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48 条记录 (耗时 0.034 秒)

    Electrical angle detecting apparatus and method, and motor control apparatus
    41.
    发明授权
    Electrical angle detecting apparatus and method, and motor control apparatus 有权
    电气角度检测装置及方法以及电动机控制装置

    公开(公告)号：US06188196B1

    公开(公告)日：2001-02-13

    申请号：US09453693

    申请日：1999-12-03

    申请人： Satoshi Koide ,  Yasutomo Kawabata ,  Eiji Yamada

    发明人： Satoshi Koide ,  Yasutomo Kawabata ,  Eiji Yamada

    IPC分类号： H02P736

    CPC分类号： H02P6/18 ,  B60L11/123 ,  B60L11/14 ,  B60L11/1807 ,  B60L15/025 ,  B60L15/20 ,  B60L2200/26 ,  B60L2220/14 ,  Y02T10/6217 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/72 ,  Y02T10/7275

    摘要： An electrical angle detecting apparatus determines an electrical angle &thgr; from voltages Vd, Vq, and currents Id, Iq along a d-axis and a q-axis of a synchronous motor, by using the following expressions: &thgr;=&thgr;(n−1)+k1×&Dgr;Id+k2×&Sgr;(&Dgr;Id) &Dgr;Id=Id(n)−Id(n−1)−t(Vd−R×Id(n−1)+&ohgr;×Lq×Iq(n−1))/Ld; &ohgr;=(k1×&Dgr;Id+k2×&Sgr;(&Dgr;Id))/t where (n−1) indicates a value of each variable at the previous timing; (n) indicates a value at the given timing; R is the resistance of a coil; t is the determination executing period; and k1, k2 are coefficients. This determination makes it easier to set appropriate gains, so that precision improves. Furthermore, the amount of determination reduces, and the processing time shortens.

    摘要翻译： 电角度检测装置通过使用以下表达式来确定电压Vd，Vq以及沿着同步电动机的d轴和q轴的电流Id，Iq的电角度θ，其中（n-1）表示 每个变量在上一个时间的值; （n）表示给定时刻的值; R是线圈的电阻; t是确定执行期; 而k1，k2是系数。 这个确定使得更容易设置适当的增益，从而提高精度。 此外，确定量减少，处理时间缩短。

    Motor controller and method of controlling motor
    43.
    发明授权
    Motor controller and method of controlling motor 有权
    电机控制器及电机控制方法

    公开(公告)号：US6037741A

    公开(公告)日：2000-03-14

    申请号：US302377

    申请日：1999-04-30

    申请人： Eiji Yamada ,  Yasutomo Kawabata

    发明人： Eiji Yamada ,  Yasutomo Kawabata

    IPC分类号： H02P6/06 ,  H02P6/16 ,  H02P6/18 ,  H02P6/08

    CPC分类号： H02P6/185

    摘要： When there is a change in required torque, the prior art technique may cause the undesirably low accuracy in the sensor-free determination of the electrical angle. A motor controller of the present invention has the following configuration to control the operation of a synchronous motor, in which multi-phase alternating currents flow through coils to rotate a rotor. The motor controller includes an electrical angle determination unit, which applies a voltage for determination to the coils and determines the electrical angle of the rotor in a sensor-free manner, based on the electric currents flowing in response to the applied voltage for determination. The motor controller also has a torque control unit that applies a voltage for torque output to the coils, corresponding to the required torque. An adjustment unit included in the motor controller adjusts the execution timings of the electrical angle determination unit and the torque control unit, so as to prevent the variation in electric current by the torque control unit from affecting the execution of the electrical angle determination unit. One possible procedure schedules the execution timings of the electrical angle determination unit and the torque control unit. Another possible procedure causes the execution of the electrical angle determination unit to wait according to a variation in required torque. This arrangement enables the electrical angle to be determined with a high accuracy even in the case of a torque variation.

    摘要翻译： 当所需扭矩发生变化时，现有技术的技术可能导致无电传感器确定电角度的不精确的低精度。 本发明的电动机控制器具有以下结构来控制同步电动机的操作，其中多相交流电流流过线圈以使转子旋转。 电动机控制器包括电角度确定单元，该电角度确定单元基于响应于施加的电压流动的电流进行确定，向线圈施加用于确定的电压并以无传感器的方式确定转子的电角度。 电动机控制器还具有扭矩控制单元，其对应于所需扭矩，向扭矩输出扭矩输出电压。 包括在电动机控制器中的调节单元调节电角度确定单元和扭矩控制单元的执行定时，以防止扭矩控制单元的电流变化影响电角度确定单元的执行。 一个可能的过程调度电角度确定单元和扭矩控制单元的执行定时。 另一种可能的过程使电角度确定单元的执行根据所需扭矩的变化而等待。 这种布置使得即使在转矩变化的情况下也能够以高精度确定电角度。

