公开(公告)号：US06301550B1

公开(公告)日：2001-10-09

申请号：US09198578

申请日：1998-11-24

申请人： Kiyokazu Okamoto ,  Yoshiyuki Omori

发明人： Kiyokazu Okamoto ,  Yoshiyuki Omori

IPC分类号： G01B1124

CPC分类号： G01B21/30 ,  G01B21/20

摘要： A phase delay correction system for use in a shape measurement is capable of removing the distortion of a restored shape and the mechanical positional deviation caused by a phase delay occurring during signal processing, and enables a Fourier series processing procedure to be adopted as is. A detector performs a relative scan of an object to be measured at a constant speed. A signal processing unit converts a shape detection signal obtained by the scan to digital data, and processes the digital data. The signal processing unit has a digital filter for removing a noise component, an LUT memory for storing correlation data representing a correlation between a spatial phase and an amount of phase delay measured in advance in an output of the filter a Fourier coefficient calculating section for calculating coefficients of a cosine component and a sine component of each spatial phase for expressing detection data obtained from the filter in a Fourier series, and a Fourier coefficient correction section for correcting each of the coefficients calculated by the calculating section, on the basis of the data read out from the LUT memory.

摘要翻译： 用于形状测量的相位延迟校正系统能够消除由信号处理期间发生的相位延迟引起的恢复形状和机械位置偏差的失真，并且能够直接采用傅立叶级数处理程序。 检测器以恒定速度执行要测量的对象的相对扫描。 信号处理单元将通过扫描获得的形状检测信号转换为数字数据，并处理数字数据。 信号处理单元具有用于去除噪声分量的数字滤波器，用于存储表示在滤波器的输出中预先测量的空间相位与相位延迟量之间的相关性的相关数据的LUT存储器，傅里叶系数计算部分用于计算 用于表示以傅里叶级数从滤波器获得的检测数据的每个空间相位的余弦分量和正弦分量的系数，以及用于校正由计算部分计算的每个系数的傅立叶系数校正部分， 从LUT存储器中读出。

公开(公告)号：US6034773A

公开(公告)日：2000-03-07

申请号：US168967

申请日：1998-10-09

申请人： Kunitoshi Nishimura ,  Morimasa Ueda ,  Kiyokazu Okamoto

发明人： Kunitoshi Nishimura ,  Morimasa Ueda ,  Kiyokazu Okamoto

IPC分类号： G01B11/00 ,  G01B9/02 ,  G01B21/00

CPC分类号： G01B9/02052

摘要： There is provided a length measuring machine which is not influenced by fluctuations of air or changes in temperature. At a structure, graduations are formed in a longitudinal direction, and further a built-in light wave interferometer is provided. The built-in light wave interferometer measures a length of the structure and supplies the data to a current controller. In order to reconcile a length of the structure with a nominal value, the current controller supplies current to an electrical resistor provided at the structure to cause thermal expansion of the structure, or the structure is cooled.

摘要翻译： 提供了不受空气波动或温度变化影响的长度测量机。 在结构上，沿长度方向形成刻度，并且还提供内置的光波干涉仪。 内置光波干涉仪测量结构的长度，并将数据提供给电流控制器。 为了将结构的长度与标称值协调一致，电流控制器向结构上提供的电阻器提供电流以引起结构的热膨胀，或者结构被冷却。

公开(公告)号：US4818927A

公开(公告)日：1989-04-04

申请号：US36056

申请日：1987-04-09

申请人： Kiyoshi Hino ,  Kousuke Kaitou ,  Kiyokazu Okamoto

发明人： Kiyoshi Hino ,  Kousuke Kaitou ,  Kiyokazu Okamoto

IPC分类号： H02P21/00 ,  H02P23/00 ,  H02P23/08 ,  H02P27/04 ,  H02P5/40

CPC分类号： H02P23/08 ,  H02P23/20

摘要： The acceleration/deceleration control apparatus using slip speed detects an angular frequency .omega.r corresponding to an execution speed of an induction motor and derives an angular frequency .omega.s corresponding to a slip speed corresponding to a slip speed in response to a torque of the said motor, from a vector controller of the said motor.On the other hand, an allowable value .omega.s' of said angular frequency corresponding to the said .omega.r is prepared beforehand, and is compared with said angular frequency .omega.s.According to the result of this comparison, the IM rotation is controlled. So even if the induction motor is used as servo motor, no shock of the torque will flow through the motor and the motor itself will not be stalled.

