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11.发明授权Method and apparatus for controlling an inverter generating a plurality of phase voltages 失效用于控制产生多个相电压的逆变器的方法和装置
公开(公告)号：US5361197A
公开(公告)日：1994-11-01
申请号：US4899
申请日：1993-01-21
CPC分类号： H02M7/487
摘要： An inverter control apparatus comprises a controller, a mode decision circuit and a voltage reference conversion circuit. The mode decision circuit determines one of three kinds of modes which may be used to control the inverter, namely, a normal mode, a rectangle mode and zero correction mode selected according to values and polarities of multi-phase voltage reference signals. The voltage reference conversion circuit corrects the voltage reference signals according to the determined mode in the mode decision circuit. In the case of the normal mode, the mode decision circuit outputs the previous voltage reference signal V* without change as the new or corrected voltage reference signals. In the case of the rectangle mode, the circuit fixes the voltage reference signal V* having the greatest value of the three phase (U-phase, V-phase and W-phase) to a minimum voltage reference V.sub.min which is of opposite polarity to the selected greatest value signal, or, in another embodiment, to a zero value. Further the circuit converts the others voltage reference signals to corrected voltage reference signals without change of line voltage. The control circuit permits control of the inverter even in a regime of low reference voltage which would otherwise result in an uncontrolled region of the inverter.
摘要翻译： 逆变器控制装置包括控制器，模式判定电路和电压基准转换电路。 模式判定电路确定可用于控制逆变器的三种模式之一，即根据多相电压参考信号的值和极性选择的正常模式，矩形模式和零校正模式。 电压基准转换电路根据模式判定电路中的确定模式校正电压参考信号。 在正常模式的情况下，模式判定电路将先前的电压基准信号V *作为新的或校正的电压基准信号而不改变地输出。 在矩形模式的情况下，电路将具有三相（U相，V相和W相）的最大值的电压参考信号V *固定为极性相反的最小参考电压Vmin 所选择的最大值信号，或者在另一个实施例中为零值。 此外，电路将其他电压参考信号转换为校正的电压参考信号，而不改变线路电压。 即使在低参考电压的情况下，控制电路也允许控制逆变器，这将导致逆变器的不受控制的区域。
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公开(公告)号：US5111124A
公开(公告)日：1992-05-05
申请号：US581901
申请日：1990-09-13
申请人： Ryoichi Kurosawa
发明人： Ryoichi Kurosawa
CPC分类号： G05B11/42 , Y10S388/921
摘要： A control computation unit includes a delay element in addition to an integrating element and a proportional element. The delay time of this delay element is selected, following the time necessary for due settling (namely, the time required for rendering a controlled variable to follow changes in a control variable command), or the time necessary to restore the controlled variable to the control variable command when a controlled object involved has incurred a certain external disturbance. In case there exist a computation delay time, a dead time, and/or a detection delay time, respectively in the control computation unit, controlled system, and/or a control variable detector, then the delay time is selected equal to one of the computation delay time, dead time, and the detection delay time, or the sum of these times. Additional provision of the delay element with a delay time equal to the time desired for due settling to the control computation unit results in settling within the time equal to the time desired for due settling the response.
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13.发明授权
公开(公告)号：US4555752A
公开(公告)日：1985-11-26
申请号：US613730
申请日：1984-05-24
申请人： Ryoichi Kurosawa
发明人： Ryoichi Kurosawa
CPC分类号： H02M7/1623
摘要： A power converter utilizes first and second thyristor bridges energized by two AC power sources which are insulated from each other. The power converter includes first and second auxiliary thyristor circuits each containing plural thyristors, and a commutation circuit. The cathode of each thyristor of first auxiliary thyristor circuit is connected to one of the AC power sources, and the anode of respective thyristors are connected each other at a common node. The anode of each thyristor of second auxiliary thyristor circuit is connected to the other of the AC power sources, and the cathode of respective thyristors are connected each other at another common node. The commutation circuit is connected between the common nodes of the first and second auxiliary thyristor circuits.
