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1. 发明专利

JPS5795104A POWER FEEDING UNIT FOR LINEAR MOTOR 失效
公开(公告)号：JPS5795104A
公开(公告)日：1982-06-12
申请号：JP16808880
申请日：1980-12-01
申请人： HITACHI LTD
发明人： ISAKA MASAYOSHI , NAKAMURA KIYOSHI , OOKUBO HIROSHI
IPC分类号： B60L13/03 , B60L13/00 , H02P25/06
摘要： PURPOSE:To realize a high reliability linear motor feeding unit by a method wherein driving coils and section switches corresponding to said coils are divided into a plurality of groups track-wise and second switching means are provided to connect a group to a corresponding feeder. CONSTITUTION:Driving coils LM1-LM42 exemplifiedly numbering 42 are arranged in sequence and section switches SW1-SW42 are provided for alternately connecting each of the driving coils to an electric power converter CC1 or CC2. The first switching means SW1-SW42 are not connected directly to feeders F1 and F2. The driving coils and the first switch means corresponding thereto are divided into seven group track-wise and each of the groups is taken care of by one of the seven groups of the second switching means SW201-SW214 located between the first switching means SW1-SW42 and the feeder F1 or F2. This provides a highly reliable electric power feeding system for a linear motor.

2. 发明专利

JPS56143030A CONTROLLER FOR INEFFECTIVE POWER 失效
公开(公告)号：JPS56143030A
公开(公告)日：1981-11-07
申请号：JP4565380
申请日：1980-04-09
申请人： HITACHI LTD
发明人： ISAKA MASAYOSHI , NAKAMURA KIYOSHI , OOKUBO HIROSHI
IPC分类号： G05F1/70 , H02H7/12 , H02J3/18
摘要： PURPOSE:To suppress the power variation, by detaching the load when a failure is detected in an ineffective power compensator of multiple sections. CONSTITUTION:If thyristor switches T1-T4 and a thyristor Th are in failure due to some cause, it is detected with the thyristor T1-T4 failure detection circuit and the thyristor Th failure detection circuit. These outputs give an output for the open- circuit instructing circuit 20 to open the switch S. Thus, other sound devices like the load F can be protected and adverse effect on other users in the same power system can be prevented.

3. 发明专利

JPS5539684A REACTOR AND ITS MANUFACTURING 失效
公开(公告)号：JPS5539684A
公开(公告)日：1980-03-19
申请号：JP11377078
申请日：1978-09-14
申请人： HITACHI LTD
发明人： YAMAZAKI MASACHIKA , KIWAKI HISAKATSU , OOKUBO HIROSHI
IPC分类号： H01F41/02 , H01F29/14
摘要： PURPOSE:To make a reactor having little exciting current as well as a small loss by means of winding up an annularly wound coil further at least two times or more with a linear or band-shaped magnetic material. CONSTITUTION:To wind an annularly wound iron core round with an output coil 6 as well as a control coil 7 and further to insulate it with an insulating tape. Further to wind round thereon with an annular or belt-shaped magnetic material 5. By doing so, the exciting current to excite the reactor will be reduced and consequently the loss will be diminished, thus improving the performance of a magnetic amplifier as well as miniaturizing it.

4. 发明专利

JPS5255368A MAGNETIC PAHSE SHIFT UNIT 失效
公开(公告)号：JPS5255368A
公开(公告)日：1977-05-06
申请号：JP13042275
申请日：1975-10-31
申请人： HITACHI LTD
发明人： KIWAKI HISAKATSU , OOKUBO HIROSHI , MATSUMOTO GENICHI
IPC分类号： H02M1/08
摘要： PURPOSE:To obtain a magnetic phase shift unit of compact and practical design with reduced cost, in which the output of magnetic phase shifter is extracted via semiconductor amplifier with minimized iron core of the magnetic phase shifter as well as with an extremely reduced coil numberoof the winding.

5. 发明专利

JPS6022561B2 失效
公开(公告)号：JPS6022561B2
公开(公告)日：1985-06-03
申请号：JP17114183
申请日：1983-09-19
申请人： HITACHI LTD
发明人： OOKUBO HIROSHI , ISAKA MASAYOSHI , NAKAMURA KYOSHI
IPC分类号： B60L13/03 , B60L15/00 , B60M7/00 , H02P25/06

6. 发明专利

JPS6050407A RECOGNIZING APPARATUS OF OBJECT 失效
公开(公告)号：JPS6050407A
公开(公告)日：1985-03-20
申请号：JP15976783
申请日：1983-08-30
申请人： HITACHI LTD
发明人： TAKENAGA HIROSHI , TSUBOI NOBUYOSHI , OOKUBO HIROSHI , SUZUKI MASAHITO , KANEZAKI MORIO
IPC分类号： G01S15/88 , G01B17/00 , G01B17/06 , G01B21/00
摘要： PURPOSE:To make it possible to perform high speed processing, by providing a picture processing device and a distance measuring device, separately processing both devices, synthesizing the results, and recognizing a body in three dimensions. CONSTITUTION:An ITV1, a distance measuring ultrasonic wave element 2, a servomotor, which rotates the ITV1 and the ultrasonic wave element 2, a servomotor controlling device 3, a picture processing device 4 which processes the picture taken by the ITV1, and an ultrasonic wave processing device 5, which controls the timing of the emission of the ultrasonic wave from the ultrasonic wave element 2 and obtains a distance from the received ultrasonic wave signal, are provided. A synthesizing apparatus 6 synthesizes the processed results from the picture processing device 4 and the ultrasonic wave processing device 5 and performs three-dimensional recognition. The high-speed, three-dimensional recognition is carried out by the processing device 6.

