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71. 发明专利

JPH07215130A ON-VEHICLE CAMERA SWITCHING DEVICE 失效
公开(公告)号：JPH07215130A
公开(公告)日：1995-08-15
申请号：JP1023694
申请日：1994-02-01
申请人： HITACHI LTD
发明人： TAKAHASHI JUNICHI , HATASHITA HIROSHI , NAGASHIMA TOSHIO
IPC分类号： B60R1/00 , H04N7/18
摘要： PURPOSE:To easily recognize the surrounding condition during the driving of an automobile. CONSTITUTION:Image signal output from cameras 1-4, which are provided at each part of an automobile, is selected by a switching control means 8 for outputting the control signal on the basis of the information from driving condition detecting means such as an winker direction detecting means 5, a handle direction detecting means 6, an.indication input means 7, and displayed in an image display means 9. With this structure, a driver of an automobile can easily recognize a required image in the image display means among the surrounding images obtained by the cameras 1-4, and the driver can obtain a help for safely driving an automobile.

72. 发明专利

JPH06209589A AUTOMATIC ADJUSTING METHOD FOR VECTOR CONTROL EQUIPMENT 失效
公开(公告)号：JPH06209589A
公开(公告)日：1994-07-26
申请号：JP21813393
申请日：1993-08-10
申请人： HITACHI LTD
发明人： OKUYAMA TOSHIAKI , FUJIMOTO NOBORU , MATSUI TAKAYUKI , TAKAHASHI JUNICHI
IPC分类号： G01M1/10 , H02P21/00 , H02P21/22 , H02P23/07 , H02P23/16 , H02P27/04 , H02P5/408
摘要： PURPOSE:To make it possible to prevent the occurrence of control operation error by measuring the moment of inertia of a rotor and a load equipment of a motor based on the variation in rotating speed and a torque current component of a motor during adjustable speed operation and by automatically setting control constants of a vector control equipment. CONSTITUTION:After setting an exciting inductance L1 and a secondary time- constant T2, rotating angular velocity omegar is raised and accelerated to a predetermined value. Then, the rotating speed is accelerated by DELTAomegara, thereafter, decelerated by DELTAomegardC=-DELTArhoed, a torque current command it* during this period is taken in, it during acceleration and deceleration is cumulatively processed, this cumulative value is divided by DELTAomegara and DELTAomegard, and moment of inertia J is measured and processed. Based on this measured result, its control constant is automatically set. By doing this, the moment of inertia J can be measured with a high accuracy and an optimum control constant can be set by removing the effect of load torque.

73. 发明专利

JPH04289798A DRIVING METHOD AND DEVICE FOR AC MOTOR AT THE TIME OF FAILURE OF CONVERTER 失效
公开(公告)号：JPH04289798A
公开(公告)日：1992-10-14
申请号：JP5458191
申请日：1991-03-19
申请人： HITACHI LTD
发明人： TAKAHASHI JUNICHI , HORIUCHI HIDEKAZU
IPC分类号： H02P27/16 , H02P21/00 , H02P21/22 , H02P23/00 , H02P23/07 , H02P23/16 , H02P25/022 , H02P25/10 , H02P27/02 , H02P27/06
摘要： PURPOSE:To suppress fluctuation of speed by switching to driving through other sound phase, upon failure of one phase converter driving an AC motor, thereby quickly generating same torque as that prevailing before failure. CONSTITUTION:When a faulty phase converter 1U is stopped, neutral points of a motor 2 and a converter 1 are connected each other, current phases of other sound phase converters 1V, 1W are modified in predetermined relation and then the firing angle is controlled according to thus modified AC current command and AC voltage command to sustain operation of the motor 2, a command for compensating the zero-phase current component flowing through the motor 2 during faulty operation is added to the AC voltage command (23) in order to compensate for the influence onto the vector control. Furthermore, terminal voltage of the motor 2 is detected until the firing angle control resumes and thus detected terminal voltage is employed, as the AC voltage command, in the control of firing angle(21, 22) thus matching the voltage phases of the converter 1 and the motor 2 and suppressing the surge current. At the same time, a predetermined current is fed quickly to the motor thus suppressing fluctuation of speed.

