GB1436892A - Elevator system - Google Patents

Elevator system

Info

Publication number
GB1436892A
GB1436892A GB2248673A GB2248673A GB1436892A GB 1436892 A GB1436892 A GB 1436892A GB 2248673 A GB2248673 A GB 2248673A GB 2248673 A GB2248673 A GB 2248673A GB 1436892 A GB1436892 A GB 1436892A
Authority
GB
United Kingdom
Prior art keywords
winding
motor
acceleration
armature
signal
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
GB2248673A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1436892A publication Critical patent/GB1436892A/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
    • B66B1/30—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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
    • G01P15/165—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal for measuring angular accelerations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/90—Specific system operational feature
    • Y10S388/904—Stored velocity profile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/917—Thyristor or scr

Abstract

1436892 Automatic control of lifts WESTINGHOUSE ELECTRIC CORP 11 May 1973 [24 May 1972] 22486/73 Heading G3N [ Also in Divisions G 1 and H 1] The acceleration of a D.C. motor is determined by measuring the rate of change of armature current, using a transformer 60 Fig. 1 whose core 68 is wound with a first winding 62 carrying the armature current of the motor 12, a second winding 64 carrying a fixed current produced by the armature voltage, and a third winding 66 acting as a pick-up winding. The circuit of the second winding 64 is such that the ripple flux it produces in core 68 is equal and opposite to that produced by winding 62. Hence the voltage VST induced in the third winding 66 is due to the change in back emf of the armature 14 and is therefore proportional to motor acceleration, and substantially free of ripple. Constructional details of transformer 60 are described, wherein winding 62 is effectively less than one turn. The acceleration signal may alternatively be derived by differentiating the output from a hall plate element. The motor 12 is used in an elevator system, the speed command signal V SP being supplied by a program 50 and compared with the actual speed signal VT derived from a tachogenerator 52 to produce an error signal VE to which the acceleration signal VST is added to provide an anti-bunting facility.
GB2248673A 1972-05-24 1973-05-11 Elevator system Expired GB1436892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25631872A 1972-05-24 1972-05-24

Publications (1)

Publication Number Publication Date
GB1436892A true GB1436892A (en) 1976-05-26

Family

ID=22971794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2248673A Expired GB1436892A (en) 1972-05-24 1973-05-11 Elevator system

Country Status (6)

Country Link
US (1) US3749204A (en)
JP (1) JPS5724311B2 (en)
BE (1) BE799905A (en)
CA (1) CA986242A (en)
DE (1) DE2325596A1 (en)
GB (1) GB1436892A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950684A (en) * 1974-05-29 1976-04-13 Westinghouse Electric Corporation Direct current motor speed control apparatus
US5227704A (en) * 1974-06-24 1993-07-13 General Electric Company Motor controls, refrigeration systems and methods of motor operation and control
US5125067A (en) * 1974-06-24 1992-06-23 General Electric Company Motor controls, refrigeration systems and methods of motor operation and control
US4030570A (en) * 1975-12-10 1977-06-21 Westinghouse Electric Corporation Elevator system
JPS537050A (en) * 1976-07-06 1978-01-23 Mitsubishi Electric Corp Device for controlling elevator
JPS5314784U (en) * 1976-07-20 1978-02-07
JPS54113148A (en) * 1978-02-24 1979-09-04 Mitsubishi Electric Corp Elevator speed controlling system
DE3412538A1 (en) * 1984-04-04 1985-10-31 Jungheinrich Unternehmensverwaltung Kg, 2000 Hamburg Method for monitoring a DC motor having constant excitation, and a circuit arrangement for carrying out the method
AT388631B (en) * 1985-04-16 1989-08-10 Siemens Ag Oesterreich DEVICE FOR CONTROLLING THE FIELD CURRENT OF DC MOTORS
US6300738B1 (en) * 1999-09-30 2001-10-09 Rockwell Automation Technologies, Inc. Method and apparatus for generating reference values for a motion control loop in an industrial control system

Also Published As

Publication number Publication date
AU5544773A (en) 1974-11-14
BE799905A (en) 1973-11-23
DE2325596A1 (en) 1973-12-06
JPS5724311B2 (en) 1982-05-24
US3749204A (en) 1973-07-31
CA986242A (en) 1976-03-23
JPS4942040A (en) 1974-04-20

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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