• 제목/요약/키워드: Door

검색결과 1,915건 처리시간 0.039초

전복시 차량 옆문의 구조해석 (Structural Analysis of Vehicle Side Door at Overturn)

  • 조재웅;한문식
    • 한국기계가공학회지
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    • 제9권6호
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    • pp.43-50
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    • 2010
  • This study aims to analyze the structural safety by comparing deformation and equivalent stress of door with a stiffener or no stiffener when the door crashes against something in case of overturn. Three types are classified on the basis of the no stiffener model in the vehicle door. One is the type which has a stiffener. Another is the type which has no stiffener and the other is the type which has a hole in the stiffener. These three types are compared with each other by analyzing. This side door of vehicle is the automotive part about the kind of vehicle as Mercedes Benz E-Klasse scaled down as 1/18 times as the real size. The study model of vehicle door is modelled by CATIA program and it is analyzed by ANSYS.

엘리베이터 도어 시스템을 위한 PMSM의 위치제어 알고리즘 (Position Control Algorithm of a PMSM for the Elevator Door System)

  • 송기영;조관열;김학원;오현철
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2012년도 추계학술대회 논문집
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    • pp.17-18
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    • 2012
  • Generally, speed control system is used to control the elevator door. The whole speed profile must be installed in the speed controller of the door control system. However, it is not easy to modify the speed profile when door opening size and time are changed. In this paper, the making speed profile is discussed by the door opening size and time. The position control algorithms of PMSM for elevator door system are compared with general speed control, position control method with speed controller, and position control with speed command feedforward compensation by simulation using MATLAB/SIMULINK.

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A New Landmark-Based Visual Servoing with Stereo Camera for Door Opening

  • Han, Myoung-Soo;Lee, Soon-Geul;Park, Sung-Kee;Kim, Munsang
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2002년도 ICCAS
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    • pp.100.2-100
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    • 2002
  • In this paper we propose a new visual servoing method for door opening with mobile manipulator. We use an eye-to-hand system that stereo camera is mounted on mobile platform, and adopt the position-based method. The previous methods for door opening mostly used eye-in-hand system with mono camera and required predefined knowledge such as radius and position about door grip, which was mainly caused by using mono cam era. This is also a severe constraint for pursuing general-purpose algorithm for door opening. For overcoming such drawback, we use stereo camera and suggest a new method that detect the door grip and estimate its pose from stereo depth information without predefined knowledge. Al...

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고장력강을 이용한 자동차 경량 도어 개발 프로세스 (The Process Development of Automotive Light-Weighting Door using High Strength Steel)

  • 장동환
    • 소성∙가공
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    • 제26권1호
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    • pp.55-62
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    • 2017
  • This paper proposes the process to develop a light-weighting automotive door assembly using high strength steel with low cost penalty. In recent years, the automotive industry is making an effort to reduce the vehicle weight. In this study, inner panels for automotive front door using thinner sheets and quenchable boron steel were designed to reduce the weight of conventional one. In order to evaluate the stiffness properties for the proposed door design, the several static tests were conducted using the finite element method. Based on the simulation results, geometry modifications of the inner panels were taken into account in terms of thickness changes and cost saving. Furthermore, a prototype based on the proposed design has been made, and then static stiffness test carried out. From the results, the proposed door is proved compatible and weight reduction of 11.8% was achieved. It could be a reference process for automotive industry to develop the similar products.

과도응답 해석에 의한 전자레인지 도어 프레임의 비틀림 변형 평가 (Evaluation of Twisting Deformation of the Door Frame of a Microwave Oven by Transient Response Analysis)

  • 구진영;이부윤
    • 대한기계학회논문집A
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    • 제29권9호
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    • pp.1282-1288
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    • 2005
  • This research has been motivated by the need to minimize possible leakage of microwave when one opens the door during operation of the microwave oven. An explicit finite element program is used to analyze the transient response the door of the oven under door-opening condition. Operation of the micro switch which plays an important role to hun off the power is simulated on the basis of the response of the latch. Using the results of the analysis, twisting deformation of the door frame is defined and evaluated.

DFSS를 이용한 Door Inside Handle 작동음 저감에 대한 고찰 (The Experimental Study to Improve Door Inside Handle Snap Back Sound By DFSS)

  • 황태진;황인선;이근수;김인동
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2011년도 춘계학술대회 논문집
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    • pp.357-360
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    • 2011
  • In these days, the passenger vehicles usually have equipped various comfort & security systems to appeal to customers. And then, the importance of emotional quality gives added weight to the noise performance of those system devices. Door inside handle system is one of the most popular devices for passenger. This paper shows developing process about the operating sound of door inside handle. We used DFSS process to develop the door inside handle snap back sound and confirmed the improvement.

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도어-차체 틈새 측정에 근거한 도어 장착 로보트의 위치 보정 알고리즘 개발 (Position Correction Algorithm of Door Mounting Robot based on Door-Chassis Gap Sleasure)

  • 김미경;강희준
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1994년도 추계학술대회 논문집
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    • pp.565-570
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    • 1994
  • This work deals with finding a suitable position correction algorithm of industrial robot based on measuring gaps between door and chassis. The algorithm calculates correction quantities and then must allow visually acceptable door-chassis assembly take. The algorithm simulation is performed for a simple door-chassis model, and its effectiveness is addressed in terms of the predefined total unformity, line uniformity. In addition, the error sensitivity analysis of the rotation center of door due to the mismatch of robot grasping is performed using the algorithm.

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[Invited Paper] Technology of Outdoor Readability Development in LCD Application

  • Choi, Hyun-Chul;Kang, In-Byung;Jung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.10-13
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    • 2009
  • We have developed variety of LCD technologies for the out-door display, which improve out-door readability as well as reliability from external impacts. This improvement was made possible by new approach on LCD cell optical design and modification of LCD surface, which allows surrounding light to be transmitted to enhance the visibility and at the same time filtering out light, which are considered to be source of noise in terms of visibility. This technology enables users to maintain high display performance in both in-door & out-door environments moreover alternatively choosing in-door/out-door.

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비접촉식 지문방지 도어락 시스템 구현 (The Implementation of Non-contact Door-lock System for Preventing Fingerprint)

  • 김현옥;문광수;김승규;김두용;김기완
    • 반도체디스플레이기술학회지
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    • 제13권4호
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    • pp.77-81
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    • 2014
  • There have been developed in authentication systems for information using biometric information approaches such as fingerprint, face, and iris. In general, a door-lock system is operated by touching keypads, which remains fingerprints on the keypads. Such door-lock systems do not protect personal information from others due to the exposure of fingerprints to keypads. In this paper, we propose the new door-lock system that does not leave fingerprints on the keypads. Without touching keypad the system works because the system accepts authentication information by using illuminance sensor and LED. The experiment shows that the implemented door-lock system works well under any circumstance.

자동차 도어랫치의 음질 지수 개발 및 단품 개선을 통한 음질 향상 연구 (A Study on Developing Sound Quality Index of Car Door Latch and Improving Sound Quality by Changing Door Latch Assembly Design)

  • 조현호;성원찬;김성현;박동철;강연준
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2013년도 추계학술대회 논문집
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    • pp.519-524
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    • 2013
  • The purpose of this study is that developing the index which evaluate sound quality of door latch and improving its sound quality through that results. For that, various operating sound of door latch was used for jury test. Loudness and sharpness related metrics are dominant in sound quality index we developed. This research investigate the main transfer path of its operating sound through sound field visualization and get conclusion that could reduce the impact sound of door latch. Therefore, we could verify sound quality improvement of modified product by using sound quality index.

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