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1. 发明授权

US09048733B2 Motor driving device having reactive current instruction generating unit 有权
标题翻译：具有无功电流指令生成部的电动机驱动装置
公开(公告)号：US09048733B2
公开(公告)日：2015-06-02
申请号：US13595042
申请日：2012-08-27
申请人： Yasusuke Iwashita , Hajime Ogawa
发明人： Yasusuke Iwashita , Hajime Ogawa
IPC分类号： H02P6/14 , H02M1/32 , H02P3/22 , H02M5/458 , H02P1/00 , H02P3/18 , H02P27/04 , B60W10/08 , B60W20/00 , B60L11/14 , G01R1/20 , H02P5/74 , H02P21/00 , H02M7/797 , H02M1/00
CPC分类号： H02M1/32 , H02M5/458 , H02M7/797 , H02M2001/008 , H02P3/22 , H02P5/74 , H02P21/36
摘要： A motor driving device includes a converter that converts an input alternating current into a direct current, an inverter that inverts the direct current output by the converter into an alternating current for driving a motor, a voltage detecting unit that detects a voltage on a direct current output side of the converter, and a numerical control unit that causes the inverter to output a reactive current to increase electric power consumed in the motor, when the voltage detected by the voltage detecting unit exceeds a predetermined threshold.
摘要翻译：电动机驱动装置包括将输入交流电转换为直流电的转换器，将由转换器输出的直流电转换成用于驱动电动机的交流电的逆变器，检测直流电压的电压检测单元输出侧，以及数值控制单元，当由电压检测单元检测到的电压超过预定阈值时，使得逆变器输出无功电流以增加电动机中消耗的电力。

2. 发明授权

US08901866B2 Motor drive apparatus equipped with energy storage unit 有权
标题翻译：电机驱动装置装有储能装置
公开(公告)号：US08901866B2
公开(公告)日：2014-12-02
申请号：US13471542
申请日：2012-05-15
申请人： Koujirou Sakai , Yasusuke Iwashita
发明人： Koujirou Sakai , Yasusuke Iwashita
IPC分类号： H02P27/00 , H02J3/32 , H02J1/16 , H02P3/18 , H02J3/30
CPC分类号： H02J3/30 , H02J1/16 , H02J3/32 , H02P3/18 , Y02E60/16 , Y10T307/625
摘要： A motor drive apparatus includes an AC/DC converter which converts AC power supplied from a power supply to DC power, a DC/AC converter which converts DC power to AC power and vice versa, a DC link unit which connects the DC side of the AC/DC converter to the DC side of the DC/AC converter and delivers the DC power from one to the other and vice versa, an energy storage unit which includes at least one capacitor storage unit and at least one flywheel storage unit each of which is connected to the DC link unit and stores or supplies the DC power, and an energy control unit which performs control so that the energy storage unit stores or supplies the DC power.
摘要翻译：一种电动机驱动装置，具备将从电源供给的交流电力转换成直流电的交流/直流转换器，将直流电变换成交流电的直流/交流变换器，反之亦然;直流侧连接单元， AC / DC转换器连接到DC / AC转换器的DC侧，并将DC电力从一个传送到另一个，反之亦然;一个能量存储单元，其包括至少一个电容器存储单元和至少一个飞轮存储单元，连接到DC链路单元并存储或提供DC电力;以及能量控制单元，其执行控制，使得能量存储单元存储或提供DC电力。

