• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.108-109
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• 2019

Top-down construction is a useful method of utilizing the working space, economic benefits and shorten the construction period. Precision construction of the elevator core is very important for safety of the top-down structure. In this study, the layout system for the field-BIM(Building Information Modeling) was used to precisely construct the elevator core in the basement and the ground. Through the layout system, it was possible to process the construction status, review the design results and construction errors, and confirm whether there is or not within the construction error range for elevator installation.

• 융합보안논문지
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• 제23권2호
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• pp.67-74
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• 2023

승강기는 2만여 개의 다양한 부품들이 조합된 기계 전자적 장치로 서로 간의 밀접한 연관관계를 가지고 조직적으로 운영되고 있다. 이러한 복잡한 승강기 구조를 직관적으로 이해하고, 운영되는 모델을 효율적으로 인식함으로써 승강기 시스템에 대한 이해와 유지보수관리의 효율을 증가시킬 수 있을 것이다. 기존 승강기 관리 시스템은 승강기에서 발생하는 데이터를 기반으로 정보를 수집하고 이해하는 과정으로 승강기 유지 관리 시 실세계 정보의 표현 및 관리의 효율성이 부족한 구조를 가진다. 이에 본 논문에서는 승강기 실제 모델을 근간으로 효율적으로 운영할 수 있는 시뮬레이터 프레임워크을 제시하고자 한다. 구체적 사물에 대한 인식을 3D기반의 서비스 모델을 통해 구성하고, 동작 과정을 시각화함으로써 승강기 운영에 필요한 구조 및 운영방식에 대한 이해를 높일 수 있을 것이다. 이를 위해 승강기 시스템에 대한 핵심 구성요소를 파악하고 이들 간의 관계와 운영 방식을 시각화하고 시뮬레이터를 구현한다. 이를 바탕으로 가상공간과 현장의 효율적인 관리 구조를 통해 현실적인 정보관리 및 운영환경을 제공할 수 있을 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2009년도 제40회 하계학술대회
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• pp.973.1_974.1
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• 2009

One of the most important technical improvement required for ropeless elevator system to become practical is the improvements in overall system efficiency. Moreover, the predominant drawback of permanent magnet (PM) linear synchronous motor (LSM) is large detent force. Therefore, for the given volume the selection of high power density PM-LSM with low detent force is very imperative. In this paper, we will investigate the characteristics of thrust and detent force of PM-LSM under different motor topology structure. Finally, the long stator double-sided iron core type PM-LSM with fractional slot winding is the best choice for the ropeless elevator system.

• 한국항행학회논문지
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• 제17권6호
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• pp.785-791
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• 2013

최근 승강기 산업은 IT산업과 융합모델로 새로운 변화를 추구하고 있다. 융합의 핵심은 기계장치의 효율적인 제어와 유지보수에 달려있다. 그러나 현재 승강기 관리 모델은 각 승강기 제조사들이 자신의 승강기에 적합한 모델을 제공하여 관리를 하고 있으며 이러한 형태는 다양한 모델의 존재와 제조 회사 간의 이질적 구성으로 인해 보수 회사 입장에서 시스템별 별도의 관리와 운영이 이루어져야 하기 때문에 많은 오버헤드를 발생시킨다. 이에 본 논문에서는 다양한 승강기 모델의 통합 운영에 필요한 프레임워크를 제시하고자한다. 제시된 시스템은 임베디드 환경에서 빠르게 확대되고 있은 안드로이드 기술을 적용하고 다양한 장치들의 통합 운영을 위한 설계 방안을 제시함으로써 보다 효율적이고 안정된 서비스 환경을 제공한다. 이를 통해 기존의 다양한 승강기 모델을 빠르고 효과적으로 통합함으로써 승강기 시스템의 효율적인 관리와 유지보수를 수행할 수 있을 것이다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제18권3호
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• pp.41-49
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• 2012

