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    • 62. 发明授权
    • Motor control apparatus, and washing machine and drying machine using the same
    • 电机控制装置,洗衣机和烘干机使用相同
    • US07071641B2
    • 2006-07-04
    • US10896009
    • 2004-07-22
    • Yasuhiro AraiHideki Nakata
    • Yasuhiro AraiHideki Nakata
    • H02P6/18
    • H02P25/024
    • A motor control apparatus includes an inverter circuit for supplying driving power to a motor, a motor current detector for detecting current flowing through the motor, an inverter controller for controlling the inverter circuit based on the output of the detector. The inverter controller has a setting unit for setting various command values to control motor driving status, and a processing unit for controlling the inverter circuit based on the setting on the setting unit. The setting unit sets command value so that a load angle which is an angle between rotor axis and motor applied voltage is operated on the smaller side of the angle that provides the maximum output torque in the load angle-output torque characteristics.
    • 电动机控制装置包括用于向电动机提供驱动电力的逆变器电路,用于检测流过电动机的电流的电动机电流检测器,用于基于检测器的输出来控制逆变器电路的逆变器控制器。 逆变器控制器具有用于设定各种指令值以控制电动机驱动状态的设定单元,以及基于设定单元上的设定来控制逆变器电路的处理单元。 设定单元设定指令值,使得在转矩轴和电动机施加电压之间的角度的负载角度在提供负载角输出转矩特性中的最大输出转矩的角度的较小侧上被操作。
    • 63. 发明授权
    • Motor driving apparatus for use in a dishwasher
    • 用于洗碗机的电机驱动装置
    • US07064517B2
    • 2006-06-20
    • US10997916
    • 2004-11-29
    • Mitsuyuki KiuchiMasahiro SuzukiHideki NakataKaneharu Yoshioka
    • Mitsuyuki KiuchiMasahiro SuzukiHideki NakataKaneharu Yoshioka
    • H02P27/04
    • H02P6/08A47L15/0052A47L15/4225H02P6/21
    • An apparatus for driving a motor of a dishwasher includes an AC power source, a rectification circuit for converting an AC power from the AC power source to a DC power, an inverter circuit for converting the DC power from the rectification circuit to an AC power, a motor driven by the inverter circuit to drive a wash pump and/or a drain pump, a current detector for detecting an output current of the inverter circuit, and a controller for performing a PWM (pulse width modulation) control of the inverter circuit based on an output signal of the current detector to thereby control the motor to rotate at a set rotation speed. A phase difference between an output voltage and the output current of the inverter circuit or a reactive current is controlled to have a predetermined value.
    • 一种用于驱动洗碗机的电动机的装置,包括AC电源,用于将来自AC电源的AC电力转换为DC电力的整流电路,将来自整流电路的DC电力转换为AC电力的逆变器电路, 由逆变器电路驱动的驱动洗涤泵和/或排水泵的电动机,用于检测逆变器电路的输出电流的电流检测器,以及用于以逆变器电路为基础的PWM(脉宽调制)控制的控制器 在电流检测器的输出信号上,由此控制马达以设定的转速旋转。 输出电压与逆变器电路的输出电流或无功电流之间的相位差被控制为具有预定值。
    • 67. 发明授权
    • Electric motor controller
    • 电动机控制器
    • US06850031B2
    • 2005-02-01
    • US10087703
    • 2002-02-28
    • Hideki NakataKaneharu YoshiokaMitsuo UedaYasuhiro Arai
    • Hideki NakataKaneharu YoshiokaMitsuo UedaYasuhiro Arai
    • H02P27/06H02P6/00H02P6/06H02P6/08H02P6/18H02P5/34H02P7/42
    • H02P6/08H02P6/06H02P6/28
    • The present invention provides a motor controller capable of driving a synchronous motor having no position sensor stably at high efficiency by carrying out simple control. In order to attain this purpose, a reactive current is obtained from a motor current and a rotation phase, an error voltage is obtained from the reactive current and the command value of the reactive current, thereby obtaining a motor applied voltage command value Va that is used to compensate for the V/f characteristic of the motor. Furthermore, the motor applied voltage command value Va is applied to an output command computing section, and computed with the rotation phase signal of a wave generation section, thereby obtaining a signal for PWM driving the switching devices of an inverter circuit.
