA generators, scale-downed transmission line modules, transformers, switches, FACTS(Flexible AC Transmission System) devices. In this paper, we present the design and implementation of 20kVA TCSC simulator and its basic test results.

• Journal of Power Electronics
• /
• 제7권4호
• /
• pp.336-342
• /
• 2007

This paper presents the development of a fuel cell dynamic simulator using a programmable DC power supply and LabVIEW graphical user interface. The developed simulator closely describes the static and dynamic characteristics of an actual proton exchange membrance fuel cell (PEMFC). The experimental results are provided to verify the operation of the simulator. The developed simulator can be used as a convenient and economic alternative to an actual fuel cell for developing and testing a fuel cell power conditioning system.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
• /
• pp.161-164
• /
• 2000

This paper presents an implementation of internet gateway system, named AX-2000 and call simulator. AX-2000 plays a important role in internet telephony technology and is composed of various board such as MPU, AVU. DVU, AMU. FXS, FXO, EM. Also AX-2000 supports G.729.a, G.723.1 for voice compression, G3 FAX Relay(T.38) and H.323. A capability of AX-2000 is 8 analog voice channel or 30 digital voice channel. For functional verification of AX-2000 voice interface, call simulator is designed. The call simulator makes actual call path between SUT(system under test) and reference AX-2000 system, then through call path examines functions of voice interface.

• 한국정밀공학회지
• /
• 제25권1호
• /
• pp.151-159
• /
• 2008

The parameter-based cardiovascular impedance simulator that is able to overcome the limits of conventional mock circulatory systems is critical for the development and test of biomedical devices including artificial heart. The concept of impedance simulator was validated mathematically in a previous study using high-gain feedback linearization control which, however, may cause serious difficulties and limits for practical implementation. In this study, therefore, practical applicability of the impedance simulator is investigated considering the physical limits such as motor speed and torque. Simple PID controller which do not require complex model of the simulator is used considering the practical implementation. Design guidelines of the impedance simulator are also provided based on the results.