公开(公告)号：US3706017A

公开(公告)日：1972-12-12

申请号：US3706017D

申请日：1970-07-15

Applicant: DOVER CORP CANADA LTD

Inventor： GINGRICH JOHN A

IPC: B66B1/30 ,  H02P7/34

CPC classification number: B66B1/30 ,  H02P7/347

Abstract: A SYSTEM FOR ACCURATELY CONTROLLING THE SPEED OF A D.C. MOTOR WHICH IS POWERED BY THE GENERATOR OF A MOTORGENERATOR SET. THE FLUX IN THE GENERATOR IS CONTROLLED BY A GENERATOR FIELD SUPPLIED BY A SWITCHING BRIDGE AMPLIFIER. THE VOLTAGE INDUCED IN AN EXTRA GENERATOR FIELD IS INTEGRATED TO OBTAIN A MEASUREMENT OF THE CHANGE OF THE FLUX IN THE GENERATOR AND THIS MEASUREMENT IS USED TO CONTROL THE SWITCHING OF THE BRIDGE AMPLIFIER. THE CONTROL IS EFFECTED IN SUCH A WAY THAT THE RATE OF CHANGE OF FLUX IN THE GENERATOR IS MADE PROPORTIONAL TO THE ERROR BETWEEN THE PATTERN SPEED AND THE MEASURED SPEED OF THE D.C. MOTOR.

D R A W I N G

公开(公告)号：US3561571A

公开(公告)日：1971-02-09

申请号：US3561571D

申请日：1966-11-04

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: B66B1/16 ,  B66B1/20 ,  B66B1/24 ,  B66B1/34

CPC classification number: B66B1/3484 ,  B66B1/2458 ,  B66B2201/102 ,  B66B2201/211 ,  B66B2201/222 ,  B66B2201/226 ,  B66B2201/231 ,  B66B2201/241 ,  B66B2201/243 ,  B66B2201/303 ,  B66B2201/403

Abstract: The disclosure relates to an elevator group supervisory control system in which bits of information, as to registered demands for service, position of the cars, and the degree of availability of the cars relative to the number of calls for service each is capable of answering without undue delay, are successively and repetitively scanned to control the respective movement of the cars.

公开(公告)号：US3371747A

公开(公告)日：1968-03-05

申请号：US37460864

申请日：1964-06-12

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A ,  HOLLAND GORDON A

IPC: B66B1/20

CPC classification number: B66B1/20

公开(公告)号：CA1099038A

公开(公告)日：1981-04-07

申请号：CA288471

申请日：1977-10-06

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: B60L3/08 ,  B61L3/00 ,  B66B1/16 ,  B66B1/24 ,  B66B1/30

Abstract: A system for producing a velocity pattern for a vehicle such as an elevator car which must be brought smoothly to a stop accurately aligned with a desired one of a number of stations. The distance between the vehicle and the station at which a stop is required (target distance) is expressed in digital form, and is processed electronically to produce a velocity pattern which results in constant deceleration of the vehicle during the entire approach except for an initial build-up to, and a final tapering off from, the constant deceleration. A single adjustment for deceleration rate automatically adjusts the slowdown distance to the correct value to suit the selected deceleration rate. The calculation is done repetitively at high speed to minimize any lag between the diminishing target distance and the corresponding velocity pattern. Further adjustments permit control of the final tapering off from constant deceleration, with the slowdown distance automatically adjusted to suit these adjustments also.

公开(公告)号：CA891124A

公开(公告)日：1972-01-18

申请号：CA891124D

Applicant: DOVER CORP CANADA LTD

Inventor： GINGRICH JOHN A

公开(公告)号：CA1177530A

公开(公告)日：1984-11-06

申请号：CA394896

申请日：1982-01-26

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: H01F7/18

Abstract: 24385 An arrangement for controlling the rate of motion of a plunger of a D.C. electro-magnetic solenoid employs a solid state switching device connected in series with the primary winding of the solenoid. The rate of change of the flux in the primary winding induces a voltage in a sensing winding, which voltage is integrated and used to control the "on" time of the switching device so as to control the flux in the main coil.

公开(公告)号：CA1115865A

公开(公告)日：1982-01-05

申请号：CA365293

申请日：1980-11-21

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: B66B1/30

Abstract: A system for producing a velocity pattern for a vehicle such as an elevator car which must be brought smoothly to a stop accurately aligned with a desired one of a number of stations. The distance between the vehicle and the station at which a stop is required (target distance) is expressed in digital form, and is processed electronically to produce a velocity pattern which results in constant deceleration of the vehicle during the entire approach except for an initial build-up to, and a final tapering off from, the constant deceleration. A single adjustment for deceleration rate automatically adjusts the slowdown distance to the correct value to suit the selected deceleration rate. The calculation is done repetitively at high speed to minimize any lag between the diminishing target distance and the corresponding velocity pattern. Further adjustments permit control of the final tapering off from constant deceleration, with the slowdown distance automatically adjusted to suite these adjustments also.

公开(公告)号：CA940195A

公开(公告)日：1974-01-15

申请号：CA87936

申请日：1970-07-10

Applicant: DOVER CORP CANADA LIMITED

Inventor： GINGRICH JOHN A

公开(公告)号：CA1115866A

公开(公告)日：1982-01-05

申请号：CA365294

申请日：1980-11-21

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: B66B1/30

Abstract: A system for producing a velocity pattern for a vehicle such as an elevator car which must be brought smoothly to a stop accurately aligned with a desired one of a number of stations. The distance between the vehicle and the station at which a stop is required (target distance) is expressed in digital form, and is processed electronically to produce a velocity pattern which results in constant deceleration of the vehicle during the entire approach except for an initial build-up to, and a final tapering off from, the constant deceleration. A single adjustment for deceleration rate automatically adjusts the slowdown distance to the correct value to suit the selected deceleration rate. The calculation is done repetitively at high speed to minimize any lag between the diminishing target distance and the corresponding velocity pattern. Further adjustments permit control of the final tapering off from constant deceleration, with the slowdown distance automatically adjusted to suite these adjustments also.

公开(公告)号：CA1078979A

公开(公告)日：1980-06-03

申请号：CA281842

申请日：1977-06-30

Applicant: DOVER CORP

Inventor： GINGRICH JOHN A

IPC: B66B1/34 ,  G01D5/20 ,  G01D5/251 ,  H03M1/22 ,  B66B3/02

Abstract: An elevator control system us ing vertically elongated single-turn loops of wire movable with the car past a vertical column of stationary coils of wire, one at each floor, which are de-energized one at a time repetitively at high speed. The sudden collapse of magnetic flux from a coil induces a pulse into the loops if the car is adjacent. Each loop has one or more twists so that the polarities of the induced pulses vary in a predictable manner over the vertical length of the loops. When pulses are induced in the loops, the unique combinations of positive and negative pulses defines the quantized distance between the car floor and the building floor whose coil caused the pulses. The quantized distance between the car floor and any desired target floor in the building is computed repetitively by adding the pertinent floor heights, as stored in a memory, to the reading obtained from the loops.