GB1287794A - Ship stabilisation apparatus - Google Patents

Ship stabilisation apparatus

Info

Publication number
GB1287794A
GB1287794A GB53743/69A GB5374369A GB1287794A GB 1287794 A GB1287794 A GB 1287794A GB 53743/69 A GB53743/69 A GB 53743/69A GB 5374369 A GB5374369 A GB 5374369A GB 1287794 A GB1287794 A GB 1287794A
Authority
GB
United Kingdom
Prior art keywords
ship
signal
speed
operational amplifiers
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB53743/69A
Inventor
Albert Duberley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB53743/69A priority Critical patent/GB1287794A/en
Priority to US00084108A priority patent/US3738304A/en
Priority to DE19702054049 priority patent/DE2054049A1/en
Publication of GB1287794A publication Critical patent/GB1287794A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/08—Control of attitude, i.e. control of roll, pitch, or yaw
    • G05D1/0875—Control of attitude, i.e. control of roll, pitch, or yaw specially adapted to water vehicles

Abstract

1287794 Automatic roll stabilisation NATIONAL RESEARCH DEVELOPMENT CORP 23 Oct 1970 [3 Nov 1969] 53743/69 Heading G3R In an automatic roll stabilization system for a ship, the signal controlling a stabilizing fin below the water line is formed by several operational amplifiers from a single measurement of rolling motion. As described, signals corresponding to roll angle, velocity and acceleration produced with the aid of a number of operational amplifiers having capacitive and other feedback are added together in suitable proportions determined by adjustable potentiometers. The resultant signal controls stabilizing fins through a hydraulic follow-up servosystem involving a solenoid-operated valve and a variable delivery pump. A signal dependent on ship's 'speed, derived from a log, is applied through further operational amplifiers associated with rectifiers to produce a signal inversely proportional to the square of speed which is used to modify loop gain to compensate for the variation of fin effectiveness with speed. A fixed signal suited to the ship's speed may be substituted for the signal from the log if the latter fails. Amplifier saturation and diode limiting is employed to prevent excessive control signals. A manual selector switch may be operated to introduce a further operational amplifier which washes out the roll angle signal with a long integrating time constant so that the ship is stabilized without correction of long term list. In other positions of the manual selector switch the operational amplifiers may be arranged as an oscillator to produce roll of the ship artificially or the output of the amplifiers and the response of the fins to the oscillator signals may be checked on a built-in voltmeter which may also be used during normal roll stabilization.
GB53743/69A 1969-11-03 1969-11-03 Ship stabilisation apparatus Expired GB1287794A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB53743/69A GB1287794A (en) 1969-11-03 1969-11-03 Ship stabilisation apparatus
US00084108A US3738304A (en) 1969-11-03 1970-10-26 Ship stabilization apparatus
DE19702054049 DE2054049A1 (en) 1969-11-03 1970-11-03 Control device for stabilizing ships with the help of active fins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53743/69A GB1287794A (en) 1969-11-03 1969-11-03 Ship stabilisation apparatus

Publications (1)

Publication Number Publication Date
GB1287794A true GB1287794A (en) 1972-09-06

Family

ID=10468834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53743/69A Expired GB1287794A (en) 1969-11-03 1969-11-03 Ship stabilisation apparatus

Country Status (3)

Country Link
US (1) US3738304A (en)
DE (1) DE2054049A1 (en)
GB (1) GB1287794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106904252A (en) * 2017-02-27 2017-06-30 威海海洋职业学院 Dynamic anti-saturation ship stabilization control method and system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847348A (en) * 1973-11-14 1974-11-12 Us Navy Roll computer
GB1538229A (en) * 1975-05-01 1979-01-10 Brown Bros & Co Ltd Acceleration measuring devices
US4261278A (en) * 1979-12-17 1981-04-14 Gaudin George C Gyro-controlled pitch stabilizing system
US4388889A (en) * 1981-03-31 1983-06-21 The United States Of America As Represented By The Secretary Of The Navy Electrical actuator for ship roll stabilization
US4993348A (en) * 1987-08-20 1991-02-19 Wald Leonard H Apparatus for harvesting energy and other necessities of life at sea
DE19802354A1 (en) * 1998-01-22 1999-08-05 Siemens Ag Stabilizing device for ship movements
ITTO20120472A1 (en) * 2012-05-31 2013-12-01 Cmc Marine S R L CONTROL PROCEDURE FOR ANTI-ROLLOUS STABILIZATION OF BOATS, ITS STABILIZATION SYSTEM AND IT PRODUCT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890673A (en) * 1954-03-11 1959-06-16 Jr Joseph H Chadwick Control system for stabilizing fins
NL214582A (en) * 1956-02-20
US3020869A (en) * 1959-08-12 1962-02-13 Sperry Rand Corp Activated fin ship stabilizer
US3227935A (en) * 1962-01-20 1966-01-04 Kabushikikaisha Tokyo Keiki Se Servo system
US3465276A (en) * 1967-09-06 1969-09-02 Gen Signal Corp Negative feedback circuit employing combination amplifier and lead-lag compensation network
GB1210373A (en) * 1967-10-24 1970-10-28 Muirhead Ltd Improvements in or relating to ships' roll stabilizer control systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106904252A (en) * 2017-02-27 2017-06-30 威海海洋职业学院 Dynamic anti-saturation ship stabilization control method and system
CN106904252B (en) * 2017-02-27 2019-05-24 威海海洋职业学院 Dynamic anti-saturation ship stabilization control method and system

Also Published As

Publication number Publication date
DE2054049A1 (en) 1971-05-27
US3738304A (en) 1973-06-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee