公开(公告)号：US09557731B2

公开(公告)日：2017-01-31

申请号：US13571803

申请日：2012-08-10

申请人： Tadashi Okita ,  Yasusuke Iwashita

发明人： Tadashi Okita ,  Yasusuke Iwashita

IPC分类号： G05B19/18 ,  G05B19/414

CPC分类号： G05B19/4141 ,  G05B19/186 ,  G05B2219/50216

摘要： A control device (1) of a gear processing machine has a bus (51) that communicates by directly connecting between a tool axis controller (22) and a workpiece axis controller (12), and, in this control device, the position of a tool axis (40) that is detected by a tool axis position detection sensor (25) is supplied to a workpiece axis controller via a bus, an upper controller (10) supplies a predetermined synchronization ratio and a superimposition command for applying a twisting operation to a workpiece axis controller, and the workpiece axis controller adds a value that is generated by multiplying the position of the tool axis that is supplied via the bus, by the synchronization ratio, and the superimposition command, and generates a motion command for a workpiece axis (30).

摘要翻译： 齿轮加工机的控制装置（1）具有通过工具轴控制器（22）和工件轴控制器（12）之间的直接连接进行连通的总线（51），在该控制装置中， 通过工具轴位置检测传感器（25）检测到的刀具轴（40）经由总线被供给到工件轴控制器，上控制器（10）将施加扭转操作的预定同步比和叠加指令提供给 工件轴控制器，工件轴控制器通过乘以通过总线提供的刀具轴的位置乘以同步比和叠加命令而生成的值，并且生成用于工件轴的运动命令 （30）。

公开(公告)号：US20120249025A1

公开(公告)日：2012-10-04

申请号：US13431020

申请日：2012-03-27

申请人： Tadashi OKITA ,  Yukio TOYOZAWA ,  Kenji TAKAHASHI

发明人： Tadashi OKITA ,  Yukio TOYOZAWA ,  Kenji TAKAHASHI

IPC分类号： H02P6/16

CPC分类号： H02P6/18 ,  H02P21/34

摘要： A detection device for detecting a magnetic pole position of a synchronous motor includes a generating unit for generating a magnetic pole correction value based on the difference between a forward rotation d-phase voltage command and a reverse rotation d-phase voltage command, the d-phase voltage commands being used for rotating the synchronous motor and generated when the synchronous motor is driven in forward and reverse directions, respectively, by applying a prescribed d-phase current command after detecting a magnetic pole initial position at power-on of the synchronous motor, and a correcting unit for correcting the magnetic pole initial position based on the magnetic pole correction value and on a sensor reference position which defines a reference position of a sensor attached to the synchronous motor, and a control apparatus equipped with the detection device controls the rotation of the synchronous motor based on the corrected magnetic pole initial position.

摘要翻译： 用于检测同步电动机的磁极位置的检测装置包括用于基于正向旋转d相电压指令和反向旋转d相电压指令之间的差产生磁极校正值的发生单元， 相电压指令用于旋转同步电动机，并且通过在同步电动机的通电检测到磁极初始位置之后施加规定的d相电流指令，分别在正向和反向驱动同步电动机时产生 以及校正单元，用于基于磁极校正值校正磁极初始位置，以及用于限定安装在同步电动机上的传感器的基准位置的传感器基准位置，并且配备有检测装置的控制装置控制 基于校正磁极初始位置的同步电动机的旋转。

公开(公告)号：US08190287B2

公开(公告)日：2012-05-29

申请号：US12793337

申请日：2010-06-03

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Junichi Tezuka ,  Kazuyuki Sugiyama

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Junichi Tezuka ,  Kazuyuki Sugiyama

IPC分类号： G06F19/00 ,  G05B11/01 ,  G05B23/02 ,  G05B19/25

CPC分类号： G05B19/4097

摘要： Time information t and positional information about each axis are obtained, and the three-dimensional coordinates of tool center point Pe at time t are calculated to display the path of the tool center point Pe at time t. Then, whether a fixed time has elapsed or not is decided. If the fixed time has elapsed, the coordinates of the tool vector start point Ps at time t are calculated to display a line segment connecting between tool vector start point Ps and tool center point Pe, which is the end point of the tool vector. This display enables the orientation of the tool at each tool center point to be grasped at a glance.

