Sharif Digital Repository

This research is focused on determination of optimum working conditions of a vessel power consisting of diesel engines, a twin input gearbox and a controllable pitch propeller. Combined dual input gearbox as an intermediate member of the power train is run by two diesel engines. This gearbox consists of gears, multi disk input clutches, and output. One diesel engine acts as master and works as primary driver, and the second diesel is used as auxiliary during excess power needs. Gearbox model includes nonlinear elements like multi disk clutch and gear backlash. Diesel engines are modeled as power sources controlled by PID control of power lever for maintaining the desired speed. Tejson-...