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公开(公告)号：US5001382A
公开(公告)日：1991-03-19
申请号：US404373
申请日：1989-09-07
申请人： Mikio Umeda , Kazumasa Ohnishi , Minoru Kurosawa
发明人： Mikio Umeda , Kazumasa Ohnishi , Minoru Kurosawa
CPC分类号： H01L41/0993 , H02N2/101
摘要： According to the invention, there is provided a stepping motor comprising a laminate type torsion actuator having a pair of cylindrical outer peripheries to be torsionally displaced relative to each other, a cylindrical fixed member surrounding said laminate type torsion actuator with certain space therebetween, first longitudinally vibrating elements placed between said fixed member and one of the cylindrical outer peripheries of said laminate type torsion actuator for selectively connecting or separating the fixed member and the torsion actuator through its elongation or contraction, second longitudinally vibrating elements placed between said fixed member and the other cylindrical peripheries of said torsion actuator with certain space therebetween for selectively connecting or separating the fixed member and the torsion actuator through its elongation or contraction with a phase inverse to that of the first elements. Such a stepping motor allows fine control of its rotary speed and position and large torque.
摘要翻译： 根据本发明，提供了一种步进电动机，其包括层叠型扭转致动器，其具有相对于彼此扭转位移的一对圆柱形外周，围绕所述层叠型扭转致动器的圆柱形固定构件，其间具有一定间隔，第一纵向 放置在所述固定构件和所述层叠型扭转致动器的圆柱形外周中的一个的振动元件，用于通过其伸长或收缩来选择性地连接或分离固定构件和扭转致动器，第二纵向振动元件设置在所述固定构件和另一个之间 所述扭转致动器的圆柱形周边具有一定间隔，用于通过其与第一元件的相位相反的伸长或收缩选择性地连接或分离固定构件和扭转致动器。 这样的步进电机能够精确地控制其转速和位置以及大的扭矩。
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公开(公告)号：US08089232B2
公开(公告)日：2012-01-03
申请号：US12277729
申请日：2008-11-25
申请人： Kichiya Itagaki , Minoru Kurosawa
发明人： Kichiya Itagaki , Minoru Kurosawa
IPC分类号： H02P6/04
CPC分类号： H02P6/085 , G11B19/2054 , H02P6/181 , H02P6/182 , H02P6/187
摘要： The disclosed invention achieves a significant reduction in the noise and vibration of a brushless motor from a startup up to the number of steady revolutions. To drive the brushless motor from stop up to the number of steady revolutions, when the arithmetic sequencer detects a rise of a clock signal CARYCLK, current control arithmetic is executed. On detecting a fall of the clock signal, the arithmetic sequence determines whether a division control signal DIVCNT has changed. If this signal has changed, soft switch arithmetic is executed. When the division control signal has not changed or after the completion of soft switching arithmetic, the arithmetic sequencer determines whether a rise of a mask signal MASK has occurred during one cycle of the PWM carrier signal CARYCLK. If a rise of the mask signal has not occurred, the operation returns to the first step. If a rise of the mask signal has occurred, PLL control arithmetic is executed, then the operation returns to the first step.
摘要翻译： 所公开的发明实现了从启动到稳定转数的无刷电动机的噪声和振动的显着降低。 为了将无刷电动机从停止驱动到稳定转数，当运算序列器检测到时钟信号CARYCLK的上升时，执行电流控制运算。 在检测到时钟信号的下降时，算术序列确定分频控制信号DIVCNT是否已经改变。 如果该信号发生变化，则执行软开关算术。 当分频控制信号没有改变或完成软切换运算后，运算序列器确定在PWM载波信号CARYCLK的一个周期期间是否发生了掩码信号MASK的上升。 如果没有发生掩码信号的上升，则操作返回到第一步。 如果屏蔽信号的上升发生，则执行PLL控制算术，然后操作返回到第一步。
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公开(公告)号：US20110074324A1
公开(公告)日：2011-03-31
申请号：US12963392
申请日：2010-12-08
IPC分类号： H02P6/10
摘要： A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed.
