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1. 发明授权

EP0501661B1 Linear actuator 失效
标题翻译：线性驱动器
公开(公告)号：EP0501661B1
公开(公告)日：1997-12-10
申请号：EP92301336.1
申请日：1992-02-19
申请人： HITACHI, LTD.
发明人： Nihei, Hideki , Kawamata, Syooichi , Horie, Hideaki , Morinaga, Shigeki , Mutoh, Nobuyoshi
IPC分类号： H02K41/02
CPC分类号： H02K41/031 , G11B7/08582 , G11B21/083 , H02P6/006 , H02P6/34

2. 发明公开

EP0553664A3 Optical disk apparatus 失效
标题翻译：光盘设备
公开(公告)号：EP0553664A3
公开(公告)日：1995-03-08
申请号：EP93100561.5
申请日：1993-01-15
申请人： HITACHI, LTD.
发明人： Kanazawa, Hiroshi , Tajima, Fumio , Naganuma, Ryoichi , Mutoh, Nobuyoshi , Takahashi, Tadashi , Nihei, Hideki , Tanae, Shunichi , Horie, Hideaki , Kawamata, Syooichi
IPC分类号： G11B25/04 , G11B17/34 , G11B19/20 , G11B19/28 , G11B17/028 , G11B19/04 , G11B7/085 , G11B33/08 , H02K21/14 , H02K21/24
CPC分类号： G11B17/0282 , G11B7/08505 , G11B7/08582 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/043 , G11B33/08 , H02K21/14 , H02K21/24
摘要： A portable-type disk apparatus for a 3.5-inch or less optical disk implemented in a thin, light-weight and miniaturized structure having a vibration-withstanding capability. An optical head assembly is disposed stationarily while an optical disk (5) and a spindle motor (6) for rotating the optical disk (5) are disposed movably in a diametrical direction of the optical disk. The spindle motor (6) is constituted by a brushless motor of a substantially semi-circular form in cross section and having a laterally truncated portion. The optical head assembly including an optical head and a laser circuit is disposed at the side of the laterally truncated portion.
摘要翻译：一种用于3.5英寸或更小的光盘的便携式盘装置，其实现为具有耐振动能力的薄，轻，小型化的结构。当光盘（5）和用于旋转光盘（5）的主轴电动机（6）沿光盘的直径方向移动地设置时，光学头组件被静止地设置。主轴电动机（6）由横截面为大致半圆形的无刷电动机构成，具有横截面。包括光学头和激光电路的光学头组件设置在横截面的一侧。

3. 发明公开

EP0553664A2 Optical disk apparatus 失效
标题翻译：光盘装置
公开(公告)号：EP0553664A2
公开(公告)日：1993-08-04
申请号：EP93100561.5
申请日：1993-01-15
申请人： HITACHI, LTD.
发明人： Kanazawa, Hiroshi , Tajima, Fumio , Naganuma, Ryoichi , Mutoh, Nobuyoshi , Takahashi, Tadashi , Nihei, Hideki , Tanae, Shunichi , Horie, Hideaki , Kawamata, Syooichi
IPC分类号： G11B25/04 , G11B17/34 , G11B19/20 , G11B19/28 , G11B17/028 , G11B19/04 , G11B7/085 , G11B33/08 , H02K21/14 , H02K21/24
CPC分类号： G11B17/0282 , G11B7/08505 , G11B7/08582 , G11B17/028 , G11B17/34 , G11B19/04 , G11B19/20 , G11B19/28 , G11B25/043 , G11B33/08 , H02K21/14 , H02K21/24
摘要： A portable-type disk apparatus for a 3.5-inch or less optical disk implemented in a thin, light-weight and miniaturized structure having a vibration-withstanding capability. An optical head assembly is disposed stationarily while an optical disk (5) and a spindle motor (6) for rotating the optical disk (5) are disposed movably in a diametrical direction of the optical disk. The spindle motor (6) is constituted by a brushless motor of a substantially semi-circular form in cross section and having a laterally truncated portion. The optical head assembly including an optical head and a laser circuit is disposed at the side of the laterally truncated portion.
摘要翻译：一种用于3.5英寸或更小的光盘的便携式磁盘装置，以薄型，轻型和小型化结构实现，具有抗振能力。一个光学头组件被静止地设置，而用于旋转光盘（5）的光盘（5）和主轴电动机（6）被设置成在光盘的径向上可移动。主轴电动机（6）由横截面为大致半圆形且具有横向截头部分的无刷电动机构成。包括光学头和激光电路的光学头组件设置在横向截头部分的侧面。

