公开(公告)号：US5093754A

公开(公告)日：1992-03-03

申请号：US421179

申请日：1989-10-13

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： B23B19/02 ,  B60L13/06 ,  B60L13/08 ,  B65G54/02 ,  F04D19/04 ,  F16C32/04 ,  F16C39/06 ,  G05D3/12 ,  H02N15/00

CPC分类号： F16C32/0442 ,  B60L13/06 ,  F16C32/0451 ,  H02N15/00 ,  F16C2231/00 ,  F16C2360/44

摘要： A method for controlling an initial position of a magnetically levitated body comprises sensing the position of the levitated body by position sensors and applying exciting currents to electromagnets in response to the sensed position to adjust the position of the body to an initial central position. The sensing step comprises detecting a first limiting position of the body in a first direction and detecting a second limiting position of the body in a second direction opposite the first direction. The applying step comprises calculating a central position from the first and second limiting positions and applying exciting currents to the electromagnets to move the body into the calculated central position. An apparatus for controlling positioning of a magnetically levitated body based on limiting positions is also disclosed.

摘要翻译： 用于控制磁悬浮体的初始位置的方法包括通过位置传感器感测悬浮体的位置，并响应于感测到的位置向电磁体施加激励电流，以将身体的位置调整到初始中心位置。 感测步骤包括：检测身体在第一方向上的第一限位位置，并在与第一方向相反的第二方向上检测身体的第二限位位置。 所述施加步骤包括从所述第一和第二限制位置计算中心位置并向所述电磁体施加激励电流以将所述主体移动到所计算的中心位置。 还公开了一种用于基于限制位置来控制磁悬浮体的定位的装置。

公开(公告)号：US06949853B2

公开(公告)日：2005-09-27

申请号：US10803776

申请日：2004-03-18

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： F04D29/056 ,  F04D19/04 ,  F04D29/058 ,  F16C32/04 ,  F16C39/06 ,  H02N15/00 ,  H02K7/09

CPC分类号： F16C32/0457 ,  F04D19/048 ,  F16C32/0442 ,  F16C32/0489 ,  F16C2360/45

摘要： A magnetic bearing device is provided which is capable of reducing vibration, as well as electric and magnetic noise, generated from a pump device while making it possible to control the position of a rotor at high speed and high power. Also provided is a pump device having the magnetic bearing device mounted thereto. Switching is made between a high-voltage mode in which an electromagnet coil is supplied with electric power from a high voltage power source and a low voltage mode in which the electromagnet coil is supplied with electric power from a low voltage power source. The switching is made based on whether or not a current change speed is below a reference current change speed. When the current change speed is equal to or larger than the reference current change speed, the device is switched to the high voltage mode. When the current change speed is less than the reference current change speed, the device is switched to the low voltage mode.

摘要翻译： 提供一种磁轴承装置，其能够减少由泵装置产生的振动以及电和磁噪声，同时能够以高速和高功率控制转子的位置。 还提供了一种具有安装在其上的磁性轴承装置的泵装置。 在其中向电磁线圈供给来自高压电源的电力的高电压模式和其中从低电压电源向电磁线圈提供电力的低电压模式之间进行切换。 基于当前的变化速度是否低于参考电流变化速度进行切换。 当电流变化速度等于或大于参考电流变化速度时，器件切换到高电压模式。 当电流变化速度小于参考电流变化速度时，器件切换到低电压模式。

公开(公告)号：US06759827B2

公开(公告)日：2004-07-06

申请号：US09955389

申请日：2001-09-18

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： H02P700

CPC分类号： H02P6/14 ,  H02P6/20

摘要： To provide a control circuit or the like of a brush-less motor capable of properly controlling current of motor windings by detecting positions of magnetic poles of a rotor at a rotational frequency of the rotor from low rotation which cannot lock a PLL circuit to steady-state rotation for rotating at high speed. Positions of magnetic poles are detected by a change in a magnetic flux (magnetic flux signal) of motor windings caused by rotating a rotor having the magnetic poles, thereby, a synchronizing signal (ROT signal) in synchronism with rotation of the rotor is generated. When the rotor is rotated at a low rotational frequency which cannot lock a PLL circuit, the rotor is driven by using predetermined two driving voltage vectors among outputable driving voltage vectors and when a rotational frequency capable of locking the PLL circuit is reached, the rotor is driven by successively outputting the outputable driving voltage vectors in synchronism with the positions of the magnetic poles detecting the outputable driving voltage vectors. Further, the magnetic flux signal is provided by using voltage between two phases at which phases and magnitudes of voltage drop caused by inductances of motor windings are equal to each other.

摘要翻译： 为了提供一种无刷电动机的控制电路等，能够通过从转子的旋转频率检测转子的磁极的位置来适当地控制电动机绕组的电流，该低转速不能将PLL电路锁定到稳定状态， 高速旋转状态旋转。 通过由具有磁极的转子旋转引起的电动机绕组的磁通量（磁通信号）的变化来检测磁极的位置，由此产生与转子的旋转同步的同步信号（ROT信号）。 当转子以不能锁定PLL电路的低旋转频率旋转时，通过在可输出的驱动电压矢量中使用预定的两个驱动电压矢量来驱动转子，并且当达到能够锁定PLL电路的旋转频率时，转子是 通过与检测可输出驱动电压矢量的磁极的位置同步地连续地输出可输出的驱动电压矢量来驱动。 此外，通过使用两相之间的电压来提供磁通量信号，在两相之间的电压相位和由电动机绕组的电感引起的电压降幅度彼此相等。

公开(公告)号：US08248019B2

公开(公告)日：2012-08-21

申请号：US12602097

申请日：2008-05-12

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： H02P7/00

CPC分类号： H02P6/18 ,  H02P1/24 ,  H02P6/20 ,  H02P21/00 ,  H02P27/04 ,  H02P29/00

摘要： To further improve the stability of drive control for the start period of a motor without complicating a circuit configuration.During the period in which the rotational speed of a rotor does not reach the rotational speed capable of locking a PLL circuit, a drive control method of two-phase mode in which a start current is supplied by two energizing patterns is used. In energizing pattern A, a current is caused to flow in a motor winding in the direction from U to W and in the direction from V to W at the same time. In energizing pattern B, a current is caused to flow in the motor winding in the direction from W to U and in the direction from W to V at the same time. A potential difference Vu-v between a U phase and a V phase in which the phase and magnitude of voltage drop due to inductance are equal is detected. Based on the detected potential difference Vu-v, a magnetic flux estimation signal φu-v is calculated by an integrator. Then, based on the magnetic flux estimation signal φu-v, an ROT signal is sent from a comparator. The energizing pattern of the start current is switched over according to the ROT signal, and torque in the normal rotation direction is developed, by which the rotor is accelerated.

摘要翻译： 为了进一步提高电动机起动周期的驱动控制的稳定性，不会使电路结构复杂化。 在转子的旋转速度未达到能够锁定PLL电路的转速的期间中，使用通过两个通电图案供给起动电流的两相模式的驱动控制方法。 在通电模式A中，使电流在电动机绕组中从U到W的方向以及从V到W的方向同时流动。 在通电图案B中，使电流从W向U方向从W向V方向流动。 检测U相和V相之间的电位差Vu-v，其中由电感引起的电压降的相位和幅度相等。 基于检测到的电位差Vu-v，由积分器计算磁通量估计信号u u v。 然后，基于磁通量估计信号＆phgr; u-v，从比较器发送ROT信号。 启动电流的通电模式根据ROT信号切换，并且正常旋转方向的转矩被显影，转子被加速。

