• Title/Summary/Keyword: K-inf

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Design of a Discrete-Time $H_{\infty}$ Controller with Preview Action (예견 기능을 가진 이산시간 $H_{\infty}$ 제어기의 설계)

  • Choi, Jin-Tae;Kim, Jong-Shik
    • Journal of Institute of Control, Robotics and Systems
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    • v.3 no.2
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    • pp.115-123
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    • 1997
  • 이산기간 H/sub .inf./ 제어에 의한 최적 예견제어기를 제안한다. 기존의 H/sub .inf./ 제어기는 미지의 외란만 고려한 것이고, LQ 에 의한 예견제어기는 예견 가능한 외란과 미지의 외란이 동시에 가해지는 동적 시스템의 전달함수 행렬의 infinity 놈의 최소화하는 피드백제어기가 동시에 설계된다. 제어기의 설계는 full-information H/sub .inf./ 제어 이론을 따르나, 그 유도 과정은 LQ 에 기초한 예견제어기와 유사하게 이루어진다. 설계된 H/sub .inf./ 예견 게인 행렬은 LQ 예견 게인 행렬과 유사한 구조를 갖는다. 전달함수 행렬의 infinity 놈이 .inf.로 갈수록 H/sub .inf./ 예견 게인 행렬은 LQ에 의한 것에 접근한다. LQ 예견 게인 행렬은 H/sub .inf./ 예견 게인 행렬의 부분 집합임이 입증한다.

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A Study on Design and Development Input.Inventory Management Work Process in Smart Phone Environment (스마트폰 환경에서 입력.재고 업무 프로세스 설계 및 개발에 관한 연구)

  • Lee, Hyun-Chang;Seo, Shin-Lim;Wang, Ha-Yang;Shin, Sung-Yun
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2012.01a
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    • pp.171-172
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    • 2012
  • 기술의 발전에 따라 경제성장의 새로운 동력으로 정보기술이 각광받고 있으며, 기업에서도 정보화를 위한 투자를 늘려가고 있다. 대표적인 현상으로 스마트폰이라는 새로운 정보기술 매체이며, 이를 기반으로 정보화를 이룬 기업간 경쟁이 매우 치열해지는 양상을 보이고 있다. 그러나 일반 중소기업에서는 새로운 기술 트렌드에 부합하여 업무에 필요한 기술개발이 매우 어려운 실정이다. 특히, 데스크탑 환경의 특징인 인터넷을 기반으로 컴퓨터가 있는 곳에서의 업무 처리환경이 이동중인 환경에서 업무의 지속성이 매우 필요하게 된 것이다. 그러나 이와 같은 환경 제공은 대기업 및 일부 소프트웨어 개발 전문 업체에서 가능한 일이라 할 수 있다. 이에 본 연구에서는 의사결정자가 이동중에도 업무에 필요한 정보를 획득하여 의사결정을 수행할 수 있도록 스마트폰 환경하에서 업무에 필요한 기술을 개발하는데 목표가 있다. 업무 프로세스로서는 물품의 입력과 재고 관리를 중점으로 이루어지는 업무 프로세스 개발이다. 이를 통해 중소기업에서도 손쉽게 필요한 정보를 이동중에 활용할 수 있을 것으로 예측된다.

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Car Identification - Interval Size (차종 식별 - 간격 크기에 따른)

  • Kim, Do-Kwan;Shi, Seong-Yoon;Lee, Hyun-Chang;Rhee, Yang-Won;Park, Ki-Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.107-108
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    • 2016
  • Our study proposes the methods of distinguishing vehicle types using the interval and size of the car. The car videos converts the basic RGB model to Gray model for use and through Canny Edge Direction, it eliminates the background of the car while obtaining feature points through the detection of contours.

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Manual Therapy of Musculoskeletal Diseases(Shoulder-Horizontal Adduction and Abduction) (근골격계 질환의 치료(어깨-수평모음과 벌림))

  • Kim, Do-Gwan;Sin, Seong-Yun;Lee, Hyeon-Chang;Lee, Yang-Won;Park, Gi-Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.138-139
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    • 2016
  • This paper check over the shoulder disorder derived from musculoskeletal disorder. Particularly, it performing a manual measurement for horizontal adduction and horizontal abduction of shoulder. Here, if the value is lower than the reference value, It presents a reasonable manual therapies.