74. 发明专利

JPH0336964A MULTIPLE INVERTER APPARATUS 失效
公开(公告)号：JPH0336964A
公开(公告)日：1991-02-18
申请号：JP16665789
申请日：1989-06-30
申请人： HITACHI LTD
发明人： MATSUI TAKAYUKI , OKUYAMA TOSHIAKI , TOBARI KAZUAKI , KUBOTA YUZURU , TAKAHASHI JUNICHI
IPC分类号： H02M7/483 , H02M7/497
摘要： PURPOSE:To reduce harmonic components by setting the phases of both carrier signals on the positive and negative sides to the same phase. CONSTITUTION:A parallel multiple inverter 1 converts DC voltage into AC at three levels, i.e., at positive, zero and negative levels, to supply an AC motor 2 with a three-phase AC voltage. This inverter apparatus 1 is composed of inverters 3, 4, parallel reactors 5U-5W with a center tap, etc. Further, the inverter apparatus 1 is equipped with carrier signal oscillator 9, adders 10, 11, constant calculators 12, 13, comparators 14, 15, etc., for the purpose of controlling a pulse width modulation, and is controlled so that an output voltage becomes zero when output signals of both comparators 14, 15 differ from each other.

75. 发明专利

JPH027276B2 失效
公开(公告)号：JPH027276B2
公开(公告)日：1990-02-16
申请号：JP11515282
申请日：1982-07-01
申请人： HITACHI LTD
发明人： OOMAE TSUTOMU , MATSUDA TOSHIHIKO , OOHASHI MAKOTO , TAKAHASHI JUNICHI
IPC分类号： H02P29/00 , G01P3/481 , G01P3/489

76. 发明专利

JPS6321433B2 失效
公开(公告)号：JPS6321433B2
公开(公告)日：1988-05-06
申请号：JP354680
申请日：1980-01-18
申请人： HITACHI LTD
发明人： TAKAHASHI JUNICHI
IPC分类号： H02P6/06 , H02P6/08 , H02P6/28 , H02P6/32

77. 发明专利

JPS6321430B2 失效
公开(公告)号：JPS6321430B2
公开(公告)日：1988-05-06
申请号：JP498782
申请日：1982-01-18
申请人： HITACHI LTD
发明人： OOMAE TSUTOMU , MATSUDA TOSHIHIKO , TACHIKAWA MAKOTO , TAKAHASHI JUNICHI
IPC分类号： H02P7/292 , H02P29/00

78. 发明专利

JPS6356170A CONTROL OF CYCLO-CONVERTER 失效
公开(公告)号：JPS6356170A
公开(公告)日：1988-03-10
申请号：JP19663686
申请日：1986-08-22
申请人： HITACHI LTD
发明人： SAKEGAWA TAKASHI , TAKAHASHI JUNICHI
IPC分类号： H02M5/27
摘要： PURPOSE:To improve the power factor of a power source, by a method wherein the reference value of the voltage of an A.C. motor is reduced in the link of a detecting value when a power source voltage is detected and is reduced while a torque current reference signal is increased. CONSTITUTION:The primary coil 123 of a thyristor transformer 1 is connected to a 3-phase A.C. power source, secondary fourth coils 11-31 are connected to cyclo converters 411-431 and the outputs thereof are supplied to a 3-phase induction motor 5. The speed feedback signal Wr of the motor 5 is outputted to a vector operating block 17 through a comparator 9 and a controller 10 whereby a torque current It and magnetic flux current Im are controlled independently and respectively. In this case, a 3-phase voltage transformer 22, a 3-phase all wave rectifier 23 and the block 24 of saturation factor are provided to stop the function thereof when a power source voltage is higher than a given value. The output of the saturation factor 24 becomes the reference of a quadrature axis voltage and is added to an adder 11 as a divisor, further, is added to multipliers 201-203 for compensating a gain.

