• 동력기계공학회지
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• 제17권5호
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• pp.128-137
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• 2013

Modern transmission technologies such as automated manual transmission(AMT) and dual clutch transmission(DCT) are interested to all manufactures due to their fuel efficiency and driver's convenience, especially in a hybrid system. AMT has advantages in that they have a high efficiency of manual transmissions(MT) and offer operation convenience similar to automatic transmissions(AT), but it has some disadvantages in that they have torque gap during gear shift and shift time. To reduce disadvantages, it is necessary to evaluate errors and characteristics as a developing simulation model before experimental verification. The purpose of this study is to develop virtual components and simulate the transient response of AMT. A dynamic AMT model and a control logic for an integrated vehicle model have been developed using Matlab/Simulink as a simulation platform. In this paper, the clutch model to describe the stick-slip transition mode and the transmission model to describe the neutral gear shifting is introduced and compared with each other.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2009년도 추계학술대회
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• pp.544-548
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• 2009

The underlying success of logistics depends on the flow of data and information for effective management. Over the last 30 years, we have seen the power of microprocessors double about every 18months. This continuing trend means that computers will become considerably smaller, cheaper, and more abundant; indeed, they are becoming ubiquitous and are even finding their way into everyday objects, resulting in the creation of smart things. In the long term, ubiquitous technologies will take on great economic significance. Industrial products will become smart because of their integrated information processing capacity, or take on an electronic identity that can be queried remotely, or be equipped with sensors for detecting their environment, enabling the development of innovative products and totally new services. The global marketplace runs on logistics, security, speed, agility and flexibility..In this paper we report that pairing these traditional logistics functions with RFID technology can be a huge value-driver for companies. This winning combination yields increased logistics management effectiveness and more efficient visibility into the supply chain management.

• 제어로봇시스템학회논문지
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• 제12권8호
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• pp.798-804
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• 2006

To overcome the limited relative uncertainty and work range of the existing planar stage and the bulk structure of the contact-less motor for rotation, the novel operating principle to realize the precise rotation is suggested. It uses the two-axial vector forces, normal force and thrust force, of three-induction type of axial motors located $120^{\circ}$ apart, resulting in the contact-free rotation of the mover. Firstly in this paper, the magnetic forces across the air gap are modeled and simulated under the various conditions. It clarifies the feasible range of the derived solution. And the algorithm compensating the strong cross couple between the forces and the control inputs; generally AC magnitude and slip frequency, is given to realize the independent control of six axes. Finally, for the successfully implemented system, the round test and the micro step test results are given.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 D
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• pp.2522-2524
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• 2000

In this paper, a controller design for ironless linear synchronous motor is proposed. The designed controller is mainly composed of speed and current control, which are carried out by the high-speed digital signal processor(DSP). In addition the PWM inverter is controlled by space voltage PWM method. This system is implemented using by 32-bit DSP(TMS32OC31), a high-integrated logic device(EPM940), and IPM(Intelligent Power Module) for compact and powerful system design. The experimental results show the effective performance of controller for careless linear synchronous motor.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(5)
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• pp.135-138
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• 2001

This paper presents micro step driving method using VHDL(Very high speed integrated circuit Hardware Description Language) which can configure CPLD(Complex Programmable Logic Device). Using VHDL which can do abstractive programming is similar to high level language. The whole block divided into five parts with freq. divide part, saw-tooth wave generation part, sine-cosine wave generation part, comparative part, out part. In the result of this study, peripheral circuits are to be simple and using LPM(Library of Parameterized Modules) is more easily to configure circuit. It is easy to verify and implement by using VHDL. To subdivide one natural step, we confirm that using micro step driver is expected that the rotor motion is stepless very smooth.

• 한국자동차공학회논문집
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• 제7권7호
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• pp.202-213
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• 1999

Adaptive Cruise Control (ACC) is one of key features on intelligent Transportation System(ITS). In ACC, the steering is done by a driver, but the engine throttle valve and the brake are controlled electronically. The relative velocity and distance from the preceeding vehicle are measured by radars or image processing units and relevant vehicular spacing is maintained in ACC control systems. In this study, vehicle longitudinal dynamics are modeled to simulate vehicle longitudinal maneuver and to design longtitudinal controllers for ACC vehicles. The control algorithm is designed based on the modeled vehicle longitudinal dynamics using a non-linear sliding mode control method. To verity the performance of the control algorithm, a real time numerical simulation program is developed on a Silicon Graphics workstation using C-language . A real time graphic program is alos develpe and integrated with the numerical simulation program.

