Abstract
Recently, the controllable pitch propeller (CPP) has become popular because of such merits as (i) the maximum power of the main engine can be available at any speed condition of the voyage, (ii) a shaft generator can be used because of capability of keeping the engine speed constant at any navigation speed, and (iii) dead slow cruising is possible.Introduction of the CPP, however, brings not only these merits but also complexity of how to control a regulator handle position of the engine (R) and the propeller pitch angle (θ) simltaneously. It means that these two parameters, R and θ interfere the outputs such as the propulsion force or engine speed.Reported here is the simulation studies of the engine-CPP consolidated control to use a shaft generator normally at any navigation speed. For this, at first, a simulation model for the object system was made, and a decoupling control theory was applied to keep the engine speed constant. As a result, the expected performance was obtained.
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