High-Frequency Zero Current Soft Switching Inverter with Pulse Density Modulation for Induction Heated Roller

강신출,문상필 한국조명.전기설비학회 2008 조명·전기설비학회논문지 Vol.22 No.7

This paper presents a voltage source type half-bridge series resonant high frequency (HF) inverter for induction heated fixing roller in copy machines. This high-frequency inverter works under zero current soft switching (ZCS) commutation and has wide power regulation range due to employing a pulse density modulation (PDM) scheme. Transient and steady state operating modes of the inverter are presented in this paper together with its PDM-based power regulation system. Experimental operating performances of the developed HF-ZCS inverter as well as power losses and actual efficiency are discussed and compared with computer simulation results.

성능이 개선된 규칙기반 자기학습 제어기에 의한 직류서어보 모터의 속도제어에 대한 연구 ( A Study on the Speed Control of DC-Servo Motor by Rule-Based SOC with Improvement Performance )

강신출,임영도 대한전자공학회 1993 대한전자공학회 학술대회 Vol.1993 No.1

Stabilization Control in Human Robot Interaction

Kang, Shin Chul,Tack, Han Ho 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

This paper presents a hierarchical path planning and control strategy for ensuring safety during a human-robot interaction. At the planning stage, a two-step process is used where first the danger of the interaction of minimized, followed by a goal seeking optimization. This approach reduces the likelihood of encountering local minima due to conflicts between reducing danger and a demanded interaction task. At the control stage, the human intent signal is evaluated at every step to ensure safe operation of the robot. In initial simulation work, the controller drives the robot away from the planned interaction if danger is identified, and then allows the planned interaction to resume once the danger has passed.

무인자동차 궤적 추적 제어 시스템에 관한 연구

한아군,강신출,김관형,탁한호,Han, Ya-Jun,Kang, Chin-Chul,Kim, Gwan-Hyung,Tac, Han-Ho 한국정보통신학회 2017 한국정보통신학회논문지 Vol.21 No.10

본 논문에서는 시간에 따라 방향 속도와 위치가 변하는 무인자동차의 궤적 추적 제어시스템에 대해 논한다. 무인자동차는 운전자의 도움이 없어도 스스로 주위환경을 인식하여 지정된 도로를 주행할 수 있는 자동차로 올바른 주행을 위해 고려해야 할 변수가 다양하다. 무인자동차의 궤적 추적 시스템에서 인식한 정보는 이산적인 값을 가지므로 센스 간의 간격으로 인하여 비연속성 및 비선형성을 가지고 있다. 이로 인하여 목표 궤적을 정확하게 추적하는 것 어렵다. 본 논문은 차량의 운동학 모델링을 통하여 선형오차, 제약 조건, 제어 목표함수의 세 가지 조건을 갖는 무인자동차 궤적 추적시스템을 제안한다. 제안된 궤적 추적시스템을 기반으로 동적 시뮬레이션 소프트웨어-카심(Dynamic Simulation Software-CarSim)의 결합시뮬레이션을 통해 시스템의 성능을 평가하였고, 그 결과로 더욱 정밀하게 목표 궤적을 추적할 수 있음을 확인하였다. This paper discusses the trajectory tracking system of unmanned ground vehicles based on predictive control. Because the unmanned ground vehicles can not satisfactorily complete the path tracking task, highly efficient and stable trajectory control system is necessary for unmanned ground vehicle to be realized intelligent and practical. According to the characteristics of unmanned vehicle, this paper built the kinematics tracking models firstly. Then studied algorithm solution with the tools of the optimal stability analysis method and proposed a tracking control method based on the model predictive control. The controller used a kinematics-based prediction model to calculate the predictive error. This controller helps the unmanned vehicle drive along the target trajectory quickly and accurately. The designed control strategy has the true robustness, simplicity as well as generality for kinematics model of the unmanned vehicle. Furthermore, the computer Simulink/Carsim results verified the validity of the proposed control method.

global map building and navigation of mobile robot based on ultranosic sensor data fusion

진태석,강신출 한국지능시스템학회 2007 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.7 No.3

In mobile robotics, ultrasonic sensors became standard devices for collision avoiding. Moreover, their applicability for map building and navigation has exploited in recent years. In this paper, as the preliminary step for developing a multi-purpose autonomous carrier mobile robot to transport trolleys or heavy goods and serve as robotic nursing assistant in hospital wards. The aim of this paper is to present the use of multi-sensor data fusion such as ultrasonic sensor, IR sensor for mobile robot to navigate, and presents an experimental mobile robot designed to operate autonomously within both indoor and outdoor environments. The global map building based on multi-sensor data fusion is applied for recognition an obstacle free path from a starting position to a known goal region, and simultaneously build a map of straight line segment geometric primitives based on the application of the Hough transform from the actual and noisy sonar data. We will give an explanation for the robot system architecture designed and implemented in this study and a short review of existing techniques, Hough transform, since there exist several recent thorough books and review paper on this paper. Experimental results with a real Pioneer DX2 mobile robot will demonstrate the effectiveness of the discussed methods.

