公开(公告)号：US06310457B1

公开(公告)日：2001-10-30

申请号：US09488017

申请日：2000-01-20

申请人： Yasusuke Iwashita ,  Tadashi Okita

发明人： Yasusuke Iwashita ,  Tadashi Okita

IPC分类号： G05B1925

CPC分类号： G05B19/232

摘要： When contents of a program for machining to be executed by a servomotor indicate a cutting mode, a current command is generated by performing speed loop processing by using a speed loop gain for cutting mode, and moreover, a voltage command to a servo amplifier is generated by performing proportional-plus-integral (PI) current loop processing in accordance with the generated current command. On the other hand, when the contents of the machining program indicate a positioning mode, a current command is generated by performing speed loop processing by using a speed loop gain for positioning mode, and moreover, a voltage command to the servo amplifier is generated by performing integral-plus-proportional (I-P) current loop processing in accordance with the generated current command.

摘要翻译： 当由伺服电机执行的加工程序的内容表示切割模式时，通过使用切削模式的速度环增益进行速度环处理，生成电流指令，此外，产生对伺服放大器的电压指令 通过根据所产生的电流指令执行比例加积分（PI）电流回路处理。 另一方面，当加工程序的内容指示定位模式时，通过使用用于定位模式的速度环增益执行速度环处理来产生电流指令，此外，通过以下方式产生对伺服放大器的电压指令： 根据生成的电流指令执行积分加比例（IP）电流回路处理。

公开(公告)号：US5602347A

公开(公告)日：1997-02-11

申请号：US335879

申请日：1994-11-15

申请人： Shunsuke Matsubara ,  Yasusuke Iwashita ,  Tadashi Okita

发明人： Shunsuke Matsubara ,  Yasusuke Iwashita ,  Tadashi Okita

IPC分类号： B23Q17/09 ,  G05B19/4065 ,  G06F15/00

CPC分类号： G05B19/4065 ,  G05B2219/37252 ,  G05B2219/37285 ,  G05B2219/41368 ,  G05B2219/41376 ,  G05B2219/41379

摘要： A method for estimating a load acting on a machine tool and controlling a life of the machine tool based on the estimated load. When predetermined machining is effected on a predetermined workpiece, a disturbance load torque acting on a motor for a spindle or a motor for a feed shaft is estimated by a disturbance estimating observer. When the estimated disturbance load becomes not lower than a set reference value, a timer is reset and started. If the estimated disturbance load torque is kept not smaller than the set reference value until the timer reaches a predetermined set time, a tool change command is issued to stop the machining. Since the tool life is determined in accordance with the magnitude of the load acting on the tool, the tool life is controlled objectively and accurately.

摘要翻译： PCT No.PCT / JP94 / 00336 Sec。 371日期：1994年11月15日 102（e）1994年11月15日日期PCT 1994年3月2日PCT公布。 公开号WO94 / 21425 日期1994年9月29日一种用于估计作用在机床上的负载并基于估计的负载来控制机床的寿命的方法。 当在预定的工件上进行预定的加工时，通过扰动估计观察器来估计作用于用于主轴的马达或用于进给轴的马达的扰动载荷转矩。 当估计的扰动负载变得不低于设定的参考值时，定时器被复位并启动。 如果估计的扰动负载转矩保持在设定的基准值以上，直到定时器达到预定的设定时间，则发出刀具更换指令以停止加工。 由于刀具寿命根据作用在刀具上的负载的大小来确定，因此客观准确地控制刀具寿命。

公开(公告)号：US5157597A

公开(公告)日：1992-10-20

申请号：US571581

申请日：1990-08-14

申请人： Yasusuke Iwashita

发明人： Yasusuke Iwashita

IPC分类号： C07C275/26 ,  G05B5/01 ,  G05B13/02

CPC分类号： C07C275/26 ,  G05B13/024 ,  G05B5/01

摘要： Method for automatically detecting oscillation of a servo system, and for rapidly, correctly and automatically adjusting a speed loop gain thereof.The servo system is operated with the position loop gain set to a large value, to rotate a motor in forward and reverse directions in an oscillating fashion. In an oscillation detection process, various frequency components of a speed signal (Vt) are repeatedly derived by Fourier transformation while the speed loop gains (k1, k2) are increased, and a main oscillation component (fmax) having a maximum amplitude among the frequency components is repeatedly determined (201, 202), and when the main oscillation component has rapidly increased (204, 209), it is determined that an oscillation of the servo system attributable to the resonance of a mechanical system has occurred and a warning is displayed. In a gain adjustment process, if the main oscillation component assumes a value close to a reference frequency (fa) during the motor oscillation in an integral-plus-proportional control or proportional-plus-integral control mode while the speed loop gain is changed, the loop gain and control mode (P) at that time are fixedly set (303), and if the main oscillation component does not fall in the vicinity of the reference frequency in the proportional-plus-integral control, a loop gain derived based on the upper limit cut-off frequency (f.sub.lim) is settled (311).

