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11. 发明专利

JPH0548080B2 失效
公开(公告)号：JPH0548080B2
公开(公告)日：1993-07-20
申请号：JP6362383
申请日：1983-04-13
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： KOBAYASHI SUMIO , NINOMYA JUICHI , TOMITA HIROYUKI , IBORI SATOSHI , IGARASHI SADAYUKI
IPC分类号： H02P27/08 , H02P21/00 , H02P21/04 , H02P21/22 , H02P21/36 , H02P23/00 , H02P23/03 , H02P23/07 , H02P7/62

12. 发明专利

JPH03265483A POLE POSITION DETECTOR, SYNCHRONOUS MOTOR CONTROLLER, INDUCTION MOTOR CONTROLLER AND NUMERICAL DATA EXTRACTING METHOD 失效
公开(公告)号：JPH03265483A
公开(公告)日：1991-11-26
申请号：JP6380490
申请日：1990-03-14
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： SUGIURA YASUYUKI , SUZUKI KATSUNORI , TOMITA HIROYUKI , NAKAGAWA KAZUYUKI
IPC分类号： H02P27/04 , H02P21/00 , H02P21/22 , H02P21/34 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/18 , H02P23/24 , H02P27/08
摘要： PURPOSE:To make it possible to utilize the numerical data stored in a memory effectively for various types of encoders having different number of pulse by a method wherein the encoder multiplies the number of output pulse by a constant according to the specification of the encoder, when the numerical data is extracted from the memory, and the results of multiplication is maintained constant at all times. CONSTITUTION:A constant generator 16 generates a plurality of constants K1-Kn. A constant selector 17 selects a designated constant from the constants K1-Kn and inserts the selected constant into a circuit connected between the output side of a count pulse generator 6 and the input side of a numerical data output circuit 9. When the output from a multiplying circuit 7 is provided to the numerical data output circuit 9, a designated numerical data is extracted from each table depending on the pulse. If the number of output pulse per single time of encoder varies for En1-Enn, number of pulses En1-Enn are obtained and a constant Kn is selected such that En1XK1-Enn-EnnXKn will be equal to N at all times.

13. 发明专利

JPH01119717A ABSOLUTE POSITION DETECTING METHOD USING DOUBLE-SPEED RESOLVER 失效
公开(公告)号：JPH01119717A
公开(公告)日：1989-05-11
申请号：JP27742687
申请日：1987-11-04
申请人： HITACHI LTD
发明人： SAKAI KEIJIRO , MUTO NOBUYOSHI , TOMITA HIROYUKI , CHIBA HIROSHI , UEDA AKITERU
IPC分类号： G05D3/12 , G01B7/00 , G01B7/30 , G01D5/245
摘要： PURPOSE:To detect the absolute position from the mechanical origin with high accu racy, by judging the absolute position of the position detection value of a plural (P) pole logarithmic resolver on the basis of the detection value of a single pole logarith mic resolver. CONSTITUTION:A double-speed resolver 4 is directly connected to an induction machine 1 and constituted of a single pole logarithmic resolver 2 and a P-pole resolver 3. The two-phase exciting signal of the resolver 4 is outputted as an exciting phase theta0 through an exciting circuit 7 by counting the reference clock signal fc of an one-chip microcomputer 5. On the basis of rotary position detection values theta1x, thetapx obtained by latching the phase theta0 on the basis of the zero phases of the output signals of the respective resolvers 2, 3 by latches 91x, 9px and respectively changing within a ranges of 360 deg. and (360/P) deg., the rotary position of the rotor of an electromotor is detected. At this time, on the basis of the dividing number N obtained by dividing the detection value theta1x of the resolver 2 at every arbitrary range and the detection value thetapx of the resolver 3, the absolute position of the rotor is detected. As mentioned above, a position is detected from the detection value thetapx fundamentally but an absolute value is judged from the detection value theta1x.

