Position control system for a subsea vehicle

Details Position control system for a subsea vehicle Position control system for a subsea vehicle

1975-07-21

1977-04-12

Farley, Richard A.

Communications: electrical

Selective

Monitoring in addition to control

G01S 966

Patent

active

040178234

ABSTRACT:
A position control system, for use in positioning relative to a subsea well a subsea vehicle or a re-entry tool having thrusters, including a Doppler sonar system connected to the vehicle and operable for generating a Doppler pulse train signal having a pulse rate substantially proportional to the Doppler frequency produced by a change in the spatial position of the vehicle along a predetermined linear coordinate, whereby the occurrence of each pulse signal in the Doppler pulse train signal corresponds substantially to a predetermined linear distance, velocity measurement means coupled to the Doppler pulse train signal and operable for converting it into an equivalent velocity amplitude, a pulse generator operable for producing a predetermined number of pulse signals equivalent to a certain linear distance along the coordinate, up/down counter means operable for counting up from one signal and down from another signal, connection means operable for connecting the up/down counter means to the Doppler pulse train signal and the pulse generator for opposite counting therein, and drive means connected to the up/down counter means and operable for supplying the count therein as an error signal for controlling one of the thrusters.

REFERENCES:
patent: 3594716 (1971-07-01), Waterman
patent: 3707717 (1972-12-01), Frielinghaus

Affiliated with

Also associated with

Rating

Position control system for a subsea vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Position control system for a subsea vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position control system for a subsea vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1284055