Method and apparatus for determining the position of a mobile apparatus on an immersed structure
AssigneeSotraplex S.A.
InventorsPierre Poupel, Patrick Le Rolland, Alain Faure
Life of this patent
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Abstract
The invention relates to the determination of the position of a self-contained operating apparatus movable along any line of displacement over any immersed structure. A follower apparatus is associated with the operating apparatus, and the position of this follower apparatus, along a line of displacement chosen as the reference line, is determined at any instant. The follower apparatus is displaced by the operating apparatus by servo-control means, and at any instant the transverse distance between the operating apparatus and the follower apparatus is monitored.
Claims23
A method of determining the position of an operating apparatus arranged to move over an immersed structure along any line of displacement, wherein a follower apparatus is associated with said operating apparatus and is movable along a line of displacement chosen as the reference line, the method comprising determining at any instant the longitudinal position of said follower apparatus along said reference line, establishing a relative servo-control for displacing the operating apparatus and the follower apparatus along their respective lines of displacement, and monitoring the transverse distance between the said apparatuses at any instant.
Apparatus for determining the position of an operating apparatus which is movable over an immersed structure along any line of displacement, the apparatus comprising a follower apparatus which is movable along a line of displacement chosen as the reference line, detection means for recording the longitudinal position of the follower apparatus on the reference line, servo-control means for linking the displacement of the follower apparatus and of the operating apparatus along their respective lines of displacement, and detection means for recording the transverse distance between the operating apparatus and the follower apparatus.
Dependencies are inferred from the claim text.