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1. 发明授权

US07719218B2 Motor control apparatus 有权
标题翻译：电机控制装置
公开(公告)号：US07719218B2
公开(公告)日：2010-05-18
申请号：US11873653
申请日：2007-10-17
申请人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa , Geng Li
发明人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa , Geng Li
IPC分类号： H02P7/00
CPC分类号： G05B19/4065 , B23Q17/09 , G05B2219/37228 , G05B2219/37246 , G05B2219/37256 , G05B2219/42295 , G05B2219/42304
摘要： A motor control apparatus for computing or outputting motor load information, comprises: a storage unit which stores a function or table obtained in advance based on parameters used for the computation of the load information and on an actually measured value of a motor output or motor torque; and a load meter computing unit which computes the load information from the function or table stored in the storage unit by using the parameters used for the computation of the load information. With the above configuration, the load meter is computed in such a manner as to accurately indicate the load condition of a motor in real time over the entire speed range of the motor including the nonlinear control region of the motor, and the motor is controlled using the thus computed value or the computed value is displayed on a display unit.
摘要翻译：一种用于计算或输出电动机负载信息的电动机控制装置，包括：存储单元，其基于用于负载信息的计算的参数和电动机输出或电动机转矩的实际测量值来存储预先获得的功能或表 ; 以及负载表计算单元，其通过使用用于计算负载信息的参数，从存储在存储单元中的功能或表计算负载信息。通过上述结构，计算负载计量器，以便在包括电动机的非线性控制区域的电动机的整个速度范围内实时准确地指示电动机的负载状态，并且使用这样计算的值或计算值被显示在显示单元上。

2. 发明申请

US20060186849A1 Servo control device and method of adjusting servo system 有权
标题翻译：伺服控制装置及伺服系统调整方法
公开(公告)号：US20060186849A1
公开(公告)日：2006-08-24
申请号：US11356291
申请日：2006-02-17
申请人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
发明人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
IPC分类号： G05B19/33
CPC分类号： G05B19/406 , G05B2219/35292 , G05B2219/35338 , G05B2219/37078 , G05B2219/37619
摘要： The invention relates to a numerical control (NC) device, and provides a servo control device that displays, by a two-dimensional image, evaluation of control precision of a servo system, and that can adjust the servo system according to a visual method, and provides a method of adjusting the servo system. The control device includes: an instruction unit that instructs a position instruction having periodicity; a unit that records a track of position data based on a position feedback of a servo system according to the position instruction; and a first drawing unit that draws position data based on the position feedback, data before a quarter cycle or after a quarter cycle of the position data or position data based on the position instruction before a quarter cycle or after a quarter cycle, on a two-dimensional plane including orthogonal two axes, as the axis data of the orthogonal two axes respectively.
摘要翻译：本发明涉及一种数控装置，提供一种伺服控制装置，其通过二维图像显示伺服系统的控制精度的评价，并且可以根据目视方式调整伺服系统，并提供一种调整伺服系统的方法。控制装置包括：指示具有周期性的位置指令的指令单元; 根据位置指令，基于伺服系统的位置反馈来记录位置数据的轨迹的单元; 以及第一绘图单元，其基于位置反馈，在四分之一周期之前的数据或基于在四分之一周期之前或四分之一周期之后的位置指令的位置数据或位置数据的四分之一周期之后的位置数据包括正交两轴的三维平面分别作为正交两轴的轴数据。

3. 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。

4. 发明授权

US07368887B2 Servo control device and method of adjusting servo system 有权
标题翻译：伺服控制装置及伺服系统调整方法
公开(公告)号：US07368887B2
公开(公告)日：2008-05-06
申请号：US11356291
申请日：2006-02-17
申请人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
发明人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
IPC分类号： G05B11/32
CPC分类号： G05B19/406 , G05B2219/35292 , G05B2219/35338 , G05B2219/37078 , G05B2219/37619
摘要： A servo control device that displays, by a two-dimensional image, evaluation of control precision of a servo system, includes: an instruction unit that instructs a position instruction having periodicity; a unit that records a track of position data based on a position feedback of a servo system according to the position instruction; and a first drawing unit that draws position data based on the position feedback, data before a quarter cycle or after a quarter cycle of the position data or position data based on the position instruction before a quarter cycle or after a quarter cycle, on a two-dimensional plane including orthogonal two axes, as the axis data of the orthogonal two axes respectively.
摘要翻译：一种通过二维图像显示伺服系统的控制精度的评估的伺服控制装置包括：指示具有周期性的位置指令的指令单元; 根据位置指令，基于伺服系统的位置反馈来记录位置数据的轨迹的单元; 以及第一绘图单元，其基于位置反馈，在四分之一周期之前的数据或基于在四分之一周期之前或四分之一周期之后的位置指令的位置数据或位置数据的四分之一周期之后的位置数据包括正交两轴的三维平面分别作为正交两轴的轴数据。

