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21. 发明申请

US20140292238A1 Power Conversion Device 审中-公开
标题翻译：电源转换装置
公开(公告)号：US20140292238A1
公开(公告)日：2014-10-02
申请号：US14240598
申请日：2012-08-29
申请人： Kimihisa Furukawa , Toshiyuki Ajima , Hiroyuki Yamada , Toshisada Mitsui
发明人： Kimihisa Furukawa , Toshiyuki Ajima , Hiroyuki Yamada , Toshisada Mitsui
IPC分类号： H02P21/00
CPC分类号： H02P21/50 , B60L3/003 , B60L15/025 , B60L50/16 , B60L50/40 , B60L50/61 , B60L2210/40 , B60L2220/14 , B60L2240/36 , B60L2240/525 , B60L2240/527 , Y02T10/6217 , Y02T10/643 , Y02T10/7022 , Y02T10/7077 , Y02T10/7241
摘要： A power conversion device includes a switching circuit with multiple series circuits having upper arm switching elements connected in series with lower arm switching elements, receives DC power to generate AC power for a permanent magnet motor; a control circuit that calculates a state of the switching elements based on input information for each control cycle, and generates a control signal for controlling switching elements according; and a driver circuit that generates a drive signal that renders the switching elements conductive or non-conductive on the basis of the control signal from the control circuit. The control circuit predicts a locus of a d-axial magnetic flux and a locus of a q-axial magnetic flux, and calculates the state of the switching elements so that the d-axial magnetic flux falls within a given d-axial magnetic flux fluctuation range, and the q-axial magnetic flux falls within a given q-axial magnetic flux fluctuation range.
摘要翻译：电力转换装置包括具有多个串联电路的开关电路，具有与下臂开关元件串联连接的上臂开关元件，接收DC电力以产生用于永磁电动机的AC电力; 控制电路，根据各控制周期的输入信息，计算开关元件的状态，生成控制开关元件的控制信号; 以及驱动电路，其产生基于来自控制电路的控制信号使开关元件导通或不导通的驱动信号。控制电路预测d轴磁通的轨迹和q轴磁通的轨迹，并计算开关元件的状态，使得d轴磁通落在给定的d轴磁通量波动内范围，q轴磁通落在给定的q轴磁通量波动范围内。

22. 发明申请

US20140167662A1 Inverter Device 审中-公开
标题翻译：变频器
公开(公告)号：US20140167662A1
公开(公告)日：2014-06-19
申请号：US14234455
申请日：2012-07-25
申请人： Toshiyuki Ajima , Hiroyuki Yamada , Hiroshi Tamura , Kimihisa Furukawa
发明人： Toshiyuki Ajima , Hiroyuki Yamada , Hiroshi Tamura , Kimihisa Furukawa
IPC分类号： H02P6/16
CPC分类号： H02P6/16 , H02P6/182 , H02P21/18
摘要： An inverter device that controls a motor using a signal from a position sensor for detecting a rotor rotational position of the motor includes an initial adjustment unit that outputs a phase of current for designating a motor rotational position by rotating the motor in a clockwise direction of the motor and a phase of current for designating the motor rotational position by rotating the motor in a counter-clockwise direction of the motor.
摘要翻译：使用来自用于检测电动机的转子旋转位置的位置传感器的信号来控制电动机的逆变器装置包括初始调整单元，其通过使电动机沿着顺时针方向旋转来输出用于指定电动机旋转位置的电流的相位电动机和用于通过沿电动机的逆时针方向旋转电动机来指定电动机旋转位置的电流相位。