公开(公告)号：US5206574A

公开(公告)日：1993-04-27

申请号：US341300

申请日：1989-04-19

申请人： Kiyokazu Okamoto ,  Hideyuki Amagai

发明人： Kiyokazu Okamoto ,  Hideyuki Amagai

IPC分类号： H02P21/08

CPC分类号： H02P21/09

摘要： A vector control apparatus for an induction motor that controls the speed of the induction motor by providing the motor with a speed command and a secondary magnetic flux command from outside. The vector control apparatus includes a vector control system operative in such a way as to maintain a vector relation equation between a torque current, an exciting current, a slip speed, a secondary magnetic flux command, on the one hand, and a torque T, on the other, of the induction motor; and memory system means for storing a predetermined relationship between the torque T, the detected speed value .omega..sub.r, of the motor, and the secondary magnetic flux command obtained from the vector control system. The torque T obtained from the vector control system is inputted to the memory system and the secondary magnetic flux is outputted and fed back therefrom to the vector control system. In the predetermined relationship, when he torque T is large, the secondary magnetic flux .phi..sub.2 is increased in such a way as to reduce the slip speed within a range where the motor loss L to the torque T ratio (T/L) can reach the maximum value, and when the torque T is small and the speed is less than a predetermined value, the secondary magnetic flux .phi..sub.2 is reduced in such a way as to increase the slip speed and reduce the speed ripple within the range where the motor loss L can be allowed.

摘要翻译： 一种用于感应电动机的矢量控制装置，其通过从外部向电动机提供速度指令和次级磁通指令来控制感应电动机的速度。 矢量控制装置包括矢量控制系统，其操作方式是一方面维持转矩电流，励磁电流，滑差速度，二次磁通指令与转矩T之间的矢量关系式， 另一方面是感应电动机; 以及存储系统装置，用于存储从矢量控制系统获得的转矩T，检测到的速度值ωr与电动机的次级磁通指令之间的预定关系。 从矢量控制系统获得的转矩T被输入到存储器系统，并且二次磁通被输出并从其馈送到矢量控制系统。 在预定关系中，当转矩T大时，二次磁通phi 2增加，使得在电动机损失L与转矩T比（T / L）可达到的范围内降低滑移速度 最大值，并且当转矩T小并且速度小于预定值时，次级磁通量phi 2被减小以增加滑差速度并且将速度波动降低到电动机的范围内 可以允许损失L。

公开(公告)号：US4868438A

公开(公告)日：1989-09-19

申请号：US31526

申请日：1987-03-27

申请人： Kiyokazu Okamoto ,  Hiroshi Iijima ,  Tetsuo Endo ,  Yukio Miyamoto

发明人： Kiyokazu Okamoto ,  Hiroshi Iijima ,  Tetsuo Endo ,  Yukio Miyamoto

IPC分类号： H02K17/12 ,  H02K1/26 ,  H02K17/16

CPC分类号： H02K1/26 ,  H02K17/16 ,  H02K2201/06

摘要： A three-phase induction motor is subjected to countermeasure for the rotor and the stator in order to remove two harmonic components of the orders causing a torque ripple, among a plurality of harmonic components included in a magnetic flux generated in an air gap between a stator core and a rotor core. In the three-phase induction motor, conductor grooves of the rotor core are skewed by an electrical angle of 2.pi./n where n is the order of one of the harmonic components to be removed. In the stator, the number of slots (N) is selected so that an equation N=l.times.m.times.q is satisfied, where l=the number of poles, m=the number of phase, and q is a non integer number representing the number of slots per pole per phase, and the stator winding pitch is determined according to the order of another harmonic component to be removed.

