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    • 7. 发明授权
    • Linear actuator
    • 线性执行机构
    • US08692428B2
    • 2014-04-08
    • US12965053
    • 2010-12-10
    • Shigenori MiyairiKoji Nakatake
    • Shigenori MiyairiKoji Nakatake
    • H02K7/106H02K5/10
    • H02K7/06F16H25/2204F16H25/2454F16H2025/2078
    • A linear actuator having an output shaft with a long moving distance is provided. A linear actuator includes a rotary shaft, a motor portion having a rotor and a stator, a ball screw mechanism including a ball screw nut fixed to a first end of the rotary shaft and a ball screw, a casing assembly including a first end bracket and a second end bracket, an electromagnetic brake device including a rotary brake disc, a stationary brake disc, and an electromagnetic coil, and a brake cover for covering the electromagnetic brake device. The electromagnetic brake device has a hollow structure allowing a second end of the rotary shaft to pass therethrough.
    • 提供具有长移动距离的输出轴的线性致动器。 线性致动器包括旋转轴,具有转子和定子的马达部分,包括固定到旋转轴的第一端的滚珠丝杠螺母和滚珠丝杠的滚珠丝杠机构,壳体组件,包括第一端托架和 第二端支架,包括旋转制动盘,静止制动盘和电磁线圈的电磁制动装置,以及用于覆盖电磁制动装置的制动器盖。 电磁制动装置具有允许旋转轴的第二端通过的中空结构。
    • 8. 发明申请
    • Synchronous motor and a rotation control method thereof, as well as, an inverter for use of the synchronous motor
    • 同步电动机及其旋转控制方法,以及用于同步电动机的逆变器
    • US20050104550A1
    • 2005-05-19
    • US10954076
    • 2004-09-30
    • Hisayuki MiyajimaShigenori MiyairiMutsuo TokashikiHiroshi Watanabe
    • Hisayuki MiyajimaShigenori MiyairiMutsuo TokashikiHiroshi Watanabe
    • H02K1/14H02K1/16H02K1/22H02K1/27H02K21/16H02P23/00H02P27/04H02P5/28
    • H02P23/20
    • A rotation control method of a synchronous motor, the motor comprising: a stator having AC windings thereround; and a rotor, being mounted within said stator, rotatably, wherein on an each surface, opposing to the rotor, of poles building up the stator, are formed plural numbers of teeth portions, and on a surface of the rotor, being made of permanent magnet, opposing to the poles of the stator, are also formed plural numbers of teeth portions, with a width being nearly equal to that of the teeth portion in a circumference direction thereof, and further AC voltages having a predetermined voltage-frequency characteristic is supplied to AC windings wound around the poles of the stator, and the AC voltages supplied from the inverter is so determined in the voltage-frequency characteristic thereof, at least within a part of frequency band equal or less than a predetermined rated frequency, a pull-out torque of the synchronous motor is equal to or greater that a rated pull-out torque at the predetermined rated frequency, thereby providing a synchronous motor and also an inverter to be used for such the synchronous motor, but hardly causing the step-out phenomenon in the operating condition when accelerating and decelerating the synchronous motor.
    • 一种同步电动机的旋转控制方法,所述电动机包括:定子,其周围具有交流绕组; 以及转子,其可转动地安装在所述定子内,其中在与所述转子相对的每个表面上,构成所述定子的杆形成多个齿部分,并且在所述转子的表面上由永久性 与定子的极相对的磁体也形成有多个齿部分,其宽度与齿部分在其圆周方向上的宽度几乎相等,并且还提供具有预定电压 - 频率特性的另外的AC电压 绕组绕在定子的极点上的交流绕组,并且至少在等于或小于预定额定频率的频带的一部分内,在其电压 - 频率特性中确定从逆变器提供的AC电压, 同步电机的输出转矩等于或大于预定额定频率下的额定拉出转矩,从而提供同步电机以及用于这种t的逆变器 同步电动机,但是在同步电动机的加减速时,在操作状态下几乎不产生失步现象。