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has a control system that uses power to drive the lifting gear to keep the load stabilized along the vertical axis to compensate for any movement of the platform specific point, using power to gain positional accuracy.
269:. 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
288:. 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
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technology used to minimize the movement of a load in one direction. This direction is often vertical, as for a load supported by lifting gear mounted on a
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are used interchangeably. Sensor technologies being used are inertial sensors and GNSS (example: iMAR Navigation) or image processing.
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uses a relatively soft spring which isolates the load from most of the vertical force variation to reduce transmissibility of
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technology applied to minimizing the vertical movement of a load supported by lifting gear mounted on a
165:, heave compensation is used to reduce the impact on the drill system from motions, including those of
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or combinations of these. A new approach to advanced heave compensation systems is offered by
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More advanced heave compensated systems are often specified as systems with
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spring into an adjustable, substantially linear force supporting the load.
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There are two traditional basic types of heave compensation are
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is also used, and differs from the two traditional approaches.
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devices — a plunger cylinder buffered by a volume of gas.
141:. Devices that perform heave compensation are known as
357:. Springer Science & Business Media. p. 206.
384:. Springer Science & Business Media. p. 76.
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299:Examples of heave compensators include:
354:Motion Control in Offshore and Dredging
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280:The simplest motion compensator is the
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44:adding citations to reliable sources
245:converts the non-linear force of a
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381:Foundation Engineering Handbook
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378:Fang, Hsai-Yang (1990-12-31).
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351:Albers, P. (2010-06-10).
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412:Mechanisms (engineering)
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55:"Heave compensation"
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143:heave compensators
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96:January 2024
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149:Description
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