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    • 6. 发明授权
    • Multilayer piezoelectric motor
    • 多层压电电机
    • US07211929B2
    • 2007-05-01
    • US11397371
    • 2006-04-04
    • Ze'ev GanorIzhak RafaeliLior ShivNir Karasikov
    • Ze'ev GanorIzhak RafaeliLior ShivNir Karasikov
    • H01L41/08
    • H01L41/0913H01L41/083H02N2/004H02N2/0075
    • A method for accelerating or decelerating a moveable body which body is moved by urging a piezoelectric micromotor to the body in a first direction so that a contact region of the piezoelectric motor is pressed to the body and exciting vibrations in the piezoelectric micromotor at the contact region in the first direction and in a second direction along a direction of motion of the body, said vibrations having a first amplitude in the first direction and a second amplitude in the second direction, the method comprising: a) for acceleration, gradually changing a ratio between the second amplitude relative to the first amplitude from substantially zero to a desired non-zero value; or b) for deceleration, gradually changing the ratio between the second amplitude relative to the first amplitude from a non-zero value to substantially zero.
    • 一种用于通过在第一方向上将压电微型马达推向主体而使身体移动的方法,使得压电马达的接触区域被压向身体并且在接触区域中激发压电微型马达的振动 沿着主体的运动方向在第一方向和第二方向上,所述振动在第一方向上具有第一幅度,在第二方向上具有第二幅度,该方法包括:a)为了加速,逐渐改变比例 在相对于第一幅度的第二幅度从基本上为零到期望的非零值之间; 或b)用于减速,逐渐地将相对于第一幅度的第二幅度之间的比例从非零值变化​​到基本为零。
    • 10. 发明授权
    • Resonance shifting
    • 共振转换
    • US07183690B2
    • 2007-02-27
    • US11103353
    • 2005-04-11
    • Lior ShivIzhak RafaeliZe′ev GanorNir KarasikovHanna Dodiuk-Kenig
    • Lior ShivIzhak RafaeliZe′ev GanorNir KarasikovHanna Dodiuk-Kenig
    • H01L41/08
    • H01L41/253H01L41/0913
    • A piezoelectric vibrator comprising: a thin rectangular piezoelectric plate formed of a material having a Young's modulus having two short edge surfaces and two long edge surfaces and two large planar face surfaces which plate has transverse resonant vibration modes parallel to its short edges and longitudinal resonant vibration modes parallel to its long edges and is formed with at least one cavity; and at least one electrode on each of the planar surfaces that is electrifiable to excite at least one vibration mode of the plate, wherein the at least one cavity is not filled with a material having a Young's modulus substantially equal to the Young's modulus of the material from which the plate is formed, such that the presence of the at least one cavity shifts a resonant frequency of at least one vibration mode of the plate with respect to the resonant frequency that characterizes the at least one vibration mode in the absence of the at least one cavity.
    • 一种压电振动器,包括:由具有两个短边缘表面和两个长边缘表面的杨氏模量的材料形成的薄矩形压电板,以及两个大的平面表面,其具有平行于其短边缘的横向共振振动模式和纵向谐振振动 与其长边平行的模具,并形成有至少一个空腔; 以及每个所述平坦表面上的至少一个电极,所述至少一个电极可充电以激发所述板的至少一个振动模式,其中所述至少一个腔未填充具有基本上等于所述材料的杨氏模量的杨氏模量的材料 由此形成板,使得至少一个空腔的存在使得板的至少一个振动模式的谐振频率相对于在没有at的情况下表征至少一个振动模式的谐振频率 至少一个腔。