주기관 쟈케트냉각수 온도를 위한 피드포워드 제어시스템의 구성과 분석

Configuration and Analysis of a Feed-forward Control System for Jacket Cooling Water Temperature of Marine Prime Diesel Engine

The temperature control of jacket cooling water where the pick-up sensor of its control loop is placed at the outlet of marine diesel engine shows more difficulties in attaining stable and desirable properties than the case where the measuring point is at the inlet of engine due to dead times included in pipes and engine itself. This study suggests a forward control system which leads to improved performances when disturbances are given to the system. Two dead times in the modelling were described for inlet pipes to engine as well as for thermal process inside the engine. The results of analysis were shown by simulations to confirm responses under different conditions.