    Motor control apparatus and method of controlling motor
    44.
    发明授权
    Motor control apparatus and method of controlling motor 失效
    电动机控制装置及其控制方法

    公开(公告)号：US6025692A

    公开(公告)日：2000-02-15

    申请号：US158283

    申请日：1998-09-22

    申请人： Eiji Yamada ,  Yasutomo Kawabata

    发明人： Eiji Yamada ,  Yasutomo Kawabata

    IPC分类号： H02P27/06 ,  H02P6/00 ,  H02P6/08 ,  H02P7/00

    CPC分类号： H02P6/08 ,  H02P6/28

    摘要： When a required torque increases under the condition of high-speed rotation, the conventional technique can not detect an electrical angle or control a synchronous motor in a sensor-less manner. The direction that passes through the rotating axis of the motor and makes a magnetic flux run through a permanent magnet is defined as the d-axis, whereas the direction that is electrically perpendicular to the d-axis in the rotational plane of the motor is defined as the q-axis. The technique of the present invention applies voltages to the d-axis and the q-axis based on an estimated electrical angle and solves voltage equations with the observed electric currents. The technique then calculates a correction amount of the electrical angle according to errors of the arithmetic operations and controls the motor. The arithmetic operations are carried out by varying the inductance according to the required torque of the motor. One concrete procedure determines the inductance corresponding to a specific motor driving state by interpolation of the table that stores the inductances corresponding to a variety of motor driving states. Another concrete procedure substitutes the driving states at the respective time points into the function that represents the relationship between the inductance and the driving state, so as to determine the inductance.

    摘要翻译： 当在高速旋转的条件下要求转矩增加时，传统技术无法以无传感器方式检测电角度或控制同步电动机。 通过电动机的旋转轴线并使磁通量穿过永磁体的方向被定义为d轴，而在电动机的旋转平面中与d轴电气垂直的方向被限定 作为q轴。 本发明的技术基于估计的电角度对d轴和q轴施加电压，并且用观察到的电流来解决电压方程式。 然后，该技术根据算术运算的误差来计算电角度的校正量并控制马达。 通过根据电动机的所需扭矩改变电感来执行算术运算。 一个具体的过程通过对存储对应于各种电动机驱动状态的电感的表的插值来确定对应于特定电动机驱动状态的电感。 另一个具体的过程将各个时间点的驱动状态代入表示电感和驱动状态之间的关系的函数，以便确定电感。

    Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system
    48.
    发明授权
    Method and apparatus for driving and controlling synchronous motor using permanent magnets as its field system 失效
    使用永磁体作为其现场系统来驱动和控制同步电动机的方法和装置

    公开(公告)号：US5569995A

    公开(公告)日：1996-10-29

    申请号：US288031

    申请日：1994-08-10

    申请人： Yasushi Kusaka ,  Eiji Yamada ,  Yasutomo Kawabata

    发明人： Yasushi Kusaka ,  Eiji Yamada ,  Yasutomo Kawabata

    IPC分类号： B60L11/18 ,  B60L15/02 ,  H02P1/46

    CPC分类号： B60L11/1807 ,  B60L11/1861 ,  B60L15/025 ,  H02P21/22 ,  H02P25/03 ,  B60L2220/14 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705

    摘要： A method and an apparatus for driving and controlling a synchronous motor using permanent magnets as its field system are herein disclosed. When a rotational speed of the synchronous motor using the permanent magnets as the field system is more than a base rotational speed, a current condition computing section computes a field weakening reference current in accordance with a battery voltage, a reference torque and a rotational speed. An inverter performs the field weakening control of the the synchronous motor using the permanent magnets as the field system in accordance with the field weakening reference current sent from the current condition computing section to prevent the deterioration of efficiency and the deficiency of output due to the excessive or insufficient field weakening current. The current condition computing section determines optimum reference current by the use of a converged battery voltage, when the battery voltage is converged to a constant value after initial control.

    摘要翻译： 本文公开了一种使用永磁体作为其现场系统来驱动和控制同步电动机的方法和装置。 当使用永久磁铁作为现场系统的同步电动机的旋转速度大于基本旋转速度时，当前状态计算部分根据电池电压，参考转矩和转速计算弱磁参考电流。 逆变器根据从当前状态计算部发送的弱磁参考电流，使用永磁体作为励磁系统来执行同步电动机的弱磁控制，以防止效率的劣化和由于过度的输出而导致的输出不足 或不足的磁场弱化电流。 当电池电压在初始化控制之后收敛到恒定值时，通过使用汇聚电池电压来确定最佳参考电流。