摘要翻译： 时间信息t和关于每个轴的位置信息被获得，并且计算在时间t的工具中心点Pe的三维坐标，以在时间t显示工具中心点Pe的路径。 然后，确定是否经过固定时间。 如果经过固定时间，则计算时刻t的刀具矢量开始点Ps的坐标，以显示连接刀具矢量开始点Ps和作为刀具矢量的终点的刀具中心点Pe之间的线段。 该显示使得能够一目了然地掌握各工具中心点处的工具的取向。

公开(公告)号：US08058827B2

公开(公告)日：2011-11-15

申请号：US12880108

申请日：2010-09-12

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Junichi Tezuka ,  Kazuyuki Sugiyama

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Junichi Tezuka ,  Kazuyuki Sugiyama

IPC分类号： B23Q5/04

CPC分类号： H02P6/10 ,  G05B19/404 ,  G05B2219/41138 ,  H02P23/14

摘要： A motor control apparatus that can calculate a proper amount of cogging torque compensation even in cases where components due to other factors than cogging torque (for example, components due to gravitational torque, etc.) are superimposed on a torque command being output during constant slow-speed feed operation. The motor control apparatus includes: a torque command monitoring unit which monitors a torque command when the motor is caused to operate at a constant speed; an approximation calculation unit which calculates a torque command approximation component by approximation from the torque command monitored over an interval equal to an integral multiple of the cogging torque period of the motor; a second torque command calculation unit which calculates a second torque command by subtracting the torque command approximation component from the torque command; a second torque command frequency analyzing unit which extracts frequency components, each at an integral multiple of the fundamental frequency of the cogging torque, by performing frequency analysis on the thus calculated second torque command; and a cogging compensation amount calculation unit which calculates the amount of cogging compensation from the amplitude and phase of the extracted frequency components.

摘要翻译： 即使在由于比齿槽转矩（例如由于重力转矩等构成的其他因素）的分量叠加在恒定速度下输出的转矩指令的情况下，也能够计算恰当量的齿槽转矩补偿量的电动机控制装置 速度进料操作。 电动机控制装置包括：转矩指令监视单元，其在电动机以恒定速度运行时监视转矩指令; 近似计算单元，其通过在等于电机的齿槽转矩周期的整数倍的间隔上监视的转矩指令近似计算转矩指令近似分量; 第二转矩指令计算单元，通过从所述转矩指令中减去所述转矩指令近似分量来计算第二转矩指令; 第二转矩指令频率分析单元，通过对所计算出的第二转矩指令进行频率分析，提取频率分量，每个频率成分以齿槽转矩的基频的整数倍; 以及齿槽补偿量计算单元，根据所提取的频率分量的振幅和相位来计算齿槽补偿量。

公开(公告)号：US08030878B2

公开(公告)日：2011-10-04

申请号：US12958690

申请日：2010-12-02

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Masakazu Niwa

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Masakazu Niwa

IPC分类号： H02P27/04

CPC分类号： H02H3/247 ,  G01R31/42 ,  H02H7/0833 ,  H02P29/00

摘要： A motor driving device that accurately achieves power failure detection according to a power failure tolerance with a relatively simple configuration. A counter input computing unit determines, as a counter input value, a value that is inversely proportional to the power failure tolerance determined from a voltage amplitude value and supplies the counter input value to a counter. The counter accumulates the input value at predetermined intervals and outputs an output value. A comparator determines that power failure occurs if the output of the counter 42 exceeds a threshold value.