79. 发明专利

JPS6162392A Vector controller of induction motor 失效
标题翻译：感应电机矢量控制器
公开(公告)号：JPS6162392A
公开(公告)日：1986-03-31
申请号：JP18060084
申请日：1984-08-31
申请人： Hitachi Ltd
发明人： TAKAHASHI JUNICHI , OKUYAMA TOSHIAKI
IPC分类号： H02P21/00 , H02P27/04
CPC分类号： H02P21/34
摘要： PURPOSE:To obtain a controller capable of eliminating the regulation of vector control means by measuring various impedance of a motor on the basis of a voltage detected value before starting, and automatically setting the control constants based on the result. CONSTITUTION:A motor constant automatic setter 20 is first operated by a signal of measurement starting timing, or motor switching timing or a main circuit closing timing to store the measured result control constant set value in a memory cell 21. Then, motor starting/stopping process 18 is performed and, when a start timing is taken to start, a motor variable speed control calculator 19 calculates by using the control constant obtained by the setter 20 and stored in the cell 21.
摘要翻译：目的：通过根据启动前的电压检测值测量电机的各种阻抗，获取能够消除矢量控制装置调节的控制器，并根据结果自动设定控制常数。构成：电动机常数自动设定器20首先通过测量开始时刻或电动机切换定时的信号或主电路关闭定时来操作，以将测量结果控制常数设定值存储在存储单元21中。然后，电动机起动/停止执行过程18，并且当开始起动定时时，电机变速控制计算器19通过使用由设定器20获得并存储在单元21中的控制常数进行计算。

80. 发明专利

JP2014072922A Information writing device and information writing method 审中-公开
标题翻译：信息撰写设备和信息写作方法
公开(公告)号：JP2014072922A
公开(公告)日：2014-04-21
申请号：JP2012214932
申请日：2012-09-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKANO TETSUO , MIYATA KATSUYA , MATSUSHIMA KIYOTO , TAKAHASHI JUNICHI
IPC分类号： B60L15/40 , B61L3/12 , B61L23/14
CPC分类号： Y02T90/16
摘要： PROBLEM TO BE SOLVED: To provide an information writing device which can prevent false telegram information from being written when writing the telegram information to a ground communication device.SOLUTION: An information writing device is at least provided with: a positioning part 112 for acquiring a current position; an information storage part 108 for storing telegram information to be written to a ground communication device 120 and a position that allows writing as write information every ground communication device 120; a telegram selection part 109 for reading out of the information storage part 108 and outputting write information of the ground communication device 120 instructed by an operator; transmission means for transmitting the write information; and a control unit 114 which compares the current position acquired by the positioning part 112 with a position allowing write in the write information outputted by the telegram selection part 109 and, when the current position matches the position allowing write or the current position is within a prescribed range from the position allowing write, outputs the write information to the transmission means. By transmitting telegram information from the transmission means, telegram information is written to the ground communication device 120.
摘要翻译：要解决的问题：提供一种信息写入装置，其能够防止在将电报信息写入地面通信装置时写入错误的电报信息。解决方案：信息写入装置至少具有：定位部112，用于获取当前位置; 用于存储要写入地面通信装置120的电报信息的信息存储部分108和允许每个地面通信装置120写入作为写入信息的位置; 电报选择部分109，用于读出信息存储部分108并输出操作者指示的地面通信装置120的写入信息; 发送装置，用于发送写入信息; 以及控制单元114，其将定位部分112获取的当前位置与允许写入由电报选择部分109输出的写入信息的位置进行比较，并且当当前位置与允许写入或当前位置匹配的位置在一个从允许写入的位置的规定范围，将写入信息输出到发送装置。通过从发送装置发送报文信息，将电报信息写入地面通信装置120。

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