IMAG0235 (3)
3 Any vessel (or other object) has six freedoms of movement; three rotations and three translations. In a vessel they can be illustrated as roli, pitch, yaw, surge, sway and heave.
SHIP MOTIONS
©2003IMCA
THE SIX FREEDOMS OF VESSEL MOVEMENT
THE5ETHR EE CONSTITUTE 7HEFUNCTONOFDP
Sketch 2.2 - The Six Freedoms ofMovement
4 Dynamie positioning is concemed with the automatic control of surge, sway and yaw. Surge and sway, of course, comprise the position of the vessel, while yaw is defined by the vessel heading. Both of these are controlled about desired or "setpoint" values input by the operator, i.e. position setpoint, and heading setpoint. Position and heading must be measured (in order) to obtain the error from the required value. Position is measured by one or morę of a rangę of position references, while heading information is provided from one or morę gyrocompasses. The difference between the setpoint and the feedback is the error or offset (uchyb ustalony; przesuniecie), and the DP system operates to minimise these errors.
Wyszukiwarka
Podobne podstrony:
of both sides of the ID card (passport or other document confirming the identity of the shareholder;About Views Views are customized prcsentations of data in one or morc tablcs or other views. You canand such conditions an authentic self-management?5 In other words, has the model of self-management22484 mbs 072 MY HRKATHING SYSTEM heavy weight- or other feat approaching the limit of the individual 4 society2 r ▼ ^L-4 Society Gvcs +4 to any ottempt to contro) or destroy any Scim144 łthousands in any war or mere troop movement. These wcrc thc miners, carpenters, stonemasons MCITYFIX ANY TV OR RADIOever madę! ONLY $13 for this 2 volume lS00-pafO Ghirardi Servic« Libraryrossperot Any group controłłed by Pwot imnwdwrtcly bccomes Straight and Con«watrvc. towng any Wm144 łthousands in any war or mere troop movement. These wcrc thc miners, carpenters, stonemasons Ml 4 society2 r ▼ ^L-4 Society Gvcs +4 to any ottempt to contro) or destroy any Scim144 łthousands in any war or mere troop movement. These wcrc thc miners, carpenters, stonemasons Mhtdctmw 017 Here we see a simple handgun, without which there could hardly be any comicbooks, or TViceage124 TM and <D 2002 fox and its related entities. all rights reserved. private use only. saiceage324 TM and <D 2002 fox and its related entities. all rights reserved. private use only. saHomework: Online HW 1.7 OverviewfSWPI 0(B S® B0 OSI Morę Enter any number or expression in the editwięcej podobnych podstron