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Relation between P-D value of Autopilot and Transfer Distance under Wind Pressure
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 Title & Authors
Relation between P-D value of Autopilot and Transfer Distance under Wind Pressure
Seong, Yu-Chang;
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 Abstract
When performing steering by an autopilot (automatic steering gear), a sensitivity adjustment is mainly determined by P value and D value. These values differ in the optimal combination by model of ship and external forces. This research was carried out simulation case studies and examined movement of Pure Car Carrier, which easily received ship by wind pressure influence in low speed We investigated the relation of horizontal migration(transfer) of ship`s body and P-D value. Based on it, four parameters of P-D at approaching berth could be suggested Hence there were suggestions of parameters; Distance to maximum lee point, Time to maximum lee point, Time to return to original course and Time to 300th second. The correlation of these parameters and P-D value were also considered. As a result, we think that this index, like formulated P-D, leads to an easy and safe navigation by utilizing these indices.
 Keywords
Autopilot;P-D value;Wind pressure;Effective handling of rudder;Safety navigation;
 Language
English
 Cited by
 References
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