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    • 2. 发明授权
    • Remote maintenance system
    • 远程维护系统
    • US07783369B2
    • 2010-08-24
    • US11660608
    • 2005-08-24
    • Kazuo ShodaYuki NomuraYoshifumi Nagato
    • Kazuo ShodaYuki NomuraYoshifumi Nagato
    • G05B13/02
    • G05B13/024G05B2219/33284G05B2219/41337G05B2223/06
    • A remote maintenance system 1 is provided with a linear motor apparatus 2, a motor driver 3 for controlling a motor of the linear motion apparatus 2, and a user terminal 4. The motor driver 3 includes a memory which stores parameters relating to motor control. The user terminal 4 acquires the parameters from the motor driver 3, and sends the parameters to a maintenance server 5. Then, the user terminal 4 receives the parameters adjusted by the maintenance servers from the maintenance server 5, and writes the parameter into the memory of the motor driver 3. Thus, the parameters of the linear motion apparatus can be adjusted from remote locations at a high precision.
    • 远程维护系统1设置有线性电动机装置2,用于控制线性运动装置2的电动机的电动机驱动器3和用户终端4.电动机驱动器3包括存储与电动机控制有关的参数的存储器。 用户终端4从电机驱动器3获取参数,并将该参数发送给维护服务器5.然后,用户终端4从维护服务器5接收由维护服务器调整的参数,并将该参数写入存储器 因此,可以从远程位置高精度地调整线性运动装置的参数。
    • 4. 发明授权
    • Servo motor position control device
    • 伺服电机位置控制装置
    • US08508160B2
    • 2013-08-13
    • US12933581
    • 2009-03-27
    • Kazuo ShodaYuki Nomura
    • Kazuo ShodaYuki Nomura
    • H02P21/00
    • G05B5/01G05B11/42G05B19/237G05B2219/42062G05B2219/42215G05B2219/42231
    • Provided is a technique to suppress hunting in a range of a minimum resolution of a pulse encoder when a servo motor has reached a target position and stopped, thereby maintaining a stable stop state. A servo motor position control device uses a cascade configuration having a position control loop as a main loop and a velocity and current control loop as a minor loop. A proportion control is performed for a position control while a proportion integration control is performed for a velocity control and a current control. When the servo motor position has reached the target position and stopped (S201), a current instruction value for the current control is maintained at a value upon stop (S202) and the current control is switched to the proportion control (S204).
    • 提供了一种在伺服电机达到目标位置并停止时抑制脉冲编码器的最小分辨率范围内的波动的技术,从而保持稳定的停止状态。 伺服电动机位置控制装置使用具有作为主回路的位置控制回路和作为次级回路的速度和电流控制回路的级联配置。 在进行速度控制和电流控制的比例积分控制时,进行位置控制的比例控制。 当伺服电机位置已经到达目标位置并停止时(S201),当前控制的当前指令值保持在停止值(S202),电流控制切换到比例控制(S204)。
    • 5. 发明授权
    • Power branching system and power branching method
    • 功率分支系统和功率分支方法
    • US08129928B2
    • 2012-03-06
    • US12376108
    • 2007-08-01
    • Kazuo ShodaYuki NomuraToshiyuki Aso
    • Kazuo ShodaYuki NomuraToshiyuki Aso
    • H02K41/00
    • H02P25/06G01R31/343H02P5/68H02P5/74H02P29/0241H02P29/032
    • Provided is a power branching system for driving a plurality of motors by use of a single servo driver, the power branching system capable of protecting each of the motors.The power branching system of the present invention has power lines 15 branched at some midpoint to connect the plural motors 5 and the servo driver 12; a plurality of current sensors 21 provided at branched power lines 15b for detecting currents supplied to the respective motors 5; and controlling means 22 for receiving current data detected by the plural current sensors 21, determining whether or not the detected currents are balanced and generating an alarm signal when the currents are unbalanced.
    • 提供了一种用于通过使用单个伺服驱动器来驱动多个电动机的功率分配系统,该功率分配系统能够保护每个电动机。 本发明的功率分配系统具有在一些中点分支的电力线15,以连接多个马达5和伺服驱动器12; 设置在分支电源线15b上的多个电流传感器21,用于检测供给各个电动机5的电流; 以及用于接收由多个电流传感器21检测到的电流数据的控制装置22,确定检测到的电流是否平衡,并且当电流不平衡时产生报警信号。
    • 6. 发明授权
    • AC motor driving apparatus and control method
    • 交流电机驱动装置及控制方法
    • US08076890B2
    • 2011-12-13
    • US12295069
    • 2007-03-26
    • Kazuo ShodaYuki NomuraYoshifumi Nagato
    • Kazuo ShodaYuki NomuraYoshifumi Nagato
    • H02P27/00G05B11/28
    • H02P27/08H02M1/126H02P6/20H02P25/06
    • Provided is an AC motor driving apparatus and an AC motor control method capable of utilizing the conventional PWM system as-is even in an ultra-compact AC motor having an extremely few turns of exciting coil and preventing occurring of vibration and noise. The AC motor driving apparatus has an inverter converting a DC voltage to an AC voltage and supplying the AC voltage to an AC motor; a PWM device controlling a magnitude and a frequency of an output voltage of the inverter and means for changing a time constant of the AC motor in accordance with a carrier frequency of the PWM device. Between the PWM device and the AC motor, there is provided a condenser and/or a coil for adjusting the time constant, and the capacity thereof is adjusted in accordance with the carrier frequency of the PWM device.