摘要翻译： 三相感应电动机对转子和定子进行对策，以便在定子中产生的磁通中产生的磁通中包含的多个谐波分量中除去导致转矩脉动的次数的两个谐波分量 芯和转子芯。 在三相感应电动机中，转子铁芯的导体槽倾斜2 pi / n的电角，其中n是要去除的谐波分量之一。 在定子中，选择时隙数（N），使得满足等式N = 1×m×q，其中l =极数，m =相位数，q是表示时隙数量的非整数 每相的每极，并且定子绕组间距根据要去除的另一个谐波分量的顺序来确定。

公开(公告)号：US4755702A

公开(公告)日：1988-07-05

申请号：US588

申请日：1987-01-06

申请人： Hiroshi Iijima ,  Tetsuo Endo ,  Yukio Miyamoto ,  Kiyokazu Okamoto

发明人： Hiroshi Iijima ,  Tetsuo Endo ,  Yukio Miyamoto ,  Kiyokazu Okamoto

IPC分类号： H02K3/28 ,  H02K17/12 ,  H02K17/00

CPC分类号： H02K3/28

摘要： A three-phase induction motor includes winding slots and a stator winding. The number of winding slots per pole per phase is a noninteger. The stator winding is a three-phase balanced winding. A pitch s of the winding satisfies s=(r-t)/r or s=r/(r+t) (where t is an odd number and r is the order of a harmonic wave to be suppressed).

摘要翻译： 三相感应电动机包括绕组槽和定子绕组。 每相每极的绕组槽数是非整数。 定子绕组是三相平衡绕组。 绕组的间距s满足s =（r-t）/ r或s = r /（r + t）（其中t是奇数，r是要抑制的谐波的阶数）。

公开(公告)号：US4061907A

公开(公告)日：1977-12-06

申请号：US706322

申请日：1976-07-19

申请人： Kiyokazu Okamoto ,  Hitoshi Hayashi

发明人： Kiyokazu Okamoto ,  Hitoshi Hayashi

IPC分类号： B23Q15/013 ,  G05B19/4103 ,  G06F15/46

CPC分类号： G05B19/4103

摘要： Input signals supplied for each block to an interpolator for a numerically controlled machine comprise displacement signals representative of conventional displacement data in terms of a conventional step size and a feed rate signal representative of a feed rate which, in turn, defines a conventional pulse distribution rate. The interpolator selects, in response to the feed rate signal, a working step size to be an integral multiple or an integral submultiple (exclusive of unity) of the conventional one, derives working displacement data and a working pulse distribution rate by dividing the conventional ones by the multiple or submultiple, and carries out pulse distribution in a conventional manner but by the use of the working displacement data and feed rate to produce those distribution signals at the working pulse distribution rate which make servos feed a machine tool relative to a workpiece with the working step size and at the feed rate. The input signal may include a signal indicative of the working step size.

摘要翻译： 为每个块提供的输入信号用于数控机器的内插器包括代表常规位移数据的代表传统步长的位移信号和表示进给速率的进给速率信号，进给速率信号反过来限定常规的脉冲分配速率 。 插补器响应于馈送速率信号选择工作步长为常数的整数倍或整数倍（不包括统一），通过将常规的步数除以工作位移数据和工作脉冲分布率， 通过多重或多数，并且以常规方式执行脉冲分布，但是通过使用工作位移数据和进给速率以工作脉冲分布速率产生这些分配信号，使得伺服机构相对于工件馈送机床， 工作步长和进给速度。 输入信号可以包括指示工作步长的信号。

公开(公告)号：US06937070B2

公开(公告)日：2005-08-30

申请号：US09912184

申请日：2001-07-24

申请人： Nobuhiro Ishikawa ,  Kiyokazu Okamoto

发明人： Nobuhiro Ishikawa ,  Kiyokazu Okamoto

IPC分类号： G01R19/04 ,  G01B7/00 ,  H03D1/22 ,  H04L27/00 ,  H03D1/00

CPC分类号： G01B7/003 ,  G01R19/04 ,  H03D1/2245

摘要： Two all pass filters (11, 12) with 90° phase-shifted different center frequencies are employed to pass an alternating signal S with jitters in the period to generate signals S1 and S2, 90° phase-shifted from each other. A pulse generator (22) generates a sampling pulse Sp by detecting a zero cross point of the phase-shifted signal S2. A full-wave rectifier (21) rectifies full waves of the phase-shifted signal S1 and provides a rectified output to a sampling circuit (23), which extracts a peak value of the amplitude at the timing of the sampling pulse Sp.

