• Title/Summary/Keyword: Line distortion

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A Design Method of Lossy Linear Tapered Transmission Line with quasi Non-distortion Characteristic in the Time Domain

  • Sekine, Toshikazu;Kobayashi, Kunikatsu
    • Proceedings of the IEEK Conference
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    • 2002.07c
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    • pp.2016-2018
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    • 2002
  • An exact solution of the lossy linear tapered transmission line is derived. As its application, a simple design method of the quasi non-distortion lossy linear tapered transmission line in the time domain is described. A design example is presented to show the validity and usefulness of the method.

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A study of the harmonics evaluation in the test track of Korea High Speed Rail (경부고속철도 시험선구 고조파 예측에 관한 연구)

  • 김길상;오광해;권삼영;이태형
    • Proceedings of the KSR Conference
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    • 1998.11a
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    • pp.241-248
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    • 1998
  • The purpose of this study is to evaluate the harmonics generated from Korea High Speed Rail's trainset and to analyze the effect on the KEPCO power system. This study focuses on the test track of the high speed rail and analyzes 154㎸ transmission line, scott transformer, autotransformer and 27,5㎸ line. The trainset is modeled as a harmonic source attached to the catenary line of the test track. Then, harmonic distortion is calculated. This distortion is compared with the KEPCO's regulations in relation to harmonic.

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A Study on the Signal Integrity and Distorted Signal Analysis of High Speed Transmission Line (고속 전송선로의 신호왜곡과 신호 보전에 관한 연구)

  • Jang, Yeon-Gil;Rhee, Young-Chul
    • The Journal of the Korea institute of electronic communication sciences
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    • v.7 no.2
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    • pp.213-219
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    • 2012
  • In this paper, we suggested the method of signal integrity for noises and distortion signal generated between high speed information transmission modules by external effects. Suggested method for signal integrity of impedance matching to remove transmission line distortion, We divided the impedance matching between the transmitter and the receiver module with the single line and differential line methods after confirmed the improvement of signal distortions through ADS simulation. the experimental results indicated that it is possible to keep signal integrity without signal distortions by matching the optimal termination impedance which are considering the signal delay of transmission line for using the high-performance modules.

Development of camera modeling and calibration technique with geometric distortion (기하학적 왜곡을 고려한 카메라 모델링 및 보정기법 개발)

  • 한성현;이만형;장영희
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.1836-1839
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    • 1997
  • This paper presents machine vision technique with a camera modeling that accounts for major sources of camera distortion, namely, radial, decentering, and thin prism distortion. Radial distortion causes an inward or outward displacement of a given image point from its ideal location. Actual optical systems are subject to various degrees of decentering, that is, the optical centers of lens elements are not strictly collinear. It is our purpose to develop the vision system for the pattern recognition and the automatic test of parts and to apply the line of manufacturing.

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A Study on Machine Vision System and Camera Modeling with Geometric Distortion

  • 왕한흥;한성현
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1997.04a
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    • pp.179-185
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    • 1997
  • This paper presents machine vision technique with a camera modeling that accounts for major sources of camera distortion, namely,radial, decentering, and thin prism distortion. Radial distortion causes an inward or outward displacement of a given image point from its ideal location. Actual optical systems are subject to varios degrees of decentering,that is,the optical centers of lens elements are not strictly collinear. Thin prism distortion arises form imperfection in lens design and manufacturing as well as camera assembly. It is our purpose to develop the vision system for the pattern recognition and the automatic test of and to apply the line of part manufacturing.

Distortion anaysis of digital filters for ECG signals (ECG 신호를 위한 디지탈 필터의 distortion 해석)

  • 남현도;안동준;이철희;장태규
    • 제어로봇시스템학회:학술대회논문집
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    • 1992.10a
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    • pp.817-822
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    • 1992
  • Distortion analysis of digital filters for the ECG signal processing is presented. Several band pass and band reject filters are designed for the analysis. Computer simulations are performed to compare the distortions of the Butterworth type filters and linear phase optimal fitters. The designed filters are applied to power line interference cancelling in ECG signals.

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A Study on the Control Technology for Global Distortion of the Deck in the Superstructure during Manufacturing Process (선루 제작시 데크의 전 변형 제어에 관한 연구)

  • Kim, Ha-Geun;Shin, Sang-Beom;Kim, Kyung-Gyu
    • Journal of Welding and Joining
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    • v.28 no.5
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    • pp.64-68
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    • 2010
  • The purpose of this study is to develop the control technology of global distortion in the deck of superstructures during manufacturing processes. The behavior of global distortion in the deck was evaluated by FEA and verified through comparing with the measured results by 3D measuring instrument. It was seen from the results that the principal factor inducing the global distortion is to be the bending moment associated with the longitudinal shrinkage force and transverse shrinkage caused by welding of stiffeners and flame heating to correct the excessive local out-of-plane distortion. Based on the results, the amount of reverse distortion in the thin deck plate was determined to control the global distortion in the deck plate. The proposed distortion control technology was verified by applying it to the actual structure.

An Analysis of the Distortions of High Speed Pulse Signal on the Microstrip Lines of the Single and Coupled Structures (단일 및 결합형 구조의 마이크로 스트립 전송선로에서 고속 펄스 신호의 왜곡 특성 분석)

  • 김기래
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.15 no.6
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    • pp.529-534
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    • 2002
  • Recently, As the higher frequency in clock of digital system being demanded and the density of circuits gets high for purpose of making light and minimizing system, the study for solution of digital signal distortion being interested. In this paper, the distortion of square pulse caused by dispersion as it propagates along a single microstrip line and crosstalk between lines on the Multi-Transmission Lines (MTL) is investigated. The dispersion and crosstalk of pulse signals is analyzed regarding to the structure of transmission line such as relative permittivity, substrate height, strip width of the microstrip line and pulse width of signal pulse.

Voltage Distortion Analysis and On-line Compensation of VSI for Permanent Magnet Synchronous Motor (영구자석 동기전동기용 전압원 인버터의 전압왜곡 분석 및 On-line 보상)

  • Kim H.W.;Youn M.J.;Cho K.Y.;Kim J.C.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.455-460
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    • 2003
  • The a PWM VSI, the voltage distortion exists between the reference and output voltage. This distortion is caused by the intended blanking time and the inherent characteristics of the switching devices which are function of the operating condition. In this paper, the dead-time effects are analysed and a new on-line estimation method for a PMSM is proposed to compensate time varying dead-time effects

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Analysis of the Wave Propagation Characteristic for Pulse Signal on Tapered Microstrip Line in Time Domain (테이퍼형 마이크로스트립 전송선로에서 펄스 신호의 시간 영역 전송특성 해석)

  • Kim Girae;Choi Young-Kvu
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.55 no.1
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    • pp.40-44
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    • 2006
  • In this paper, the distortion characteristics of an electrical pulse which has a rise/fall time due to the dispersion and the reflection, on nonuniform tapered microstrip lines has investigated in time domain. The transmission characteristics on uniform microstrip lines in time domain had represented already, but the results for the nonuniform tapered microstrip lines not represented yet. We investigated the transmission characteristics for pulse signal on the nonuniform tapered microstrip lines, and the result applied to design of wide band impedance matching circuit in design of MMIC. The voltage and current transfer functions are shown for the tapered line. The dispersion and distortion obtained by using these transfer functions are represented for the nonideal square pulse.