摘要翻译： 提供了一种用于抑制由个体变化引起的旋转脉动的同步电机的控制技术，而不使控制算法复杂化。 在作为同步电动机的控制装置的电动机驱动系统中，为了抑制用于驱动同步电动机的交流频率的N倍的脉动分量，控制器将其中的干扰响应的相位特性 相对于脉动频率的控制器设置在±45°以内。 因此，抑制了感应电压的变形或相位的变化而产生的转矩脉动成分。
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公开(公告)号：US07615909B2
公开(公告)日：2009-11-10
申请号：US11910047
申请日：2006-03-27
IPC分类号： H03H9/25
CPC分类号： H02N2/08
摘要： In an energy recovery type surface acoustic wave motor, an increase in energy efficiency at the time of energy recovery and supply is achieved by adjusting phase change. A surface acoustic wave motor comprises: a surface acoustic wave substrate; a slider provided with an applied pressure; a driving interdigital electrode connected to an external power supply for generating a driving surface acoustic wave on a surface so as to drive the slider by a frictional force which is generated on a contact surface of the slider with the surface acoustic wave substrate based on the surface acoustic wave and the applied pressure; recovery interdigital electrodes placed forward and backward in the direction of travel of the surface acoustic wave for recovering energy of a surface acoustic wave unused to drive the slider, and for using that energy to generate a surface acoustic wave; and phase adjusting means for matching the phase of a surface acoustic wave generated by the recovery interdigital electrodes to the phase of the driving surface acoustic wave generated by the driving interdigital electrode.
摘要翻译： 在能量回收型表面声波电动机中，通过调整相变来实现能量回收供给时的能量效率的提高。 表面声波电动机包括：声表面波基板; 具有施加压力的滑块; 连接到外部电源的驱动交叉指状电极，用于在表面上产生驱动表面声波，以便通过在滑块的接触表面上产生的摩擦力来驱动滑动件，该摩擦力与表面声波基板基于表面 声波和施加的压力; 在表面声波的行进方向上向前和向后放置回收叉指电极，用于回收未被用于驱动滑块的表面声波的能量，并且使用该能量来产生表面声波; 以及相位调整装置，用于将由恢复叉指电极产生的表面声波的相位与由驱动交叉指型电极产生的驱动表面声波的相位相匹配。
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公开(公告)号：US20090189556A1
公开(公告)日：2009-07-30
申请号：US12277729
申请日：2008-11-25
申请人： Kichiya ITAGAKI , Minoru Kurosawa
发明人： Kichiya ITAGAKI , Minoru Kurosawa
IPC分类号： H02P1/50
CPC分类号： H02P6/085 , G11B19/2054 , H02P6/181 , H02P6/182 , H02P6/187
摘要： The disclosed invention achieves a significant reduction in the noise and vibration of a brushless motor from a startup up to the number of steady revolutions. To drive the brushless motor from stop up to the number of steady revolutions, when the arithmetic sequencer detects a rise of a clock signal CARYCLK, current control arithmetic is executed. On detecting a fall of the clock signal, the arithmetic sequence determines whether a division control signal DIVCNT has changed. If this signal has changed, soft switch arithmetic is executed. When the division control signal has not changed or after the completion of soft switching arithmetic, the arithmetic sequencer determines whether a rise of a mask signal MASK has occurred during one cycle of the PWM carrier signal CARYCLK. If a rise of the mask signal has not occurred, the operation returns to the first step. If a rise of the mask signal has occurred, PLL control arithmetic is executed, then the operation returns to the first step.
摘要翻译： 所公开的发明实现了从启动到稳定转数的无刷电动机的噪声和振动的显着降低。 为了将无刷电动机从停止驱动到稳定转数，当运算序列器检测到时钟信号CARYCLK的上升时，执行电流控制运算。 在检测到时钟信号的下降时，算术序列确定分频控制信号DIVCNT是否已经改变。 如果该信号发生变化，则执行软开关算术。 当分频控制信号没有改变或完成软切换运算后，运算序列器确定在PWM载波信号CARYCLK的一个周期期间是否发生了掩码信号MASK的上升。 如果没有发生掩码信号的上升，则操作返回到第一步。 如果屏蔽信号的上升发生，则执行PLL控制算术，然后操作返回到第一步。
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公开(公告)号：US07294982B2
公开(公告)日：2007-11-13
申请号：US11371243
申请日：2006-03-09
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
CPC分类号： G11B19/28
摘要： A three-phase DC motor output stage including a predriver that supplies drive voltages to power MOSFETs supplies output voltages to three-phase coils, monitors whether each of gate-to-source voltages of the power MOSFETs is greater than or equal to a predetermined voltage and thereby detects a current zero cross, and employs the output of such current zero cross detection in PLL control for controlling energization switching timing and thereby forms drive voltages of 180-degree energization. Lower hooks with a voltage minimum phase as GND and upper hooks with a voltage maximum phase as a source are set as patterns alternately repeated for every electrical angle of 60 degrees. The patterns are expressed in linear approximation to generate sine wave-like drive voltages, thereby causing sine wave-like currents to flow into the three-phase coils.