公开(公告)号：US07292425B2

公开(公告)日：2007-11-06

申请号：US11088063

申请日：2005-03-23

申请人： Toshiaki Kawashima ,  Hirotaka Namiki ,  Hideo Fukami

发明人： Toshiaki Kawashima ,  Hirotaka Namiki ,  Hideo Fukami

IPC分类号： H02K7/09

CPC分类号： F04D19/048 ,  F16C32/0446 ,  F16C32/0476 ,  F16C2360/45

摘要： To provide a magnetic bearing device capable of reducing vibration by preventing a deterioration in the control of a rotor shaft due to a variation in the axial position of the rotor shaft, while performing positional control over the rotor shaft in a specific attitude with optimal magnetic force, and to a turbo molecular pump with the magnetic bearing device mounted thereto. A sensitivity storage section 281 stores therein a sensor sensitivity used in a sensor sensitivity adjustment. The sensitivity storage section 281 outputs the stored sensor sensitivity to a sensitivity switching section. The sensitivity switching section switches the sensor sensitivity according to the situation, and outputs the result to a sensor signal amplifier section. The sensor signal amplifier section 252 performs, to a sensor signal, the sensor sensitivity adjustment according to the sensor sensitivity stored in the sensitivity storage section 281, and outputs, to an A/D converter 154, a sensor output signal 153 having a sensor output voltage V after the sensor sensitivity adjustment.

摘要翻译： 为了提供一种能够通过防止由于转子轴的轴向位置的变化导致的转子轴的控制的劣化而能够减小振动的磁性轴承装置，同时以最佳磁力以特定的姿态对转子轴进行位置控制 以及安装有磁性轴承装置的涡轮分子泵。 灵敏度存储部分281存储传感器灵敏度调节中使用的传感器灵敏度。 灵敏度存储部分281将存储的传感器灵敏度输出到灵敏度切换部分。 灵敏度切换部根据情况切换传感器灵敏度，并将结果输出到传感器信号放大部。 传感器信号放大器部分252根据存储在灵敏度存储部分281中的传感器灵敏度对传感器信号执行传感器灵敏度调节，并将具有传感器输出的传感器输出信号153输出到A / D转换器154 传感器灵敏度调整后的电压V。

公开(公告)号：US07091641B2

公开(公告)日：2006-08-15

申请号：US10803775

申请日：2004-03-18

申请人： Toshiaki Kawashima ,  Masayuki Yamamoto

发明人： Toshiaki Kawashima ,  Masayuki Yamamoto

IPC分类号： H02K7/09 ,  H01F17/00 ,  G05B5/01

CPC分类号： F16C32/0457 ,  F04D19/048 ,  F16C32/0489 ,  F16C2360/45

摘要： To provide a magnetic bearing device capable of lowering the costs required for the manufacture, installation, or the like of a turbo molecular pump by reducing the number of elements of an amplifier circuit that drives, through excitation, electromagnets as well as the number of wires of a cable that connects the each electromagnet and the amplifier circuit to each other, and a turbo molecular pump with the magnetic bearing device mounted thereto. One end of an electromagnet coil is connected to a common node. Also, the other end thereof is connected to an amplifier circuit composed of one transistor and one diode. Further, the one end of the electromagnet coil is common with respect to each of the electromagnets, and the common node R is controlled by an intermediate-voltage maintaining circuit so as to maintain an intermediate voltage.

摘要翻译： 为了提供能够降低涡轮分子泵的制造，安装等所需成本的磁轴承装置，通过减少通过激励驱动电磁体的放大器电路的元件数量以及电线数量 将每个电磁体和放大器电路彼此连接的电缆，以及安装有磁性轴承装置的涡轮分子泵。 电磁线圈的一端连接到公共节点。 此外，其另一端连接到由一个晶体管和一个二极管组成的放大器电路。 此外，电磁线圈的一端相对于每个电磁体是共同的，并且公共节点R由中间电压保持电路控制以便保持中间电压。