14. 发明专利

JPS6370310A FREQUENCY DIVIDER FOR MULTIPHASE SIGNAL 失效
公开(公告)号：JPS6370310A
公开(公告)日：1988-03-30
申请号：JP21382886
申请日：1986-09-12
申请人： HITACHI LTD
发明人： TOMITA HIROYUKI , KOBAYASHI SUMIO , SUGAI HIROSHI , TOKASHIKI MUTSUO
IPC分类号： G05D3/12
摘要： PURPOSE:To start frequency division at an optional phase and to prevent the generation of phase shift due to shift of pulses by providing a frequency divider for dividing the frequency of output signals with A and B phase to be used as a servo system with a resetting function. CONSTITUTION:A-phase and B-phase signals outputted from a pulse encoder 12 coupled with a servomotor 11 and having 90 deg. phase difference respectively are received by a receiver circuit 13 in a control circuit and the output of the circuit 13 is inputted to a quadrupling circuit 1 and a speed detecting circuit 14. The input signal is separated into a positive pulse and a reverse pulse with quadrupled frequency. Both pulses are counted by a reversible ring counter 2, initialized by the least common multiple of a frequency dividing ratio to be used and reset by a reset signal 5. The output of the counter 2 selects the address of a ROM3. A frequency dividing ratio required by a user is selected by a frequency dividing ratio setting switch 6 and the output of the switch 6 is applied to a data selector circuit 4. The frequency dividing waveform outputted from the ROM3 is outputted on a required position by the circuit 4 to a driver circuit 15.

15. 发明专利

JPS6281990A CONTROLLER FOR INDUCTION MOTOR 失效
公开(公告)号：JPS6281990A
公开(公告)日：1987-04-15
申请号：JP22007785
申请日：1985-10-04
申请人： HITACHI LTD , HITACHI KEIYO ENG
发明人： IGARASHI SADAYUKI , NINOMIYA JUICHI , MIURA SATOSHI , IKENO SHOJI , TOMITA HIROYUKI
IPC分类号： H02P27/04 , H02P21/00 , H02P21/22 , H02P21/36 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/24 , H02P27/06
摘要： PURPOSE:To conduct regenerative braking up to a value in the vicinity of a low-speed command from a high-speed command, and to prevent the reverse rotation of a motor by detecting the code conversion of primaty angular frequency and interrupting feed. CONSTITUTION:When a forward-rotation command 35 is inputted to a negative- phase detector 37, the detector 37 outputs a signal when an output from an adder 14, primary angular frequency w1, changes to a negative code from a positive code. The output signal is transmitted over an error amplifying circuit 11 and a transistor drive circuit 20. The error amplifying circuit 11 short-circuits and resets an integral element, and brings a torque-current component command it to zero. On the other hand, the transistor drive circuit 20 receives the output signal from the negative-detector 37, brings an output from an inverter 4 as a frequency conversion means to zero and interrupts feed to an induction motor 2.

16. 发明专利

JPS60200172A SPEED DETECTION APPARATUS 失效
公开(公告)号：JPS60200172A
公开(公告)日：1985-10-09
申请号：JP5600284
申请日：1984-03-26
申请人： HITACHI LTD
发明人： SUGAI HIROSHI , SUMIYA TADAAKI , TOMITA HIROYUKI
IPC分类号： G01P3/489
摘要： PURPOSE:To enable the highly accurate detection of a low speed and the speed detection having a high speed and high response, by shortcircuiting a pulse doubling circuit to a bypass circuit by a change-over switch when the pulse number of a pulse generator increases to reach a prescribed value. CONSTITUTION:A change-over switch 7 is provided between a second pulse doubling circuit 3 and a counter 4 while a second bypass circuit 9 for shortcircuiting the second pulse doubling circuit 3 by the change-over of the change-over switch 7 and a first bypass circuit 8 for simultaneously shortcircuiting a first pulse doubling circit 2 and the second pulse doubling circuit 3 are provided. When the count number of the counter 4 approaches a prescribed value, a monitor apparatus 6 opens between the terminals (b), (d) of the change-over switch 7 on the basis of the order of an operation circuit 5 and brings the terminals (c), (d) to a continuity state. By this mechanism, highly accurate detection of a low speed and speed detection having a high speed and high response can be performed.

