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1. 发明专利

JP2001092795A DISTRIBUTED PROGRAMMABLE SERVO CONTROLLER SYSTEM 失效
公开(公告)号：JP2001092795A
公开(公告)日：2001-04-06
申请号：JP26747799
申请日：1999-09-21
申请人： HITACHI LTD
发明人： KOYAMA MASAHIRO , HOSODA YUJI , SHIMOZU TADAO , TAKASE MASATO , OHASHI TAKANORI
IPC分类号： G06F15/16 , G05B19/05
摘要： PROBLEM TO BE SOLVED: To provide a distributed programmable servo controller system formed by simplifying structure of a control system and reducing its manufacturing cost without lowering a function of a processing for which high speed is required. SOLUTION: A multi-axes mechanism control processing with lower interruption level than single-axis servo control and a communication processing between controllers is successively allocated to servo controllers from the one with the smallest processing load except a multi-axes mechanism control processing by a multi-axes cooperation control processing allocating means 105c and its allocation information is transmitted to each controller by a control information distributing means 105d.

2. 发明专利

JPH11206187A MOTOR CONTROLLING DEVICE 失效
公开(公告)号：JPH11206187A
公开(公告)日：1999-07-30
申请号：JP577798
申请日：1998-01-14
申请人： HITACHI LTD
发明人： OHASHI TAKANORI , ENDO TSUNEHIRO , TAGUCHI YOSHIYUKI , KAWASHIMA TAKUYA
IPC分类号： H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a motor controlling device that has operation command equipment separate from the motor controlling device body, and at the same time does not require the installation of a signal line. SOLUTION: Carrier transmission circuits 21 and 34 and carrier reception circuit 22 and 35 are provided in both of a motor controlling device body 1 and operation command equipment 2, and a signal is transmitted and received between the motor controlling device body 1 and the operation command equipment 2 via a power supply line L. The signal line is not specially required between the motor controlling device body 1 and the operation command equipment 2, thus simplifying a configuration, achieving low costs, and obtaining the large amount of noise resistance.

3. 发明专利

JPH05344779A 失效
公开(公告)号：JPH05344779A
公开(公告)日：1993-12-24
申请号：JP14457592
申请日：1992-06-04
申请人： HITACHI LTD
发明人： OHASHI TAKANORI , ENDO TSUNEHIRO , TAKAHASHI TADASHI , HASHIMOTO ICHIRO , NOJIRI YUKO , HARA MASAHIKO
IPC分类号： H02M7/48 , H02P5/00 , H02P5/46 , H02P6/08 , H02P21/00 , H02P27/04 , H02P27/06 , H02P29/00 , H02P6/02 , H02P5/408 , H02P5/41
摘要： PURPOSE:To provide an inexpensive, downsized load current controller in which number of components is reduced regardless of the type of motor load. CONSTITUTION:The current controller comprises a current control operating section 101, a PWM generating circuit 102, a dead time generating circuit 103, an overcurrent protective circuit 105, a current detecting circuit 106, and an encoder processing circuit 107, all of which are placed on one semiconductor substrate. Since the current controller can be employed in various types of motor load, mass productivity is enhanced and cost reduction is realized.

4. 发明专利

JPH04204459A RECORDING DEVICE, CONTROL DEVICE OF RECORDING DEVICE AND ITS CONTROLLING METHOD 失效
公开(公告)号：JPH04204459A
公开(公告)日：1992-07-24
申请号：JP32906090
申请日：1990-11-30
申请人： HITACHI LTD
发明人： OHASHI TAKANORI , KANAZAWA HIROYUKI , TAKAHASHI TADASHI , MUTO NOBUYOSHI , HASHIMOTO ICHIRO
IPC分类号： G03G15/01 , G03G15/00 , G03G15/16 , G03G21/00 , G03G21/10 , G05D3/12
摘要： PURPOSE:To control a transfer position with high accuracy even though a load variation occurs and to form a high definition image by providing a motor driving means for driving the motor based on the information on a motor loading condition. CONSTITUTION:By using communication means 15s, 15t, 15p between low-order control parts 7s, 7t, 7p controlling motors Ms, Mt, Mp and a upper-order control part 13 controlling the total device, other loading conditions of a position command, a speed command, etc., and the information showing the varying time are transferred to a scheduler 373 of the low-order control parts 7s, 7t, 7p and the control gains and the control methods of a position, speed, current control part 71 are changed with the scheduler 73. Besides the load situation is detected with a load device 14 and the detected result is feed-backed to the scheduler 73. Hence corresponding to the load situation, the control gains and the control methods of the optimized motor control system are selected with the scheduler 73 and the speed variation of the motor can be suppressed. Hence the transfer position is controlled with high accuracy and the high definition copy image is formed.

