公开(公告)号：EP0384435B1

公开(公告)日：1996-08-28

申请号：EP90103349.8

申请日：1990-02-21

申请人： HITACHI, LTD.

发明人： Chiba, Tomio ,  Kido, Mitsuyasu ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Yamanaka, Yoshikazu ,  Yokoyama, Kazuyuki ,  Matsuyama, Takakazu ,  Kawai, Tadao ,  Mori, Shigeru

IPC分类号： H02H3/00

CPC分类号： H02H3/00

公开(公告)号：EP0495590A2

公开(公告)日：1992-07-22

申请号：EP92300215.8

申请日：1992-01-10

申请人： HITACHI, LTD.

发明人： Chiba, Tomio ,  Kido, Mitsuyasu ,  Kawakami, Junzo ,  Hirasawa, Kunio ,  Matsui, Yoshiaki

IPC分类号： G05F1/14 ,  G05F1/70 ,  H02P13/06 ,  G05B13/02 ,  H02J3/12

CPC分类号： H02J3/12 ,  G05B13/0275 ,  H02J3/1878 ,  H02P13/06 ,  Y02E40/30 ,  Y10S706/90

摘要： In order to control a voltage using e.g. a tap transformer (5000), the difference V between the actual voltage (V) and a reference voltage (110) is obtained (120) and integrated over time (130). That integral is then modified by at least one parameter generated by fuzzy logic (3000) from control conditions of the voltage. In this way the fuzzy logic (3000) may find the optimum control strategy which keeps the actual voltage closest to the reference voltage without an excessive number of tap position changes. The reference voltage (110) may vary with time, and therefore the control of the voltage with time may be evaluated (2000), and the control conditions varied accordingly, e.g. by fuzzy logic so that the control arrangement can exhibit learning. Normally, the integral is modified by such that ∫ΔVdt ≧ B when B is the parameter determined by the fuzzy logic (3000), but other control strategies may be used. The present invention is also applicable to control of reactive power.

摘要翻译： 为了控制使用例如电压的电压。 分接变压器（5000），获得实际电压（V）和参考电压（110）之间的差值（120）并随时间积分（130）。 然后通过由电压的控制条件由模糊逻辑（3000）生成的至少一个参数修改该积分。 以这种方式，模糊逻辑（3000）可以找到最佳控制策略，其保持实际电压最接近参考电压，而没有过多的抽头位置变化。 参考电压（110）可以随时间变化，因此可以评估电压随时间的控制（2000），并且控制条件相应地变化，例如， 通过模糊逻辑，使得控制布置可以展现学习。 通常，当B是由模糊逻辑（3000）确定的参数时，积分被修改为使得$，但是可以使用其他控制策略。\; 本发明也适用于无功功率的控制。\mathop{\mathrm{image}}$

公开(公告)号：EP0495590B1

公开(公告)日：1997-04-23

申请号：EP92300215.8

申请日：1992-01-10

申请人： HITACHI, LTD.

发明人： Chiba, Tomio ,  Kido, Mitsuyasu ,  Kawakami, Junzo ,  Hirasawa, Kunio ,  Matsui, Yoshiaki

IPC分类号： G05F1/14 ,  G05F1/70 ,  H02P13/06 ,  G05B13/02 ,  H02J3/12

CPC分类号： H02J3/12 ,  G05B13/0275 ,  H02J3/1878 ,  H02P13/06 ,  Y02E40/30 ,  Y10S706/90

公开(公告)号：EP0437861B1

公开(公告)日：1996-06-05

申请号：EP90125863.2

申请日：1990-12-31

申请人： HITACHI, LTD.

发明人： Kido, Mitsuyasu ,  Chiba, Tomio ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Kawai, Tadao

IPC分类号： H02J13/00 ,  G01R19/25 ,  G01R21/133 ,  G01R23/167 ,  G11B20/10 ,  H04B14/04 ,  H03M1/08 ,  H03H17/02

CPC分类号： H04B14/046 ,  G01R19/25 ,  H02J13/0048 ,  Y02B90/263 ,  Y04S40/123

公开(公告)号：EP0228646A3

公开(公告)日：1987-10-14

申请号：EP86117490

申请日：1986-12-16

申请人： HITACHI, LTD.

