公开(公告)号：KR840002366B1

公开(公告)日：1984-12-21

申请号：KR810001577

申请日：1981-05-07

Applicant: HITACHI LTD

Inventor： SHIMA SEIYA ,  ANDO TAKEKI ,  INABA HIROMI ,  KUROHA HIROAKI ,  KUROSAWA TOSHIAKI ,  SAKAI YOSHIO

IPC: G05F1/45 ,  H02M7/06 ,  H02M7/12 ,  H02M7/155 ,  H02M7/162

公开(公告)号：US3627080A

公开(公告)日：1971-12-14

申请号：US3627080D

申请日：1969-09-15

Applicant: HITACHI LTD

Inventor： YUMINAKA TAKEO ,  KUROSAWA TOSHIAKI

IPC: B65G1/00 ,  B65G1/137 ,  B66B1/28 ,  B66B1/30 ,  E04H6/18 ,  H02P29/00

CPC classification number: B66B1/30 ,  B66B1/285 ,  Y10S388/90 ,  Y10S388/904 ,  Y10S388/91

Abstract: A speed control system for elevators, wherein there is provided a speed pattern means SO for providing a constant speed pattern voltage during the accelerating operation and a deceleration pattern voltage which decreases in a stepped manner whenever the elevator cage arrives at each one of a plurality of present deceleration points during the decelerating operation, the output of the said means SO is supplied to a comparator CP having positive and negative saturation characteristics, the output of the comparator CP is integrated by an integrator I, and the output of the integrator is negatively fed back to the input side of the comparator CP and at the same time to the elevator speed control system, and wherein during the accelerating operation the output of the speed pattern means SO is supplied to the comparator, and during the decelerating operation, a correction signal corresponding to the difference between the output of the said means SO and a voltage corresponding to the actual elevator speed is generated to be supplied to the integrator, thereby correcting the output of the said integrator in accordance with the actual elevator speed.

公开(公告)号：HK140996A

公开(公告)日：1996-08-09

申请号：HK140996

申请日：1996-08-01

Applicant: HITACHI LTD ,  HITACHI BUILDING SYST ENG

Inventor： OMIYA AKIHIRO ,  INABA HIROMI ,  MIYOSHI KAN ,  SATO TAICHI ,  MEGURO TOSHIO ,  SHIGETA MASAYUKI ,  YAMAKI MASAMITSU ,  KUROSAWA TOSHIAKI ,  NISHIKAWA MITSUYO

IPC: B66B1/24 ,  B66B1/06 ,  G05B13/04

公开(公告)号：CA1216686A

公开(公告)日：1987-01-13

申请号：CA410751

申请日：1982-09-03

Applicant: HITACHI LTD

Inventor： INABA HIROMI ,  SHIMA SEIYA ,  ANDO TAKEKI ,  KUROSAWA TOSHIAKI ,  KATAYAMA YASUNORI ,  HATAKEYAMA TAKANOBU ,  HOKARI SADAO

IPC: B66B1/24 ,  B66B1/16 ,  B66B1/28

Abstract: : An elevator controller uses an acceleration command signal that has as its initial value a start shock compensation torque that will offset the unbalance torque caused at the time of starting. From the completion of elevator car acceleration to the start of deceleration, the acceleration command is gradually increased or decreased to control the motor to provide a smoother motion of the car than has hitherto been possible. After the commencement of car deceleration a velocity command is issued that decreases with reducing distance between the car and the destination floor.

公开(公告)号：GB2116786B

公开(公告)日：1985-09-04

申请号：GB8306345

申请日：1983-03-08

Applicant: HITACHI LTD

Inventor： ANDO TAKEKI ,  KUROSAWA TOSHIAKI ,  KUROHA HIROAKI ,  SAKAI YOSHIO

IPC: H02M7/12 ,  H02M7/155 ,  H02M7/162 ,  H02M7/48 ,  H02P7/292

Abstract: An AC-to-DC power conversion by connecting GTO elements to the positive arms of a three-phase full wave bridge circuit and by repeating the mode of supplying power to a load from an AC power supply by controlling the GTO elements, and the mode of making the current flowing to the load flow back at the time of interruption of the power supply mode, when the power supply mode and the flow-back mode are switched over, overvoltage at the time of the switching is suppressed by simultaneously causing the power supply and flow-back currents to flow.