摘要翻译： 电力转换器利用由彼此绝缘的两个AC电源供电的第一和第二晶闸管桥。 功率转换器包括每个包含多个晶闸管的第一和第二辅助晶闸管电路和换向电路。 第一辅助晶闸管电路的每个晶闸管的阴极连接到AC电源中的一个，并且各个晶闸管的阳极在公共节点处相互连接。 第二辅助晶闸管电路的每个晶闸管的阳极连接到另一个交流电源，各个晶闸管的阴极彼此连接在另一个公共节点处。 换向电路连接在第一和第二辅助晶闸管电路的公共节点之间。
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公开(公告)号：US4475105A
公开(公告)日：1984-10-02
申请号：US535289
申请日：1983-09-23
申请人： Ryoichi Kurosawa
发明人： Ryoichi Kurosawa
CPC分类号： G01P3/44 , G01D5/242 , G01D5/247 , G01P13/045
摘要： A system for detecting mechanical movement of a body under detection comprises: a synchro generator having multiple-phase primary windings and a secondary winding, either of the primary windings or the secondary winding capable of being coupled to the body, and a phase-shifting circuit phase-shifting the secondary induced signal by 90.degree.. A phase comparator determines the phase difference between a set of two-phase reference sinusoidal signals and a second set of two-phase signals consisting of the induced signal and the phase-shifted signal. A frequency-divider counts pulses of a frequency proportional to the phase difference and produces a digital signal indicative of the count value at each moment. An exciting circuit for exciting the synchro generator determines the instantaneous values of the exciting voltage in accordance with the count value of the frequency divider. The synchro generator, the phase-shifting circuit, the phase comparator, the frequency-divider and the exciting circuit form a phase-locked-loop controlling the induced voltage so as to be in phase with the reference signals. A digital signal relating to the movement is produced in accordance with a signal from the phase-locked-loop.
摘要翻译： 一种用于检测检测到的身体的机械运动的系统，包括：具有多相初级绕组的同步发生器和能够耦合到身体的初级绕组或次级绕组中的任一个的次级绕组，以及相移电路 将二次感应信号相移90°。 相位比较器确定一组两相参考正弦信号与由感应信号和相移信号组成的第二组二相信号之间的相位差。 分频器计数与相位差成比例的频率的脉冲，并产生指示每个时刻的计数值的数字信号。 用于激励同步发生器的激励电路根据分频器的计数值确定激励电压的瞬时值。 同步发生器，移相电路，相位比较器，分频器和励磁电路形成控制感应电压以与参考信号同相的锁相环。 根据来自锁相环的信号产生与运动有关的数字信号。
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公开(公告)号：US5288956A
公开(公告)日：1994-02-22
申请号：US833797
申请日：1992-02-12
申请人： Toshio Kadokura , Ryoichi Kurosawa
发明人： Toshio Kadokura , Ryoichi Kurosawa
CPC分类号： B66B11/0407 , B66B9/003
摘要： A self running type elevator system using linear motors in which a control of power supply to a plurality of elevator cars can be achieved without increasing the size of the system enormously. The system includes at least one travelling corridors, each of which is equipped with a primary coil of a linear motor; a plurality of elevator cars placed inside the travelling corridors, each of which is equipped with a secondary conductor of the linear motor; and a plurality of control device means, provided in correspondence to the elevator cars, for controlling a supply of a driving power to the primary coil at a position of the elevator car such that the elevator car is driven by a driving force produced between the primary coil and the secondary conductor of the linear motor by the driving power.
摘要翻译： 一种使用线性电动机的自行式电梯系统，其中可以实现对多个电梯轿厢的电力供应的控制，而不会极大地增加系统的尺寸。 该系统包括至少一个行进走廊，每个行走走廊配备有线性电动机的初级线圈; 放置在行进走廊内的多个电梯轿厢，每个电梯轿厢配备有线性电动机的次级导体; 以及与电梯轿厢对应地设置的多个控制装置装置，用于控制在电梯轿厢的位置向初级线圈提供驱动电力的供应，使得电梯轿厢由主电梯之间产生的驱动力驱动 线圈和线性电机的次级导体由驱动电源。
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16.发明授权Optical rotation detector including a disk having slits with concave and convex parts and method of manufacturing 失效光学旋转检测器，包括具有凹槽和凸块部件的滑块及其制造方法
公开(公告)号：US5057685A
公开(公告)日：1991-10-15
申请号：US456967
申请日：1989-12-26
申请人： Ryoichi Kurosawa , Kozo Taira
发明人： Ryoichi Kurosawa , Kozo Taira
IPC分类号： G01D5/347
CPC分类号： G01D5/34707
摘要： A rotation detector includes a rotary disk in which slits are recorded, and a photodetector for reading the slits with a laser beam. The slits is constituted by concave and convex parts having different widths radially formed on one surface of the rotary disk at different intervals. The width of one of the concave and convex parts constituting the slits which has a smaller width or slit interval is set to be smaller than the spot size of the laser beam.