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Manual Therapy of Musculoskeletal Diseases(Shoulder-Flexion and Extension) (근골격계 질환의 치료(어깨-굽힘과 폄))

  • Kim, Do-Gwan;Sin, Seong-Yun;Lee, Hyeon-Chang;Lee, Yang-Won;Park, Gi-Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.118-119
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    • 2016
  • This paper proposes manual therapy with regards to shoulder diseases accompanied by pain when arms are lifted while spread straight. In the experiment, the angle of the arm when lifted straight is inserted for a manual diagnosis and in case of abnormality, the diagnosis and the therapy are proposed.

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Fuzzy relation equations in pseudo BL-algebras

  • Kim, Yong Chan
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.13 no.3
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    • pp.208-214
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    • 2013
  • Bandler and Kohout investigated the solvability of fuzzy relation equations with inf-implication compositions in complete lattices. Perfilieva and Noskova investigated the solvability of fuzzy relation equations with inf-implication compositions in BL-algebras. In this paper, we investigate various solutions of fuzzy relation equations with inf-implication compositions in pseudo BL-algebras.

A Study on the Enhancement of the International Regulatory Regime for Sea Transport of Radioactive Material through Improving the INF Code

  • Suk, Ji-Hoon
    • Journal of Navigation and Port Research
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    • v.36 no.7
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    • pp.577-583
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    • 2012
  • The transport of radioactive material by sea is strictly governed by the international regulatory regime which is established by both IAEA and IMO. Nonetheless, although the current regime is well established, due to catastrophic results of potential accident, it is essential to keep identifying areas where further enhancement is necessary. This paper reviews the current regulatory regime governing sea transport, such as IAEA Regulations, IMDG Code and INF Code. Then, specific requirements of the INF Code are analyzed for the purpose of identifying areas where improvement is necessary from the perspective of ships. Through this analysis, this paper identifies areas to be improved and proposes to improve the INF Code which can supplement the current regulatory regime for sea transport of radioactive material.

Lateral Flexion & Rotation of Cervical Spine (목뼈의 가쪽 굽힘과 돌림)

  • Kim, Kwang;Yun, Sueyoung;Shin, Seong-Yoon
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2017.07a
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    • pp.334-335
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    • 2017
  • 본 논문에서는 인체의 목뼈 부문의 관절과 근육의 움직임을 다루도록 한다. 특히, 목뼈의 가쪽 굽힘과 돌림에 대한 각도를 측정한다. 측정한 값이 정상수치를 벗어나거나 통증을 동반하면 이상이 있는 것으로 간주하여 치료법을 제시한다.

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Control of Active Suspension System Using $H_{inf}$ And Adaptive Robust Control ($H_{inf}$와 로버스트 적응 제어기를 이용한 능동 현가 시스템의 제어)

  • Bui, Trong Hieu;Nguyen, Tan Tien;Park, Soon-Sil;Kim, Sang-Bong
    • Proceedings of the KSME Conference
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    • 2001.06b
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    • pp.694-699
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    • 2001
  • This paper presents a control of active suspension system for quarter-car model with two-degree-of-freedom using $H_{inf}$ and nonlinear adaptive robust control method. Suspension dynamics is linear and treated by $H_{inf}$ method which guarantees the robustness of closed loop system under the presence of uncertainties and minimizes the effect of road disturbance to system. An Adaptive Robust Control (ARC) technique is used to design a force controller such that it is robust against actuator uncertainties. Simulation results are given for both frequency and time domains to verify the effectiveness of the designed controllers.

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The effect of HRT variation on acidogenic fermentation with municipal primary sludge (1차 하수슬러지의 유기산발효에 미치는 HRT의 영향)

  • Kim, Hyeong-Seok;Song, Young-Chae;Sung, Nak-Chang
    • Journal of the Korea Organic Resources Recycling Association
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    • v.10 no.3
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    • pp.68-73
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    • 2002
  • Acidogenic fermentation of primary sludge was investigated for the solution to reduce the sewage sludge and develope external carbon source for BNR process. In a viewpoint to use existing anaerobic digestion tanks, we didn't change environmental factors such as reactor configuration, temperature, pH and investigate the variation of solubilization rates, acidification rates and environmental factors which affected by the variation of HRT. The average solubilization rates were 0.0309 and $0.0204mgSCOD_{prod.}/mgICOD_{inf.}$ at a HRT of 3 and 1.5 days, respectively. The average acidification rates were 0.0068mg HAc/mg $TCOD_{inf.}$ and 0.0652mg HAc/mg $VSS_{destroyed}$ at a HRT of 3day. At a HRT of 1.5 days the average acidification rates were 0.0060mg HAc/mg $TCOD_{inf.}$ and 0.0346mg HAc/mg $VSS_{destroyed}$. For the period of experiments alkalinity and pH were properly maintained without artificial adjusting.

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