17. 发明专利

JPS59174763A Detecting device of revolution speed and position of rotating body 失效
标题翻译：检测旋转速度和转动体位置的装置
公开(公告)号：JPS59174763A
公开(公告)日：1984-10-03
申请号：JP4880583
申请日：1983-03-25
申请人： Hitachi Ltd
发明人： KADOYA TADAAKI , SUGAI HIROSHI , NINOMIYA JIYUICHI , TOMITA HIROYUKI , HANADA TAKESHI
IPC分类号： G01P3/42 , G01B21/22 , G01D3/08 , G01D5/244 , G01D5/245 , G01P3/489
CPC分类号： G01D3/08 , G01P3/489
摘要： PURPOSE:To detect an abnormal condition on the speed detector side and allow a controlling apparatus to process and respond without inflicting any load on the controlling apparatus side, by adding a self-diagonizing function representing a 3-state parformance of a line-driver output in a revolution speed and position detecting sensor itself. CONSTITUTION:In case when a pulse input is in a normal condition, output of an exclusive OR circuits 38, 39 are delivered on an H-level. However, in case when, as shown in Fig. (a), an input pulse of B-phase remains on the H-level (or on an L- level), outputs of fliq-flops 31 and 32 become identical and the output of the exclusive OR circuit becomes located on the L-level. In case of condition shown in Fig. C, while a pulse of Z-phase is on the H-level., an output of an OR circuit 42 is not located on the L-level, and even if a pulse in a Z-phase is on the L- level, as the output of flip-flop is not subject to resetting, the L-level stays and an output of OR circuit 40 is located on the L-level also. As shown Fig. (d), when the Z-phase remains on the ''L'' level, an abnormality is detected from the OR circuit 46, negation OR circuit 41 with flip-flops 36, 37.
摘要翻译：目的：为了检测速度检测器侧的异常情况，允许控制设备进行处理和响应，而不会对控制设备侧造成任何负担，通过添加表示线路驱动器输出的3态分析的自对角函数在转速和位置检测传感器本身。构成：如果脉冲输入处于正常状态，则异或电路38,39的输出在H电平上传送。但是，如图所示，（a）中，B相的输入脉冲保持在H电平（或L电平）上，触发器31和32的输出变得相同，异或电路的输出变为位于L电平水平。在图3所示的情况下， C，在Z相的脉冲为H电平的情况下，OR电路42的输出不位于L电平上，即使Z相的脉冲为L-电平，由于触发器的输出不被复位，所以L电平停止，OR电路40的输出也位于L电平上。如图所示。（d）中，当Z相保持在“L”电平时，通过触发器36,37从OR电路46，否定OR电路41检测到异常。

