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41. 发明专利

JPS6084992A CONTROLLING METHOD FOR INDUCTION MOTOR 失效
公开(公告)号：JPS6084992A
公开(公告)日：1985-05-14
申请号：JP19080783
申请日：1983-10-14
申请人： HITACHI LTD
发明人： OKUYAMA TOSHIAKI , AZUSAWA NOBORU , KUBOTA YUZURU
IPC分类号： H02P27/04 , H02P21/00 , H02P21/18 , H02P21/22 , H02P21/24 , H02P23/07 , H02P23/08 , H02P23/16 , H02P23/22 , H02P27/06 , H02P27/08
摘要： PURPOSE:To enable to accurately control the high speed response and the speed of an induction motor without using a speed detector by controlling the components of the phase currents of the motor of 90 deg.C phase difference with respect to the phase references of a transformer output to be proportional to the exciting current command. CONSTITUTION:2-axial components ed, eq of a motor voltage are detected by voltage component detectors 7, 8. An excitation phi can be detected as an induced electromotive force, thereby detecting the signal corresponding to phiq by ed and the signal corresponding to phid by eq. The signal ed is applied to an adder 9 together with the output signal of a rate-of-change limiter 4, and f1 is controlled to always become ed=0(phiq=0). The detection signal eq is converted at an addition point 21 to a speed signal (omega), the deviation between the speed command signal and the signal (omega) from the limiter 4 is amplified in the amplifier 5, thereby controlling the rotating speed in response to the command.

42. 发明专利

JPS6061454A LINE MATERIAL PROCESSOR ASSOCIATED WITH LOOP CAR 失效
公开(公告)号：JPS6061454A
公开(公告)日：1985-04-09
申请号：JP16831683
申请日：1983-09-14
申请人： HITACHI LTD
发明人： AZUSAWA NOBORU , SHIMIZU ITSUO , MATSUKA SHIGEMICHI
IPC分类号： B65H23/192 , B21B41/00 , B21C49/00 , B65H20/24 , B65H23/18 , B65H23/188 , G05D15/01 , H02P5/46
摘要： PURPOSE:To prevent fluctuation of tention by correcting the torque command in accordance to the torque correction amount to be set with correspondence to the differential speed of motors for performing roll control at the inlet side and the processing side then controlling the motor for loop car on the basis of said correction command. CONSTITUTION:When feeding an iron plate 10 to be processed through rewind reel 1, bridle rolls 2, 3 and loop car 4 to the processing section, the difference between the speed commands v1c, v2c of motors 2A, 3A for each bridle roll 2, 3 and the speeds detected through speed detectors 2E, 3F will appear as the load torque variation of motor 29 for loop car. The speed vL of loop car 4 is followed by tension correcting circuit 45 with correspondence to said differential speed. In other word, the difference between a torque command and required torque is operated then the torque produced from motor 4C for loop car 4 will follow the required torque thus to eliminate fluctuation of tension to be applied onto the iron board 10.

43. 发明专利

JPS59153481A Remote diagnosing system for speed controller 失效
标题翻译：用于速度控制器的远程诊断系统
公开(公告)号：JPS59153481A
公开(公告)日：1984-09-01
申请号：JP2463083
申请日：1983-02-18
申请人： Hitachi Ltd
发明人： AZUSAWA NOBORU , KAMIYAMA KENZOU
IPC分类号： H02P29/00 , G05B23/02 , H02P5/00 , H02P5/46
CPC分类号： H02P5/00
摘要： PURPOSE:To accurately perform study or the like of abnormal cause in a short time by providing data storing means and malfunction discriminating means, thereby displaying data of the storing means by a malfunction signal. CONSTITUTION:When a malfunction occurs in a speed controller 15N, the malfunction of the controller 15N is fed to a channel switch 16, and the malfunction of the controller 15N is fed to a diagnosing unit 17 after the transmision from the unit 17 to another speed controller 15X is finished. The switch 16 is set to N, the prescribed data of the controller 15N at the malfunction time is displayed, recorded, and diagnosed by a technician.
摘要翻译：目的：通过提供数据存储装置和故障识别装置，在短时间内准确地进行异常原因的学习等，从而通过故障信号显示存储装置的数据。构成：当在速度控制器15N中发生故障时，控制器15N的故障被馈送到通道开关16，并且在从单元17传输到另一个速度之后，控制器15N的故障被馈送到诊断单元17 控制器15X完成。开关16被设定为N，故障时的控制器15N的规定数据被技术人员显示，记录和诊断。

