GB1413745A - Control apparatus - Google Patents

Control apparatus

Info

Publication number
GB1413745A
GB1413745A GB662373A GB662373A GB1413745A GB 1413745 A GB1413745 A GB 1413745A GB 662373 A GB662373 A GB 662373A GB 662373 A GB662373 A GB 662373A GB 1413745 A GB1413745 A GB 1413745A
Authority
GB
United Kingdom
Prior art keywords
gyro
earth
torque
gyrocompass
feb
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
GB662373A
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki Co Ltd
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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Publication of GB1413745A publication Critical patent/GB1413745A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • 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
    • 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
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Feedback Control In General (AREA)
  • Gyroscopes (AREA)

Abstract

1413745 Gyrocompass TOKYO KEIKI K K 9 Feb 1973 [12 Feb 1972] 6623/73 Heading G1C [Also in Division G3] A control system operating on an object which is subjected to periodic motion includes electrical means including an amplifier which makes the system unresponsive to motion having a period much greater than the natural period of the object. As shown, the invention is applied to a gyrocompass. Blocks 21 and 22 represent the vertical and horizontal axes respectively of the gyro. An input torque at P1 produces an inclination e(S) at P2 and an input P3 produces an azimuth angle Ï(S) at P4. The invention comprises the control loop 252 having the transfer function shown, in which Á is the gain, T is a time constant selected to produce the desired result and S is the Laplace operator. Alternative circuits for 25 2 are described Figs.7A to 7C (not shown); they comprise operational amplifiers with RC feedback and a method of selecting suitable component values is discussed mathematically. Block 23 represents a north seeking device (not described) and 24 the torque about the vertical axis due to the rotation of the earth; the symbols represent the angular velocity of the earth and the instant latitude of the gyro. A term is added at 27 corresponding to the component of angular velocity of the earth about the vertical axis and another at 26 represents a torque about the horizontal axis produced by gravity on the unbalance of the gyro in the N-S direction. The invention is said to eliminate constant errors which occur in a purely proportional control system and arise due to temperature effects.
GB662373A 1972-02-12 1973-02-09 Control apparatus Expired GB1413745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1513572A JPS53200B2 (en) 1972-02-12 1972-02-12

Publications (1)

Publication Number Publication Date
GB1413745A true GB1413745A (en) 1975-11-12

Family

ID=11880363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB662373A Expired GB1413745A (en) 1972-02-12 1973-02-09 Control apparatus

Country Status (3)

Country Link
JP (1) JPS53200B2 (en)
GB (1) GB1413745A (en)
IT (1) IT979030B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037533A1 (en) * 1998-01-22 1999-07-29 Siemens Aktiengesellschaft Stabilising device for the movements of a ship

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6253205B2 (en) * 2015-02-04 2017-12-27 三菱重工業株式会社 Control device, ship and control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999037533A1 (en) * 1998-01-22 1999-07-29 Siemens Aktiengesellschaft Stabilising device for the movements of a ship
US6367400B1 (en) 1998-01-22 2002-04-09 Siemens Aktiengesellschaft Stabilization apparatus for ship movement

Also Published As

Publication number Publication date
IT979030B (en) 1974-09-30
JPS4883281A (en) 1973-11-06
JPS53200B2 (en) 1978-01-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930207