发明人： Sasaki, Hiroshi ,  Chiba, Tomio ,  Kido, Mitsuyasu ,  Sato, Yoshio ,  Watanabe, Atsumi

IPC分类号： G11B20/10 ,  G11B05/012 ,  G11B07/013 ,  G11B19/28

CPC分类号： G11B7/24085 ,  G11B5/012 ,  G11B20/10

摘要： A disc (14) is provided with equal-interval pits (141) along tracks, at which digital signals are recorded bit by bit. Such a disc (14) is rotated with constant angular velocity. A signal processing apparatus according to the present invention detects the linear velocity of the track which is at present followed by a pickup. A filter (302) filtering a source signal to be recorded and an A/D converter (304) carrying out analog-to-digital conversion of the filtered signal, in the signal processing for recording, are controlled and timed in accordance with the detected linear velocity. Further, an D/A converter (604) carrying out digital-to-analog conversion of a signal read out from the disc and a filter (606) filtering the converted signal, in the signal processing for reproducing, are also timed and controlled in response to the detected linear velocity. Thereby, a disc memory device having a large storage capacity and suited for the random access memory can be realized.

公开(公告)号：EP0228646A2

公开(公告)日：1987-07-15

申请号：EP86117490.2

申请日：1986-12-16

申请人： HITACHI, LTD.

发明人： Sasaki, Hiroshi ,  Chiba, Tomio ,  Kido, Mitsuyasu ,  Sato, Yoshio ,  Watanabe, Atsumi

IPC分类号： G11B20/10 ,  G11B5/012 ,  G11B7/013

CPC分类号： G11B7/24085 ,  G11B5/012 ,  G11B20/10

摘要： A disc (14) is provided with equal-interval pits (141) along tracks, at which digital signals are recorded bit by bit. Such a disc (14) is rotated with constant angular velocity. A signal processing apparatus according to the present invention detects the linear velocity of the track which is at present followed by a pickup. A filter (302) filtering a source signal to be recorded and an A/D converter (304) carrying out analog-to-digital conversion of the filtered signal, in the signal processing for recording, are controlled and timed in accordance with the detected linear velocity. Further, an D/A converter (604) carrying out digital-to-analog conversion of a signal read out from the disc and a filter (606) filtering the converted signal, in the signal processing for reproducing, are also timed and controlled in response to the detected linear velocity. Thereby, a disc memory device having a large storage capacity and suited for the random access memory can be realized.

摘要翻译： 盘（14）沿着轨道设置有等间隔凹坑（141），数字信号逐位记录。 这种盘（14）以恒定的角速度旋转。 根据本发明的信号处理设备检测当前跟踪拾取的轨道的线速度。 对要记录的源信号进行滤波的滤波器（30A）和在记录信号处理中执行滤波信号的模数转换的A / D转换器（304）根据检测到的信号进行控制和定时 线速度 此外，在用于再现的信号处理中对从盘读出的信号进行数模转换的D / A转换器（604）和对转换后的信号进行滤波的滤波器（606）也进行定时和控制 响应于检测到的线速度。 因此，可以实现具有大存储容量并且适合随机存取存储器的盘存储装置。

公开(公告)号：EP0437861A2

公开(公告)日：1991-07-24

申请号：EP90125863.2

申请日：1990-12-31

申请人： HITACHI, LTD.

发明人： Kido, Mitsuyasu ,  Chiba, Tomio ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Kawai, Tadao

IPC分类号： H02J13/00 ,  G01R19/25 ,  G01R21/133 ,  G01R23/167 ,  G11B20/10 ,  H04B14/04 ,  H03M1/08 ,  H03H17/02

CPC分类号： H04B14/046 ,  G01R19/25 ,  H02J13/0048 ,  Y02B90/263 ,  Y04S40/123

摘要： A method of and system for processing a digital signal are disclosed. Disclosed also are an electric power system digital controlling system and a digital relay system which utilize the signal processing system for obtaining physical quantities of a voltage and a current inputted from the electric power system. An analog signal is sample-held. The sample-held data is converted into digital data which is then filtering-processed. Arithmetic processing is effected based on the data from a digital filter means. In this digital filter means, a blocking zone of the digital filter is set to a higher frequency zone than a passage zone of the analog signal. A sampling frequency is set so that a noise generating region is larger than the blocking zone. The synthesis noises are thereby caused in the blocking zone.

摘要翻译： 系统用于处理数字信号的方法，并且游离缺失光盘。 因此本发明公开了在电力系统中以数字方式控制系统和其利用用于获得电压的物理量和从电力系统输入的电流的信号处理系统的数字继电器系统。的模拟信号进行采样保持。 采样保持的数据被转换成数字数据的所有其然后滤波处理。 运算处理是根据从数字滤波器装置中的数据来实现。 在该数字滤波装置，数字滤波器的阻断区域被设定为比所述模拟信号的一个通道区高的频率区。 采样频率被设定为使得做了噪声生成区比阻挡区域更大。 合成噪声在阻挡区，从而引起的。

公开(公告)号：EP0384435A2

公开(公告)日：1990-08-29

申请号：EP90103349.8

申请日：1990-02-21

申请人： HITACHI, LTD.

