GB1536540A - Speed control of guided vehicles - Google Patents

Speed control of guided vehicles

Info

Publication number
GB1536540A
GB1536540A GB3713/75A GB371375A GB1536540A GB 1536540 A GB1536540 A GB 1536540A GB 3713/75 A GB3713/75 A GB 3713/75A GB 371375 A GB371375 A GB 371375A GB 1536540 A GB1536540 A GB 1536540A
Authority
GB
United Kingdom
Prior art keywords
alignment
speed
deviation
wheels
vehicle
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
GB3713/75A
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.)
ELECTRICAL RES ASS Ltd
Original Assignee
ELECTRICAL RES ASS 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 ELECTRICAL RES ASS Ltd filed Critical ELECTRICAL RES ASS Ltd
Priority to GB3713/75A priority Critical patent/GB1536540A/en
Publication of GB1536540A publication Critical patent/GB1536540A/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
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0212—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
    • G05D1/0223—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory involving speed control of the vehicle
    • 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
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0259—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means
    • G05D1/0265—Control of position or course in two dimensions specially adapted to land vehicles using magnetic or electromagnetic means using buried wires

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

1536540 Automatic control ELECTRICAL RESEARCH ASSOCIATION Ltd 7 April 1976 [28 Jan 1975] 3713/75 Heading G3N The speed of a vehicle (industrial truck or tractor) which is automatically guided to follow a predetermined path (e.g. a leader cable) is controlled in response to deviations from the path and the alignment of guidance wheels with respect to a datum position, the speed being decreased when the deviation exceeds a predetermined value and increased when the wheel alignment is within predetermined limits. The deviation and alignment signals are analogue voltages which are compared with adjustable threshold values in differential amplifiers, Fig. 2 (not shown). The arrangement is such that an excessive deviation switches an unspecified speed controller to a "slow" condition, the guidance system (not described in detail) turns the steerable wheels to correct the deviation, and straightens them when this has been done, and, when the straight alignment of the wheels has been maintained for, say 2 seconds, the controller is switched to "fast". A separate timer prevents speed changes at closer than 7 second intervals. The alignment system maintains the vehicle at slow speed when a curve is negotiated. The control circuits are fully described.
GB3713/75A 1976-04-07 1976-04-07 Speed control of guided vehicles Expired GB1536540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3713/75A GB1536540A (en) 1976-04-07 1976-04-07 Speed control of guided vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3713/75A GB1536540A (en) 1976-04-07 1976-04-07 Speed control of guided vehicles

Publications (1)

Publication Number Publication Date
GB1536540A true GB1536540A (en) 1978-12-20

Family

ID=9763556

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3713/75A Expired GB1536540A (en) 1976-04-07 1976-04-07 Speed control of guided vehicles

Country Status (1)

Country Link
GB (1) GB1536540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110383197A (en) * 2018-01-23 2019-10-25 深圳市大疆创新科技有限公司 Mobile platform method for limiting speed and unit and recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110383197A (en) * 2018-01-23 2019-10-25 深圳市大疆创新科技有限公司 Mobile platform method for limiting speed and unit and recording medium

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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