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    • 6. 发明公开
    • DRIVE CIRCUIT FOR A PERMANENT MAGNETIC MOTOR
    • ANSTEUERUNGSSCHALTUNGFÜREINEN PERMANENTMAGNETMOTOR
    • EP2996242A2
    • 2016-03-16
    • EP15180245.1
    • 2015-08-07
    • Johnson Electric S.A.
    • Li, YueSun, Chi PingLiu, Bao TingWang, En HuiXin, FeiYeung, Shing HinYang, Xiu WenCui, Yan YunHuang, Shu Juan
    • H02P7/00H02P7/295H02P6/00H02P7/06
    • A drive circuit for an electric motor having a wound stator (12) and a permanent magnet rotor (14), includes a controllable bidirectional AC switch (28) connected in series with a stator winding (16) between two terminals for connecting to an AC power supply (26). First and second position sensors (20, 22) detect the position of magnetic poles of the rotor. A voltage regulating circuit (30) is connected between the two terminals and the controllable bidirectional AC switch (28) and configured to supply power to the first sensor (20) during the positive cycle and to the second position sensor (22) during the negative cycle of the AC power supply such that the controllable bidirectional AC switch (28) is switched between a conductive state and a nonconductive state in a preset manner, thus enabling the stator (12) to rotate the rotor (14) in only one predetermined direction during start-up.
    • 一种具有缠绕定子(12)和永磁转子(14)的电动机的驱动电路,包括与两个端子之间的定子绕组(16)串联连接的可控双向AC开关(28),用于连接到AC 电源(26)。 第一和第二位置传感器(20,22)检测转子的磁极的位置。 电压调节电路(30)连接在两个端子和可控双向AC开关(28)之间,并被配置为在正周期期间向第一传感器(20)供电,在负向期间向第二位置传感器(22)供电 交流电源的周期,使得可控双向AC开关(28)以预设的方式在导通状态和非导通状态之间切换,从而使定子(12)能够仅在一个预定方向上旋转转子(14) 在启动期间。
    • 8. 发明公开
    • MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING APPARATUS
    • EOTKTRISCHE SERVOLENKVORRICHTUNG摩托罗拉
    • EP2448106A1
    • 2012-05-02
    • EP10792063.9
    • 2010-06-21
    • JTEKT Corporation
    • UEDA, TakeshiMAEDA, ShingoSHIMIZU, YoshinobuKOMATSU, Hayato
    • H02P6/18H02P6/08H02P7/06
    • B62D5/046B62D5/0481H02P7/281H02P7/29
    • An angular velocity estimate (ωe) used in motor control of an electric power steering is obtained as follows. In a first state period during which the motor substantially stops its rotation, a resistance calculation unit (52) calculates a motor resistance value (Rc) on the basis of a detected value (Vm) of motor voltage and a detected value (Im) of motor current. An average calculation unit (53) obtains an average value (Rav) of the calculated resistance values (Rc) in a retained period. A current-resistance characteristic that associates motor current with motor resistance is held in a characteristic holding unit (55), and a characteristic updating unit (54) updates the current-resistance characteristic on the basis of the average value (Rav). An estimate calculation unit (56) calculates the angular velocity estimate (ωe) on the basis of the detected value (Vm) of motor voltage, the detected value (Im) of motor current and a motor resistance value (Rm) obtained from the current-resistance characteristic.
    • 如下获得用于电动助力转向器的电动机控制中的角速度估计(Ée)。 在电动机基本上停止转动的第一状态期间,电阻计算部52基于电动机电压的检测值(Vm)和电动机电压的检测值(Im),计算电动机电阻值(Rc) 电机电流。 平均计算单元(53)在保留期间中求出计算出的电阻值(Rc)的平均值(Rav)。 将电动机电流与电动机电阻相关联的电流电阻特性保持在特性保持单元(55)中,特性更新单元(54)基于平均值(Rav)更新电流电阻特性。 估计计算单元(56)基于电动机电压的检测值(Vm),电动机电流的检测值(Im)和从电流获得的电动机电阻值(Rm)来计算角速度估计(Ée) 电阻特性。