18. 发明专利

JPS59136088A Speed controller of brushless motor 失效
标题翻译：无刷电机速度控制器
公开(公告)号：JPS59136088A
公开(公告)日：1984-08-04
申请号：JP733483
申请日：1983-01-21
申请人： Hitachi Ltd
发明人： MUTOU NOBUYOSHI , NAGASE HIROSHI , SAKAI KEIJIROU , NINOMIYA JIYUICHI , TOMITA HIROYUKI
IPC分类号： H02P21/00 , H02P6/00 , H02P6/06 , H02P27/04
CPC分类号： H02P6/00
摘要： PURPOSE:To form an inexpensive speed controller by using an incremental encoder and synchronizing the phase of a winding current command signal with a rotor phase on the basis of a 60 deg. zone detection signal from a rotor position detector. CONSTITUTION:A signal of a speed measuring circuit 14 using an incremental encoder is converted through speed calculation process 21 and a gain convertion process 22 to the angular frequency omega1 of a current command signal, and an angle theta1 is obtained by an integrator 25. Data thetaR for correspondingly synchronizing the varying time point of the 60 deg. zone signal is obtained on the basis of the signal passed through a 60 deg. zone detection signal forming circuit 29 from a position detector 7, a deviation between theta1 and thetaR is used as correction data theta' in the primary delay compensator 26, added to the theta1 to obtain the phase of the current command signal synchronized with the rotor position. Then, a PWM signal is obtained to drive a brushless motor. Accordingly, the speed of less torque pulsation is controlled by an inexpensive encoder.
摘要翻译：目的：通过使用增量式编码器形成廉价的速度控制器，并使绕组电流指令信号的相位与转子相位基准相差60度。来自转子位置检测器的区域检测信号。构成：使用增量编码器的速度测量电路14的信号通过速度计算处理21和增益转换处理22被转换为电流指令信号的角频率ω1，并且角度θ1由积分器25获得。数据 θR用于相应地同步60度的变化时间点。基于通过60度的信号获得区域信号。来自位置检测器7的区域检测信号形成电路29，使用θ1和θR之间的偏差作为主延迟补偿器26中的校正数据θ'，并将其加到θ1上，以获得与转子位置同步的电流指令信号的相位。然后，获得PWM信号来驱动无刷电动机。因此，较低扭矩脉动的速度由便宜的编码器控制。

19. 发明专利

JP2014081750A Data integration and analysis system 有权
标题翻译：数据整合与分析系统
公开(公告)号：JP2014081750A
公开(公告)日：2014-05-08
申请号：JP2012228520
申请日：2012-10-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MORIWAKI NORIHIKO , YANO KAZUO , SATO NOBUO , FUKUMA SHINICHI , TOMITA HIROYUKI , HAYAKAWA MIKI , OKUBO MICHIO
IPC分类号： G06Q10/00 , G06F17/15 , G06F17/30 , G06Q30/06
CPC分类号： G06Q10/0639
摘要： PROBLEM TO BE SOLVED: To provide a technology for generating and analyzing various explanation variables for guiding effective measures by utilizing various data, and to, concretely, automatically generate various explanation variables and perform correlation analysis with objective variables for specifying factors affecting business results hiding in large amounts of data.SOLUTION: Three operators indicating conditions, objects, and operations as variable generation conditions are preliminarily defined with respect to data to be input to an analysis system, and variable explanation variables are automatically generated by those operators.
摘要翻译：要解决的问题：提供一种用于生成和分析各种解释变量的技术，以通过利用各种数据来指导有效措施，并且具体地，自动生成各种解释变量，并且对客观变量进行相关性分析，以指定影响业务成果的因素大量数据。解决方案：三个运算符表示作为变量生成条件的条件，对象和操作关于要输入到分析系统的数据进行初步定义，可变解释变量由这些运算符自动生成。

20. 发明专利

JP2004030093A Method for analyzing gene expression data 审中-公开
公开(公告)号：JP2004030093A
公开(公告)日：2004-01-29
申请号：JP2002183810
申请日：2002-06-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TOMITA HIROYUKI , MAKI HIDEYUKI , MORITA TOYOHISA , SORIN SABAU , TANIGAWA KOJI
IPC分类号： G01N33/53 , C12N15/00 , G01N37/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To provide a method and equipment for knowledge search based on gene expression data (also called a gene expression profile) using a DNA micro-array or the like. SOLUTION: The knowledge search is done through: a process receiving the gene expression data; a process receiving class information; a process extracting a genetic group related to class classification by using a data mining technique; a process executing annotation with respect to the genetic group; a process extracting the common rule of the genetic group related to the class classification based on the genetic annotation; and a process executing the data mining using constraint conditions based on the common rule. COPYRIGHT: (C)2004,JPO

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