5. 发明授权

US07446497B2 Fixed-position stop control apparatus for rotation shaft 有权
标题翻译：旋转轴固定位置停止控制装置
公开(公告)号：US07446497B2
公开(公告)日：2008-11-04
申请号：US11609880
申请日：2006-12-12
申请人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
发明人： Yasusuke Iwashita , Takahiro Akiyama , Masakazu Niwa
IPC分类号： G05B11/18
CPC分类号： G05B19/19 , G05B2219/42104
摘要： A fixed-position stop control apparatus (10) includes: a move-instruction generating means (22) for generating a move instruction for each control cycle; a position loop control means (25) for position controlling a rotation shaft (61) for each control cycle according to the move instruction generated by the move-instruction generating means; and a speed loop control means (35) for speed controlling the rotation shaft according to one of a speed instruction generated by a higher level control apparatus (45) and a predetermined speed instruction, thereby switching the speed control of the rotation shaft by the speed loop control means to the position control of the rotation shaft by the position loop control means. In this fixed-position stop control apparatus, the move instruction generated by the move-instruction generating means has acceleration smaller than the acceleration corresponding to the acceleration and deceleration ability of the rotation shaft. With this arrangement, time required for the rotation shaft to stop at a fixed position can be decreased.
摘要翻译：固定位置停止控制装置（10）包括：移动指令生成装置（22），用于生成每个控制周期的移动指令; 位置循环控制装置，用于根据由所述移动指令产生装置产生的移动指令对每个控制循环进行位置控制旋转轴; 以及用于根据由上位控制装置（45）产生的速度指令和预定速度指令之一速度控制旋转轴的速度环控制装置（35），从而将旋转轴的速度控制切换到速度循环控制装置通过位置环控制装置转动到旋转轴的位置控制。在该固定位置停止控制装置中，由移动指令发生装置产生的移动指令的加速度小于与旋转轴的加速和减速能力对应的加速度。通过这种布置，可以减少旋转轴在固定位置停止所需的时间。

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。

8. 发明授权

US08242734B2 Controller of spindle provided with encoder 有权
标题翻译：带编码器的主轴控制器
公开(公告)号：US08242734B2
公开(公告)日：2012-08-14
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。

9. 发明申请

US20050007058A1 Spindle motor drive controller 审中-公开
标题翻译：主轴电机驱动控制器
公开(公告)号：US20050007058A1
公开(公告)日：2005-01-13
申请号：US10885129
申请日：2004-07-07
申请人： Yasusuke Iwashita , Takahiro Akiyama , Yuuki Morita
发明人： Yasusuke Iwashita , Takahiro Akiyama , Yuuki Morita
IPC分类号： H02P6/00 , H02P27/02 , H02P27/04 , H02P27/08 , G05B11/28
CPC分类号： H02P27/026 , H02P6/28 , H02P27/04 , H02P27/08
摘要： The PWM frequency to be input to a current controller that generates voltage commands for a spindle motor inverter unit is switched between multiple levels according to a current feedback value to suppress heat generation in the spindle motor and drive unit.
摘要翻译：输入到主电动机逆变器单元产生电压指令的电流控制器的PWM频率根据电流反馈值在多个电平之间切换，以抑制主轴电动机和驱动单元中的发热。

10. 发明申请

US20050156555A1 Method for detecting angular difference and apparatus for controlling synchronous motor 审中-公开
标题翻译：角度差检测方法及同步电机控制装置
公开(公告)号：US20050156555A1
公开(公告)日：2005-07-21
申请号：US11034875
申请日：2005-01-14
申请人： Yasusuke Iwashita , Takahiro Akiyama , Junichi Tezuka
发明人： Yasusuke Iwashita , Takahiro Akiyama , Junichi Tezuka
IPC分类号： H02P6/16 , H02P6/00 , H02P21/00 , H02P25/02 , H02P5/06
CPC分类号： H02P3/025 , H02P21/36 , H02P25/03
摘要： Disclosed is a method for detecting an angular difference between a motor magnetic pole position and an encoder reference position in a permanent magnet synchronous motor equipped with an incremental encoder, wherein a DC current command for supplying a monotonically decreasing DC current is applied to the permanent magnet motor for DC excitation, and the angular difference is detected by detecting an amount of rotor movement due to the DC excitation by using the incremental encoder. By applying a DC excitation current command for supplying a monotonically decreasing DC current rather than supplying a DC current of constant magnitude as in the prior art, it becomes possible, without estimating the initial magnetic pole position, to shorten the time required for the motor rotor to stop, while preventing the phenomenon in which the rotor does not stop at the magnetic pole position but oscillates around that position.
摘要翻译：公开了一种用于检测装备有增量式编码器的永磁同步电动机中的电动机磁极位置与编码器基准位置之间的角度差的方法，其中用于提供单调递减的DC电流的DC电流指令被施加到永磁体用于DC励磁的电动机，并且通过使用增量编码器检测由于DC激励引起的转子运动量来检测角度差异。通过施加用于提供单调递减的DC电流的DC励磁电流指令而不是像现有技术那样提供恒定幅度的DC电流，可以在不估计初始磁极位置的情况下缩短电动机转子所需的时间停止，同时防止转子不停在磁极位置但在该位置周围振荡的现象。

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