5. 发明专利

JPH04193083A SPEED CONTROLLER 失效
公开(公告)号：JPH04193083A
公开(公告)日：1992-07-13
申请号：JP32414390
申请日：1990-11-27
申请人： HITACHI LTD
发明人： YAMASHITA KOJIRO , ENDO TSUNEHIRO , OHASHI TAKANORI , KANAZAWA HIROYUKI
IPC分类号： G05B11/32 , G05D13/62 , H02P25/098 , H02P29/00 , H02P29/20
摘要： PURPOSE:To reduce the speed pulsation of a motor by providing it with a means for deciding the quantity of compensation to disturbance and a storage means for storing the quantity of compensation being gotten, and adding the quantity of compensation to the output of a speed control means. CONSTITUTION:Considering the disturbance occurring in connection with the position of the rotor such as cogging torque, it is supposed that such disturbance occurs m times per revolution. Moreover, it is defined that it should be compensated dividing the one cycle of the cyclic disturbance and that the number of elements, which are contained in a storage means 4-1 to store the quantity of compensation, is N. An encoder 10 selects the one of mXN pulses per revolution. Thereupon, by counting the encoder pulses with an N-ary counter being the rotational position detection means 4-2, the phase of the cyclic disturbance and the value of the counter can be corresponded to 1 vs. 1. By making the value of this counter and the numbers given to n pieces of elements, which are contained in the storage means to store the quantity of compensation, correspond to each other, each phase of the cyclic disturbance and the element to store the quantity of compensation are made to correspond to each other.

6. 发明专利

JP2000341985A MOTOR CONTROLLER PROVIDED WITH FAILURE DIAGNOSIS FUNCTION 失效
公开(公告)号：JP2000341985A
公开(公告)日：2000-12-08
申请号：JP14766199
申请日：1999-05-27
申请人： HITACHI LTD
发明人： OHASHI TAKANORI , YANADA TETSUO , HORIKAWA HITOSHI , TAKADA HIDETO
IPC分类号： H02K29/00 , H02P6/12
摘要： PROBLEM TO BE SOLVED: To provide a motor controller which easily enables failure determining of a motor magnetic pole position signal, without preparing a measuring apparatus in the outside, by using a controller. SOLUTION: A waveform analyzer 11 of a magnetic pole position signal Smg and a display 12 are prepared in a controller 1. A position number is displayed by using the magnetic position signal Smg. By exciting a motor M with DC or driving the motor with a low frequency, the position number is automatically determined. By displaying the output voltage of a speed adjuster in the controller 1 with a display 12, or by determining the output voltage automatically, failure determination is made.

7. 发明专利

JPH10150777A CONTROLLER OF INVERTER 失效
公开(公告)号：JPH10150777A
公开(公告)日：1998-06-02
申请号：JP30780296
申请日：1996-11-19
申请人： HITACHI LTD
发明人： ISHIDA SEIJI , OHASHI TAKANORI , ENDO TSUNEHIRO , TAGUCHI YOSHIYUKI , SUGINO HIDENORI
IPC分类号： H02H3/08 , H02H3/087 , H02M7/48 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To make a setting more precisely and simply and keep the cost low by constituting various setting devices with software wherever practicable. SOLUTION: In order to detect various overcurrents precisely, a controller is so structured that it may cope with a slightly slow excess current at the time when the output of a current estimating device 21 exceeds the set value of a second current limit value setting device 22 and may cope with a surging overcurrent at the time when the output of a current detector 5 exceeds the set value of a current limit value setting device 9. There is no necessity of A/D conversion of the output waveform of the current estimating device 21 synchronously with that of the current detector 5, and therefore not only a current controller 23 but also the second current limit value setting device 22 at the input side of the current controller 23 can be constituted of software.

