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이근호 한국서원학회 2022 한국서원학보 Vol.15 No.-
This paper puts an in-depth study on Hong Gasin's activities after the Imjin War and the projects implemented to honor him after his death. With the Bukin leading the political situation after the Imjin War, Hong Gasin was forced to have limited activities because he belonged to the Namin. He did not raise any particular objection when some of the meritorious subjects honored contributors selected by Seoin and Namin who were in solidarity were raised a problem and eventually excluded by the political leadership. Hong Gasin’s activities were remarkably revealed when he held a state position such as Hyeju Moksa and Gaeseong Yusoo. On the other hand, there was no specific political maneuvering in the central office due to the political situation at the time. However, Hong Gasin had activities related to making a diversion regarding Daebook and Yuyeonggyeong and their supporters Although he was a statesman of merit later in his life, he was constrained due to the political situation of the time. On the other hand, he was honored by the king, who bestowed a sacrificial writing and a compiled gravestone inscription by leading figures. His anthology publishing was continued, and the Ohhyeonseowon(renamed as Insanseowon later) in the Asan region was shrined in terms of worship movement. Considering the political symbolism of Ohhyeon, it was a meaningful honoring process for Hong Ga-sin and his descendants.
TORQUE RIPPLE MINIMIZATION CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTORS FOR EPS APPLICATIONS
이근호,최웅철,S. I. KIM,,S. O. KWON,홍정표 한국자동차공학회 2011 International journal of automotive technology Vol.12 No.2
This paper identifies a control method used to reduce torque ripple of a permanent magnet synchronous motor (PMSM) for an electric power steering (EPS) system. NVH (Noise Vibration Harshness) is important for safe and convenient driving. Vibration caused by motor torque is a problem in column type EPS systems. Maintaining a very low torque ripple is one solution that allows for smoother steering. Theoretically, it is possible to design and drive the motor without torque ripple. However, in reality, a PMSM system torque ripple is caused by the motor itself (saturation in the iron core and EMF distortion) and the imperfect driver. This paper analyzes torque ripple of a PMSM system, and an advanced PMSM control method for the column typed EPS system is presented. Results of the analysis indicate that the compensation current is needed in order to minimize torque ripple when a PMSM is driven.
이근호,Lee, Ceun-Ho 한국멀티미디어학회 2004 멀티미디어학회논문지 Vol.7 No.11
본 논문에서는 저전압에서 동작이 가능하며 이득값이 뛰어난 능동소자를 이용하여 750kHz의 중심주파수특성을 나타내는 연속시간 대역통과 능동필터를 설계하였다. 이용된 적분기는 이득특성에 영향을 주는 트랜스컨덕턴스값을 증가시키기 위해 CMOS 상보형 캐스코드 방식을 이용하여 구성되었으며, 0.25$\mu\textrm{m}$ CMOS n-well 공정 파라미터를 이용한 hspice 시뮬레이션 결과, 2V 공급전압하에서 42dB의 이득값과 200MHz의 단위이득주파수 특성을 나타내었다. 또한 이를 이용하여 설계된 대역통과 능동필터는 747kHz의 중심주파수특성을 나타내고 659kHz의 대역폭 특성을 보여주었다. In this paper, a new continuous-time bandpass active filter for lour-voltage applications is proposed. The active filter is composed of the CMOS complementary cascode circuit which can increase trans-conductance of an active element. These results are verified through the 0.25$\mu\textrm{m}$ CMOS n-well parameter hspice simulation. As a result, the gain and the unity gain frequency is 42dB and 200MHz respectively in the integrator. Additionally, center frequency of the bandpass active filter is 747kHz. And also bandwidth of the filter is 649kHz on 2V supply voltage.
사용자 몰입형 멀티미디어 서비스를 위한 관광콘텐츠용 저작도구 개발
이근호 국제차세대융합기술학회 2020 차세대융합기술학회논문지 Vol.4 No.3
본 논문에서는 다양한 사용자들의 요구를 반영해 줄 수 있는 관광서비스용 앱설계를 위한 멀티미디어 저 작도구를 설계 제안하고, 이를 이용하여 앱을 설계하였다. 저작도구는 사용자의 위치정보를 활용하여 정해진 구역 에서 콘텐츠를 자동으로 제공할 수 있게 하였다. 특히, 사용자들의 감성을 자극하여 몰입도를 향상시키기 위하여 백그라운드 뮤직 형태로 사운드스케이프 개념을 활용하는 영역과 정확한 사실을 전달하는 정보 영역을 구분하여 쉽게 탑재와 제어가 가능하도록 하였다. 저작도구의 메인화면에는 영역을 지정하기 위한 지도화면과 도구상자 그 리고 콘텐츠 탑재를 위한 입력상자를 구분하여 저작도구 사용자의 콘텐츠 활용이 용이하도록 설계하였다. 제안된 저작도구 설계를 위해 구글맵, 구글어스 플러그인, 오픈 API, KML 등을 이용하였다. In this paper, I proposed a multimedia authoring tool for designing tourism application that can reflect the needs of various users. It is possible to automatically provide content in a predetermined area by using the user’s location information. In Particular, in order to stimulate the emotions of the users, it is possible to distinguish and control the area using the soundscape concept and the information area. In the main screen of the authoring tool, the map, tool box, and input box are divided to make it easy for administrators to control the contents. I used Google map, Google earth plugin, Open API, KML, etc. to design the authoring tool.