44. 发明专利

JPS59127586A Digital type controller 失效
标题翻译：数字式控制器
公开(公告)号：JPS59127586A
公开(公告)日：1984-07-23
申请号：JP216583
申请日：1983-01-12
申请人： Hitachi Ltd
发明人： MIYAHARA YOUJIROU , AZUSAWA NOBORU , TACHIKAWA MAKOTO
IPC分类号： H02P7/292 , G05B23/02 , H02P23/00
CPC分类号： H02P23/0077
摘要： PURPOSE:To shorten the down time by matching a communication speed and a voltage level with an acoustic coupler and an adapter for the connection to a telephone channel when diagnosing the malfunction by transmitting data to be controlled through the telephone channel. CONSTITUTION:A thyristor converter 2 is connected to a motor 3, digitally controlled by a microproceessor 6, the cause is stored in a memory 7 at the malfunction time, read out by an input/output unit 12, thereby shooting the cause. When the analysis of the cause is difficult, it is transmitted to the input/output unit with screen at the center by using an adapter 16, an acoustic coupler 15 and a telephone channel, and diagnosed. At this time a changeover switch and a voltage level converter are provided in the adapter 16, thereby enabling to alter the voltage level to the transmission system. Accordingly, the down time can be shortened.
摘要翻译：目的：通过传输通过电话频道进行控制的数据来诊断故障时，通过将通信速度和电压电平与声耦合器和适配器进行匹配来缩短停机时间。构成：晶闸管转换器2连接到由微处理器6数字控制的电动机3，故障原因存储在存储器7中，由输入/输出单元12读出，从而拍摄原因。当原因分析困难时，通过使用适配器16，声耦合器15和电话信道将其传送到中心的屏幕的输入/输出单元并被诊断。此时，在适配器16中设置有转换开关和电压电平转换器，从而能够改变传输系统的电压电平。因此，可以缩短停机时间。

45. 发明专利

JPS58221420A Device for controlling coversion of multisystem power 失效
标题翻译：用于控制多体功率覆盖的装置
公开(公告)号：JPS58221420A
公开(公告)日：1983-12-23
申请号：JP10388082
申请日：1982-06-18
申请人： Hitachi Ltd
发明人： AZUSAWA NOBORU , KITAMURA SATORU
IPC分类号： G05F1/00 , G05F1/10 , G05F1/455 , H02M1/08
CPC分类号： H02M1/08
摘要： PURPOSE:To reduce variation due to a load or the like at the switching of a control circuit, by comparing a control signal with the one outputted from the control circuit concerned to correct the control signal of the control circuit. CONSTITUTION:When the phase of an output controlling signal 104B from a pulse phase shifter 166B in a control circuit 26B is deviated from the phase of a control signal 120 supplied at present to a thyristor coverter 10, a phase deviation detecting means 30B detects the deviation and adds a deviation correcting signal 130B formed on the basis of the deviation to an adder 161B to control the phase shift between the phase of a control circuit 26A in operation and the phase of the phase shifter 166B so as to be compensated. Therefore, the phase of a signal 104B is allowed to coincide with that of the output controlling signal 104A of a pulse phase shifter 166A in a control circuit 26A, so that switching from the control circuit 26A to the control circuit 26B can be smoothly executed.
摘要翻译：目的：通过将控制信号与从有关控制电路输出的控制信号进行比较来校正控制电路的控制信号，减少控制电路切换时由负载等引起的变动。构成：当来自控制电路26B中的脉冲移相器166B的输出控制信号104B的相位偏离目前提供给晶闸管覆盖器10的控制信号120的相位时，相位偏差检测装置30B检测偏差并且将基于偏差形成的偏差校正信号130B与加法器161B相加，以控制运算中的控制电路26A的相位和移相器166B的相位之间的相移，从而进行补偿。因此，允许信号104B的相位与控制电路26A中的脉冲移相器166A的输出控制信号104A的相位一致，从而可以平稳地执行从控制电路26A到控制电路26B的切换。

46. 发明专利

JPS5849116B2 JPS5849116B2 - 失效
公开(公告)号：JPS5849116B2
公开(公告)日：1983-11-01
申请号：JP10701375
申请日：1975-09-05
申请人： Hitachi Ltd
发明人： AZUSAWA NOBORU , KAMYAMA KENZO , KONISHI TSUTOMU
IPC分类号： H02P6/08 , H02M7/155 , H02M7/515 , H02P7/28