公开(公告)号：US20050212370A1

公开(公告)日：2005-09-29

申请号：US11088063

申请日：2005-03-23

申请人： Toshiaki Kawashima ,  Hirotaka Namiki ,  Hideo Fukami

发明人： Toshiaki Kawashima ,  Hirotaka Namiki ,  Hideo Fukami

IPC分类号： F04D19/04 ,  F16C32/04 ,  F16C39/06 ,  H02K7/09

CPC分类号： F04D19/048 ,  F16C32/0446 ,  F16C32/0476 ,  F16C2360/45

摘要： To provide a magnetic bearing device capable of reducing vibration by preventing a deterioration in the control of a rotor shaft due to a variation in the axial position of the rotor shaft, while performing positional control over the rotor shaft in a specific attitude with optimal magnetic force, and to a turbo molecular pump with the magnetic bearing device mounted thereto. A sensitivity storage section 281 stores therein a sensor sensitivity used in a sensor sensitivity adjustment. The sensitivity storage section 281 outputs the stored sensor sensitivity to a sensitivity switching section. The sensitivity switching section switches the sensor sensitivity according to the situation, and outputs the result to a sensor signal amplifier section. The sensor signal amplifier section 252 performs, to a sensor signal, the sensor sensitivity adjustment according to the sensor sensitivity stored in the sensitivity storage section 281, and outputs, to an A/D converter 154, a sensor output signal 153 having a sensor output voltage V after the sensor sensitivity adjustment.

摘要翻译： 为了提供一种能够通过防止由于转子轴的轴向位置的变化导致的转子轴的控制的劣化而能够减小振动的磁性轴承装置，同时以最佳磁力以特定的姿态对转子轴进行位置控制 以及安装有磁性轴承装置的涡轮分子泵。 灵敏度存储部分281存储传感器灵敏度调节中使用的传感器灵敏度。 灵敏度存储部分281将存储的传感器灵敏度输出到灵敏度切换部分。 灵敏度切换部根据情况切换传感器灵敏度，并将结果输出到传感器信号放大部。 传感器信号放大器部分252根据存储在灵敏度存储部分281中的传感器灵敏度对传感器信号执行传感器灵敏度调节，并将具有传感器输出的传感器输出信号153输出到A / D转换器154 传感器灵敏度调整后的电压V。

公开(公告)号：US06184640B2

公开(公告)日：2001-02-06

申请号：US09299466

申请日：1999-04-26

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： H02P104

CPC分类号： H02P6/06 ,  F04D19/042 ,  F04D19/048 ,  F04D27/001 ,  F04D27/0292 ,  F16C2360/45 ,  H02H7/093 ,  H02P1/04 ,  H02P6/34

摘要： A turbomolecular pump device having a DC brushless motor provided with a simplified rpm detection mechanism is provided. A pickup coil for detecting a magnetic flux produced by a permanent magnet of the DC brushless motor is built in the motor. Namely, a small size, low cost, simple and strong pickup coil is disposed in a space between the permanent magnet (rotor) of the DC brushless motor and the motor drive coil (stator coil). The magnetic flux produced by the permanent magnet in the pickup coil is detected. This is converted into an rpm signal of the DC brushless motor by a sequence controlling circuit. It is supervised whether or not the overspeed is performed. Then, when the overspeed is detected, an interruption command is fed to the power source breaker so that the supply of the power is forcibly interrupted to thereby stop the DC brushless motor.

摘要翻译： 提供了具有简化的转速检测机构的直流无刷电动机的涡轮分子泵装置。 用于检测由直流无刷电动机的永磁体产生的磁通的拾波线圈被内置在电动机中。 也就是说，在直流无刷电动机的永磁体（转子）与电动机驱动线圈（定子线圈）之间的空间内设置有小型，低成本，简单且强大的拾波线圈。 检测由拾取线圈中的永久磁铁产生的磁通量。 通过顺序控制电路将其转换成直流无刷电动机的转速信号。 监督是否执行超速。 然后，当检测到超速时，向电源断路器供给中断指令，从而强制中断供电，从而停止直流无刷电动机。

