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    • 2. 发明申请
    • Driving system of permanent magnet synchronous motor
    • 永磁同步电机驱动系统
    • US20110050140A1
    • 2011-03-03
    • US12805840
    • 2010-08-20
    • Toshifumi SakaiYoshitaka IwajiKiyoshi SakamotoYoshiyuki TaguchiDaigo Kaneko
    • Toshifumi SakaiYoshitaka IwajiKiyoshi SakamotoYoshiyuki TaguchiDaigo Kaneko
    • H02P6/18
    • H02P9/30H02M7/53873H02P6/18H02P9/009H02P21/18
    • When applying a high frequency voltage which alternates on positive and negative sides to a permanent magnet synchronous motor, a driving system of synchronous motor switches the applied voltage phase by 120 degrees successively and applies resultant voltages to three phases. A pulsating current generated by applying a high frequency voltage is detected at timing of elapse of a predetermined time Δt since an output voltage of at least one phase has changed from a state in which all output voltages of the three phases of a power converter are positive or negative. Current detection is conducted by using a DC resistor or a phase current sensor provided on a DC bus. A magnetic pole estimation unit calculates the rotor magnetic pole position of the permanent magnet synchronous motor on the basis of differences between positive side and negative side change quantities in three-phase currents obtained from detected current values.
    • 当施加在正极和负极侧交替永磁同步电动机的高频电压时,同步电动机的驱动系统连续地将施加的电压相位切换120度,并将合成的电压施加到三相。 由于至少一相的输出电压已经从功率转换器的三相的所有输出电压的状态发生变化,所以在经过预定时间&Dgr; t的定时检测施加高频电压而产生的脉动电流 是正或负。 通过使用直流母线上提供的直流电阻或相电流传感器进行电流检测。 磁极估计单元根据从检测到的电流值得到的三相电流的正侧和负侧的变化量之差,来计算永磁同步电动机的转子磁极位置。
    • 8. 发明授权
    • Method of estimating a rotor position of synchronous motor, method of controlling synchronous motor with no position sensor and a controller of synchronous motor
    • 估算同步电机转子位置的方法,无位置传感器同步电机控制方法和同步电机控制器
    • US06396229B1
    • 2002-05-28
    • US09654086
    • 2000-09-01
    • Kiyoshi SakamotoTsunehiro EndouNaohiko TakahashiHaruo MiuraHiroshi Fujii
    • Kiyoshi SakamotoTsunehiro EndouNaohiko TakahashiHaruo MiuraHiroshi Fujii
    • H02P618
    • H02P6/18H02P21/18H02P2207/05
    • In a method of accurately estimating the rotor position of a synchronous motor having saliency from observable quantities, a control system for adjusting an output frequency of an inverter on the basis of a value of axis shift of the synchronous motor to operate the motor synchronously with the output frequency is provided with an induced voltage estimating/axis shift operating unit. Currents resulting from conversion of detection currents on a control axis, voltage commands to be inputted to an inverse converter and a speed command are inputted to the operating unit to estimate an induced voltage of the motor 2 and determine the axis shift from a phase of the estimated induced voltage. By using an electrical constant Lq of inductance, a voltage drop across the inductance is determined by the product of a motor speed command and magnitude of motor current. The voltage drop is a virtual quantity that does not depend on the motor rotor position. A vector of the virtual quantity is so introduced as not to change a phase of the original induced voltage.
    • 在以可观测量准确估计具有显着性的同步电动机的转子位置的方法中,基于同步电动机的轴移动值来调整逆变器的输出频率的控制系统,以与电动机同步地操作电动机 输出频率设置有感应电压估计/轴移动操作单元。 控制轴上的检测电流转换所产生的电流,输入到逆变换器的电压指令和速度指令被输入到运算单元,以估计电动机2的感应电压,并从 估计感应电压。 通过使用电感的电常数Lq,电感上的电压降由电机速度指令和电机电流的大小决定。 电压降是不依赖于电机转子位置的虚拟量。 如此引入虚拟量的矢量不改变原始感应电压的相位。
    • 9. 发明授权
    • Copy system
    • 复制系统
    • US5043762A
    • 1991-08-27
    • US154471
    • 1988-02-05
    • Hiroshi IwakiKiyoshi SakamotoShinichi KikkawaAkira InadaShuuji WatanabeAkihiko Sutoh
    • Hiroshi IwakiKiyoshi SakamotoShinichi KikkawaAkira InadaShuuji WatanabeAkihiko Sutoh
    • G03G15/00
    • G03G15/5066G03G15/5016G03G2215/00092
    • A copy system includes a combination of a tablet and an input pen for inputting copy condition information such as a control condition and an editing condition, and a copying machine for forming a copy image in accordance with a copy condition information as inputted. An IC card insertion portions are respectively formed on the tablets and the copying machine. When the control condition, for example, a copy quantity and a copy magnification, and the editing condition, for example, an editing function and a positional data are inputted by the input pen and the tablet in the state where the IC card is loaded to the tablet, the inputted copy condition information is stored in the IC card. Thereafter, the IC card is unloaded from the tablet and inserted to the copying machine. The copy condition information is led from the inserted IC card to the copying machine. Upon an operation of a start key, a copy image of an original put on an original table is formed in accordance with the copy condition information read out from the IC card.
    • 复制系统包括平板电脑和输入笔的组合,用于输入诸如控制条件和编辑条件的复制条件信息,以及用于根据输入的复制条件信息形成复印图像的复印机。 在片剂和复印机上分别形成IC卡插入部。 当在加载IC卡的状态下通过输入笔和平板电脑输入控制条件,例如复印量和复印倍率以及编辑条件,例如编辑功能和位置数据时 平板电脑将输入的复制条件信息存储在IC卡中。 此后,IC卡从平板电脑卸载并插入复印机。 复制条件信息从插入的IC卡引导到复印机。 在开始键的操作时,根据从IC卡读出的复印条件信息,形成放在原稿台上的原件的复印图像。