Characteristics of Dynamic Control of Midwater Trawl System in Field Experiments.
Characteristics of Dynamic Control of Midwater Trawl System in Field Experiments.
复制标题
中层拖网系统动态控制的现场试验特点。
DOI：
10.2331/suisan.60.493
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发表时间：
1994
影响因子：
0.4
通讯作者：
Kaname Sato
中科院分区：
文献类型：
--
作者：
F. Hu;K. Matuda;Kaname Sato
为了研究中水拖网的动态控制特性，利用东京水产大学的FRV“Sinyo-Maru”进行了现场试验。用SCANMAR系统和自记式水下载荷水深仪测量了中水拖网的参数。结果表明，突然改变拖速后，网板或网板向下或向下或向下移动。然而，当经纱长度改变时，手绳的张力在恢复到原来的状态之前立即大大增加或减少，这被称为“过冲”现象，这一现象在水板上也同时观察到。
In order to investigate the characteristics of dynamic control of a midwater trawl, a field experiment was conducted by FRV “SINYO-Maru” of Tokyo University of Fisheries. The parameters of the midwater trawl being towed were measured with a SCANMAR system and a self-recording underwater load-depth meter. It was shown that the net and otterboards moved deeper or shallower when the towing speed was changed abruptly. However, when the warp length was changed, the handrope tension increased or decreased greatly immediately before returning to its original condition, called an “over-shoot” phenomenon and this was simultaneously observed for the otterboard.