摘要翻译： 一种电动机驱动装置，其以相对简单的结构，根据电力故障容限精确地实现停电检测。 计数器输入计算单元确定作为计数器输入值的与电压振幅值确定的停电容限成反比的值，并将计数器输入值提供给计数器。 计数器以预定间隔累积输入值并输出输出值。 如果计数器42的输出超过阈值，则比较器确定发生电源故障。

公开(公告)号：US20110234147A1

公开(公告)日：2011-09-29

申请号：US13035648

申请日：2011-02-25

申请人： Yasusuke IWASHITA ,  Tadashi Okita ,  Takahiro Akiyama ,  Geng Li

发明人： Yasusuke IWASHITA ,  Tadashi Okita ,  Takahiro Akiyama ,  Geng Li

IPC分类号： H02P23/00

CPC分类号： H02P21/0003 ,  B23Q15/08 ,  G05B2219/41319 ,  Y02P70/167

摘要： A controller controls the rotational speed of an induction motor, thereby controlling a spindle connected to the induction motor. Although an encoder for detecting the position of the spindle is mounted on the spindle, a speed detector is not attached to the induction motor. The speed of the induction motor is estimated from a spindle speed obtained by the encoder, and an excitation frequency command for the induction motor is determined based on the estimated speed.

摘要翻译： 控制器控制感应电动机的转速，从而控制连接到感应电动机的主轴。 虽然用于检测主轴位置的编码器安装在主轴上，但是速度检测器没有连接到感应电动机。 基于由编码器获得的主轴转速来估计感应电动机的速度，并且基于估计的速度来确定感应电动机的激励频率指令。

公开(公告)号：US08010302B2

公开(公告)日：2011-08-30

申请号：US12821740

申请日：2010-06-23

申请人： Tadashi Okita ,  Hiroyuki Kawamura ,  Junichi Tezuka ,  Kazuyuki Sugiyama

发明人： Tadashi Okita ,  Hiroyuki Kawamura ,  Junichi Tezuka ,  Kazuyuki Sugiyama

IPC分类号： G05B19/4097 ,  G06F19/00

CPC分类号： G05B19/409 ,  G05B2219/35349

摘要： First and second screens are set for a tool path display apparatus for displaying a path of the tip of a tool attached to a machine tool. The first screen displays the three-dimensional path of the tip of the tool obtained by synthesizing the position information of the drive axes of a 5-axis machine tool. The second screen displays the waveforms of the position deviations and current instructions of the drive axes in chronological order. When a part (line segment) of the three-dimensional path of the tip of the tool is selected on the first screen, the display attribute of the corresponding time area is changed on the second screen so that the time area can be identified.

摘要翻译： 第一和第二屏幕被设置用于显示附接到机床的工具的尖端的路径的刀具路径显示装置。 第一画面显示通过合成5轴机床的驱动轴的位置信息获得的刀具尖端的三维路径。 第二个屏幕按时间顺序显示驱动轴的位置偏差和当前指令的波形。 当在第一屏幕上选择工具尖端的三维路径的部分（线段）时，在第二屏幕上改变对应时间区域的显示属性，从而可以识别时间区域。

公开(公告)号：US08006538B2

公开(公告)日：2011-08-30

申请号：US11849543

申请日：2007-09-04

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Satoshi Ikai

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Satoshi Ikai

IPC分类号： B21J9/18

CPC分类号： B21D24/10 ,  G05B19/416 ,  G05B2219/42087 ,  G05B2219/45137

摘要： A control device, for a servo die cushion, by which the speed of a die cushion is prevented from largely deviating from the speed of a slide, whereby the press force between the slide and the die cushion is not significantly reduced. The control device includes a slide speed detector for detecting the speed of the slide, a die cushion speed detector for detecting the speed of the die cushion, and a die cushion speed commanding part for controlling the speed of the die cushion. When a tentative speed command of the die cushion is largely deviated from the detected slide speed, the command of the die cushion is corrected such that the absolute value thereof does not exceed the value calculated by adding the absolute value of the detected slide speed to a positive constant.