4. 发明公开

EP0371442A1 Control method of pulse width modulation inverter and pulse width modulation inverter system 失效
标题翻译：用于使用脉冲宽度调制和逆变器系统与脉冲宽度调制逆变器控制方法。
公开(公告)号：EP0371442A1
公开(公告)日：1990-06-06
申请号：EP89121902.4
申请日：1989-11-28
申请人： HITACHI, LTD.
发明人： Mutoh, Nobuyoshi , Sakai, Keijiro , Fujii, Hiroshi , Nantoh, Kenji
IPC分类号： H02P7/628
CPC分类号： H02P27/08 , H02M7/53873 , H02M2007/53876 , H02P23/0077
摘要： In spatial vector control of a pulse width modulation (PWM) inverter (40) adapted for variable speed drive of an induction motor (50), a difference vector ( ẽ(n)) between magnetic flux vectors (φ̃ (n), φ̃ (n-1 ))occurring during adjacent sampling periods is generated by synthesizing a zero vector (V 0 , Ṽ 7 ) and voltage vectors ( Ṽ 1 - Ṽ 6 ) in such a manner that a resultant voltage vector always includes as component a minimum unit of zero vector or voltage vector, whereby even when the angular speed of rotation of the magnetic flux changes, the switching frequency of the PWM inverter is prevented from decreasing and the current ripple is reduced.
摘要翻译：在脉冲宽度调制（PWM）逆变器的空间矢量控制（40），适于（磁通矢量之间的感应电动机（50），的差矢量（@（n））的@（n）的变速驱动器@（ N-1））中的相邻采样周期发生的是由寻找的方式合成一个零矢量（@ 0，@ 7）和电压矢量（@ 1相似@ 6）产生做所得的电压矢量总是作为组分包括最小单元的零矢量或矢量电压，从而即使当的磁通量的变化的旋转的角速度，所述PWM逆变器的开关频率从降低和电流波动减小防止。

5. 发明公开

EP0351783A2 PWM inverter apparatus 失效
标题翻译： Pulsbreitenmodulierte Wechselrichter-Einrichtung。
公开(公告)号：EP0351783A2
公开(公告)日：1990-01-24
申请号：EP89113159.1
申请日：1989-07-18
申请人： HITACHI, LTD.
发明人： Mutoh, Nobuyoshi , Sakai, Keijiro , Ueda, Akiteru , Fujii, Hiroshi
IPC分类号： H02M7/529
CPC分类号： H02M7/529 , H02P21/141
摘要： Disclosed is a PWM inverter apparatus used for driving an a.c. motor, comprising: an inverter including an output part connected to the a.c. motor and switching elements on-off controlled by a PWM signal; a part (10) for receiving, at an interval of a given sampling period, status command information specifying a desired status of a vector of a rotating magnetic flux in the a.c. motor; a part (10) for predicting, on the basis of at least the status command information received at each sampling time, the status of the vector of the rotating magnetic flux which will be produced at next sampling time; a part (22) for calculating the difference between the status of the vector of the rotating magnetic flux specified by the status command information received at current sampling time and the predicted status of the vector of the rotating magnetic flux which will be produced at next sampling time; a part (21, 23, 24) for synthesizing the difference vector using ones selected from among a plurality of predetermined reference voltage vectors; and a part (30) for generating a PWM signal for controlling the switching elements of the inverter so as to produce the selected reference voltage vectors.
摘要翻译：公开了用于驱动交流电的PWM逆变器装置。电动机，包括：逆变器，包括连接到所述交流电的输出部分。电机和开关元件通断由PWM信号控制; 用于以给定采样周期的间隔接收指定所述a.c.中旋转磁通的向量的期望状态的状态命令信息的部分（10）。发动机; 至少基于每个采样时刻接收到的状态命令信息来预测在下一个采样时刻产生的旋转磁通矢量的状态的部分（10）用于计算由当前采样时间接收到的状态指令信息指定的旋转磁通矢量的状态与将在下一次采样时产生的旋转磁通矢量的预测状态之间的差的部分（22）时间; 用于使用从多个预定参考电压矢量中选择的一个来选择差矢量的部分（21,23,24）; 以及用于产生用于控制逆变器的开关元件以产生所选择的参考电压矢量的PWM信号的部分（30）。

6. 发明公开

EP0140348A1 Method and apparatus for controlling PWM inverter 失效
标题翻译： Verfahren und Vorrichtung zum Steuern eines Pulsdauermodulationswechselrichters。
公开(公告)号：EP0140348A1
公开(公告)日：1985-05-08
申请号：EP84112921.6
申请日：1984-10-26
申请人： HITACHI, LTD.
发明人： Mutoh, Nobuyoshi , Sakai, Keijiro , Hattori, Motonobu , Nagato, Yuichiro
IPC分类号： H02M7/5387
CPC分类号： H02M7/53873
摘要： A method and an apparatus for producing a pulse width modulating signal to be used for operation of a PWM inverter wherein a modulating wave (U) of a sinusoidal waveform corresponding to the desired AC output voltage of the inverter is sampled at selected periodical time intervals (τ c ) to obtain a level of the modulating wave at each sampling point and the interval (Tu, Tv, Tw) is arithmetically determined between each sampling time point (A or C) and a time point (C or D) which appears between that sampling point and the next sampling point and at which time point a virtual triangular waveform (X) which has positive and negative peaks of a predetermined amplitude occurring alternately at the selected periodical time interval (τ c ), takes the same level as the sampled level of the modulating wave. On the basis of the time interval (Tu, Tv, Tw), the PWM signal (Eu, Ev, Ew) is produced.
摘要翻译：一种用于产生用于PWM逆变器的操作的脉宽调制信号的方法和装置，其中对应于逆变器的期望AC输出电压的正弦波形的调制波（U）以选定的周期时间间隔进行采样（ τc）以获得每个采样点处的调制波的电平，并且在每个采样时间点（A或C）与时间点（C或D）之间算术确定间隔（Tu，Tv，Tw）该采样点和下一个采样点，并且在该时间点，具有以选定周期时间间隔（τc）交替出现的预定幅度的正和负峰值的虚拟三角波形（X）采取与采样相同的电平调制波的电平。基于时间间隔（Tu，Tv，Tw），产生PWM信号（Eu，Ev，Ew）。