摘要翻译： 采用具有90°相移的不同中心频率的两个全通滤波器（11,12）在该周期内通过具有抖动的交替信号S以产生彼此相移的信号S 1和S 2，90°相移。 脉冲发生器（22）通过检测相移信号S 2的零交叉点来产生采样脉冲Sp。 全波整流器（21）对相移信号S 1的全波进行整流，并向采样电路（23）提供整流输出，该采样电路（23）在采样脉冲Sp的定时提取振幅的峰值。

公开(公告)号：US06633387B1

公开(公告)日：2003-10-14

申请号：US09679064

申请日：2000-10-05

申请人： Kiyokazu Okamoto ,  Ikumatsu Fujimoto ,  Hirohisa Handa ,  Naoki Mitsutani

发明人： Kiyokazu Okamoto ,  Ikumatsu Fujimoto ,  Hirohisa Handa ,  Naoki Mitsutani

IPC分类号： G01B902

CPC分类号： G01B11/27 ,  G01B9/10

摘要： An interference optical system (18) leads parallel beam to a pair of opposed test surface (M1, M2). It then leads, from the test surfaces via different optical paths (C1, C2), interference fringe images formed by radiation of the parallel beam to the test surfaces (M1, M2), respectively. The interference optical system (18) has a pair of opposite reference surfaces (S1, S2) formed thereon and defined with a highly accuracy parallelism and distance. A measurement head (27) is provided with these reference surfaces (S1, S2), which are interposed between and oppose to the test surfaces (M1, M2), respectively. Imaging devices (19a, 20a) take interference fringe images that are created through interference between a light reflected at each of the test surfaces (M1, M2) and a light reflected at the corresponding reference surface (S1, S2) opposing thereto.

摘要翻译： 干涉光学系统（ 18 ）将平行光束引导到一对相对的测试表面（M 1 ，M 2 ）。 然后，通过不同的光路（C 1 ，C 2 ）从测试表面引出，形成干涉条纹图像 通过将平行光束分别照射到测试表面（M 1 ，M 2 ）。 干涉光学系统（ 18 ）具有一对相反的参考表面（S 1 ，S 2 ），并以高度精确的平行度和距离定义。 这些参考表面（S 1 ，S 2的测量头（ 27 ） ），它们介于测试表面之间并与其相对（M 1 ，M 2 ）。 成像设备（ 19 a ，20 a >）采取通过每个测试表面（M 1 ，M 2 之间的反射光的干涉产生的干涉条纹图像 ）和与其相对的相应参考表面（S 1 ，S 2 ）反射的光。 / PTEXT>

公开(公告)号：US5734688A

公开(公告)日：1998-03-31

申请号：US549143

申请日：1995-10-27

申请人： Mikiya Teraguchi ,  Kiyokazu Okamoto

发明人： Mikiya Teraguchi ,  Kiyokazu Okamoto

IPC分类号： G01D5/245 ,  G01D5/244 ,  G06F17/17 ,  H03M1/20 ,  H03M1/30 ,  G01B7/00

CPC分类号： H03M1/203 ,  G01D5/24404 ,  H03M1/303

摘要： Signals S.sub.j and S.sub.j-1 that are deviate from each other by a phase value of 2 .pi./M are generated by combining two sinusoidal detection signals. A reference signal .DELTA.S is generated which represents a difference between the signals S.sub.j and S.sub.j-1. An up-pulse or a down-pulse is generated every time the signal S.sub.j or S.sub.j-1 varies by .DELTA.S/n. An n-ary reversible ring counter outputs a first count value and a carry or borrow pulse by counting the up-pulse and the down-pulse, and the first count value is used to control the operation of generating the up-pulse or down-pulse. An M-ary reversible ring counter outputs a second count value by counting the carry pulse or the borrow pulse, and the second count value is used to control the operation of generating the signals S.sub.j and S.sub.j-1.

摘要翻译： 通过组合两个正弦检测信号来产生彼此相差2pi / M的信号Sj和Sj-1。 生成参考信号DELTA S，其表示信号Sj和Sj-1之间的差。 每当信号Sj或Sj-1以DELTA S / n变化时，产生上升脉冲或下降脉冲。 正弦可逆环形计数器通过对上升脉冲和下降脉冲进行计数来输出第一计数值和进位或借位脉冲，并且第一计数值用于控制产生上升脉冲或下降脉冲的操作， 脉冲。 M元可逆环计数器通过对进位脉冲或借位脉冲进行计数而输出第二计数值，第二计数值用于控制产生信号Sj和Sj-1的操作。