公开(公告)号：US07786636B2

公开(公告)日：2010-08-31

申请号：US10591626

申请日：2005-02-28

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： H02K7/09 ,  F16C39/00

CPC分类号： F04D19/042 ,  F04D29/058 ,  F16C32/0457 ,  F16C32/0489 ,  F16C2360/45 ,  H03F3/2173 ,  H03F2200/421

摘要： A magnetic bearing device has a rotor, electromagnets that control axial/radial positions of the rotor, and a power source that supplies power to the electromagnets. A switching circuit switches a voltage of a common node connected to each one end of the electromagnets. The switching circuit includes a first switch element that connects and disconnects between one end of the power source and the common node, and a first rectifier element connected between the other end of the power source and the common node. An excitation control circuit controls excitation of each of the electromagnets by a supply current that flows through the electromagnets in one direction or a regenerated current that flows through the electromagnets in one direction. The excitation control circuit includes a second switch element that connects and disconnects between the other end of one of the electromagnets and the other end of the power source, and a second rectifier element connected between the other end of one of the electromagnets and the one end of the power source.

摘要翻译： 磁性轴承装置具有转子，控制转子​​的轴向/径向位置的电磁体以及向电磁体供电的电源。 开关电路切换连接到电磁体的每一端的公共节点的电压。 开关电路包括在电源的一端和公共节点之间连接和断开的第一开关元件和连接在电源的另一端和公共节点之间的第一整流元件。 励磁控制电路通过在一个方向上流过电磁体的供给电流或者在一个方向上流过电磁体的再生电流来控制每个电磁体的激励。 励磁控制电路包括：第二开关元件，其连接和断开电磁体中的一个的另一端和电源的另一端;以及第二整流元件，其连接在一个电磁体的另一端和一端 的电源。

公开(公告)号：US20100176756A1

公开(公告)日：2010-07-15

申请号：US12602097

申请日：2008-05-12

申请人： Toshiaki Kawashima

发明人： Toshiaki Kawashima

IPC分类号： H02P6/20 ,  H02P6/18

CPC分类号： H02P6/18 ,  H02P1/24 ,  H02P6/20 ,  H02P21/00 ,  H02P27/04 ,  H02P29/00

摘要： To further improve the stability of drive control for the start period of a motor without complicating a circuit configuration.During the period in which the rotational speed of a rotor does not reach the rotational speed capable of locking a PLL circuit, a drive control method of two-phase mode in which a start current is supplied by two energizing patterns is used. In energizing pattern A, a current is caused to flow in a motor winding in the direction from U to W and in the direction from V to W at the same time. In energizing pattern B, a current is caused to flow in the motor winding in the direction from W to U and in the direction from W to V at the same time. A potential difference Vu-v between a U phase and a V phase in which the phase and magnitude of voltage drop due to inductance are equal is detected. Based on the detected potential difference Vu-v, a magnetic flux estimation signal φu-v is calculated by an integrator. Then, based on the magnetic flux estimation signal φu-v, an ROT signal is sent from a comparator. The energizing pattern of the start current is switched over according to the ROT signal, and torque in the normal rotation direction is developed, by which the rotor is accelerated.

摘要翻译： 为了进一步提高电动机起动周期的驱动控制的稳定性，不会使电路结构复杂化。 在转子的旋转速度未达到能够锁定PLL电路的转速的期间中，使用通过两个通电图案供给起动电流的两相模式的驱动控制方法。 在通电模式A中，使电流在电动机绕组中从U到W的方向以及从V到W的方向同时流动。 在通电图案B中，使电流从W向U方向从W向V方向流动。 检测U相和V相之间的电位差Vu-v，其中由电感引起的电压降的相位和幅度相等。 基于检测到的电位差Vu-v，由积分器计算磁通量估计信号u u v。 然后，基于磁通量估计信号＆phgr; u-v，从比较器发送ROT信号。 启动电流的通电模式根据ROT信号切换，并且正常旋转方向的转矩被显影，转子被加速。