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公开(公告)号：US4914365A
公开(公告)日：1990-04-03
申请号：US253482
申请日：1988-10-05
申请人： Shin Murakami , Ryoichi Kurosawa
发明人： Shin Murakami , Ryoichi Kurosawa
CPC分类号： B25J9/1633 , G05B19/19 , G05B2219/41434
摘要： A control device for a servo motor comprises feedforward means for correcting a speed reference obtained by a position control device by a correction amount obtained on the basis of an objective position or an objective speed of the servo motor so that a response delay of the position control device for obtaining a reference speed necessary to control the rotation angle position of the servo motor to an objective rotation angle position is compensated for while restricting vibration.
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公开(公告)号：US4755738A
公开(公告)日：1988-07-05
申请号：US91666
申请日：1987-09-01
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A reactive power compensation apparatus for compensating for voltage fluctuation of an AC power supply system includes a first arithmetic circuit for synthesizing a positive-phase fundamental wave voltage signal from voltages of the AC power supply system, a second arithmetic circuit for synthesizing negative-phase voltage signals from the voltages of the AC power supply system, a third arithmetic circuit, coupled to the first and second arithmetic circuits, for synthesizing current instructions from the positive-phase fundamental wave voltage and the negative-phase voltage signals, and a circuit, coupled to the third arithmetic circuit, for generating a reactive power corresponding to the current instructions.
摘要翻译： 用于补偿交流电源系统的电压波动的无功补偿装置包括：第一运算电路，用于从交流电源系统的电压合成正相基波电压信号;第二运算电路，用于合成负相电压 来自交流电源系统的电压的信号，耦合到第一和第二运算电路的第三运算电路，用于从正相基波电压和负相电压信号合成电流指令，以及耦合 到第三运算电路，用于产生与当前指令相对应的无功功率。
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公开(公告)号：US4556885A
公开(公告)日：1985-12-03
申请号：US415182
申请日：1982-09-07
申请人： Ryoichi Kurosawa
发明人： Ryoichi Kurosawa
CPC分类号： G01D5/24404 , G01P3/489
摘要： A system for detecting mechanical movement of a body under detection formed of: a synchro generator having a primary and a secondary windings, one of which is capable of being coupled to the body; an exciting circuit for providing exciting current to the primary winding; a reference signal generator for providing a reference signal of a predetermined frequency; a first circuit producing pulses at a frequency which changes depending on the phase difference between the reference signal and the signal induced in the secondary winding; and a frequency-divider counting the pulses and producing a first digital signal indicative of the count value at each moment. The first digital signal is supplied to the exciting circuit which determines the instantaneous value of the exciting current at each moment. The synchro generator, the reference signal generator, the first circuit, the frequency-divider and the exciting circuit form a phase-locked-loop controlling the induced voltage so as to be in a predetermined phase-relationship with the reference signal. There is further provided a device responsive to the phase-locked-loop for producing a second digital signal relating to the movement of the body under detection.
摘要翻译： 一种用于检测被检测物体的机械运动的系统，其形成为：具有初级和次级绕组的同步发生器，其中一个能够耦合到所述主体; 用于向初级绕组提供励磁电流的励磁电路; 用于提供预定频率的参考信号的参考信号发生器; 产生脉冲的第一电路，其频率根据参考信号和次级绕组中感应的信号之间的相位差而改变; 以及分频器对脉冲进行计数，并产生指示每一时刻的计数值的第一数字信号。 第一数字信号被提供给激励电路，其确定每一时刻的励磁电流的瞬时值。 同步发生器，参考信号发生器，第一电路，分频器和激励电路形成控制感应电压以与参考信号处于预定相位关系的锁相环。 还提供了一种响应于锁相环的装置，用于产生与检测到的身体的运动有关的第二数字信号。
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公开(公告)号：US4264952A
公开(公告)日：1981-04-28
申请号：US003536
申请日：1979-01-15
申请人： Ryoichi Kurosawa
发明人： Ryoichi Kurosawa
CPC分类号： H02M7/5233
摘要： In an inverter apparatus having at least two positive side main semiconductor switching elements and at least two negative side main semiconductor switching elements, the output terminals of the apparatus provided between the positive-side elements and the negative-side elements, respectively. A positive-side commutating circuit, a negative-side commutating circuit, and positive-side and negative-side phase selective, current circulating, semiconductor elements are provided separately for controlling the commutation of the positive-side and negative-side main semiconductor switching elements, respectively.
摘要翻译： 在具有至少两个正侧主半导体开关元件和至少两个负侧主半导体开关元件的逆变器装置中，设置在正侧元件和负侧元件之间的装置的输出端子。 分别设置正侧整流电路，负侧整流电路以及正侧和负侧相选择性电流循环半导体元件，用于控制正侧和负侧主半导体开关元件的换向 ， 分别。
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