ELECTRIC MOTOR SYSTEM
    14.
    发明公开

    公开(公告)号:US20240106300A1

    公开(公告)日:2024-03-28

    申请号:US18471625

    申请日:2023-09-21

    申请人: Ratier-Figeac SAS

    IPC分类号: H02K7/116 H02K11/21 H02K11/33

    CPC分类号: H02K7/116 H02K11/21 H02K11/33

    摘要: A motor system includes a brushless motor with a stator, a rotor having a first number of rotor poles, and a motor shaft connected to the rotor. The motor system also includes control electronics configured to control a brushless motor that has a second, number of rotor poles, different from the first number of rotor poles. The second number of rotor poles is an integer multiple, N, of the first number of rotor poles. A position sensor is communicatively connected to the control electronics. A first gear is mounted on the motor shaft and connected for rotation with the motor shaft, the first gear having a first number of teeth. A second gear is engaged with the first gear, the second gear having a second number of gear teeth. The position sensor is configured to detect an angular position of the second gear and provide it to the control electronics.

    Motor drive device for vehicles
    15.
    发明授权

    公开(公告)号:US11923749B2

    公开(公告)日:2024-03-05

    申请号:US17262794

    申请日:2019-08-09

    申请人: NTN CORPORATION

    CPC分类号: H02K5/225 H02K11/21 H02K7/116

    摘要: A casing (10) is divided into a cylindrical first case portion (51) integrally having a partition part (54), a second case portion (52) connected to one end of the first case portion in an axial direction and configured to cover a second space (S2), and a third case portion (53) connected to the other end of the first case portion in the axial direction and configured to cover a first space (S1). A signal cable passed through a through hole (54c) of the partition part extends from a sensor (72, 73) to an external connector (81) provided in the second case portion or the third case portion, and is anchored to the first case portion (51) in the vicinity of a through hole (54c) of the partition part.

    Brushless direct drive linear servo actuator

    公开(公告)号:US11923744B2

    公开(公告)日:2024-03-05

    申请号:US17622090

    申请日:2020-06-25

    IPC分类号: H02K41/03 H02K11/21

    CPC分类号: H02K41/031 H02K11/21

    摘要: The present disclosure provides a brushless direct drive linear servo actuator, comprising: a stator, a mover and a housing, wherein the stator is a pair of armatures arranged in mirror symmetry at both sides of the mover, the housing integrally encapsulates the stator and forms a cavity for the mover at the mover, and the mover has an output end protruding out of the housing and is linearly movable along a direction of the output end. A displacement signal emitter is provided at a side of the mover, and a signal receiver is provided within a cover arranged outside the housing on said side for detecting a displacement signal emitted by the emitter of the mover. The actuator of the present disclosure is characterized by high reliability, high accuracy and low cost.

    4-PHASE SWITCHED RELUCTANCE MOTOR
    18.
    发明公开

    公开(公告)号:US20240048080A1

    公开(公告)日:2024-02-08

    申请号:US17627648

    申请日:2020-07-06

    发明人: Young Chun JEUNG

    摘要: The present invention relates to a 4-phase switched reluctance motor which is configured as a 4-phase motor by coaxially arranging two 2-phase motor units, is capable of effectively driving forward and backward by calculating a switching angle at a time point earlier than the starting point of an inductance increasing period in forward and backward rotations, maximizes the initial driving torque, and minimizes vibration noise by not generating the biased force on a shaft. Two armatures (301, 302) wound with 8 n (n is an integer) armature salient-poles (311) in a 2-phase winding method and two rotors (401, 402) including 4 n rotor salient-poles (411) are coaxially arranged on a one-to-one correspondence basis, wherein the two rotors (401, 402) are differently arranged by 360°/(16 n) to configure a 4-phase motor. A sensor plate (420), having an angle greater than a pole arc angle (βr) of the armature salient-pole (311) by an angle less than or equal to the pole gap (βg) of the armature salient-pole (311), is symmetrically fixed on the center in the circumferential direction of the rotor salient-pole (411). In addition, sensors (340, 341) are respectively provided at opposite ends of one armature salient-pole (311) of each phase such that a turn-on advanced angle during the forward and backward rotations is optimally predetermined according to the armature salient-pole (311) for each phase.