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    • 81. 发明授权
    • Oscillation motor
    • 振荡电机
    • US4076998A
    • 1978-02-28
    • US716535
    • 1976-08-23
    • Jean I. Montagu
    • Jean I. Montagu
    • H02K7/08H02K33/10H02K33/12
    • H02K33/10H02K7/08
    • A bearing free oscillation motor has a stator component that defines a cylindrical cavity and a rotor component with a cylindrical portion disposed within the cavity and spaced from the cavity wall by an annular gap of radial width in the range of one-five percent of the diameter of the cylindrical portion. The rotor is supported for rotation about its axis by attachment to one end of a torsion shaft that is fixed at its other end to the stator. The motor may be of either the moving coil or the moving magnet type, that is a permanent magnet provides a magnetic field across the annular gap and electric current flow through a drive winding interacts with the magnetic field to produce a torque that rotationally deflects the rotor. Disposed in the annular gap between the stator and rotor is a low viscosity liquid that produces essentially no viscous damping, for example a hydrocarbon oil, a silicone oil or a polymeric liquid. The sheath of liquid in the annular gap provides radial rotor stability against magnetic, dynamic or other forces that tend to cause radial displacement of the rotor. Rotor damping is provided electrically by feedback of velocity signals proportional to the angular velocity of the rotor.
    • 无轴承的振动电动机具有限定圆柱形空腔的定子部件和具有设置在腔体内的圆筒部分的转子部件,并且与空腔壁间隔开径向宽度的直径的百分之一点五的范围的环形间隙 的圆柱形部分。 转子被支撑以通过附接到其另一端固定到定子的扭转轴的一端围绕其轴线旋转。 电动机可以是动圈或移动磁体类型,即永磁体在环形间隙上提供磁场,并且通过驱动绕组的电流与磁场相互作用以产生使转子旋转偏转的转矩 。 设置在定子和转子之间的环形间隙中的是低粘度液体,其基本上不产生粘性阻尼,例如烃油,硅油或聚合物液体。 环形间隙中的液体护套提供径向转子稳定性,抵抗容易导致转子的径向位移的磁力,动态或其他力。 转子阻尼通过与转子的角速度成比例的速度信号的反馈电提供。
    • 82. 发明授权
    • Electromechanical resonator
    • 机电谐振器
    • US4044283A
    • 1977-08-23
    • US624791
    • 1975-10-22
    • William Allison
    • William Allison
    • H04N3/02G02B26/10H02K33/00H02K33/10
    • G02B26/10H02K33/00H02K33/10
    • An electromechanical resonator is disclosed for use in optical scanning systems. The resonator comprises a torsionally resonant system including a torsion rod having one end fixed to a nodal zone member and an oscillatory mass at the free end. A flexurally resonant system includes a pair of oppositely disposed flexure arms extending transversely of the torsional axis and having their inner ends fixed to the nodal zone member. The nodal zone member is suspended by a coupling spring from a frame member and the coupling spring permits energy transfer from the flexurally resonant system to the torsional resonant system through nodal zone member. The resonant systems are maintained in oscillation by electrodynamic means coupled with the flexure arms.
    • 公开了一种用于光学扫描系统的机电谐振器。 谐振器包括扭转谐振系统,其包括具有一端固定到节点构件的扭力杆和在自由端的振荡质量块。 弯曲共振系统包括一对相对设置的弯曲臂,其横向于扭转轴线延伸并且其内端固定到节点区域构件。 节点部件通过联接弹簧从框架构件悬挂,并且联接弹簧允许通过节点构件从挠曲共振系统到扭转谐振系统的能量传递。 谐振系统通过与挠曲臂结合的电动装置保持振荡。