    • 本发明提供一种电动机控制器,其通过进行简单的控制能够以高效率驱动不具有位置传感器的同步电动机。 为了达到这个目的,从电动机电流和旋转相位获得无功电流,从无功电流和无功电流的指令值获得误差电压,从而获得电动机施加电压指令值Va, 用于补偿电机的V / f特性。 此外,电动机施加电压指令值Va被施加到输出指令运算部,利用波形发生部的旋转相位信号进行运算,从而获得用于PWM驱动逆变器电路的开关装置的信号。
    • 68. 发明授权
    • Linear compressor driving device, medium and information assembly
    • 线性压缩机驱动装置,介质和信息装配
    • US06501240B2
    • 2002-12-31
    • US09727020
    • 2000-11-30
    • Mitsuo UedaKaneharu YoshiokaHideki NakataHiroshi Hasegawa
    • Mitsuo UedaKaneharu YoshiokaHideki NakataHiroshi Hasegawa
    • H02K4102
    • F04B35/045F04B49/065
    • A linear compressor driving device for linear compressor driving a piston in a cylinder by means of a linear motor to generate a compressed gas, has an inverter for outputting an alternating current to be supplied to the linear motor; current detecting means for detecting an output current from the inverter; voltage detecting means for detecting an output voltage from the inverter; current amplitude value determining means for determining a current amplitude value of the output current; output power calculating means for calculating an output power from the inverter based on the detected output current and the detected output voltage; frequency determining means for determining a frequency of the output current such that the output power is maximum; and inverter controller for controlling the inverter based on the determined current amplitude value and the determined frequency.
    • 一种用于线性压缩机的线性压缩机驱动装置,其通过线性电动机驱动气缸中的活塞以产生压缩气体,具有用于输出要供给到线性电动机的交流电的逆变器; 用于检测来自逆变器的输出电流的电流检测装置; 电压检测装置,用于检测来自逆变器的输出电压; 电流幅度值确定装置,用于确定输出电流的当前振幅值; 输出功率计算装置,用于根据所检测的输出电流和检测的输出电压来计算来自逆变器的输出功率; 频率确定装置,用于确定输出电流的频率,使得输出功率最大; 以及逆变器控制器,用于基于所确定的电流幅度值和所确定的频率来控制逆变器。
    • 69. 发明授权
    • Optical head and optical information device
    • 光头和光信息设备
    • US08570845B2
    • 2013-10-29
    • US13635503
    • 2011-03-18
    • Hideki NakataHidenori WadaMasahito Nakao
    • Hideki NakataHidenori WadaMasahito Nakao
    • G11B7/12
    • G11B7/1381G11B7/0909G11B7/1275G11B7/131G11B7/1384G11B2007/0013
    • There are provided an optical head and an optical information device capable of downsizing the optical head, and capable of improving the qualities of a focus error signal, a tracking error signal, and a reproduction signal. A light detector (120) includes a light-receiving unit (121) for receiving a reflected light beam from an optical disc, and a package (125) for covering the light-receiving unit (121). The package (125) has a plurality of light guides (124) formed on a light-receiving surface on the light beam incident side of the light-receiving unit (121), and for guiding a reflected light beam to the light-receiving unit (121), and a light shield (114) for shielding a region except for a plurality of the light guides (124) from light.
    • 提供了一种能够使光学头小型化并且能够提高聚焦误差信号,跟踪误差信号和再现信号的质量的光学头和光学信息装置。 光检测器(120)包括用于接收来自光盘的反射光束的光接收单元(121)和用于覆盖光接收单元(121)的封装(125)。 该封装体(125)具有形成在受光单元(121)的光束入射侧的受光面上的多个导光体(124),用于将反射光束导向光接收部 (121),以及用于屏蔽除了多个光导(124)之外的区域的光的遮光罩(114)。
    • 70. 发明申请
    • MOTOR DRIVE SYSTEM AND CONTROL METHOD THEREOF
    • 电机驱动系统及其控制方法
    • US20130141027A1
    • 2013-06-06
    • US13810340
    • 2012-04-23
    • Hideki Nakata
    • Hideki Nakata
    • H02P6/08
    • H02P6/08B60L15/2045B60L2270/142H02P6/085H02P6/15H02P27/08Y02T10/644Y02T10/645Y02T10/72Y02T10/7283
    • A motor drive system comprising: an inverter that supplies power to a three-phase motor; and a control unit that controls switching elements of upper and lower arms included in the inverter by switching between supply control of controlling the switching elements so that alternating current is supplied to three phases of the three-phase motor and suspension control of controlling the switching elements so that the supply of current is stopped. The suspension control involves: putting and keeping, in a conduction state, a switching element of at least one upper arm each corresponding to one of one or more phases through which current flows in a direction entering the three-phase motor at a timing at which the supply of current is stopped, and putting and keeping switching elements of rest of the upper arms and switching elements of lower arms in a non-conduction state.
    • 一种电动机驱动系统,包括:向三相电动机供电的逆变器; 以及控制单元,其通过切换控制开关元件的供给控制来控制逆变器中的上下臂的开关元件,从而将三相电动机的三相交流供给到控制开关元件的三相 使得电流的供应停止。 悬架控制包括:在导通状态下放置和保持至少一个上臂的开关元件,每个至少一个上臂对应于在进入三相电动机的方向上流过电流的一个或多个相中的一个, 电流的供给停止,将上臂的其余部分和下臂的开关元件放置并保持在非导通状态。