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GB1160312A - Driving Systems for Lift Doors - Google Patents

Driving Systems for Lift Doors

Info

Publication number
GB1160312A
GB1160312A GB893066A GB893066A GB1160312A GB 1160312 A GB1160312 A GB 1160312A GB 893066 A GB893066 A GB 893066A GB 893066 A GB893066 A GB 893066A GB 1160312 A GB1160312 A GB 1160312A
Authority
GB
United Kingdom
Prior art keywords
transistor
motor
output
signal
transformer
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
GB893066A
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.)
TREVOR JOHN RIDDLESTONE
TK Access Solutions Ltd
Original Assignee
TREVOR JOHN RIDDLESTONE
Hammond and Champness 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 TREVOR JOHN RIDDLESTONE, Hammond and Champness Ltd filed Critical TREVOR JOHN RIDDLESTONE
Priority to GB893066A priority Critical patent/GB1160312A/en
Publication of GB1160312A publication Critical patent/GB1160312A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43072—Position controlled opening profile
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45242—Door, panel, window operation, opening, closing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Linear Motors (AREA)

Abstract

1,160,312. Control of D.C. motors. HAMMOND & CHAMPNESS Ltd., and T. J. RIDDLESTONE. 20 Feb., 1967 [1 March, 1966], No. 8930/66. Heading H2J. [Also in Divisions E2 and G3] A shunt-wound motor 1a, which drives a liftdoor in a constant speed ratio, has its speed regulated continuously in accordance with the position of the door by means of transformer 4 whose coupling is varied by a cam-operated armature. The motor is supplied from a source of unsmoothed full-wave rectified current through silicon-controlled rectifier 14, the firing- angle of which is determined by the output from the transformer 4. This output is rectified and smoothed to control transistors T 1 , T 2 , the latter receiving a signal from resistor 20 representing the back-E.M.F. of the motor so that the amplitude of the output from transistor T 2 varies both in dependence on the signal from transistor T 1 and on the motor speed. The combined signal is amplified by transistor T 3 and then applied to the base of transistor T 4 having capacitor 22 in its emitter circuit. The signal passed on by the transistor T 4 controls a bistable circuit comprising transistors T 5 , T 6 , associated with transistors T 7 , T 8 , which effect inversion and amplification. The cam may be shaped to produce from the transformer 4 a simple harmonic output relative to the linear travel of the door, and the speed of the motor will vary in a similar manner with the shift of the firing-angle of the rectifier 14 during the door travel.
GB893066A 1966-03-01 1966-03-01 Driving Systems for Lift Doors Expired GB1160312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB893066A GB1160312A (en) 1966-03-01 1966-03-01 Driving Systems for Lift Doors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB893066A GB1160312A (en) 1966-03-01 1966-03-01 Driving Systems for Lift Doors

Publications (1)

Publication Number Publication Date
GB1160312A true GB1160312A (en) 1969-08-06

Family

ID=9862070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB893066A Expired GB1160312A (en) 1966-03-01 1966-03-01 Driving Systems for Lift Doors

Country Status (1)

Country Link
GB (1) GB1160312A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502773A2 (en) * 1991-03-07 1992-09-09 Otis Elevator Company Motor control device, in particular for driving elevator doors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0502773A2 (en) * 1991-03-07 1992-09-09 Otis Elevator Company Motor control device, in particular for driving elevator doors
EP0502773A3 (en) * 1991-03-07 1993-05-12 Otis Elevator Company Motor control device, in particular for driving elevator doors

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees