• 제목/요약/키워드: mechatronics

검색결과 3,341건 처리시간 0.054초

Inverse Brightness Temperature Estimation for Microwave Scanning Radiometer

  • Park, Hyuk;Katkovnik, Vladimir;Kang, Gum-Sil;Kim, Sung-Hyun;Choi, Jun-Ho;Choi, Se-Hwan;Jiang, Jing-Shan;Kim, Yong-Hoon
    • 대한원격탐사학회지
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    • 제19권1호
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    • pp.53-59
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    • 2003
  • The passive microwave remote sensing has progressed considerably in recent years Important earth surface parameters are detected and monitored by airborne and space born radiometers. However the spatial resolution of real aperture measurements is constrained by the antenna aperture size available on orbiting platforms and on the ground. The inverse problem technique is researched in order to improve the spatial resolution of microwave scanning radiometer. We solve a two-dimensional (surface) temperature-imaging problem with a major intention to develop high-resolution methods. In this paper, the scenario for estimation of both radiometer point spread function (PSF) and target configuration is explained. The PSF of the radiometer is assumed to be unknown and estimated from the observations. The configuration and brightness temperature of targets are also estimated. To do this, we deal with the parametric modeling of observation scenario. The performance of developed algorithms is illustrated on two-dimensional experimental data obtained by the water vapor radiometer.

뉴로-퍼지 제어기를 이용한 도립역진자의 각도 및 위치제어 (Control of an angle and a position of inverted pendulum system using a neuro-fuzzy controller)

  • 이근형;정슬
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2008년도 심포지엄 논문집 정보 및 제어부문
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    • pp.151-152
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    • 2008
  • 본 논문에서는 도립 역진자 시스템에서의 진자의 도립 상태를 유지하도록 하기 위하여, DSP와 FPGA를 결합하여 ANFIS 뉴로퍼지 제어기를 구현하여 실험하였다. 도립진자의 위치 추종 성능을 PID 제어기와 비교 평가하였다.

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CPM형 자기부상 시스템의 설계 (A CPM-type Magnetic Levitation System Design)

  • 김종문;강도현;우병철;홍정표
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.155-157
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    • 2003
  • In this paper, CPM(controlled-permanent magnet)-type magnetic levitation system design is presented. The target plant to be controlled consists of eight magnets with permanent magnet and electromagnet. The design procedure is also described and the result of this work is shown.

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Involute 기어형식의 외접기어펌프 치형 설계 (Tooth Form Design of Involute Gear Type External Gear Pump)

  • 심보미;최민한;안진우;제우성
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2011년도 전력전자학술대회
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    • pp.539-540
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    • 2011
  • 본 논문에서는 건설기계 및 운반기계, 차량의 유압장치(브레이크, 클러치 및 파워 스티어링 시스템)로 널리 사용되어지고 있는 외접기어펌프의 치형을 Involute 기어형식으로 설계하였다. 상용프로그램인 Pumplinx 프로그램을 통해 이 기어를 해석하여 효율 및 성능을 알아보았다.

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Blind Deconvolution for Microwave Scanning Imaging Radiometer

  • Park, Hyuk;Kim, Sung-Hyun;Choi, Jun-Ho;Kim, Yong-Hoon
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.673-675
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    • 2003
  • The image restoration algorithm for microwave imaging radiometer is proposed. A blind deconvolution method was proposed. A point spread function was identified and three deconvolution schemes were employed, Wiener filtering, Lucy- Richardson deconvolution, and Maximum Likelihood blind deconvolution. The experimental data is illustrated with restored image.

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