摘要翻译： 包括向功率MOSFET提供驱动电压的预驱动器的三相DC电动机输出级将输出电压提供给三相线圈，监视功率MOSFET的栅极至源极电压中的每一个是否大于或等于预定电压 从而检测电流零交叉，并且在PLL控制中采用这种电流过零检测的输出来控制通电切换定时，从而形成180度通电的驱动电压。 具有电压最小相位为GND的下钩和以电压最大相位为源的上钩被设置为对于60度的每个电角度交替重复的图案。 模式以线性近似表示，以产生正弦波状驱动电压，从而使正弦波状电流流入三相线圈。
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公开(公告)号：US20060227448A1
公开(公告)日：2006-10-12
申请号：US11450436
申请日：2006-06-12
IPC分类号： G11B15/46
CPC分类号： G11B19/20 , G11B19/247 , H02P6/08 , H02P6/28
摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.
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公开(公告)号：US08569983B2
公开(公告)日：2013-10-29
申请号：US13044042
申请日：2011-03-09
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02P6/00
摘要： This invention provides a motor driving apparatus that made it possible to reduce torque ripples including those attributed to load variation of the motor and an associated method for control of motor revolution. An output stage to a multiphase DC motor is comprised of power elements to supply output voltages to multiphase coils and a predriver to supply drive voltages to the power elements. A resistor means detects a current flowing through the power elements. A supply current detector detects a voltage signal produced across the resistor means as a supply current, using a high-speed ADC and a moving average filter. An output controller generates a PWM signal with a frequency lower than the frequency of the high-speed ADC so that the current detected by the supply current detector conforms to a current signal indicating a motor revolving speed and transfers the PWM signal to the output stage.
摘要翻译： 本发明提供一种电动机驱动装置，其能够减少扭矩波动，包括归因于电动机的负载变化的转矩波动，以及用于控制电动机转速的相关方法。 向多相直流电动机的输出级由向多相线圈提供输出电压的功率元件和向功率元件提供驱动电压的预驱动器组成。 电阻装置检测流过功率元件的电流。 电源电流检测器使用高速ADC和移动平均滤波器来检测跨电阻器件产生的电压信号作为电源电流。 输出控制器产生频率低于高速ADC频率的PWM信号，使得由电源电流检测器检测到的电流符合指示电动机转速的电流信号，并将PWM信号传输到输出级。
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公开(公告)号：US08232751B2
公开(公告)日：2012-07-31
申请号：US12547693
申请日：2009-08-26
IPC分类号： H02P6/00
CPC分类号： H02P21/04 , H02P6/187 , H02P21/32 , H02P2207/05
摘要： A position sensorless drive method capable of driving a permanent magnet motor by an ideal sine-wave current and enabling the driving from an extremely low-speed range in the vicinity of zero-speed is provided. A neutral-point potential of the permanent magnet motor is detected in synchronization with a PWM waveform of an inverter. The position of a rotor of the permanent magnet motor is estimated from the variation of the neutral-point potential. Since the neutral-point potential is varied in accordance with the magnetic circuit characteristics of an individual permanent magnet motor, the position can be detected regardless of the presence of saliency of the permanent magnet motor.
摘要翻译： 提供一种能够通过理想的正弦波电流驱动永磁电动机并且能够在零速度附近的极低速范围内进行驱动的位置无传感器驱动方法。 与逆变器的PWM波形同步地检测永磁电动机的中性点电位。 根据中性点电位的变化估计永磁电动机的转子的位置。 由于中性点电位根据单个永磁电动机的磁路特性而变化，因此可以检测位置，而不管永磁电动机的显着性如何。
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公开(公告)号：US07915844B2
公开(公告)日：2011-03-29
申请号：US12138103
申请日：2008-06-12
申请人： Minoru Kurosawa , Yasuhiko Kokami
发明人： Minoru Kurosawa , Yasuhiko Kokami
IPC分类号： H02K29/10
摘要： This invention provides a motor driving apparatus that made it possible to reduce torque ripples including those attributed to load variation of the motor and an associated method for control of motor revolution. An output stage to a multiphase DC motor is comprised of power elements to supply output voltages to multiphase coils and a predriver to supply drive voltages to the power elements. A resistor means detects a current flowing through the power elements. A supply current detector detects a voltage signal produced across the resistor means as a supply current, using a high-speed ADC and a moving average filter. An output controller generates a PWM signal with a frequency lower than the frequency of the high-speed ADC so that the current detected by the supply current detector conforms to a current signal indicating a motor revolving speed and transfers the PWM signal to the output stage.
摘要翻译： 本发明提供一种电动机驱动装置，其能够减少扭矩波动，包括归因于电动机的负载变化的转矩波动，以及用于控制电动机转速的相关方法。 向多相直流电动机的输出级由向多相线圈提供输出电压的功率元件和向功率元件提供驱动电压的预驱动器组成。 电阻装置检测流过功率元件的电流。 电源电流检测器使用高速ADC和移动平均滤波器来检测跨电阻器件产生的电压信号作为电源电流。 输出控制器产生频率低于高速ADC频率的PWM信号，使得由电源电流检测器检测到的电流符合指示电动机转速的电流信号，并将PWM信号传输到输出级。
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