PADE'의 근사법에 의한 선박용 디젤기관에 탑재된 기계유압식 조속기의 성능개선에 관한 연구

• 영문명: A Study on the Performance Improvement of a Mechanical-Hydraulic Governor used a Marine Diesel Engine by Pade' Approximation
• 발행기관: 한국해양대학교 해사산업연구소
• 저자명: 심기우(Sim Gi-Woo) 박진길(Park Jin-Gil)
• 간행물 정보: 『해사산업연구소논문집』제8집, 181~200쪽, 전체 20쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 1998.12.01

영문 초록

The marine propulsion diesel engine has been widely applied with a mechanical-hydraulic governor to control the ship speed for a long time. However, it is 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. To solve these problems of control systems, the performance improvement of mechanical-hydraulic governor is required. In this paper, dead time in the transfer function of the given control system, which is occurred between fuel injection and power output in a long stroke and low speed diesel engine, is converted into a 2nd order Pade' approximation to linearize the control system for analysis and design of the speed control systems through frequency response method. The influence of the dead time. gain, and damping factor is discussed by using Nichols chart, and the optimal parameters are investigated through the computer simulations. The performance improvement of a conventional mechanical-hydraulic governor is confirmed through the above results.

목차

Abstract

기호 설명

1. 서론

2. 선박 속도제어 계통의 수학적 모델링

3. 속도제어 계통의 안정도 해석

4. 컴퓨터 시뮬레이션 결과 및 고찰

5. 결론

참고문헌