公开(公告)号：DE2247866A1

公开(公告)日：1973-04-19

申请号：DE2247866

申请日：1972-09-29

Applicant: HITACHI LTD

Inventor： HAYASE SHUNICHIRO ,  SHIMA SEIYA ,  ANDO TAKEKI ,  KUROHA HIROAKI ,  KUROSAWA TOSHIAKI

IPC: B66B1/24 ,  B66B1/28 ,  B66B1/30 ,  H02P7/34 ,  H02P5/26

公开(公告)号：GB2271865B

公开(公告)日：1996-03-13

申请号：GB9321121

申请日：1993-10-13

Applicant: HITACHI LTD ,  HITACHI BUILDING SYST ENG

Inventor： OMIYA AKIHIRO ,  INABA HIROMI ,  MIYOSHI KAN ,  SATO TAICHI ,  MEGURO TOSHIO ,  SHIGETA MASAYUKI ,  YAMAKI MASAMITSU ,  KUROSAWA TOSHIAKI ,  NISHIKAWA MITSUYO

IPC: B66B1/24 ,  B66B1/06 ,  G05B13/04

公开(公告)号：GB2271865A

公开(公告)日：1994-04-27

申请号：GB9321121

申请日：1993-10-13

Applicant: HITACHI LTD ,  HITACHI BUILDING SYST ENG

Inventor： OMIYA AKIHIRO ,  INABA HIROMI ,  MIYOSHI KAN ,  SATO TAICHI ,  MEGURO TOSHIO ,  SHIGETA MASAYUKI ,  YAMKI MASAMITSU ,  KUROSAWA TOSHIAKI ,  NISHIKAWA MITSUYO

IPC: B66B1/24 ,  B66B1/06 ,  G05B13/04

Abstract: In an elevator system, an elevator model system (15) is provided in a speed control system (2, 4, 5, 7, 10, 11, 22, 24), and an electric motor (6) is controlled in accordance with a vibration suppressing signal decided on the basis of the output of this model, thereby extracting a vibration component of an elevator cage and performing the vibration suppressing control by using this ripple signal, so that comfortable riding with less vertical vibration can be realized. The upper input shown to comparator may be replaced by the output of a second model system, or both options may be present with selection of one according to cage position.

公开(公告)号：GB2204196B

公开(公告)日：1991-02-06

申请号：GB8809372

申请日：1988-04-20

Applicant: HITACHI LTD

Inventor： ANDO TAKEKI ,  NAKAMURA KIYOSHI ,  MINE TOSHISUKE ,  INABA HIROMI ,  KUROSAWA TOSHIAKI ,  NAKAZATO MASAO ,  SAKAI YOSHIO

IPC: H02H7/12 ,  H02H7/122 ,  H02M5/458 ,  H02M7/48

Abstract: In a current source power converting apparatus, in which an AC to DC converter is coupled to a DC to AC inverter through a DC reactor, two energy absorbing devices are coupled to DC terminals of the converter and the inverter, respectively, whereby there is formed a circulation circuit for circulating a current through the two energy absorbing devices and the DC reactor, when a voltage, which is higher than a predetermined value, is induced by an inductance of the DC reactor.

公开(公告)号：HK10488A

公开(公告)日：1988-02-12

申请号：HK10488

申请日：1988-02-04

Applicant: HITACHI LTD

Inventor： INABA HIROMI ,  NAKASHIMA HAJIME ,  KIWAKI HISAKATSU ,  UEDA AKITERU ,  ANDO TAKEKI ,  KUROSAWA TOSHIAKI ,  SAKAI YOSHIO

IPC: B66B1/24 ,  B66B1/16 ,  B66B1/40 ,  B66B1/44 ,  G05B23/02 ,  B66B1/36 ,  B66B5/00

Abstract: In an elevator wherein an elevator cage is repeatedly run among a plurality of floors by controlling a cage driving motor in accordance with a velocity command; a floor arrival error involved when the elevator cage has arrived at the floor is detected, and the velocity command for the subsequent operation is corrected in accordance with the floor arrival error, thereby to enhance the floor arrival precision.