3. 发明授权

US08649130B2 Motor driving apparatus having fault diagnostic function 有权
标题翻译：具有故障诊断功能的电机驱动装置
公开(公告)号：US08649130B2
公开(公告)日：2014-02-11
申请号：US13025210
申请日：2011-02-11
申请人： Shinichi Horikoshi , Takashi Harada , Masatomo Shirouzu , Yasusuke Iwashita
发明人： Shinichi Horikoshi , Takashi Harada , Masatomo Shirouzu , Yasusuke Iwashita
IPC分类号： H02H3/00 , H02H7/08 , G01R31/02 , G01R31/34
CPC分类号： H02H7/0838 , G01R19/10 , H02H1/0038 , H02H3/105 , H02P29/0241 , H02P29/027
摘要： A motor driving apparatus capable of detecting during operation a ground fault and a phase-to-phase short circuit by distinguishing one from the other is provided while minimizing an increase in cost. The sum of three-phase AC currents supplied from a three-phase AC power supply to an AC/DC converter is detected by a current sensor. When overcurrent is detected by an overcurrent detector, if the sum of the currents detected by the current sensor is zero, it is determined that the fault is a phase-to-phase short circuit, but if the sum is not zero, it is determined that the fault is a ground fault.
摘要翻译：提供一种电动机驱动装置，其能够在操作期间通过将接地故障和相间短路彼此区分来检测，同时最小化成本增加。通过电流传感器检测从三相AC电源向AC / DC转换器提供的三相AC电流的总和。当由过电流检测器检测到过电流时，如果由电流传感器检测到的电流之和为零，则确定故障是相间短路，但是如果并非零，则确定故障是接地故障。

4. 发明授权

US08483865B2 Numerical controller with tool trajectory display function 有权
标题翻译：具有刀具轨迹显示功能的数控机床
公开(公告)号：US08483865B2
公开(公告)日：2013-07-09
申请号：US13020165
申请日：2011-02-03
申请人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
发明人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
IPC分类号： G06F19/00
CPC分类号： G05B19/404 , G05B2219/49203
摘要： Coordinate values of a tool center point is calculated by obtaining coordinate values at each time of respective drive axes driven by a numerical controller. A tool radius compensation vector connecting the calculated tool center point at each time and an actual machining point is obtained. Then, coordinate values of the actual machining point are calculated based on the calculated coordinate values of the tool center point and the obtained tool radius compensation vector, and the trajectory of the actual machining point is displayed on a display.
摘要翻译：通过在数值控制器驱动的各个驱动轴的每次获得坐标值来计算刀具中心点的坐标值。获得每次将计算出的刀具中心点与实际加工点连接的刀具半径补偿矢量。然后，基于计算出的刀具中心点的坐标值和获得的刀具半径补偿矢量来计算实际加工点的坐标值，并且将实际加工点的轨迹显示在显示器上。

5. 发明申请

US20120068637A1 MOTOR DRIVING APPARATUS 有权
标题翻译：电机驱动装置
公开(公告)号：US20120068637A1
公开(公告)日：2012-03-22
申请号：US13215563
申请日：2011-08-23
申请人： Yasusuke Iwashita , Shinichi Horikoshi , Takashi Harada , Masakazu Niwa , Koujirou Sakai
发明人： Yasusuke Iwashita , Shinichi Horikoshi , Takashi Harada , Masakazu Niwa , Koujirou Sakai
IPC分类号： H02P3/14
CPC分类号： H02P3/18 , H02P3/14 , H02P23/20
摘要： During motor acceleration control period that starts at time T1, if power supply output or supply current exceeds a predetermined level at time T2, PWM control in a PWM converter is turned off until a deceleration control period of T3 to T4 ends. As a result, DC link voltage (voltage of a power storage device) at the start of the deceleration control at time T3 drops to provide space for storing regenerative power; since the PWM control in the PWM converter is off during the deceleration control period, the regenerative power can be stored into the power storage device and reused in the next control cycle.
摘要翻译：在时刻T1开始的电动机加速控制期间，如果电力供应输出或电源电流在时间T2超过预定电平，则PWM转换器中的PWM控制被截止，直到T3至T4的减速控制周期结束。结果，在时刻T3的减速控制开始时的直流链路电压（蓄电装置的电压）下降，提供存储再生电力的空间; 由于PWM转换器中的PWM控制在减速控制期间关闭，所以再生功率可以存储到蓄电装置中并在下一个控制周期中重新使用。

