PROBLEM TO BE SOLVED: To provide a controlling method and controlling device for a hard sail of a hard sail ship in which the extendable hard sail is prevented from damage while sailing.SOLUTION: A controlling device comprises: a bending moment detector 31 measuring actual bending moment acting on a must M of an extendable hard sail ES; a controller 20 comparing the detected value by the bending moment detector 31 with a threshold and, when the detected value is over the threshold, transmitting control signal with which the height of the extendable hard sail ES is reduced or the extendable hard sail ES is rotated so as to be in parallel with wind; driving mechanisms 11, 12 shortening or rotating the hard sail based on the control signal from the controller 20. In a case where a large actual wind load is burdened, such as a case of strong wind, the extendable must M is shortened or rotated for releasing wind to reducing the wind load, resulting in prevention damage on the extendable hard sail ES.
【課題】航行中に伸縮硬帆の損傷を防止する硬帆船の硬帆制御方法および制御装置を提供する。【解決手段】伸縮硬帆ESのマストMに作用する実曲げモーメントを計測する曲げモーメント検出器31と、曲げモーメント検出器31の検出値と閾値とを比較し、検出値が閾値を超えたとき伸縮硬帆ESの高さを縮小するか風向きに平行になるように旋回させる制御信号を発するコントローラ20と、コントローラ20からの制御信号に基づき硬帆を縮小させるか旋回させる駆動機構11,12とからなる。強風時等の実風荷重が大きい時に、伸縮マストMを縮小させたり風を逃がすよう旋回させて風荷重を減じるので、伸縮硬帆ESの損傷を防止することができる。【選択図】図1
CONTROLLING METHOD AND CONTROLLING DEVICE FOR EXTENDABLE HARD SAIL OF HARD SAIL SHIP
硬帆船の伸縮硬帆制御方法および制御装置
2015-10-05
Patent
Electronic Resource
Japanese
European Patent Office | 2016
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