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광파이버 변위 센서를 적용한 자기베어링 정적 부상 제어 연구
강종규,신우철,홍준희 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-
Five expensive sensors are necessary to control a magnetic bearing system. The sensor price rate of magnetic bearing system is high. So it is necessary that cheap and good sensor is developed. The optical fiber displacement sensor is adaptive to satisfy this condition. We can design magnetically suspended spindle based on static characteristic of optical fiber displacement sensor developed. The controller can be designed by decoupled feedback PD. Therefore, it is simpler than any other controller comparatively.
광파이버 변위 센서를 이용한 자기베어링 계의 부상 제어
강종규,신우철,송관의,홍준희 충남대학교 공업교육연구소 2003 論文集 Vol.26 No.1
Five expensive sensors are necessary to control a magnetic bearing system. The sensor price rate of magnetic bearing system is high. So it is necessary that cheap and good sensor is developed. The optical fiber displacement sensor is adaptive to satisfy this condition. We can design magnetically suspended spindle based on static characteristic of optical fiber displacement sensor developed. The controller can be designed by decoupled feedback PD. Therefore, it is simpler than any other controller comparatively.
능동자기베어링 시스템의 제어기 설계 및 불균형 진동 분석
강종규,신우철,홍준희 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
Active magnetic bearings (AMB's) have become practical in many industrial fields and numbers of studies for magnetic bearing systems have been reported. However, AMB systems are open-loop unstable and thus require feedback control for robust stabilization and performance. In this paper, first, a rotation of the rotor around the inertial axis is considered and a rigorous modeling of a magnetic bearing system in which the rotation of the rotor is on its axis of inertia is developed. Next, to stabilize the AMB system a PID controller is used and experimentally analyze its rotational response.
LINEAR RECURSIVE QUERY의 효율적 처리를 위한 algorithm에 관한 연구
강종규,진성일 충남대학교 자연과학연구소 1987 忠南科學硏究誌 Vol.14 No.1
First-order database is defined as a function - free first - order theory. First -order database consists of the extensional database (EDB) and the intensional database (IDB). Henschen and Naqvi(HN algorithm), Wavefront algorithm,σ-Wavefront algorithm and counting method were developed for the efficient processing of first - order database queries in case of Transitive Closure queries(TC) and Single Looping rule and Single Recursion point (SLSR). We could develop an algorithm, so called, level counting which optimized the HN algorithm using counting method and σ-Wavefront algorithm, so we could reduce the redundancies and give the correct answer and guarantee the termination.
강종규(Jong-Gyu Kang),김계환(Kye-Hwan Kim),조성빈(Sung-Been Cho),진성일(Seong-Il Jin) 한국정보과학회 1997 정보과학회 컴퓨팅의 실제 논문지 Vol.3 No.5
웹 서비스 방식은 멀티미디어 데이타를 모두 클라이언트 영역으로 다운로드 받고 난 후에 외부의 매체 재생기를 통하여 재생하기 때문에 실시간 처리가 되지 않는다. 본 논문에서는 AVI, MPEG등의 멀티미디어 데이타를 프레임 단위로 읽어들여 스트림화하고 네트워크를 통하여 전송 및 디스플레이하기 위한 멀티미디어 데이타 입출력 DLO(Dynamic Linking Object)를 개발하여 웹 서버와 연동하므로써 인터네스 상에서 실시간으로 동영상 데이타 서비스가 가능한 실시간 웹 서버 모델을 제시하고 구현하였다. The WWW(World-Wide Web) service can not process multimedia data in real-time because it has to download multimedia data to the clients local storage and then playbacks them using an external media player. In this paper, we introduced the multimedia input/output DLO(Dynamic Linking Object) for AVI and MPEG. The DLO reads multimedia data in frame unit and makes them streams, transfer them via the network and make them displayed. By integration DLO and a web server, we obtained enhanced web server and could make the multimedia data processed in real-time.
노면 소음 능동제어 시스템의 성능 평가를 위한 HIL 시뮬레이터 개발
강종규(Jonggyu Kang),김현석(Hyounsuk Kim),도지현(Jihyun Doe),오치성(Chisung Oh),오동호(Dongho Oh) 한국자동차공학회 2022 한국 자동차공학회논문집 Vol.30 No.5
To evaluate hardware, software, and the performance of the road noise active control system prior to conducting the actual vehicle test, a HIL(Hardware-In-the-Loop) simulator was proposed. Reference signals and primary noise signals were measured by accelerometers and microphones on the test vehicle, respectively. The secondary path, which was used for the plant model in the simulation loop, was also modeled in the test vehicle. Various references and noise data could be stored on the host PC of the HIL simulator, and optionally used for simulations. The HIL simulator hardware was developed by using a multicore, system-on-chip processor configured with TMS320C66x CorePac DSP. This multi-rate system is composed of the sampling rate conversion blocks for input and output signals. The control signal of the active noise control system was then convolved with the secondary path model, and a residual error signal was produced with the addition of the primary noise. The proposed system was verified in terms of convergence characteristics, while noise reduction performance was evaluated after comparing the MATLAB simulation with the actual vehicle test.