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1. 发明专利

JPH10114473A DIRECT CURRENT ELEVATOR CONTROLLER 失效
公开(公告)号：JPH10114473A
公开(公告)日：1998-05-06
申请号：JP27014896
申请日：1996-10-11
申请人： HITACHI BUILDING SYST CO LTD , HITACHI ELEVATOR ENG
发明人： FUKUDA SATORU , ANDO TAKEYOSHI , KUROSAWA TOSHIAKI , ATSUZAWA TERUYOSHI , HATSUTORI SHIGENORI , KANEKO HIRONORI
IPC分类号： B66B1/30 , H02P7/03 , H02P7/292 , H02P5/172
摘要： PROBLEM TO BE SOLVED: To suppress a current skip by varying an integral value of an electric current deviation so that armature current is prevented from flowing when a power converter is switched to a power operation or to a regenerative operation. SOLUTION: In transfer from power running to regeneration, a one-shot circuit 16b detects a drop (↓) of a switching command 12b on the receipt of a change in logic of the switching command from '1' to '0', and the logic '0' is output. By means of the '0' signal, a switch SW2 in an analog circuit 16c is closed, and an optionally set voltage and a charge current decided by a limiting resistor 16e are fed to an integration circuit 15. The integration circuit 15 is constructed of an operation amplifier 15a and an integration capacitor 15b, which is charged by output current from a current skip suppressing circuit 16. This charge is finished at the set limit in the one-shot circuit 16b. In this process, the charged integral voltage is set to the value at which no armature current flows even if travel is carried out at any speed.

2. 发明专利

JP2673994B2 失效
公开(公告)号：JP2673994B2
公开(公告)日：1997-11-05
申请号：JP18269390
申请日：1990-07-12
IPC分类号： H02M7/155 , G05B13/02 , H02M7/12 , H02P7/06 , H02P7/292 , H02P5/172 , H02P5/06

3. 发明专利

JPH09154290A MOTOR SPEED CONTROL 失效
公开(公告)号：JPH09154290A
公开(公告)日：1997-06-10
申请号：JP30935195
申请日：1995-11-28
申请人： NISSHIN STEEL CO LTD
发明人： MATSUNAGA MASAO
IPC分类号： H02P7/292 , H02P29/00 , H02P5/00 , H02P5/172
摘要： PROBLEM TO BE SOLVED: To automatically change the gain of a controller to eliminate delay of control by changing polarity of a current command value via a first compensation amplifier to feed back to a speed controller and then changing polarity of voltage command value via a second compensation amplifier to feed back to a current controller. SOLUTION: A part of current command value 3 from a PI control speed controller 1 is input to a first compensation amplifier 20 for the purpose of compensation and thereafter it is input to a speed controller 1 through the feedback route. Moreover, a part of the voltage command value 5 from an I control type current controller 4 is input to a second compensation amplifier 21 for the purpose of compensation and thereafter it is input to the current controller 4 via the feedback route. In the first and second compensation amplifiers 20, 21, the input/output characteristic is perfectly polarity-converted to variably change the output depending on an input. The current and voltage command values 3, 5 are polarity-converted in the compensation amplifiers 20, 21 for increase of amplitude of the output to form an automatic tuning circuit 22. Thereby, automatic control without any delay of control can be realized.

4. 发明专利

JPH0932673A FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0932673A
公开(公告)日：1997-02-04
申请号：JP17012996
申请日：1996-06-28
申请人： WALBRO CORP
发明人： JIYON AARU FUOOGIYU , JIYOOJI ETSUCHI BUTSUCHI
IPC分类号： B60L3/00 , F02D41/30 , F02D45/00 , F02M37/08 , H02M3/155 , H02P7/292 , H02P5/172
摘要： PROBLEM TO BE SOLVED: To increase power applied to a fuel pump motor in the case, particularly, of improper utilizable voltage, in a fuel supply system for an internal combustion engine. SOLUTION: A fuel supply system 10 for an internal combustion engine is provided with a fuel pump 12 driven by an electric motor 14 and an electronic control circuit 24 applying power from a DC power source 22 to the motor 14. In the electronic control circuit 24, in response to a voltage level in the DC power source, when its obtained voltage is decreased to a prescribed level, applied power to the electric motor 14 is automatically increased. In a suitable example, the electric motor 14 is a DC motor, the electronic control circuit 24 takes a form of DC-DC converter including a transformed and a rectifier circuit connecting this transformer to the electric motor 14. When voltage obtained in the DC power source is improper, a power switch applies an AC current to the transformer, and power applied to the motor through the rectifier circuit is increased.

5. 发明专利

JPH07114553B2 失效
公开(公告)号：JPH07114553B2
公开(公告)日：1995-12-06
申请号：JP1399388
申请日：1988-01-25
IPC分类号： H02P7/292 , H02P5/172

6. 实用新型

JPH0644319Y2 失效
公开(公告)号：JPH0644319Y2
公开(公告)日：1994-11-14
申请号：JP7617090
申请日：1990-07-19
IPC分类号： H02P7/281 , H02P7/298 , H02P5/00 , H02P5/172

7. 发明专利

JPH0630583A SPEED CONTROL DEVICE FOR MOTOR 失效
公开(公告)号：JPH0630583A
公开(公告)日：1994-02-04
申请号：JP14185192
申请日：1992-06-03
申请人： FUJI ELECTRIC CO LTD
发明人： UEDA HIDETOSHI
IPC分类号： H02P7/292 , H02P5/172
摘要： PURPOSE:To make it possible to change the current command value in response to the fluctuation in motor load before the variation in motor speed and to control the fluctuation in speed caused by that in load by employing either constitution that a limiter outputs by changing over either of set values in steady- and unsteady-state torque setting means. CONSTITUTION:The speed control device is provided with a limiter 20 for limiting the current command value output from a speed control means 13. It is also provided with an steady-state torque setting means 23 for setting the output from the limiter 20 to a torque value corresponding to the steady-state load of a motor 4; and an unsteady-state torque setting means 24 for setting the output to a torque value corresponding to the unsteady-state load of the motor 4. In addition the control device is provided with a load state detection means for judging whether the load of the motor 4 is in steady state or unsteady state; and a switching means 22 which switches the steady-state torque setting means 23 and the unsteady-state torque setting means 24 according to the detected state of the load. This makes possible controlling the fluctuation in motor speed in response to that in load without adding a compensator, which l is expensive and complicates circuits.

8. 实用新型

JPS6291595U 失效
公开(公告)号：JPS6291595U
公开(公告)日：1987-06-11
申请号：JP18235685
申请日：1985-11-27
IPC分类号： H02P7/292 , H02P5/172

9. 实用新型

JPS6145753Y2 失效
公开(公告)号：JPS6145753Y2
公开(公告)日：1986-12-23
申请号：JP12843180
申请日：1980-09-11
IPC分类号： H02P7/295 , H02P5/172

10. 实用新型

JPS6111996Y2 JPS6111996Y2 - 失效
公开(公告)号：JPS6111996Y2
公开(公告)日：1986-04-15
申请号：JP16251882
申请日：1982-10-27
IPC分类号： H02P7/292 , H02P5/172

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