7. 发明授权

EP0622264B1 Electric vehicle drive system and drive method 失效
标题翻译：驱动系统和电动车辆的驱动方法
公开(公告)号：EP0622264B1
公开(公告)日：1998-11-11
申请号：EP94106581.5
申请日：1994-04-27
申请人： Hitachi, Ltd.
发明人： Mutoh, Nobuyoshi , Masaki, Ryoso , Miyazaki, Taizou , Tajima, Fumio , Ohmae, Tsutomu
IPC分类号： B60L11/18
CPC分类号： B60L15/20 , B60L11/18 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/7275
摘要： The object of the present invention is to provide an electric drive system which ensures effective generation of torque from the start to the maximum speed, and extended cruising distance and upgraded running performances. The drive system according to the present invention is characterized in that, in an electric vehicle to be driven by the wheels which are driven by the rotary output of two or more motors (5,6), said two or more motors (5,6) comprise at least two different types of motors, and the system is provided with the control means (10) to adjust the share of the vehicle driving force to be generated by each of said motors in conformity to the running state of said vehicle. These two or more motors (5,6) comprise a combination of a low speed drive motor (5) and high speed drive motor (6), and a highly efficient motor is used as said low speed motor (5), while a motor having a greater capacity and greater base speed than said low speed drive motor (5) is used as the high speed drive motor (6). The share of the driving force of said vehicle is controlled by the control means such that up to the maximum torque is generated by said low speed drive motor (5), with the remaining torque generated by said high speed drive motor (6).

8. 发明授权

EP0371442B1 Control method of pulse width modulation inverter and pulse width modulation inverter system 失效
标题翻译：用于使用脉冲宽度调制和逆变器系统与脉冲宽度调制逆变器控制方法。
公开(公告)号：EP0371442B1
公开(公告)日：1995-02-01
申请号：EP89121902.4
申请日：1989-11-28
申请人： HITACHI, LTD.
发明人： Mutoh, Nobuyoshi , Sakai, Keijiro , Fujii, Hiroshi , Nantoh, Kenji
IPC分类号： H02P7/628
CPC分类号： H02P27/08 , H02M7/53873 , H02M2007/53876 , H02P23/0077

9. 发明公开

EP0622264A2 Electric vehicle drive system and drive method 失效
标题翻译：驱动系统和电动车辆的驱动方法。
公开(公告)号：EP0622264A2
公开(公告)日：1994-11-02
申请号：EP94106581.5
申请日：1994-04-27
申请人： HITACHI, LTD.
发明人： Mutoh, Nobuyoshi , Masaki, Ryoso , Miyazaki, Taizou , Tajima, Fumio , Ohmae, Tsutomu
IPC分类号： B60L11/18
CPC分类号： B60L15/20 , B60L11/18 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/7275
摘要： The object of the present invention is to provide an electric drive system which ensures effective generation of torque from the start to the maximum speed, and extended cruising distance and upgraded running performances. The drive system according to the present invention is characterized in that, in an electric vehicle to be driven by the wheels which are driven by the rotary output of two or more motors (5,6), said two or more motors (5,6) comprise at least two different types of motors, and the system is provided with the control means (10) to adjust the share of the vehicle driving force to be generated by each of said motors in conformity to the running state of said vehicle. These two or more motors (5,6) comprise a combination of a low speed drive motor (5) and high speed drive motor (6), and a highly efficient motor is used as said low speed motor (5), while a motor having a greater capacity and greater base speed than said low speed drive motor (5) is used as the high speed drive motor (6). The share of the driving force of said vehicle is controlled by the control means such that up to the maximum torque is generated by said low speed drive motor (5), with the remaining torque generated by said high speed drive motor (6).

10. 发明授权

EP0358989B1 Position or speed sensing apparatus 失效
标题翻译：速度或位置测量仪器。
公开(公告)号：EP0358989B1
公开(公告)日：1994-07-20
申请号：EP89115552.5
申请日：1989-08-23
申请人： HITACHI, LTD.
发明人： Sugiura, Yasuyuki , Oue, Rika , Miyashita, Kunio , Nagase, Hiroshi , Mutoh, Nobuyoshi , Kobayashi, Sumio , Sugai, Hiroshi
IPC分类号： G01D5/246 , G01P3/48
CPC分类号： G01P3/489 , G01D5/24409 , G01D5/246

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