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    • 1. 发明授权
    • Electrostriction motor
    • 电动马达
    • US4779019A
    • 1988-10-18
    • US83799
    • 1987-08-07
    • Kazumasa OnishiMikio Umeda
    • Kazumasa OnishiMikio Umeda
    • H02N2/00H01L41/09H02N2/16H01L41/08
    • H02N2/163
    • An electrostriction motor provided with an oscillator having an electrostriction element bonded to an elastic solid, and a moving solid contacted with the phase boundary of the elastic solid of the oscillator. The electrostriction element is continuously polarized in the moving direction of said moving solid to include a directly-expanded and -contracted pole to which a cycle voltage is applied, and dependently-expanded and -contracted poles which are positioned on right and left sides of the directly-expanded and -contracted pole, and it is also polarized in such a way that the directly-expanded and -contracted pole and one of the dependently-expanded and -contracted poles have the same polarity, while the remaining dependently-expanded and -contracted pole has a polarity different from that of the directly-expanded and -contracted pole. Therefore, the electrostriction motor can be driven by a cycle voltage having a single phase, and its supply power circuit and wiring can be made simpler accordingly.
    • 设有具有与弹性固体接合的电致伸缩元件的振荡器的电致伸缩电动机和与振荡器的弹性体的相边界接触的移动固体。 电致伸缩元件在所述移动固体的移动方向上连续极化,以包括施加循环电压的直接膨胀和收缩的极,以及位于所述移动固体的右侧和左侧的依赖性扩大的和承受的极 直接膨胀和收缩的极点,并且还以这样的方式极化,使得直接膨胀和收缩的极和其中一个依赖膨胀和收缩的极具有相同的极性,而剩余的依赖性地扩大和 - 收缩极具有与直接膨胀和收缩极的极性不同的极性。 因此,电致伸缩电动机可以由具有单相的循环电压驱动,并且其电源电路和布线可以相应地变得更简单。
    • 2. 发明授权
    • Stepping motor and a method of driving the same
    • 步进电机及其驱动方法
    • US5001382A
    • 1991-03-19
    • US404373
    • 1989-09-07
    • Mikio UmedaKazumasa OhnishiMinoru Kurosawa
    • Mikio UmedaKazumasa OhnishiMinoru Kurosawa
    • H01L41/09H02N2/12H01L41/08
    • H01L41/0993H02N2/101
    • According to the invention, there is provided a stepping motor comprising a laminate type torsion actuator having a pair of cylindrical outer peripheries to be torsionally displaced relative to each other, a cylindrical fixed member surrounding said laminate type torsion actuator with certain space therebetween, first longitudinally vibrating elements placed between said fixed member and one of the cylindrical outer peripheries of said laminate type torsion actuator for selectively connecting or separating the fixed member and the torsion actuator through its elongation or contraction, second longitudinally vibrating elements placed between said fixed member and the other cylindrical peripheries of said torsion actuator with certain space therebetween for selectively connecting or separating the fixed member and the torsion actuator through its elongation or contraction with a phase inverse to that of the first elements. Such a stepping motor allows fine control of its rotary speed and position and large torque.
    • 根据本发明,提供了一种步进电动机,其包括层叠型扭转致动器,其具有相对于彼此扭转位移的一对圆柱形外周,围绕所述层叠型扭转致动器的圆柱形固定构件,其间具有一定间隔,第一纵向 放置在所述固定构件和所述层叠型扭转致动器的圆柱形外周中的一个的振动元件,用于通过其伸长或收缩来选择性地连接或分离固定构件和扭转致动器,第二纵向振动元件设置在所述固定构件和另一个之间 所述扭转致动器的圆柱形周边具有一定间隔,用于通过其与第一元件的相位相反的伸长或收缩选择性地连接或分离固定构件和扭转致动器。 这样的步进电机能够精确地控制其转速和位置以及大的扭矩。