47. 发明专利

JPS5866445A SIGNAL COLLATING CIRCUIT 失效
公开(公告)号：JPS5866445A
公开(公告)日：1983-04-20
申请号：JP16413981
申请日：1981-10-16
申请人： HITACHI LTD
发明人： OGURA NOBUYUKI , AZUSAWA NOBORU , ADACHI SHIGEKI , TSUNODA TOORU , UWAZUMI NOBUYOSHI
IPC分类号： H04L1/08 , H04L25/06
摘要： PURPOSE:To realize the simplification and flexibility of a signal collating circuit, by setting the clock period of a shift register at the value corresponding to the frequency necessary to regard as an effective signal and using the output signal to a logical arithmetic output of plural shift registers. CONSTITUTION:The value of a receiving signal 10 is shifted successively from an output 31 to an output 34 of a shift register on the basis of a clock signal 40. The period of the signal 40 is set at the value corresponding to an input frequency necessary to regard the signal 10 as an effective signal. The 2nd stage output 32 and an output 35 of a NOT input AND element 22 are led to a reset input. Then outputs 31-34 are all reset when both the signal 10 and the 2nd stage output 32 are set at 0. On the other hand, an OR is secured by an OR element 23 between the output 32 and the 4th stage output 34. Then a ''1'' signal is delivered as an output signal 20 of a signal collating circuit when the output of either stage is set at ''1''.

48. 发明专利

JPS5818712A POSITION CONTROLLER 失效
公开(公告)号：JPS5818712A
公开(公告)日：1983-02-03
申请号：JP11521681
申请日：1981-07-24
申请人： HITACHI LTD
发明人： AZUSAWA NOBORU , YOSHIDA OSAO
IPC分类号： G05D3/12 , G05D3/20
摘要： PURPOSE:To control a position with high accuracy by executing the succeeding control on the basis of the quantity of coasting and that of an error in the preceding control. CONSTITUTION:An apparatus driven by a motor is turned to creeping speed just before its stop and then braked in consideration of the quantity of coasting. In this case, the quantity of coasting generated until the apparatus is stopped after braking and an error from a prescribed position at the time of stopiing are detected and stored in memories 13, 15. Coasting information is updated on the basis of these information. In the succeeding operation, the quantity of coarsing to be generated until the stop of the apparatus is calculated on the basis of the preceding error to obtain braking timing.

49. 发明专利

JPS55111661A CONVERSION SIGNAL SYNCHRONIZING DEVICE 失效
公开(公告)号：JPS55111661A
公开(公告)日：1980-08-28
申请号：JP1732579
申请日：1979-02-19
申请人： HITACHI LTD
发明人： AZUSAWA NOBORU
IPC分类号： H02M1/08
摘要： PURPOSE:To obtain a conversion signal the phase of which is synchronized with the power supply by correcting a phase lag, which is corresponding to the frequency produced in the filter that removes the distortion of waveform of the power supply, and by making it a phase lag at 180 deg.. CONSTITUTION:The phase lag thetaA1 of a signal C detected by the zero detecting circuit 11 after frequency f1 of the power supply with distortion is passed through the filter 10 is as follows. thetaA1=2f1.T.180 deg. where T is the time constant of the filter 10. The dalta wave signal generator 13 of the frequency changing circuit 12 proeuces a dalta wave D with a maximum value V when the signal C shifts from a low level to a high level, the frequency voltage circuit 14 produces voltage of kf1 and the subtraction circuit 15 does voltage of V-kf1. Also the selecting circuit 16 provides the output kf1 or V-kf1 according to a high or low level of the signal C, the comparator 17 compares both output levels of the circuits 16, 13 with each other and provides a signal of a high or low level, the phase lag thetaB1 becomes as follows. thetaB1=180 deg.-kf1/V.180 deg.. Accordingly, when the factor k is selected so that thetaA1+ thetaB1=180 deg., that is k=2TV, a conversion signal the phase of which is synchronized with the power supply can be obtained.

50. 发明专利

JPS5526071A DIGITAL PULSE PHASE SHIFTER 失效
公开(公告)号：JPS5526071A
公开(公告)日：1980-02-25
申请号：JP9909378
申请日：1978-08-16
申请人： HITACHI LTD
发明人： MIYAHARA YOUJIROU , KAMIYAMA KENZOU , AZUSAWA NOBORU
IPC分类号： H02M1/08
摘要： PURPOSE:To prevent the inflow of overcurrent due to the failure in commutation, by automatically changing a control angle for a prescribed time after the stoppage of a digital control circuit. CONSTITUTION:A time-up detection circuit 33 generates a low output when no control angle signal is entered for a prescribed time. A flip-flop 34 performs shifting when it receives a shifting instruction. A control angle register 32 can be used as either a counter or a register. When the digital control circuit 7 is normal, the control angle register 32 is used as a register. When the digital control circuit is abnormal, the control angle register is used as counter. A control angle instruction is thus changed at a constant ratio after the stoppage of the digital control circuit. A thyristor gate pulse is thereafter suppressed. Even if a digital controller becomes abnormal due to some cause, the thyristor gate pulse is not immediately eliminated and the control angle is once shifted and then suppressed. Therefore, no commutation failure takes place even in inverter operation.

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