SOC에 의한 동적 프로세서 응용 ( The application of Dynamic process fuzzy self-organising Controller )

여운상,강신출,임영도 한국통신학회 1991 한국통신학회 학술대회논문집 Vol.- No.-

벌집형 압전 발전 소자의 구동방식에 따른 출력 특성

정성수,강신출,박태곤,Jeong, Seong-Su,Kang, Shin-Chul,Park, Tae-Gone 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.2

Recently, energy harvesting technology is increasing due to the fossil fuel shortages. Energy harvesting is generating electrical energy from wasted energies as sunlight, wind, waves, pressure, and vibration etc. Energy harvesting is one of the alternatives of fossil fuel. One of the energy harvesting technologies, the piezoelectric energy harvesting has been actively studied. Piezoelectric generating uses a positive piezoelectric effect which produces electrical energy when mechanical vibration is applied to the piezoelectric device. Piezoelectric energy harvesting has an advantage in that it is relatively not affected by weather, area and place. Also, stable and sustainable energy generation is possible. However, the output power is relatively low, so in this paper, newly designed honeycomb shaped piezoelectric energy harvesting device for increasing a generating efficiency. The output characteristics of the piezoelectric harvesting device were analyzed according to the change of parameters by using the finite element method analysis program. One model which has high output voltage was selected and a prototype of the honeycomb shaped piezoelectric harvesting device was fabricated. Experimental results from the fabricated device were compared to the analyzed results. After the AC-DC converting, the power of one honeycomb shaped piezoelectric energy harvesting device was measured 2.3[mW] at road resistance 5.1[$K{\Omega}$]. And output power was increased the number of harvesting device when piezoelectric energy harvesting device were connected in series and parallel.

Fuzzy Neural Network을 이용한 고주파 유도 부하의 온도제어기 구성

장종승,강신출,임영도 東亞大學校 附設 情報通信硏究所 1996 情報通信硏究所論文誌 Vol.4 No.1

This paper deals with the temperature control of High-Frequency Induction Heating System using a Neuro-Fuzzy controller. We construct a membership function from of fuzzy controller according to the change of temperature for a proper control signal. The defuzzification is replaced by MLP using function approximation, and a data for an learning of defuzzification is obtained by using a general inferance method. We implemented a real-time experiment evaluating the performance of a neuro-fuzzy controller which is designed in this paper.

중고 스마트폰을 활용한 스마트 팜 시스템의 구현

권성갑,강신출,탁한호 한국정보통신학회 2018 한국정보통신학회논문지 Vol.22 No.11

In this paper, we designed a product that can prevent environmental pollution, waste of resources, and leakage offoreign currency by commercializing a green IT solution by merging a used smart phone with the IoT objectcommunication technology for the first time in the world. For the experiment of the designed system, various performanceand communication condition was experimented by installing it in the actual crop cultivation facility. As a result, whena problem occurs, the alarm sound and video notification are generated by the user’s smart phone, and remote control ofvarious installed devices and data analysis in real time are possible. In this study, it is thought that the terminalmanagement board developed for the utilization of the used smart phone can be applied to various fields such asagriculture and environment. 본 논문에서는 중고 스마트폰을 세계 최초로 IoT 사물통신기술과 융합하여 그린 IT 솔루션을 상용화함으로써 환경오염과 자원낭비 및 외화유출을 막을 수 있는 제품으로 설계하였다. 제안한 시스템의 실험을 위하여 실제 농작물재배 시설내에 설치하여 여러 가지 기능과 통신 상태를 실험하였다. 그 결과 문제점이 발생될 경우에 사용자의 스마트폰으로 경보음 및 동영상 알림이 발생되며, 또한 각종 설치된 기기들의 원격제어와 실시간으로 데이터 분석이 가능하였다. 본 연구에서 중고 스마트폰의 활용을 위해 개발된 단말기 관리보드는 농업이나 환경 등의 다양한 분야에응용이 가능하리라 사료된다.

입력 포화가 존재하는 다중 에이전트 시스템을 위한 PI기반의 봉쇄제어

임영훈,탁한호,강신출,Lim, Young-Hun,Tack, Han-Ho,Kang, Shin-Chul 한국정보통신학회 2021 한국정보통신학회논문지 Vol.25 No.1

본 논문에서는 입력 포화가 존재하는 다중 에이전트 시스템의 봉쇄제어 문제를 다룬다. 봉쇄제어의 목표는 추종 에이전트들을 리더 에이전트들에 의해 형성된 convex hull 안으로 몰아넣음으로써 군집 행동을 얻는 것이다. 본 논문에서는 일정한 속도로 움직이는 리더 에이전트들을 고려한다. 움직이는 리더들을 고려한 봉쇄 문제를 해결하기 위하여 PI기반의 분산제어 알고리즘을 제안한다. 다음으로 추종 에이전트들의 목표 위치로의 수렴성을 해석한다. 구체적으로 포화 비선형성을 고려하기 위하여 적분 형태의 리아프노프 함수를 적용한다. 그리고 Lasalle's Invariance Principle을 기반으로 임의의 상수 이득들에 대하여 오차 상태들의 점근적 수렴성을 보인다. 마지막으로 고정된 리더들과 일정한 속도로 움직이는 리더들을 고려한 시뮬레이션을 진행하여 이론적 결과를 검증하였다. This paper discusses the containment control problem for multi-agent systems with input saturations. The goal of the containment control is to obtain swarming behavior by driving follower agents into the convex hull which is spanned by multiple leader agents. This paper considers multiple leader agents moving at the same constant speed. Then, to solve the containment problem for moving leaders, we propose a PI-based distributed control algorithm. We next analyze the convergence of follower agents to the desired positions. Specifically, we apply the integral-type Lyapunov function to take into account the saturation nonlinearity. Then, based on Lasalle's Invariance Principle, we show that the asymptotic convergence of error states to zero for any positive constant gains. Finally, numerical examples with the static and moving leaders are provided to validate the theoretical results.