US3747710A - Distance slowdown control for elevator systems - Google Patents

Distance slowdown control for elevator systems Download PDF

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Publication number
US3747710A
US3747710A US00254119A US3747710DA US3747710A US 3747710 A US3747710 A US 3747710A US 00254119 A US00254119 A US 00254119A US 3747710D A US3747710D A US 3747710DA US 3747710 A US3747710 A US 3747710A
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US
United States
Prior art keywords
count
counting
distance
predetermined
converter
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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 - Lifetime
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US00254119A
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English (en)
Inventor
C Winkler
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.)
Westinghouse Electric Corp
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Westinghouse Electric Corp
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Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
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Publication of US3747710A publication Critical patent/US3747710A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
    • B66B1/285—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical with the use of a speed pattern generator

Definitions

  • ABSTRACT Distance slowdown control for an elevator system which provides a predetermined portion of a speed pattern used by the motor control of the elevator system.
  • the portion of the speed pattern provided by the distance slowdown control is responsive to the distance to go to the floor at which the elevator car is going to stop.
  • the transfer point At a predetermined distance from the floor, termed the transfer point, the speed pattern is transferred from the distance slowdown control to another control.
  • the distance slowdown control is automatically calibrated during each run of the elevator car for the specific distance to go from the transfer point to the floor. When the elevator car reaches the transfer point, the calibrated voltage from the distance slowdown control will be at the correct magnitude for transfer to the other control.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
US00254119A 1972-05-17 1972-05-17 Distance slowdown control for elevator systems Expired - Lifetime US3747710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25411972A 1972-05-17 1972-05-17

Publications (1)

Publication Number Publication Date
US3747710A true US3747710A (en) 1973-07-24

Family

ID=22962998

Family Applications (1)

Application Number Title Priority Date Filing Date
US00254119A Expired - Lifetime US3747710A (en) 1972-05-17 1972-05-17 Distance slowdown control for elevator systems

Country Status (5)

Country Link
US (1) US3747710A (enExample)
BE (1) BE799640A (enExample)
CA (1) CA985808A (enExample)
DE (1) DE2325096A1 (enExample)
FR (1) FR2185004B1 (enExample)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155426A (en) * 1978-05-05 1979-05-22 Westinghouse Electric Corp. Digital speed pattern generator
US4193478A (en) * 1977-04-26 1980-03-18 Elevator Industries Elevator control system and method
US4220221A (en) * 1977-02-02 1980-09-02 Dover Corporation Method and apparatus for producing a speed pattern for an elevator car or similar vehicle
US4261439A (en) * 1979-09-10 1981-04-14 Westinghouse Electric Corp. Elevator system
US4331220A (en) * 1980-11-04 1982-05-25 Westinghouse Electric Corp. Elevator system
US4463833A (en) * 1982-08-19 1984-08-07 Westinghouse Electric Corp. Elevator system
US4515246A (en) * 1982-02-23 1985-05-07 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling the arrival of an elevator cage at an elevator floor
US4527662A (en) * 1983-04-01 1985-07-09 Otis Elevator Company Elevator speed control
US5509505A (en) * 1993-09-29 1996-04-23 Otis Elevator Company Arrangement for detecting elevator car position
US20040200671A1 (en) * 2001-09-28 2004-10-14 Takuo Kugiya Elevator device
US20060175142A1 (en) * 2003-02-24 2006-08-10 Flynn Michael P Elevator with variable drag for car and counterweight

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3021501A1 (de) * 1980-06-07 1981-12-17 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Verfahren und vorrichtung zur regelung eines positionierantriebs, insbesondere fuer transportkabinen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3570630A (en) * 1969-02-03 1971-03-16 Otis Elevator Co Landing selector apparatus
US3589474A (en) * 1969-05-07 1971-06-29 Westinghouse Electric Corp Digital pattern generator for motor speed control

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3570630A (en) * 1969-02-03 1971-03-16 Otis Elevator Co Landing selector apparatus
US3589474A (en) * 1969-05-07 1971-06-29 Westinghouse Electric Corp Digital pattern generator for motor speed control

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220221A (en) * 1977-02-02 1980-09-02 Dover Corporation Method and apparatus for producing a speed pattern for an elevator car or similar vehicle
US4193478A (en) * 1977-04-26 1980-03-18 Elevator Industries Elevator control system and method
US4155426A (en) * 1978-05-05 1979-05-22 Westinghouse Electric Corp. Digital speed pattern generator
US4261439A (en) * 1979-09-10 1981-04-14 Westinghouse Electric Corp. Elevator system
US4331220A (en) * 1980-11-04 1982-05-25 Westinghouse Electric Corp. Elevator system
US4515246A (en) * 1982-02-23 1985-05-07 Mitsubishi Denki Kabushiki Kaisha Apparatus for controlling the arrival of an elevator cage at an elevator floor
US4463833A (en) * 1982-08-19 1984-08-07 Westinghouse Electric Corp. Elevator system
US4527662A (en) * 1983-04-01 1985-07-09 Otis Elevator Company Elevator speed control
US5509505A (en) * 1993-09-29 1996-04-23 Otis Elevator Company Arrangement for detecting elevator car position
US20040200671A1 (en) * 2001-09-28 2004-10-14 Takuo Kugiya Elevator device
US7228943B2 (en) * 2001-09-28 2007-06-12 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus with position correction for overspeed detection
US20060175142A1 (en) * 2003-02-24 2006-08-10 Flynn Michael P Elevator with variable drag for car and counterweight
US7377363B2 (en) * 2003-02-24 2008-05-27 Otis Elevator Company Elevator with variable drag for car and counterweight

Also Published As

Publication number Publication date
DE2325096A1 (de) 1973-12-06
FR2185004A1 (enExample) 1973-12-28
FR2185004B1 (enExample) 1978-04-21
BE799640A (fr) 1973-11-19
CA985808A (en) 1976-03-16

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