公开(公告)号：US08633663B2

公开(公告)日：2014-01-21

申请号：US13494087

申请日：2012-06-12

申请人： Naoto Sonoda ,  Yasusuke Iwashita

发明人： Naoto Sonoda ,  Yasusuke Iwashita

IPC分类号： H02P6/12

CPC分类号： H02P29/02 ,  H02P29/032

摘要： An estimated torque constant calculation unit calculates an estimated torque constant relating to the permanent magnet synchronous motor from a current representative value and an acceleration representative value acquired from a plurality of current values and a plurality of acceleration values in the same operation state over a plurality of periods of a sinusoidal command signal and a predetermined inertia relating to the permanent magnet synchronous motor. A demagnetization detection unit detects whether or not irreversible demagnetization has occurred in the permanent magnet of the permanent magnet synchronous motor based on a difference between the estimated torque constant and a predetermined torque constant relating to the permanent magnet synchronous motor.

摘要翻译： 估计转矩常数计算单元从多个电流值和相同运行状态下的多个加速度值中获取的当前代表值和从多个加速度值获得的加速度代表值，计算与永磁同步电动机有关的估计转矩常数 与永磁同步电动机相关的正弦指令信号和预定惯量的周期。 退磁检测单元基于估计转矩常数和与永磁同步电动机相关的预定转矩常数之间的差来检测永磁同步电动机的永久磁铁中是否发生不可逆退磁。

公开(公告)号：US08415906B2

公开(公告)日：2013-04-09

申请号：US13215499

申请日：2011-08-23

申请人： Yasusuke Iwashita ,  Masakazu Niwa ,  Takashi Harada ,  Koujirou Sakai ,  Shinichi Horikoshi

发明人： Yasusuke Iwashita ,  Masakazu Niwa ,  Takashi Harada ,  Koujirou Sakai ,  Shinichi Horikoshi

IPC分类号： H02P3/14 ,  H02P3/18

CPC分类号： H02M5/4585 ,  H02P3/14 ,  H02P6/085 ,  H02P6/28 ,  H02P7/281

摘要： When the output of motor reaches or exceeds a predetermined value during acceleration of the motor, the control target value of the DC link voltage which is the voltage of a power storage device is gradually lowered in corresponding relationship to the motor output. When the motor enters a constant speed control mode, the DC link control target value is maintained at a constant level. When the motor enters a deceleration control mode, the DC link control target value is gradually raised in corresponding relationship to the motor output, and regenerative power is recovered by the power storage device and reused in the next control cycle.

摘要翻译： 当电动机的加速期间电动机的输出达到或超过预定值时，作为蓄电装置的电压的直流母线电压的控制目标值与电动机输出相对应地逐渐降低。 当电机进入恒速控制模式时，直流链路控制目标值保持恒定。 当电动机进入减速控制模式时，直流母线控制目标值与电动机输出相对应地逐渐升高，再生电力由蓄电装置恢复并在下一个控制周期中重新使用。

公开(公告)号：US07956568B2

公开(公告)日：2011-06-07

申请号：US12329062

申请日：2008-12-05

申请人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Yuuya Ueno

发明人： Yasusuke Iwashita ,  Tadashi Okita ,  Hiroyuki Kawamura ,  Yuuya Ueno

IPC分类号： G05D23/275

CPC分类号： H02P7/2855 ,  H02P23/16 ,  H02P29/00

摘要： A servo motor controller having: a frequency identification section that performs analysis based on a frequency response method and identifies the frequency of a disturbance exhibiting a specified phase lag; an input/output gain identification section that identifies the input/output gain at the frequency identified by the frequency identification section; and a magnification factor resetting section that resets an adjustment magnification factor by performing a specified operation on a ratio between the identified input/output gain and a specified target value of the input/output gain.