6. 发明申请

US20110234146A1 CONTROLLER OF SPINDLE PROVIDED WITH ENCODER 有权
标题翻译：编码器提供的主轴控制器
公开(公告)号：US20110234146A1
公开(公告)日：2011-09-29
申请号：US13030252
申请日：2011-02-18
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： G05D13/64 , B23Q17/10 , G05B19/404 , G05B2219/41136 , G05B2219/41319 , G05B2219/49254
摘要： The controller controls a spindle connected to an induction motor via a belt by controlling the rotational velocity of the induction motor. The spindle has an encoder attached thereto for detecting the position of the spindle, but the induction motor does not have a velocity detector attached thereto. The velocity of the induction motor is estimated from the spindle velocity obtained from output of the encoder, and slip of the belt is detected based on the estimated velocity of the induction motor. When occurrence of slip of the belt is detected, the estimated velocity of the induction motor will not be used for the control of the induction motor.
摘要翻译：控制器通过控制感应电机的旋转速度通过皮带控制连接到感应电机的主轴。主轴具有附接到其上的编码器，用于检测主轴的位置，但是感应电动机没有连接有速度检测器。感应电动机的速度是根据从编码器的输出获得的主轴速度来估计的，并且基于感应电动机的估计速度来检测皮带的滑移。当检测到皮带的滑动发生时，感应电动机的估计速度将不被用于感应电动机的控制。

7. 发明授权

US08026689B2 Control device for machine tool 有权
标题翻译：机床控制装置
公开(公告)号：US08026689B2
公开(公告)日：2011-09-27
申请号：US12761191
申请日：2010-04-15
申请人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
发明人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
IPC分类号： G05B11/01
CPC分类号： G05B19/416 , G05B2219/34314
摘要： A control device for a machine tool including a feed axis driving motor; a first power consumption calculating portion calculating power consumption of the feed axis driving motor; a second power consumption calculating portion calculating power consumption of equipment adapted to be operated by constant power; and a motor control portion determining a target time constant correlated with at least one of acceleration time and deceleration time of the feed axis driving motor, based on a summation of the power consumption calculated by the first power consumption calculating portion and the power consumption calculated by the second power consumption calculating portion, and controlling the feed axis driving motor based on the target time constant.
摘要翻译：一种用于机床的控制装置，包括进给轴驱动电机; 计算进给轴驱动电机的功耗的第一功耗计算部; 第二功率消耗计算部分，用于计算适于由恒定功率运行的设备的功耗; 以及电动机控制部，其基于由所述第一功耗计算部计算出的功率消耗和由所述第一功耗计算部计算出的功率消耗的总和与由所述第一功耗计算部计算出的功耗的乘积和由第二功率消耗计算部分，并且基于目标时间常数来控制进给轴驱动电动机。

8. 发明申请

US20110202167A1 NUMERICAL CONTROLLER WITH TOOL TRAJECTORY DISPLAY FUNCTION 有权
标题翻译：具有工具轨迹显示功能的数控系统
公开(公告)号：US20110202167A1
公开(公告)日：2011-08-18
申请号：US13020165
申请日：2011-02-03
申请人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
发明人： Yasusuke Iwashita , Tadashi Okita , Junichi Tezuka
IPC分类号： G05B19/19
CPC分类号： G05B19/404 , G05B2219/49203
摘要： Coordinate values of a tool center point is calculated by obtaining coordinate values at each time of respective drive axes driven by a numerical controller. A tool radius compensation vector connecting the calculated tool center point at each time and an actual machining point is obtained. Then, coordinate values of the actual machining point are calculated based on the calculated coordinate values of the tool center point and the obtained tool radius compensation vector, and the trajectory of the actual machining point is displayed on a display.
摘要翻译：通过在数值控制器驱动的各个驱动轴的每次获得坐标值来计算刀具中心点的坐标值。获得每次将计算出的刀具中心点与实际加工点连接的刀具半径补偿矢量。然后，基于计算出的刀具中心点的坐标值和获得的刀具半径补偿矢量来计算实际加工点的坐标值，并且将实际加工点的轨迹显示在显示器上。

