純流体素子を用いたコントローラとその舶用プラントへの応用

概要

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Recently, the problem of less-maintenansability of ship machinery plants is attracting attention in the ship building industry. This problem is closely concerned with reliability, so the authors studied the application of the fluidics which is very reliable since there are no mechanical moving elements. As the object of application, the authors selected the controller which was causing troubles such as the sticking of the nozzle flapper or the abnormality of mechanics due to vibration, and made a comparative study of the fluidic controller and usual type controller in regards to less-maintenansability and controllability. The process of study follows. (1) Analysis of controllability of the fluidic controller. (2) Analysis of controllability of the usual type controller. (3) Experiments with both types of controller concerning less-maintenansability on board. The results of this study show that the fluidic controller presents no problems under an unfavorable condition such as a board ship, and has superior controllability in comparison with usual ones.