DETERMINING A POSITION OF A HYDRAULIC SUBSEA ACTUATOR

摘要

A method and an apparatus (280) for determining an estimate of a position of a hydraulic subsea actuator (200), wherein the hydraulic subsea actuator (200) has a fluid port (220) fluidly connected to a fluid source (260). The apparatus (280) comprises a hydraulic cylinder (310) connected in series between the fluid source (260) and the fluid port (220) of the hydraulic subsea actuator, and a movable piston (320) arranged in the second hydraulic cylinder (310), a position determining device, arranged to determine a position of the movable piston (320), and a signal processing device (350), arranged to calculate the estimate of the position of the hydraulic subsea actuator based on the position of the movable piston.

主权项

1. A method for determining an estimate of a position of a hydraulic subsea actuator having a fluid port fluidly connected to a fluid source, the method comprising:
connecting a hydraulic cylinder in series between the fluid source and the fluid port of the hydraulic subsea actuator, a movable piston being arranged in the hydraulic cylinder; determining a position of the movable piston; and calculating the estimate of the position of the hydraulic subsea actuator based on the position of the movable piston.