GB1315589A - Control apparatus for an elevator car - Google Patents

Control apparatus for an elevator car

Info

Publication number
GB1315589A
GB1315589A GB265071A GB265071A GB1315589A GB 1315589 A GB1315589 A GB 1315589A GB 265071 A GB265071 A GB 265071A GB 265071 A GB265071 A GB 265071A GB 1315589 A GB1315589 A GB 1315589A
Authority
GB
United Kingdom
Prior art keywords
speed
lift
braking
pattern
motor
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
GB265071A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority claimed from JP45005060A external-priority patent/JPS5114779B1/ja
Priority claimed from JP45017042A external-priority patent/JPS5025227B1/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1315589A publication Critical patent/GB1315589A/en
Expired legal-status Critical Current

Links

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
    • 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
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/302—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor for energy saving
    • 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
    • B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
    • B66B1/308—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor with AC powered elevator drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Elevator Control (AREA)

Abstract

1315589 Automatic speed control HITACHI Ltd 19 Jan 1971 [21 Jan 1970 2 March 1970] 2650/71 Heading G3R [Also in Division H2] Control apparatus for a lift comprises high speed and low speed motor systems involving three phase motors HM and LM respectively. The high speed motor is used for accelerating the lift from rest up to a constant travel speed in three steps, each step comprising shorting out three of the resistors Rs using relay contacts. The low speed motor car be switched to either the three phase inputs U.V.W. for normal operation to a rectifier circuit VR which supplies a DC voltage for braking the motor so as to decelerate the lift, the magnitude of the braking current being controlled by the difference on speed between a speed pattern and the actual speed of the lift as determined by a tachogenerator TG. The speed pattern, Fig.3C, is produced by the superimposition of the output of a pattern generator PG, producing a smooth curve by integrating the pulses produced by a series of relays, one associated with each flow, which are deenergized as the lift passes, and the output of an auxiliary pattern generator which produces an impulse waveform. The braking system is inoperative until the lift passes a deceleration starting point at which time the high speed motor is cut off and the low speed motor connected to the rectifier circuit VR. The purpose of the impulse part of the speed pattern is to ensure that when the braking circuit is connected, the pattern speed exceeds the lift speed so that no sudden braking force is applied, the decay on the impulse causing a gradual drop of the pattern speed below the lift speed and hence a smooth onset of braking. When the lift has been slowed to a low speed an electromagentic brake MB is operated to bring the lift to a standstill. In a further embodiment the speed pattern may suddenly be reduced to zero at a time prior to the lift stopping so as to increase the braking during the very low speed period of operation of the motor. The two motors may be replaced by a single multiple motor connected so as to be operable with either 4 poles or 16 poles, to affect high speed and low speed operation respectively, the DC voltage being applied to the 16 pole arrangement to effect braking. Safety cut outs are provided to operate the electromagnetic brake should the lift approach the top or bottom of the duct. Also the high speed motor cuts out if the lift speed exceeds a predetermined limit.
GB265071A 1970-01-21 1971-01-19 Control apparatus for an elevator car Expired GB1315589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP45005060A JPS5114779B1 (en) 1970-01-21 1970-01-21
JP45017042A JPS5025227B1 (en) 1970-03-02 1970-03-02

Publications (1)

Publication Number Publication Date
GB1315589A true GB1315589A (en) 1973-05-02

Family

ID=26338940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB265071A Expired GB1315589A (en) 1970-01-21 1971-01-19 Control apparatus for an elevator car

Country Status (6)

Country Link
US (1) US3687235A (en)
CA (1) CA933686A (en)
CH (1) CH533062A (en)
DE (1) DE2102583C3 (en)
FR (1) FR2075803A5 (en)
GB (1) GB1315589A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575885B2 (en) * 1979-05-22 1988-08-11 Inventio Ag Improvements in or relating to elevator system
DE3907853A1 (en) * 1989-03-10 1990-09-13 Man Ghh Krantechnik DRIVE ARRANGEMENT, ESPECIALLY FOR A HOIST

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805133A (en) * 1972-08-14 1974-04-16 Hitachi Ltd Control system for induction motors
US3876918A (en) * 1972-08-14 1975-04-08 Hitachi Ltd Electric motor controlling system
JPS5417219B2 (en) * 1973-01-24 1979-06-28
JPS50118445A (en) * 1974-03-08 1975-09-17
FR2313300A1 (en) * 1975-03-20 1976-12-31 Otis Ascinter ELEVATOR MOTOR CONTROL SYSTEM
JPS5813467B2 (en) * 1975-04-21 1983-03-14 株式会社日立製作所 AC elevator level adjustment device
US4122919A (en) * 1976-03-23 1978-10-31 Mitsubishi Denki Kabushiki Kaisha Speed control apparatus for AC elevator
US4213517A (en) * 1978-07-06 1980-07-22 Fujitec Co., Ltd. Elevator control system
FI64925C (en) * 1979-08-28 1984-02-10 Elevator Gmbh FOERFARANDE FOER FININSTAELLNING AV VAEXELSTROEMSHISS
SE445444B (en) * 1979-12-28 1986-06-23 Elevator Gmbh CONTROL SYSTEM FOR ELECTRODYNAMIC AND MECHANICAL BRAKING OF POWER DRIVES FOR PERSONAL AND PRODUCT LIFTS
FI64255C (en) * 1981-03-04 1983-10-10 Elevator Gmbh HASTIGHETSREGLERINGSSYSTEM FOER KORTSLUTNINGSMOTOR
JPH07102949B2 (en) * 1989-09-28 1995-11-08 三菱電機株式会社 Elevator braking system
KR100396811B1 (en) * 1999-01-25 2003-09-03 미쓰비시덴키 가부시키가이샤 Elevator brake control device
US6756749B2 (en) * 2002-01-23 2004-06-29 Hewlett-Packard Development Company, L.P. Motion control system including both a stepper motor and a DC motor
CN1325361C (en) * 2002-09-27 2007-07-11 三菱电机株式会社 Brake controller of elevator
FI121882B (en) * 2009-11-02 2011-05-31 Kone Corp Brake device, electric drive and lift system
WO2017127720A1 (en) * 2016-01-23 2017-07-27 Kollmorgen Corporation Method and apparatus for power-saving, fail-safe control of an electromechanical brake

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733393A (en) * 1956-01-31 Dynamic braking hoist control
US2804943A (en) * 1954-05-24 1957-09-03 Inventio Ag Device on elevators for stopping exactly at floor level
US3319142A (en) * 1965-05-07 1967-05-09 Smith Corp A O Drive control including plural a.c. motors coupled to same shaft with d.c. braking
US3460014A (en) * 1965-10-06 1969-08-05 Hitachi Ltd Speed control system for directly coupled induction motors of different synchronous speed

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575885B2 (en) * 1979-05-22 1988-08-11 Inventio Ag Improvements in or relating to elevator system
DE3907853A1 (en) * 1989-03-10 1990-09-13 Man Ghh Krantechnik DRIVE ARRANGEMENT, ESPECIALLY FOR A HOIST
US4994725A (en) * 1989-03-10 1991-02-19 Man Ghh Krantechnik Gmbh Drive arrangement, especially for a hoist mechanism

Also Published As

Publication number Publication date
CH533062A (en) 1973-01-31
DE2102583C3 (en) 1980-05-14
FR2075803A5 (en) 1971-10-08
DE2102583B2 (en) 1979-08-23
CA933686A (en) 1973-09-11
US3687235A (en) 1972-08-29
DE2102583A1 (en) 1971-09-09

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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