• 산업공학
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• 제12권2호
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• pp.294-304
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• 1999

This paper describes the theoretical background and detailed structure of Navi-HEGS (Navigation system Human factors Evaluation and Guideline System) which has been developed for the human factors and HMI(Human-Machine Interface) researches for a CNS (Car Navigation System) and a digital map. Navi-HEGS is and integrated system that consists of a digital map UIMS(User Interface Management System), a CNS simulator, various evaluation tools, and a design guideline system. If Navi-HEGS is properly applied and utilized, it is possible to extract the substantial users requirements and preferences of a CNS and a digital map and then, these requirements can be simulated and evaluated with various human factors evaluation techniques. Applications of Navi-HEGS can improve the CNS usability, drivers safety and performance that directly affect the success of ITS(Intelligent Transport System). Also, results can be used as the basic data to establish the standards and design guidelines for the driver-centered CNS design.

• 한국컴퓨터정보학회논문지
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• 제23권12호
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• pp.145-151
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• 2018

While commercialization of IoT technologies in the safety management sector is being promoted in terms of industrial safety of large indoor businesses, implementing a system for risk management of small outdoor work sites with frequent site movements is not actively implemented. In this paper, we propose an efficient dynamic workload balancing strategy which combined low-power, wide-bandwidth (LPWA) communication and low-power Bluetooth (BLE) communication technologies to support customized risk management alarm systems for each individual (driver/operator/manager). This study was designed to enable long-term low-power collection and transmission of traffic information in outdoor environment, as well as to implement an integrated real-time safety management system that notifies a whole field worker who does not carry a separate smart device in advance. Performance assessments of the system, including risk alerts to drivers and workers via Bluetooth communication, the speed at which critical text messages are received, and the operation of warning/lighting lamps are all well suited to field application.

• 한국ITS학회 논문지
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• 제13권6호
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• pp.10-24
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• 2014

돌발상황에 대한 차내 경고 정보제공은 잠재적인 교통사고를 예방하고, 운전자의 적절한 회피행동을 유도하여 사고발생시 사고심각도를 감소시킬 수 있다. 그러나 부적절한 경고정보를 제공할 경우 운전자의 부적절한 판단을 유도하여 위험상황이 발생할 가능성을 높일 수 있다. 그러므로 운전자들이 경고정보를 가장 효과적으로 받아들일 수 있도록 정보 제공유무에 따라 실제 운전자의 반응특성을 분석하고 차내 경고정보 시스템을 다각도에서 평가할 수 있는 평가지표를 개발은 중요한 연구 주제이다. 본 연구에서는 다기준의사결정론을 적용하여 혼합가중치기반 운전자의 횡방향 및 종방향 주행안전성을 고려한 통합평가지표를 제시하였다. 가상주행실험을 통해 차내 경고정보 제공 전 후의 운전자 반응 특성 변수를 추출하여 운전자 반응특성 평가지표를 선정하였으며, 최적의 운전자 반응특성 평가지표를 선정하였다. 이때, 횡방향 및 종방향 주행안전성을 모두 고려하기 위하여 다기준의사결정방법론을 적용하여 종합적인 평가를 수행할 수 있도록 하였다. 본 연구에서 제시한 방법론은 다양한 유형의 경고정보제공시스템 도입시 운전자의 반응을 고려한 시스템 설계 및 도입에 따른 교통안전효과평가에 효과적으로 적용 가능할 것으로 판단된다.

• 만화애니메이션 연구
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• 통권17호
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• pp.117-132
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• 2009

이 논문은 유신체제 출범 직전인 1972년 제작, 개봉된 <모범운전사 갑순이>와 <쥐띠부인>의 여성 재현방식을 분석하였다. 두 영화는 각각 관습화된 오락영화의 약호를 이용하여 대중에게 소구함으로써 유신체제 이후의 본격적인 국책영화와 거리를 두고 있다. 그러나 실제 텍스트 내부를 보면, 지배 이데올로기를 내면화한 여성 주인공을 통해 급속한 근대화가 초래한 모순들을 봉합하고 있음을 알 수 있다. 이것은 국가가 주도하는 근대화 기획이 요구하는 이상적 여성을 스테레오 타입화함으로써 여성관객들로 하여금 국가동원체제에 순응하는 새로운 집단 정체성을 구성하도록 하기 위한 전략이라고 할 수 있다.