    • 本发明提供一种AC电动机驱动装置和AC电动机控制方法,其能够在具有极少匝的励磁线圈的超小型AC电动机中使用传统的PWM系统,并且防止振动和噪声的发生。 AC电动机驱动装置具有将DC电压转换为AC电压并将AC电压提供给AC电动机的逆变器; 控制逆变器的输出电压的大小和频率的PWM装置,以及根据PWM装置的载波频率来改变交流电动机的时间常数的装置。 在PWM装置和AC电动机之间,设置有用于调整时间常数的电容器和/或线圈,并且其容量根据PWM装置的载波频率进行调节。
    • 8. 发明申请
    • Reproducing circuit and a magnetic disk apparatus using same
    • 再现电路和使用其的磁盘装置
    • US20070230008A1
    • 2007-10-04
    • US11698164
    • 2007-01-26
    • Toshio ShinomiyaYoichiro KobayashiYuki Nomura
    • Toshio ShinomiyaYoichiro KobayashiYuki Nomura
    • G11B5/03
    • G11B5/40G11B2005/0016
    • A reproducing circuit for magnetic disks wherein a MR head bias voltage does not exceed the specified value during any malfunction of the power supply voltage including the cases of power supply ON/OFF, and the central voltage of the MR head is controlled to the ground. The reproducing circuit for magnetic disk apparatus is composed of a MR head, a bias circuit that provides bias voltage specified relative to the MR head, an amplifying circuit for amplifying the output signals of the MR head, a power supply voltage monitor circuit that monitors the changes in the power supply voltage, and a control circuit that is controlled by the power supply voltage monitor circuit. MR bias voltage does not exceed the specified value during any malfunction of the power supply voltage including the cases of power supply ON/OFF, and the central voltage of the MR head is controlled to the ground such that the MR head is protected.
    • 一种用于磁盘的再现电路,其中在包括电源接通/断开的情况的电源电压的任何故障期间,MR头偏置电压不超过指定值,并且MR磁头的中心电压被控制到地面。 用于磁盘装置的再现电路由MR头,提供相对于MR头指定的偏置电压的偏置电路,用于放大MR磁头的输出信号的放大电路,监视电路的电源电压监视电路 电源电压的变化,以及由电源电压监视电路控制的控制电路。 包括电源ON / OFF在内的电源电压发生故障期间,MR偏置电压不超过规定值,MR磁头的中心电压控制在地,以保护MR磁头。
    • 10. 发明授权
    • Distributed-arrangement linear motor and control method of distributed-arrangement linear motor
    • 分布式线性电机分布式布置线性电机及其分布式布置线性电机的控制方法
    • US08872449B2
    • 2014-10-28
    • US13390212
    • 2010-08-05
    • Toshiro TojoToshiyuki AsoYuki NomuraAkihiro Unno
    • Toshiro TojoToshiyuki AsoYuki NomuraAkihiro Unno
    • H02K41/00H02P6/00H02K41/03H02P25/06H02K11/00
    • H02K41/03H02K11/215H02K2213/09H02P6/006H02P25/06
    • A distributed-arrangement linear motor in which stators are arranged in a distributed manner and a method of controlling the distributed-arrangement linear motor are provided. The linear motor 1 is a linear motor in which a stator and a movable member are relatively movable, wherein the stator and the movable member respectively have periodic structures in which plural kinds of poles of the stator and the movable member (12a, 12b, 12c) (22a, 22b, 22c) which magnetically act each other and arranged periodically subsequently in an order according to the arrangement in a direction of the relative motion therebetween; a plurality of stators are arranged in a distributed manner in the direction of the relative motion; a distance D1, D2 between adjacent stators is not more than a length Lmv of the movable member; the pole of the stator is formed of a coil 11; and a current control unit that controls current to be supplied to the coil based on the distance between the stators is provided.
    • 提供了分布式布置的分布式线性电动机和分配布置的线性电动机的控制方法。 线性电动机1是定子和可动构件相对移动的线性电动机,其中定子和可动构件分别具有定子和可动构件的多种极(12a,12b,12c)的周期性结构 )(22a,22b,22c),它们彼此磁性地相互作用,并且在它们之间的相对运动的方向上按照该布置的顺序周期性地布置; 多个定子以相对运动的方向分布布置; 相邻定子之间的距离D1,D2不大于可动件的长度Lmv; 定子的极由线圈11形成; 并且提供了基于定子之间的距离来控制提供给线圈的电流的电流控制单元。