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41. 发明授权

US08030878B2 Motor driving device having power failure detection function 有权
标题翻译：具有断电检测功能的电机驱动装置
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。

42. 发明申请

US20110234147A1 CONTROLLER FOR SPINDLE WITH ENCODER 审中-公开
标题翻译：带编码器的主轴控制器
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。

43. 发明授权

US07531981B2 Controller for servomotor 有权
标题翻译：伺服电机控制器
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。

44. 发明申请

US20080164834A1 Device and method for controlling machine tool 有权
标题翻译：机床控制装置及方法
公开(公告)号：US20080164834A1
公开(公告)日：2008-07-10
申请号：US12003818
申请日：2008-01-02
申请人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Chengbin Ma
发明人： Yasusuke Iwashita , Tadashi Okita , Hiroyuki Kawamura , Chengbin Ma
IPC分类号： G05B19/25
CPC分类号： G05B19/404 , G05B2219/49177 , G05B2219/49313 , G05B2219/50174
摘要： A device for controlling a feed motion of a feed control axis and a rotary motion of a rotary control axis, both axes being provided in a machine tool so that the rotary control axis is fed along the feed control axis. The device includes an interference estimating section estimating an interference generated between the feed control axis and the rotary control axis, based on a position command instructed to at least one of the feed control axis and the rotary control axis and a position and mass information of an eccentric load carried by the rotary control axis; and a command correcting section correcting a current command given to at least one of the feed control axis and the rotary control axis, based on the interference estimated by the interference estimating section.
摘要翻译：用于控制进给控制轴的进给运动和旋转控制轴的旋转运动的装置，两个轴设置在机床中，使得旋转控制轴沿进给控制轴进给。该装置包括：干涉估计部，基于指示给进给控制轴和旋转控制轴的至少一个的位置指令，以及基于所述进给控制轴和旋转控制轴的位置和质量信息，估计在所述进给控制轴与所述旋转控制轴之间产生的干扰由旋转控制轴承载的偏心负载; 以及命令校正部，基于由所述干扰估计部估计出的干扰，校正给予所述进给控制轴和所述旋转控制轴中的至少一个的电流指令。

45. 发明授权

US06806674B2 Control device for driving and controlling a servomotor 失效
标题翻译：用于驱动和控制伺服电机的控制装置
公开(公告)号：US06806674B2
公开(公告)日：2004-10-19
申请号：US10158143
申请日：2002-05-31
申请人： Yasusuke Iwashita , Tadashi Okita
发明人： Yasusuke Iwashita , Tadashi Okita
IPC分类号： G05B1910
CPC分类号： G05B19/408
摘要： Parameter set 1: T1a, T2a, Fa, Aa, parameter set 2: T1b, T2b, Fb, Ab, and parameter set 3: T1c, T2c, Fc, Ac, which consist of parameters having discrete values in three stages (large, medium and small) are prepared in the memory for example of the CNC 1 or the personal computer 3. For a given parameter set, the set giving priority to accuracy (S=0) is indicated by P (T1p, T2p, Fp, Ap), while the set giving priority to speed (S=1) is indicated by Q (T1q, T2q, Fq, Ag), and interpolation is performed and the parameter set Y=(1−S)×P+S×Q is obtained. The CNC 2 creates operating commands based on set Y and outputs these to the servo control section 2.
摘要翻译：参数集1：T1a，T2a，Fa，Aa，参数集2：T1b，T2b，Fb，Ab和参数集3：T1c，T2c，Fc，Ac，由三个阶段（大，在例如CNC 1或个人计算机3的存储器中准备了对于给定的参数集合，给出精度优先权的集合（S = 0）由P（T1p，T2p，Fp，Ap ），而通过Q（T1q，T2q，Fq，Ag）表示赋予速度优先权（S = 1）的集合，并且执行插值，并且获得参数集Y =（1-S）×P + S×Q。 CNC 2根据集合Y创建操作命令，并将其输出到伺服控制部分2。

46. 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。

47. 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。

48. 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。

49. 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。

50. 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。

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