摘要翻译： 一种伺服电动机控制器，具有：频率识别部，其基于频率响应方式进行分析，并识别表现出规定的相位滞后的干扰的频率; 输入/输出增益识别部分，其识别由频率识别部分识别的频率处的输入/输出增益; 以及放大倍率复位部，其通过对所识别的输入/输出增益与输入/输出增益的指定目标值之间的比率执行指定的操作来重置调整放大系数。

公开(公告)号：US20110063122A1

公开(公告)日：2011-03-17

申请号：US12832209

申请日：2010-07-08

申请人： Shunsuke MATSUBARA ,  Yasusuke Iwashita ,  Shinichi Horikoshi ,  Akira Hirai ,  Hiroyasu Sato

发明人： Shunsuke MATSUBARA ,  Yasusuke Iwashita ,  Shinichi Horikoshi ,  Akira Hirai ,  Hiroyasu Sato

IPC分类号： G08B21/00

CPC分类号： G05B19/406 ,  G05B2219/34455 ,  G05B2219/34465 ,  G05B2219/37343 ,  G05B2219/37375 ,  G05B2219/37435 ,  G07C3/08

摘要： Signals from a plurality of sensors (vibration sensors, temperature sensors, and humidity sensors) disposed at places on a machine are input through a communication circuit to a numerical controller that controls the machine. The numerical controller uses vibration information, temperature information and humidity information obtained from these sensors to determine whether the machine is in an abnormal state.

摘要翻译： 设置在机器上的多个传感器（振动传感器，温度传感器和湿度传感器）的信号通过通信电路输入到控制机器的数值控制器。 数值控制器使用从这些传感器获得的振动信息，温度信息和湿度信息来确定机器是否处于异常状态。

公开(公告)号：US20100181955A1

公开(公告)日：2010-07-22

申请号：US12566827

申请日：2009-09-25

申请人： Kazuomi MAEDA ,  Yukio Toyozawa ,  Yasusuke Iwashita

发明人： Kazuomi MAEDA ,  Yukio Toyozawa ,  Yasusuke Iwashita

IPC分类号： G05B15/02 ,  G05B19/404

CPC分类号： G05B19/404 ,  G05B2219/41059 ,  G05B2219/41138 ,  G05B2219/41264 ,  G05B2219/41265 ,  G05B2219/42063

摘要： In position tandem control in which one movable member is driven by two motors, an output of the integral element of the velocity control unit in the control system for one motor is copied to the integral element of the velocity control unit in the control system for the other motor. A preload is added to a torque command output from each of the velocity control units in the motor control systems for two motors so that torques in mutually opposite directions are generated to suppress backlash between gears.

摘要翻译： 在其中一个可动构件由两个电动机驱动的位置串联控制中，用于一个电动机的控制系统中的速度控制单元的积分元件的输出被复制到控制系统中的速度控制单元的积分元件 其他电机。 从用于两个电动机的电动机控制系统中的每个速度控制单元输出的转矩指令加载预加载，从而产生相反方向的转矩，以抑制齿轮之间的间隙。

公开(公告)号：US07757526B2

公开(公告)日：2010-07-20

申请号：US11857620

申请日：2007-09-19

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： B21C51/00

CPC分类号： B21D24/02 ,  G05B19/237 ,  G05B2219/41251 ,  G05B2219/45143

摘要： A method for changing a force control gain expressed as a ratio of force error to velocity command value in a control circuit performing a force control of a servo motor driving a die cushion disposed opposite to a slide in a press machine. The method includes: obtaining a difference between a displacement of the slide and a displacement of the die cushion in a state in which the slide and the die cushion collide with and are exerting force on each other; detecting the force when the difference of the displacements is obtained; calculating a spring constant of a structural portion based on a proportionality between the difference of the displacements and the force, when regarding the structural portion including the slide and the die cushion as an elastic structure; and changing the force control gain based on the spring constant using a fixed proportionality that exists between the force control gain and a reciprocal of the spring constant.

摘要翻译： 一种用于在执行对在压机中与滑块相对设置的模座的驱动伺服电动机的力控制的控制电路中，改变表示为力误差与速度指令值的比的力控制增益的方法。 该方法包括：在滑块和模座碰撞并且彼此施加力的状态下，获得滑块的位移和模具垫的位移之间的差异; 当获得位移的差异时检测力; 当关于包括滑动件和模具衬垫的结构部分作为弹性结构时，基于位移的差异和力之间的比例来计算结构部分的弹簧常数; 并且使用存在于力控制增益和弹簧常数的倒数之间的固定比例度，基于弹簧常数来改变力控制增益。

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。