发明人： Chiba, Tomio ,  Kido, Mitsuyasu ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Yamanaka, Yoshikazu ,  Yokoyama, Kazuyuki ,  Matsuyama, Takakazu ,  Kawai, Tadao ,  Mori, Shigeru

IPC分类号： H02H3/00

CPC分类号： H02H3/00

摘要： A power signal processing system high in expandability and versatility is disclosed, in which a signal representing the conditions of a power system is taken in and subjected to digital computation processing, and a signal is produced for protecting or controlling the power system on the basis of the computation result. The power signal processing system comprises a plurality of processing units (2, 3, 4, 5, 6, 7, 8, 9) for executing a series of processings from signal input to signal output based on the computation result in divided fashion in accordance with the processing functions. A system control unit (1) has a function of controlling the units to assure sequential data transfer therebetween according to the divided processing functions, thereby standardizing the power signal processing system.

摘要翻译： 公开了一种高可扩展性和多功能性的电力信号处理系统，其中表示电力系统的状况的信号被采用并进行数字计算处理，并且产生用于基于以下方式保护或控制电力系统的信号： 计算结果。 功率信号处理系统包括多个处理单元（2,3,4,5,6,7,8,9），用于根据计算结果执行从信号输入到信号输出的一系列处理 具有处理功能。 系统控制单元（1）具有根据划分的处理功能来控制单元以确保其之间的顺序数据传送的功能，从而标准化功率信号处理系统。

公开(公告)号：EP0437861A3

公开(公告)日：1993-12-29

申请号：EP90125863.2

申请日：1990-12-31

申请人： HITACHI, LTD.

发明人： Kido, Mitsuyasu ,  Chiba, Tomio ,  Kudo, Hiroyuki ,  Kawakami, Junzo ,  Kawai, Tadao

IPC分类号： H02J13/00 ,  G01R19/25 ,  G01R21/133 ,  G01R23/167 ,  G11B20/10 ,  H04B14/04 ,  H03M1/08 ,  H03H17/02

CPC分类号： H04B14/046 ,  G01R19/25 ,  H02J13/0048 ,  Y02B90/263 ,  Y04S40/123

摘要： A method of and system for processing a digital signal are disclosed. Disclosed also are an electric power system digital controlling system and a digital relay system which utilize the signal processing system for obtaining physical quantities of a voltage and a current inputted from the electric power system. An analog signal is sample-held. The sample-held data is converted into digital data which is then filtering-processed. Arithmetic processing is effected based on the data from a digital filter means. In this digital filter means, a blocking zone of the digital filter is set to a higher frequency zone than a passage zone of the analog signal. A sampling frequency is set so that a noise generating region is larger than the blocking zone. The synthesis noises are thereby caused in the blocking zone.

公开(公告)号：EP0495590A3

公开(公告)日：1993-05-05

申请号：EP92300215.8

申请日：1992-01-10

申请人： HITACHI, LTD.

发明人： Chiba, Tomio ,  Kido, Mitsuyasu ,  Kawakami, Junzo ,  Hirasawa, Kunio ,  Matsui, Yoshiaki

IPC分类号： G05F1/14 ,  G05F1/70 ,  H02P13/06 ,  G05B13/02 ,  H02J3/12

CPC分类号： H02J3/12 ,  G05B13/0275 ,  H02J3/1878 ,  H02P13/06 ,  Y02E40/30 ,  Y10S706/90

摘要： In order to control a voltage using e.g. a tap transformer (5000), the difference V between the actual voltage (V) and a reference voltage (110) is obtained (120) and integrated over time (130). That integral is then modified by at least one parameter generated by fuzzy logic (3000) from control conditions of the voltage. In this way the fuzzy logic (3000) may find the optimum control strategy which keeps the actual voltage closest to the reference voltage without an excessive number of tap position changes. The reference voltage (110) may vary with time, and therefore the control of the voltage with time may be evaluated (2000), and the control conditions varied accordingly, e.g. by fuzzy logic so that the control arrangement can exhibit learning. Normally, the integral is modified by such that ∫ΔVdt ≧ B when B is the parameter determined by the fuzzy logic (3000), but other control strategies may be used. The present invention is also applicable to control of reactive power.