• Title/Summary/Keyword: 로드 시뮬레이터

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Development of 3-axial Realization Algorithm of Road Profile for Multi-axial Road Simulator (다축 로드 시뮬레이터의 3축 재현 알고리즘 개발)

  • 류신호;정상화;김종태
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2002.10a
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    • pp.962-965
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    • 2002
  • Full scale durability test in the laboratory is an essential of any fatigue life evaluation of components or structures of the automotive vehicle. Component testing is particularly important in today's highly competitive industries where the design to reduce weight and production costs must be balanced with the necessity to avoid expensive service failure. Generally, Hydraulic road simulator is used to carry out the fatigue test and the vibration test. In this paper, the algorithm and software to realize the real road profile are developed. The operation software for simultaneously controlled multi-axial simulator is developed and the input and output data are displayed window based PC controller in real time. The software to generate the real road profile are developed. This paper developed a road profile reappearance software and simultaneously apply 3-axial actuator to white noise, so we verified the propriety of reappearance software through accomplishes an real test.

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Structural and Dynamic Analysis of Three-Axis Road Simulator (3축 로드 시뮬레이터의 구조 및 동적 해석)

  • 황성호;김화진;박창수;최경락
    • Transactions of the Korean Society of Automotive Engineers
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    • v.11 no.5
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    • pp.105-111
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    • 2003
  • The three-axis road simulator is the test equipment which can simulate the standardized road conditions for the durability evaluation of automotive components such as suspensions. The road load data are collected and acquired from a vehicle test, and then these data are used to simulate road load conditions by the road simulator which consists of hydraulic actuators, link mechanism and servo controller. The link mechanism must be designed in consideration of the dynamic effect and interference during three axes motions in order to generate accurate motions. In this paper, the structural and kinematic analysis of the link mechanism is performed, and these results can be used for developing the three-axis road simulator. The three-axis road simulator provides considerable savings in cost, development time, and testing risk during developing automotive components.

A Study on the Dynamic Characteristics and Finite element analysis of 3-axis road simulator link unit (3축 로드 시뮬레이터의 링크부의 동특성 및 FEM 해석에 관한 연구)

  • 박용래;정상화;류신호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.10a
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    • pp.694-697
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    • 1997
  • As the life cycle of the vehicle become shorter, the method that reduce the development time of new model become more important. In this reason, the development of the simulator that provides similar environment with the actual vehicle load characteristics is increasing. In this paper, the link unit of the 3-axis road simulator is designed and simulated with dynamic analysis software ADMS. and the maximum stress and strain are analyzed for the safety of link and specifications of optimal design using finite element method.

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A Mechanism Design of the 3-axial Road Simulator Linkage (3축 로드 시뮬레이터 링크부의 메카니즘 설계)

  • 정상화;류신호;김종태;이규태;장완식
    • Transactions of the Korean Society of Automotive Engineers
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    • v.11 no.2
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    • pp.140-147
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    • 2003
  • Full scale durability test in the laboratory is an essential of any fatigue life evaluation of components or structures of the automotive vehicle. Component testing is particularly important in today's highly competitive industries where the design to reduce weight and production costs must be balanced with the necessity to avoid expensive service failure. Generally, hydraulic road simulator is used to carry out the fatigue test and the vibration test. In this paper, the link unit which is able to realize the 3 element forces such as vertical force, lateral force, and longitudinal force that are applied to the road simulator is designed. Also, the designed link is verified with kinematics and inverse-kinematics. From this results, the designed factor satisfied the maximum stroke so that it satisfied the requirements for 3-axial road simulator.

웹기반 3D 가시화 모듈 연구

  • Park, Ji-Su;O, Jae-Yong
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2016.05a
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    • pp.32-34
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    • 2016
  • 웹기반 3D 가시화 모듈은 선박운항 시뮬레이터 시스템을 플랫폼 종류에 제약을 받지 않고 다양한 시스템의 요구사항을 효과적으로 반영하여 웹브라우저에서 3D 가시화 시뮬레이션을 지원하는 시스템이다. 본 연구에서는 시뮬레이션 데이터를 Socket.io 이용하여 실시간으로 업데이트를 하였으며 시각 및 기상상태, 해상 환경을 재현하였다. 또한 3D 가시화 인터페이스를 이용하여 대상 선박과 항만의 3차원 모델 데이터를 로드하고, 시뮬레이션 데이터와 연동하여 실시간으로 3차원 가시화 화면을 생성하는 연구를 진행하였다. 개발된 기술은 장비 선택에 제약이 없어 시간, 인력, 공간, 예산에 유연한 시스템 활용이 가능할 것으로 기대된다.

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HSIM: Implementation of the Highly Efficient Logic SIMulator (고성능 로직 시뮬레이터(HSIM) 구현)

  • Park, Jang-Hyeon;Lee, Gi-Jun;Kim, Bo-Gwan
    • The Transactions of the Korea Information Processing Society
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    • v.2 no.4
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    • pp.603-610
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    • 1995
  • In this paper, we present a highly efficient simulation package which supports simulation from functional level to gate level. The package consists of a set of front-end tools, a logic simulator, named HSIM(Highly efficient logic SIMulator), and an waveform analyzer. The front-end tools include a netlist compiler, functional primitive compiler and behavioral compiler. Key feature of developed simulator is that the compiled behavioral models written in C language are directly executed in the simulation engine using incremental loader. By doing so, we achieved significant speed up as compared with the interpretive functional simulator. Experimental results show that HSIM runs about 55% faster than traditional unit-delay event-driven interpretive simulator.

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Generation of Displacement Signal for Realizing Road Profile using the Accelerometer (가속도계를 이용한 노면형상재현 변위신호 생성)

  • Kim, Jong-Tye;Kim, Cheol-Woo;Kim, Taek-Hyun
    • Journal of the Korean Society of Propulsion Engineers
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    • v.14 no.2
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    • pp.39-45
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    • 2010
  • In the recent years, it is important to evaluate the durability and the reliability of the vehicle, aircraft, and structure. Especially, in case of the vehicle, the durability and reliability are tested by driving test after making prototype vehicles. However, these methods require many costs and efforts for the experiment are needed to react the defects of product. This problems can be settled by simulator which supplies the realistic environments. In this parer, four-axial road simulator with hydraulic power and driving program to operate are made up. The displacement road profile is realized by accelerometers. For the verification the real-vehicle experiment is executed and road profile obtained from the experiment is verified by four-axial road simulator.

Design of Force Control System for a Hydraulic Road Simulator using QFT (QFT 를 이용한 유압 로드 시뮬레이터에 관한 힘 제어계 설계)

  • Kim, Jin-Wan;Xuan, Dong-Ji;Nan, Yang-Hai;Kim, Young-Bae
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.1109-1114
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    • 2007
  • This paper presents the road simulator control technology for reproducing the road input signal to implement the real road data. The simulator consists of the hydraulic pump, servo valve, hydraulic actuator and its control equipment. The QFT is utilized to control the simulator effectively. The control system illustrates a tracking performance of the closed-loop controller with low order transfer function G(s) and pre-filter F(s) for a parametric uncertain model. A force controller is designed to communicate the control signal between simulator and digital controller. The efficacy of the QFT force controller is verified through the numerical simulation, in which combined dynamics and actuation of the hydraulic servo system are tested. The simulation results show that the proposed control technique works well under uncertain hydraulic plant system. The conventional software (Labview) is used to make up for the real controller in the real-time basis, and the experimental works show that the proposed algorithm works well for a single road simulator.

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