摘要翻译： 用于伺服模具缓冲器的控制装置，通过该控制装置防止模具缓冲垫的速度大大偏离滑动速度，由此滑块和模具缓冲垫之间的压力不会显着降低。 控制装置包括用于检测滑块的速度的滑动速度检测器，用于检测模具缓冲垫的速度的模具缓冲速度检测器，以及用于控制模具缓冲器的速度的模具缓冲速度指令部件。 当模具衬垫的暂定速度指令与检测到的滑动速度有很大偏差时，校正模具缓冲器的命令，使得其绝对值不超过通过将检测到的滑动速度的绝对值加到 正常数。

公开(公告)号：US07531981B2

公开(公告)日：2009-05-12

申请号：US11703797

申请日：2007-02-08

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Kenichi Takayama

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Kenichi Takayama

IPC分类号： G05B11/32

CPC分类号： G05B19/404

摘要： A controller for a servomotor capable of improving accuracy of positioning and quality of a machined surface by switching modes of correction of a position command or the like, and reducing a shock at the time of switching. A correction amount generating section obtains a correction amount based on a value of a correction factor such as machine temperature. When the external signal is in ON state, a position command or the like is corrected by the correction amount obtained by the correction amount generating section and sent via switches. A correction amount holding section holds the correction amount obtained by the correction amount generating section. When the external signal turns to OFF state, the connection of the switches is changed so that correction is performed by the correction amount held in the correction amount holding section. When the connection of the switches is changed, the correction amount does not change rapidly, so that the machine does not suffer a shock. In positioning, the external signal is turns to ON state, so that the positioning is carried out accurately by performing correction by the correction amount sent from the correction amount generating section. When a high-quality machined surface is required, the external signal is turned to OFF state so that the correction amount does not change to achieve improvement in the quality of a machined surface.

摘要翻译： 一种伺服电动机的控制器，其能够通过切换位置指令等的切换模式来提高加工面的定位精度和质量，并减少切换时的冲击。 校正量生成部根据机器温度等校正因子的值来求出校正量。 当外部信号处于接通状态时，通过由校正量产生部分获得的校正量来校正位置指令等并通过开关发送。 校正量保持部保持由校正量生成部获得的校正量。 当外部信号变为OFF状态时，改变开关的连接，从而通过校正量保持部中保持的校正量进行校正。 当开关的连接发生变化时，校正量不会迅速变化，因此机器不会受到冲击。 在定位中，外部信号变为接通状态，从而通过从校正量产生部分发送的校正量执行校正来精确地执行定位。 当需要高质量的加工表面时，外部信号变为断开状态，使得校正量不变，以实现加工表面的质量的提高。

公开(公告)号：US20090102409A1

公开(公告)日：2009-04-23

申请号：US12212058

申请日：2008-09-17

申请人： Tadashi OKITA ,  Yukio TOYOZAWA ,  Naoto SONODA

发明人： Tadashi OKITA ,  Yukio TOYOZAWA ,  Naoto SONODA

IPC分类号： G05B13/02

CPC分类号： G05B19/404 ,  G05B2219/42152 ,  G05B2219/50227

摘要： A control device for electric motors, capable of precisely moving one object by using two electric motors based on periodically repeated commands. The control device includes a first learning controller for calculating an amount of correction so that a positional deviation of a first electric motor is minimized, and a second learning controller for calculating an amount of correction so that a positional deviation of a second electric motor is minimized. The first and second learning controllers are independent from each other, and configured to minimize the positional deviation of the corresponding electric motor. The parameters set in the learning controllers, each defining the response of learning control of each electric motor, are equal to each other.

摘要翻译： 一种用于电动机的控制装置，能够基于周期性重复的命令，通过使用两个电动机来精确地移动一个物体。 控制装置包括第一学习控制器，用于计算第一电动机的位置偏差最小化的校正量;以及第二学习控制器，用于计算校正量，使得第二电动机的位置偏差最小化 。 第一和第二学习控制器彼此独立，并且被配置为使相应的电动机的位置偏差最小化。 在学习控制器中设置的每个电动机的学习控制响应的参数彼此相等。