Most large-sized and tall-risen general hospitals of today fairly depend on in-patient wards in designing hospital styles. The core planning for the efficient movements of various people in the words should take into account the sustainable connections between/among the floors, as well as hospital structures and mechanical functions. This study sampled for the study 19 hospital in-patient wards and investigated their flat-core styles. It was found out that hospital structures are changing from symmetrical styles of triangles, quadrangles and rectangles through bending, configuring, transforming to efficient new styles. Symmetrically quadrangled flat-styles are made of multi-cores spread with main an sub-cores. In contrast, symmetrically triangled flat-styles place the open place in the middle in order to prevent from its deepening, and widened the depth line through changing the outdoor top point. Non-symmetrical rectangles minimized the depth value to maintain the recent styles used in the wards, and tended to prefer the transformed styles of quadrangles. The double-corridors easily transshaped from mono corridors reveals the triangled, W-shaped, or Y-shaped figures. The site area ratio of the cores is 11.95% in average. The number of beds which one elevator covers is 66.51 beds in average, and the size of site area which one elevator covers 216.68m. Most cores on the base floor clustered around the average value, with more than 1000 beds shoes 12.83%, does 12.93%, does 14.64%, does 14.58%, which says that the core ratio increases according to hospital beds.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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• pp.359-365
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• 2008

As housing supply ratio has become over 100%, the strategic vision of government's policies has been changed from new construction to maintenance and regeneration of old architectural-structures. This fact has brought a light on the reconstruction and remodeling industries and a need for retrofit and rehabilitation techniques of existing foundation. Various methods of foundation for architectural-structures do exist. Among them, micropiling technologies are increasingly applied in foundation rehabilitation and seismic retrofitting projects. Micropiling techniques provide environmental-friendly methods for minimizing disturbance to adjacent structures, ground, and the environment. The installation is possible in restrictive area and general ground conditions. The fact that the installation procedures cause minimal vibration and noise and require very low ceiling height makes the micropiling methods to be commonly used for underpin existing structures. Specialized drilling equipment is often required to install the micropiles for existing basement facilities. This paper presents a case study in which micropiles were constructed to support a superstructure for vertical extension of existing elevator core and provide accessibility to underground parking lot. It is intended to become useful reference for the similar remodeling project.

• 한국CDE학회논문집
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• 제16권2호
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• pp.156-164
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• 2011

The automation technology is able to enhance the business process more rapidly and effective. Open BIM technology which supports automation technology of building overcomes the limitations of two dimensions drawings system. The purpose of this study is on the development of open BIM based modules for creating and verifying the core model for super-tall building in the schematic design phase. The module is expected to create cases of core models automatically and it is expected to verify the requirement of building model. This module is anticipated to utilize for creating the core model rapidly in order to create the alternative plan and to make the model accurate by its verification.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제5B권3호
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• pp.233-237
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• 2005

The reduction of the ripple of driving force is especially required for the practical utilization of linear synchronous motor for rope-less elevator. In this paper, the magnetic region of the linear motor is optimized by using topology optimization techniques (density method and ON/OFF method) in order to reduce the ripple of driving force. The optimal results of both methods are compared, and useful information for the optimal design of linear motor is obtained.

• 한국산업융합학회 논문집
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• 제22권6호
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• pp.711-719
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• 2019

At present, wind power is the fastest growing technology in the world. The domestic market depends heavily on imports for wind tower lift. so it manage through the overseas maker. The lift manufacture, establishment and maintenance utility is increasing, localization development of one wind tower lift is necessary with domestic fundamental base technique. In this paper, we will study the components necessary for the development of onshore offshore wind tower elevators, which are currently dependent on total imports, in line with the high growth of the wind market and the enlargement of the wind power generators. First of all, endless winders and cabins, which are the core components of the offshore wind tower lift, were examined for the components that affect the structural safety. Structural analysis was performed on Sheave, which is responsible for most of the lift lifting loads, and Block Stop, a safety device that prevents the cabin from falling in an emergency. The structural suitability was evaluated by comparing with the safety factor. In addition, the on-board control panel combines the control panel of the elevator and the drive motor driving the endless winder for efficient control of the offshore wind tower lift. The addition of features improves ride comfort at departure.

• 전력전자학회:학술대회논문집
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• 전력전자학회 1999년도 전력전자학술대회 논문집
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• pp.65-70
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• 1999

In this paper, the cost-effective design of output reactor which is used to suppress the over-voltage at the motor terminal in the Adjustable Speed Drives(ASD) application is proposed. In the elevator drive system, the power cable length is relatively shorter than other ASD applications and then the over-voltage at the motor terminal depends on the frequency characteristics of the output reactor at the over-voltage operating frequency. The over-voltage suppression mechanism of output reactor in ASD application is analyzed and the dominant parameters of output reactor for the over-voltage suppression are extracted. Using these parameters as the design values and considering the high frequency characteristics of iron core in the reactor, a new cost-effective structure of output reactor is proposed. Experimental results of the conventional reactor and the proposed reactor with a 15kW induction motor are given to verify the proposed scheme.