9. 发明授权

US07932689B2 Motor drive system for driving motor provided with a plurality of windings 有权
标题翻译：用于具有多个绕组的驱动电动机的电动机驱动系统
公开(公告)号：US07932689B2
公开(公告)日：2011-04-26
申请号：US12643270
申请日：2009-12-21
申请人： Yasusuke Iwashita , Tadashi Okita , Yukio Toyozawa , Kazuomi Maeda
发明人： Yasusuke Iwashita , Tadashi Okita , Yukio Toyozawa , Kazuomi Maeda
IPC分类号： G05B11/01
CPC分类号： H02P6/08
摘要： A motor drive system is provided with a plurality of axis control parts for outputting PWM commands using a position command, a plurality of current supply parts which supply current to the respective windings based on the PWM commands of the respective axis control parts, and which are connected to the respective windings, a motor position detector for outputting a signal of a rotor position of the motor, a first signal supply part for supplying the output signal to one current supply part of the plurality of current supply parts, and a second signal supply part for supplying the signal supplied through the first signal supply part to an axis control part corresponding to one current supply part, and the corresponding axis control part outputs a PWM command based on the signal supplied from the one current supply part through the second signal supply part to the corresponding axis control part and the position command, and the remaining axis control part outputs the PWM command based on the signal supplied from the corresponding axis control part to the remaining axis control parts and the position command. Thereby, a motor drive system capable of driving a plurality of inverters can be made simple.
摘要翻译：电动机驱动系统设有多个轴控制部件，用于使用位置指令输出PWM指令;多个电流供应部件，其基于各个轴控制部件的PWM指令向相应的绕组提供电流，连接到各个绕组的电动机位置检测器，用于输出电动机的转子位置的信号的电动机位置检测器，用于将输出信号提供给多个电流供应部分的一个电流供应部分的第一信号提供部分，以及第二信号供应部分，用于将通过第一信号提供部分提供的信号提供给对应于一个电流供应部分的轴控制部分，并且相应的轴控制部分基于通过第二信号提供从一个电流供应部分提供的信号输出PWM命令部分到相应的轴控制部分和位置指令，剩下的轴控制部分基于PWM命令输出将从相应的轴控制部分提供的信号转到剩余的轴控制部分和位置指令。由此，可以使能够驱动多个逆变器的电动机驱动系统简单。

10. 发明授权

US07863853B2 Electric motor control device 有权
标题翻译：电动机控制装置
公开(公告)号：US07863853B2
公开(公告)日：2011-01-04
申请号：US12132103
申请日：2008-06-03
申请人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa , Tomohisa Tsutsumi
发明人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa , Tomohisa Tsutsumi
IPC分类号： H02P1/26
CPC分类号： H02P21/0003 , H02P21/08 , H02P21/22
摘要： An excitation current processor of a current controller processes the excitation current corresponding to the magnetic flux instruction from the magnetic flux instruction processor. It multiplies this excitation current with a boost coefficient to obtain an excitation current instruction. Here, the boost coefficient is determined based on the difference obtained by subtracting the magnetic flux estimation value processed by the magnetic flux processor based on the excitation current feedback from the voltage conversion device from the magnetic flux instruction input from the magnetic flux instruction processor. Further, the boost coefficient can be found from the function of time from the start of the rise of the magnetic flux.
摘要翻译：电流控制器的励磁电流处理器处理与来自磁通指令处理器的磁通指令对应的励磁电流。它将该励磁电流与升压系数相乘以获得励磁电流指令。这里，根据从磁通指令处理器输入的磁通指令，基于从电压变换装置的励磁电流反馈减去由磁通量处理器处理的磁通量估计值而得到的差值来确定升压系数。此外，可以从磁通量的上升开始的时间的函数中求出升压系数。

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