대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1997년도 하계학술대회 논문집 B
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- Pages.696-698
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- 1997
w 변환에 의한 기계-유압식 조속기를 가진 선박용 디젤기관의 속도제어 시스템 설계
The velocity control system design of marine diesel engine with mechanical-hydraulic governor using w transformation method
- Kang, C.N. (Che Ju Univ.) ;
- Park, J.G. (Korea-Maritime Univ.) ;
- Chung, J.Y. (Dongeui Tech. Junior Col.) ;
- Roh, Y.O. (Mokpo-Maritime univ.)
- 발행 : 1997.07.21
초록
The marine diesel engine have been widely applied with a mechanical hydraulic governor to control the ship speed for long time. But it was recently very difficult for the mechanical hydraulic governor to control the speed of engine under the condition of low speed and low load because of jiggling by rough fluctuation of rotating torque and hunting by dead time of diesel engine. In order to analyze the speed control system the transfer function was converted from z to w transformation. The author proposed velocity control system with feedback loop by PID controller in order to stabilize for unstable area. The influence of dead time was discussed by Nichols chart and unit step response curve. It was confirmed through computer simulation that the performance improvement of a mechanical hydraulic governor can be obtained by PID controller.
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