23. 发明申请

US20100028165A1 OIL-FLOODED SCREW COMPRESSOR, MOTOR DRIVE SYSTEM, AND MOTOR CONTROL DEVICE 有权
标题翻译：油压螺杆压缩机，电机驱动系统和电动机控制装置
公开(公告)号：US20100028165A1
公开(公告)日：2010-02-04
申请号：US12533097
申请日：2009-07-31
申请人： Hirotaka KAMEYA , Masaru Yamasaki , Toshiyuki Ajima , Masaharu Senoo , Hideharu Tanaka , Norinaga Suzuki
发明人： Hirotaka KAMEYA , Masaru Yamasaki , Toshiyuki Ajima , Masaharu Senoo , Hideharu Tanaka , Norinaga Suzuki
IPC分类号： F04B49/00 , F04B35/04 , F04C29/04 , H02P1/04
CPC分类号： F04B17/03 , F04C18/16 , F04C28/06 , F04C28/08 , F04C2270/051 , F04C2270/19 , F04C2270/701
摘要： When an oil-flooded screw compressor is started up in a cold environment after a long halt, start-up torque increases due to the increased viscosity of the oil that has long stayed inside the working chambers of the compressor. This has necessitated drive means with a larger capacity than that required for normal operation.An oil-flooded screw compressor according to the invention comprises: a casing; a pair of rotors each having screw-thread-shaped groove and being housed in the casing; an electric motor for rotationally driving the pair of rotors; a control device for controlling the electric motor; an oil feeding mechanism for feeding oil into working chambers formed by being enclosed by the casing and the pair of rotors in which teeth thereof are meshed to each other; and an oil separating mechanism for separating the oil from compressed gas discharged from the working chambers. The oil-flooded screw compressor drives the pair of rotors at a rotational speed which is low enough not to increase torque for a short amount of time after start-up and accelerates the pair of rotors up to a normal-operation rotational speed after oil discharge. Alternatively, the oil-flooded screw compressor rotates the pair of rotors for a short amount of time after the remaining compressed gas is discharged after a halt, thereby allowing the oil accumulated inside the working chambers to be discharged and ensuring smooth start-up after the halt.
摘要翻译：当在长时间停止之后，在冷空气环境中启动一个充油螺杆压缩机时，由于长时间停留在压缩机的工作室内的油的粘度增加，启动扭矩增加。这需要比正常操作所需的更大的容量的驱动装置。根据本发明的一种充油螺杆式压缩机包括：壳体; 一对转子，每个转子都具有螺纹形槽并容纳在壳体中; 用于旋转地驱动所述一对转子的电动机; 用于控制电动机的控制装置; 供油机构，用于将油输送到由壳体和由其彼此啮合的一对转子形成的工作室; 以及用于将油与从工作室排出的压缩气体分离的油分离机构。充油螺杆式压缩机以一定的转速驱动一对转子，旋转速度足够低，在启动后不会在短时间内增加扭矩，并且在排油后将一对转子加速至正常操作转速。或者，油压螺杆式压缩机在停止后剩余的压缩气体排出之后使一对转子旋转一段时间，从而允许积聚在工作室内的油排出，并确保顺利启动停。

24. 发明授权

US07161323B2 Motor drive apparatus, electric actuator and electric power steering apparatus 有权
标题翻译：电机驱动装置，电动执行器和电动助力转向装置
公开(公告)号：US07161323B2
公开(公告)日：2007-01-09
申请号：US11158247
申请日：2005-06-22
申请人： Toshiyuki Ajima , Hideki Miyazaki , Satoru Kaneko , Yuuichirou Takamune
发明人： Toshiyuki Ajima , Hideki Miyazaki , Satoru Kaneko , Yuuichirou Takamune
IPC分类号： H02J1/02 , H02P27/00
CPC分类号： H02P6/10 , B62D5/046 , B62D5/0463 , F16D65/18 , F16D2121/24 , H02M2001/0009 , H02P2209/07
摘要： The disclosure concerns a a motor drive apparatus, an electric actuator and an electric power steering apparatus capable of continuous torque control up to the high drive speed and high torque area, in order to enable quick acceleration and deceleration. A controller comprises a voltage saturation detecting apparatus for detecting the voltage saturation of the output voltage of an inverter circuit, based on the battery voltage, and a waveform controller that converts the drive waveform of the inverter circuit into the waveform created by superimposing harmonics of high odd-numbered order on a sinusoidal wave as a fundamental wave of the modulated wave modulated by a PWN carrier wave; and continuously changes the ratio of superimposing the high-order harmonics in response to the voltage saturation detected by a voltage saturation detecting means. This arrangement allows the controller to continuously change the drive waveform of the inverter circuit.
摘要翻译：本发明涉及一种电动机驱动装置，电动执行机构和电动助力转向装置，其能够连续转矩控制，直到高驱动速度和高扭矩区域，以便能够快速加速和减速。控制器包括：电压饱和检测装置，用于基于电池电压检测逆变器电路的输出电压的电压饱和;以及波形控制器，其将逆变器电路的驱动波形转换成通过叠加高次谐波产生的波形作为由PWN载波调制的调制波的基波的正弦波上的奇数次序; 并且响应于由电压饱和检测装置检测的电压饱和而连续地改变叠加高次谐波的比率。这种布置允许控制器连续地改变逆变器电路的驱动波形。

