Control unit for a brushless motor and read/write device including such a control unit
    1.
    发明授权
    Control unit for a brushless motor and read/write device including such a control unit 失效
    一种用于无刷电动机的控制单元和包括这种控制单元的读/写装置

    公开(公告)号:US06362583B1

    公开(公告)日:2002-03-26

    申请号:US09618189

    申请日:2000-07-18

    IPC分类号: H02P618

    CPC分类号: H02P6/18

    摘要: A control unit (1) according to the invention for controlling a brushless motor (5) includes position detection means (10) for generating a signal (S1) which is indicative of the position of the motor (5). The control unit (1) further includes supply means (20a, 20b, 20c) for energizing two or more coils (5a, 5b, 5c) of the motor (5) and output terminals (30a, 30b, 30c) for electrically coupling the coils (5a, 5b, 5c) to the supply means (20a, 20b, 20c). The position detection means (10) include polarity detection means (T3, D3, T4, D4, A1) for generating a polarity signal (S1) which is a measure of the direction of the current (Ia) through at least one of the coils (5a). The control unit (1) in accordance with the invention is particularly suitable for use in a device for reading and/or writing an information carrier (6).

    摘要翻译: 根据本发明的用于控制无刷电动机(5)的控制单元(1)包括用于产生指示电动机(5)的位置的信号(S1)的位置检测装置(10)。 控制单元(1)还包括供电装置(20a,20b,20c),用于对电动机(5)的两个或更多个线圈(5a,5b,5c)和用于电耦合 线圈(5​​a,5b,5c)到供给装置(20a,20b,20c)。 位置检测装置(10)包括用于产生极性信号(S1)的极性检测装置(T3,D3,T4,D4,A1),该极性信号是通过至少一个线圈测量电流(Ia)的方向的量度 (5a)。 根据本发明的控制单元(1)特别适用于用于读取和/或写入信息载体(6)的装置。

    Motor-control device enabling the rotational speed of the motor's rotor to be measured
    2.
    发明授权
    Motor-control device enabling the rotational speed of the motor's rotor to be measured 失效
    能够测量电机转子转速的电动机控制装置

    公开(公告)号:US06724162B2

    公开(公告)日:2004-04-20

    申请号:US09950845

    申请日:2001-09-12

    IPC分类号: H02P308

    摘要: A device for controlling a motor intended to set an arm provided with a head for reading/writing information in motion with respect to a surface carrying information. The device having a controller for enabling the power supply of the winding of the motor to be managed and a measurer for measuring the value of a counter-electromotive force induced in the winding by the movement of the rotor when the power supply of the winding is interrupted. This device enables the angular speed of the arm to be measured and controlled during an emergency return phase of the arm towards a rest position.

    摘要翻译: 一种用于控制用于设置具有用于读取/写入相对于承载信息的表面的信息的头部的臂的电机的装置。 该装置具有用于使得能够管理电动机的绕组的电源的控制器,以及用于当绕组的电源为绕组的电源时通过转子的移动来测量在绕组中感应的反电动势的值的测量器 中断了 该装置能够在手臂的紧急返回阶段朝向静止位置测量和控制臂的角速度。

    Method of energizing a polyphase motor having an increased energy efficiency
    3.
    发明授权
    Method of energizing a polyphase motor having an increased energy efficiency 失效
    对具有增加的能量效率的多相电动机通电的方法

    公开(公告)号:US06479955B2

    公开(公告)日:2002-11-12

    申请号:US09730427

    申请日:2000-12-05

    IPC分类号: H02K2900

    CPC分类号: H02P6/085

    摘要: The invention relates to a method of energizing a polyphase motor by means of a plurality of coils (E1, E2, E3), each coil intended to be excited by means of a control signal (I1, I2, I3). The method in accordance with the invention comprises the following steps: identifying the control signal having the largest absolute value, and connecting the corresponding coil to a reference-potential terminal (VCC or GND). The invention enables the losses caused by switching operations in the power stages energizing the coils to be reduced, and to increase the efficiency of the power supply device of the motor.

    摘要翻译: 本发明涉及一种通过多个线圈(E1,E2,E3)激励多相电动机的方法,每个线圈旨在通过控制信号(I1,I2,I3)激励。 根据本发明的方法包括以下步骤:识别具有最大绝对值的控制信号,并将相应的线圈连接到参考电位端子(VCC或GND)。本发明使得由电源中的开关操作引起的损耗 对要减少的线圈进行通电,并且提高电动机的电源装置的效率。