8. 发明专利

JPH0334685A VIDEO RECORDER 失效
公开(公告)号：JPH0334685A
公开(公告)日：1991-02-14
申请号：JP16668189
申请日：1989-06-30
申请人： HITACHI LTD
发明人： KANAZAWA HIROYUKI , TAJIMA FUMIO , NIHEI HIDEKI , YAMASHITA KOJIRO , KATAYAMA HIROSHI , TANAE SHUNICHI , OHASHI TAKANORI , IZUMI HIROMI , ENDO TSUNEHIRO , SAITO KOICHI
IPC分类号： H04N5/907
摘要： PURPOSE:To obtain a video recorder requiring less energy and space, also having high sound and picture quality by using only a static storage medium as the storage medium of an audio and a picture signal. CONSTITUTION:A picture sampling signal (a) and a sound sampling signal (d) are used as the signal to increment the address of a memory pack 3 and controlled by a vertical synchronizing signal being the reference signal of one picture. This vertical synchronizing signal (b) to be the control signal is generated by a controller 2 having the arithmetic function suck as a microcomputer. A control signal (g) to directly select the address is also outputted from this controller 2. Since a static storage medium is used instead of a conventionally used rotating and moving storage medium, actuators of a capstan motor, a spindle motor, etc., related to rotation and movement are eliminated.

9. 发明专利

JP2011211796A Controller for synchronous motor 审中-公开
标题翻译：同步电机控制器
公开(公告)号：JP2011211796A
公开(公告)日：2011-10-20
申请号：JP2010075629
申请日：2010-03-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKANO HIROMICHI , OHASHI TAKANORI , YONEMOTO SHINJI , YANADA TETSUO , MATSUMOTO YUTAKA
IPC分类号： H02P23/00 , H02P6/10
摘要： PROBLEM TO BE SOLVED: To suppress a speed ripple with an irregular amplitude by creating a correction for suppressing the speed ripple of a synchronous motor due to a cyclic disturbance, based on a preset parameter.SOLUTION: The switch 22 of a cyclic disturbance corrector 19 is switched off, and a constant speed command Nref is inputted to rotate the synchronous motor 4. At this time, a cyclic disturbance correction signal h(θ) is not supplied to an adder 6 from the cyclic disturbance corrector 19, and it operates in the state where a speed ripple caused by the cyclic disturbance Txst is not suppressed. In such a state, a PC23 for adjustment of a controller fetches and monitors a current command Iref, and finds a phase adjustment amount θofst, an order B, and an amplitude function f(θ) with a motor rotational position θ as a variable, and generates h(θ)=f(θ) sin(B θ+θ+ofst) as a cyclic disturbance correction signal h(θ), based on this parameter, and adds it to the adder 6.
摘要翻译：要解决的问题：基于预设参数，通过产生用于抑制由于循环扰动引起的同步电动机的速度纹波的校正来抑制具有不规则振幅的速度波动。解决方案：循环扰动校正器19的开关22 并且输入恒定速度指令Nref以使同步电动机4旋转。此时，循环扰动校正信号h（θ）不从循环扰动校正器19提供给加法器6，并且其操作在不会抑制由循环扰动Txst引起的速度波动的状态。在这种状态下，用于调节控制器的PC23提取并监视电流指令Iref，并且以电动机旋转位置θ为变量，求出相位调整量θofst，阶数B和振幅函数f（θ）并根据该参数生成h（θ）= f（θ）sin（Bθ+θ+ ofst）作为循环扰动校正信号h（θ），并将其加到加法器6。

10. 发明专利

JP2001178180A DETECTION METHOD FOR GROUND FAULT IN PERMANENT MAGNET MOTOR CONTROLLER 失效
公开(公告)号：JP2001178180A
公开(公告)日：2001-06-29
申请号：JP35708499
申请日：1999-12-16
申请人： HITACHI LTD
发明人： HORIKAWA HITOSHI , OHASHI TAKANORI , YANADA TETSUO
IPC分类号： G01R31/02 , H02M7/48 , H02P6/06 , H02P6/08 , H02P6/16
摘要： PROBLEM TO BE SOLVED: To provide a detecting method, for a ground fault in a permanent magnet motor controller, in which the ground fault can be detected by a method where a short-circuit current of the induced current generated as of the motor rotates is suppressed. SOLUTION: When a permanent magnet motor is running at a high speed when the ground fault is detected, the ON-duty of a repeated waveform, which turns on and off a switching transistor constituting a lower arm is made small. When the permanent magnet motor is notated at a low speed, the ON-duty is made large, and the ground fault is detected.

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