25. 发明申请

US20060125439A1 Synchronous motor drive unit and a driving method thereof 失效
标题翻译：同步电机驱动单元及其驱动方法
公开(公告)号：US20060125439A1
公开(公告)日：2006-06-15
申请号：US11294500
申请日：2005-12-06
申请人： Toshiyuki Ajima , Hideki Miyazaki , Yukio Kawabata , Kiyoshi Sakamoto , Takao Yanai , Osamu Koizumi
发明人： Toshiyuki Ajima , Hideki Miyazaki , Yukio Kawabata , Kiyoshi Sakamoto , Takao Yanai , Osamu Koizumi
IPC分类号： H02P1/46
CPC分类号： B60K6/26 , B60K6/48 , B60L11/14 , B60L15/025 , B60L15/20 , B60L2220/14 , B60L2220/16 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , H02P1/46 , H02P21/22 , Y02T10/6221 , Y02T10/643 , Y02T10/70 , Y02T10/7077 , Y02T10/72 , Y02T10/7275
摘要： A rotary sensor that outputs two analog signals, such as one sine wave and one cosine wave and has multiple periods within one period of the electrical angle of a motor is employed. The motor is energized at each position for a specified length of time upon its startup by using multiple electrical angles corresponding to the multiple candidate absolute angles obtained from the rotary sensor signal as the initial position of the motor, and the electrical angle at which the motor acceleration becomes maximum is determined as the absolute angle. While the motor drive is in operation, on the other hand, the phase difference Δθ between the phase of the motor at the counter electromotive voltage and the control phase is directly computed from the parameters of the motor, sensed current, voltage command and angle speed so as to correct the shifted position. A high-efficiency motor drive unit with improved maintainability of rotary sensor and improved accuracy of sensing the magnet pole position of a permanent magnet synchronous motor that accelerates and decelerates very quickly in a wide range of speed is realized.
摘要翻译：采用旋转传感器，其输出两个模拟信号，例如一个正弦波和一个余弦波，并且在电动机的电角度的一个周期内具有多个周期。电动机通过使用与从旋转传感器信号获得的多个候选绝对角度相对应的多个电角度作为电动机的初始位置和电动机的电角度，在每个位置通电一段指定时间长度的电动机加速度变为最大值被确定为绝对角度。另一方面，在电动机驱动器运行中，电动机相反相电压与控制相之间的相位差Deltatheta直接根据电动机的参数，感应电流，电压指令和角速度来计算以便纠正移位的位置。实现了高效率的电机驱动单元，其具有改进的旋转传感器的可维护性并且提高了感测永磁同步电动机的磁极位置的精度，其在宽的速度范围内非常快速地加速和减速。

26. 发明授权

US07035044B2 Magnetic disk device having a low-profile motor without deterioration in the strength of the enclosure 失效
标题翻译：具有低轮廓电动机的磁盘装置，而不会降低外壳的强度
公开(公告)号：US07035044B2
公开(公告)日：2006-04-25
申请号：US10220371
申请日：2002-06-10
申请人： Asao Nakano , Yuji Fujita , Yasuo Amano , Nobuyuki Ushifusa , Koki Uefuna , Takashi Yamaguchi , Toshiyuki Ajima
发明人： Asao Nakano , Yuji Fujita , Yasuo Amano , Nobuyuki Ushifusa , Koki Uefuna , Takashi Yamaguchi , Toshiyuki Ajima
IPC分类号： G11B17/08
CPC分类号： G11B25/043 , G11B19/2009
摘要： A magnetic disk drive includes a base constituting at least a face included in an enclosure; a shaft secured to the base; a rotor which rotates around the shaft as a rotary axis; a stator for rotating the rotor; and a magnetic disk secured to the rotor; wherein the stator is disposed on a face facing the base. This improves durability of the magnetic disk drive.
摘要翻译：磁盘驱动器包括至少构成包括在外壳中的面的基座; 固定在基座上的轴; 围绕轴旋转的转子作为旋转轴线; 用于使转子旋转的定子; 和固定在转子上的磁盘; 其中所述定子设置在面向所述基座的面上。这提高了磁盘驱动器的耐久性。

27. 发明申请

US20060001392A1 Motor drive apparatus, electric actuator and electric power steering apparatus 有权
标题翻译：电机驱动装置，电动执行器和电动助力转向装置
公开(公告)号：US20060001392A1
公开(公告)日：2006-01-05
申请号：US11158247
申请日：2005-06-22
申请人： Toshiyuki Ajima , Hideki Miyazaki , Satoru Kaneko , Yuuichirou Takamune
发明人： Toshiyuki Ajima , Hideki Miyazaki , Satoru Kaneko , Yuuichirou Takamune
IPC分类号： H02P7/00
CPC分类号： H02P6/10 , B62D5/046 , B62D5/0463 , F16D65/18 , F16D2121/24 , H02M2001/0009 , H02P2209/07
摘要： In an operation range of an actuator subjected to quick acceleration and deceleration, a motor drive apparatus, an electric actuator and an electric power steering apparatus capable of continuous torque control up to the high drive speed and high torque area. A controller comprises a voltage saturation detecting means for detecting the voltage saturation of the output voltage of an inverter circuit, based on the battery voltage, and a waveform controller that converts the drive waveform of the inverter circuit into the waveform created by superimposing harmonics of high odd-numbered order on a sinusoidal wave as a fundamental wave of the modulated wave modulated by a PWN carrier wave; and continuously changes the ratio of superimposing the high-order harmonics in response to the voltage saturation detected by a voltage saturation detecting means. This arrangement allows the controller to continuously change the drive waveform of the inverter circuit.
摘要翻译：在快速加速和减速的执行器的操作范围内，能够连续转矩控制到高驱动速度和高转矩区域的电动机驱动装置，电动执行器和电动转向装置。控制器包括：电压饱和检测装置，用于基于电池电压检测逆变器电路的输出电压的电压饱和;以及波形控制器，其将逆变器电路的驱动波形转换成通过叠加高次谐波产生的波形作为由PWN载波调制的调制波的基波的正弦波上的奇数次序; 并且响应于由电压饱和检测装置检测的电压饱和而连续地改变叠加高次谐波的比率。这种布置允许控制器连续地改变逆变器电路的驱动波形。

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