• Title/Summary/Keyword: 이승환

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Sensorless Vector Control of Induction Motor Using Fuzzy PI Controller (퍼지 PI제어기를 이용한 유도전동기 속도 센서리스 벡터제어)

  • 남상현;이재환;김대균;김길동;이승환;한경희
    • Proceedings of the KIPE Conference
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    • 1999.07a
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    • pp.390-393
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    • 1999

  • For high performance ac drives, the speed sensorless vector control and a speed control algorithm base on the Fuzzy PI controller have received increasing attention. A Fuzzy PI controller is used for robust and fast speed control and space vector modulation method is used for PWM wave generation in this proposed system. The computer simulation results show that the proposed controller are more excellent control characteristics than conventional PI controller in transient-state response.

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A Study of Individuality of Seung_Hwan Lee's Music Represents (이승환의 음악에서 나타나는 개성에 관한 연구)

  • Lim, Hae-Kwon;Cho, Tae-Seon
    • Journal of Digital Convergence
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    • v.13 no.11
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    • pp.409-415
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    • 2015

  • Summary. With the advent of the internet and the concept of social network service, people of present days are flooded daily with new varieties of the communication channel. One of the most affected group of people may be singing artists. This over-growing number of communication channels pushes singers to put just as many efforts to establish and groom his or her unique identity as an artist. In old 'pre-internet' days, any singing artist's superficial features, like the tone of voice or stage presentation, were the only transcriptive criteria upon which the artist was adjudicated. New developments in technology, however, have set a new paradigm for singing artists of the present day. Respective criteria of today extend beyond the realm of music and comprise musicianship, requiring much scrupulous attention on the various area to propagate and protect one's unique identity as an artist. In light of this phenomenon, this study looks into Mr. Lee, Seung Hwan whom may undoubtedly be one of the most representative ballad singers of 90's. We can probably see his music in 5 features such as Rock Sound based on using various instruments, World Music Sound, Massive Choir, Challenge for the New Style, Lyrics of Life. As a singer-songwriter, he colored numerous albums and influenced the era, unlike many others. He still works vigorously, worthy of his epithet, a 'present-progressive' artist. The object of this study is how Mr. Lee has been proactively dealing with the phenomenon above.

  • https://doi.org/10.14400/JDC.2015.13.11.409 인용 PDF KSCI