7. 发明专利

JPS6021473A OBJECT POSITION RECOGNITION EQUIPMENT 失效
公开(公告)号：JPS6021473A
公开(公告)日：1985-02-02
申请号：JP12792183
申请日：1983-07-15
申请人： HITACHI LTD
发明人： SUZUKI MASAHITO , KANEZAKI MORIO , TSUBOI NOBUYOSHI , OOKUBO HIROSHI , TAKENAGA HIROSHI
IPC分类号： G01S15/42 , G01B17/00 , G01S15/14
摘要： PURPOSE:To enable the detection of the number of objects existing in the same direction and the distance to the object with one measurement by receiving and memorizing the required time of receiving a reflected signal from the object within a specified time. CONSTITUTION:As a signal 1 is transmitted from a main control circuit MCC, an ultrasonic transmitter/receiver ULS transmits an ultrasonic wave to objects A-C while a timer PTM starts counting with a CPU. As soon as the ULS receives reflected signals from the nearest object A, the amplified output 3 thereof is compared with a reference value by a comparator circuit COMP to obtain a plurality of square wave signals for the output 4, which is converted into a time range signal 5 via a monostable multivibrator OMC to be applied to the CPU. The CPU takes in the contents of the PTM to determine the distance to the object A to be stored into an RAM. Reflected waves from the objects B and C are received sequentially in a specified time and the same operation is repeated. Thus, based on the contents of the PTM, distances of the respective objects are memorized separately.

8. 发明专利

JPS56130909A DC TRANSFORMER WITH AUXILIARY CURRENT TRANSFORMER 失效
公开(公告)号：JPS56130909A
公开(公告)日：1981-10-14
申请号：JP3275980
申请日：1980-03-17
申请人： HITACHI LTD
发明人： NAKAMURA KIYOSHI , KUROTAKI YOSHIMI , OOKUBO HIROSHI , NANBA YOSHIAKI
IPC分类号： H01F38/40 , H01F40/12
摘要： PURPOSE:To enable the detection of a DC current or the like by arranging a circuit element formed of diodes and current limiting resistors between the secondary coil of a main current transformer and the primary coil of an auxiliary current transformer, thereby reduce the capacities of the current transformers and insulating them from a high voltage circuit. CONSTITUTION:At least two main saturable reactors are provided in a main current transformer 200, one respective terminals of the seconary coils 37, 38 thereof are connected, at least two auxiliary saturable reactors are provided in an auxiliary current transformer 300, one respective terminals of the primary coils 40, 41 thereof are connected, and an AC power source 39 is connected between the connecting point thereof and the connecting point of the secondary coils. Further, a parallel circuit element of current limiting resistors 55, 56 for limiting a current flowing when iron cores 35, 36 are saturated, and diodes 53, 54 for bypassing the current of the current transformer at the time of unsaturated iron cores from the resistors 55, 56 is provided. Thus, it can eliminate the effect of the shorting current so as to reduce the capacity of the current transformers or the like and to insulate them from a high voltage circuit, thereby detecting the DC current or voltage.

9. 发明专利

JPS56129923A FORCED COMMUTATION TYPE CONVERSION DEVICE 失效
公开(公告)号：JPS56129923A
公开(公告)日：1981-10-12
申请号：JP3275880
申请日：1980-03-17
申请人： HITACHI LTD
发明人： OOKUBO HIROSHI , ISAKA MASAYOSHI , NAKAMURA KIYOSHI
IPC分类号： G05F1/455 , G05F1/45
摘要： PURPOSE:To suppress the voltage variance for power supply system, by the switching that the operation is kept with sound conversion devices only when a failure of failure commutation converter is detected, and by the connection of ineffective power compensator to the input side of the conversion devices. CONSTITUTION:The forced commutation type conversion device consists of a power supply conversion devices 2A, 2B controlled with the control angle of delayed phase, forced commutation conversion devices 3A, 3B controlled with the control angle of leading phase, failure detector 100 detecting the failure state of the conversion devices 3A, 3B, and ineffective power compensation circuit Qc cancelling the ineffective power produced at the load 44 at failure. When the failure of forced commutation conversion devices is detected at the device 100, the closing instruction circuit 12 controlling switches SW1, SW2 and switching is made so that the operation is made only with complete conversion device and the compensation circuit Qc is inserted to the AC input side SS. Thus, the voltage variance in the power supply system can be suppressed and continuous operation can be made even with a failure.

10. 发明专利

JPS552375A DETECTOR FOR IDLING 失效
公开(公告)号：JPS552375A
公开(公告)日：1980-01-09
申请号：JP3561979
申请日：1979-03-28
申请人： HITACHI LTD
发明人： KIWAKI HISAKATSU , OOKUBO HIROSHI , KOUNO TOSHIKATSU , YOKOYAMA SHIGEO
IPC分类号： B60L3/10 , H02P5/68
摘要： PURPOSE:To obtain a device capable of decreasing numbers of high-pressure resistive parts and simplifying construction as well as making adjustment or parts interchanging easy by applying a voltage signal for a main motor to a magnetic amplifier through a differentiating circuit after insulating by a D.C. transformer. CONSTITUTION:Voltage for motors M1,M2 are applied to D.C. convertors DCPT1, DCPT2 through resistors R01, R02 respectively. Differentiating circuits R'1.C1, R'2.C2 are connected to the output sides of the D.C. convertors and the outputs thereof are applied to control coils NC1, NC2 for a magnetic amplifier MA. When idling is caused in any one of wheels W1, W2, the voltage of the motor M1, M2 are varied and the variations are transmitted to the control coils NC1, NC2, and thereby, the magnetic amplifier MA which operates a brake B is responsed.

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