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- Motion_compensator abstract "A motion compensator is a device that decreases the undesirable effects of the relative motion between two connected objects. Motion compensators are usually placed between a floating object and a more stationary object, such as a vessel or a structure fixed to the seabed. The motion compensator does not prevent the motion, but tries to eliminate the negative effects of the movement. These negative effects include (1) the changes in force and stresses, and (2) the hysteresis, i.e., the rapid start-and-stop "jerking" of the objects. A heave compensator is a kind of motion compensator. Whereas most motion compensators will compensate for movement in all directions, the heave compensator will compensate for movement in only one direction, for instance, for vertical movement. In practice, the words motion compensator and heave compensator are used interchangeably. Sensor technologies being used are inertial sensors and GNSS (example: iMAR Navigation) or image processing.The simplest motion compensator is the anchor chain of a ship. Not only does the anchor prevent the ship from drifting, but the chain itself dampens the movement of the ship due to undulating motion of the waves. Generally, motion compensators are implemented as springs. For very large forces (dozens to hundreds of tonnes), the springs are implemented as gas springs: hydropneumatic devices — a plunger cylinder buffered by a volume of gas.Examples of heave compensators include:Drill string compensatorsRiser tensionersConductor tensionersGuideline tensionersMore advanced heave compensated systems are often specified as systems with Passive Heave Compensation or Active Heave Compensation or combinations of these.".
- Motion_compensator wikiPageID "3844877".
- Motion_compensator wikiPageRevisionID "544275629".
- Motion_compensator hasPhotoCollection Motion_compensator.
- Motion_compensator subject Category:Mechanisms.
- Motion_compensator type ChemicalProcess113446390.
- Motion_compensator type Mechanism113512506.
- Motion_compensator type Mechanisms.
- Motion_compensator type NaturalProcess113518963.
- Motion_compensator type PhysicalEntity100001930.
- Motion_compensator type Process100029677.
- Motion_compensator comment "A motion compensator is a device that decreases the undesirable effects of the relative motion between two connected objects. Motion compensators are usually placed between a floating object and a more stationary object, such as a vessel or a structure fixed to the seabed. The motion compensator does not prevent the motion, but tries to eliminate the negative effects of the movement.".
- Motion_compensator label "Deiningscompensator".
- Motion_compensator label "Motion compensator".
- Motion_compensator sameAs Deiningscompensator.
- Motion_compensator sameAs m.0b2zk8.
- Motion_compensator sameAs Q2779833.
- Motion_compensator sameAs Q2779833.
- Motion_compensator sameAs Motion_compensator.
- Motion_compensator wasDerivedFrom Motion_compensator?oldid=544275629.
- Motion_compensator isPrimaryTopicOf Motion_compensator.