公开(公告)号：US06400063B2

公开(公告)日：2002-06-04

申请号：US09878867

申请日：2001-06-11

申请人： Akihiro Iino ,  Masao Kasuga

发明人： Akihiro Iino ,  Masao Kasuga

IPC分类号： H01L4108

CPC分类号： H02N2/166 ,  H02N2/147

摘要： A long-life ultrasonic motor is provided which increases the output and efficiency and reduces the wear on a moving body. By mounting such an ultrasonic motor on an electronic apparatus, the electronic apparatus is improved in performances including the size-reduction, thickness-reduction, power saving, etc. By configuring a stable self-excited oscillation circuit between first and third electrodes of a piezoelectric element and applying a drive signal to a second electrode through a phase selection circuit for changing the phase of a self-excited oscillation signal, two signals different in phase are supplied to the ultrasonic motor while using the self-excited oscillation circuit.

摘要翻译： 提供了一种长寿命的超声波马达，其提高了输出和效率，并减少了移动体上的磨损。 通过将这样的超声波马达安装在电子设备上，电子设备的性能包括减小尺寸，减小厚度，省电等。通过在压电体的第一和第三电极之间配置稳定的自激振荡电路 元件，并且通过用于改变自激振荡信号的相位的相位选择电路将驱动信号施加到第二电极，使用自激振荡电路的两个相位不同的信号被提供给超声波马达。

公开(公告)号：US06396194B1

公开(公告)日：2002-05-28

申请号：US09177455

申请日：1998-10-22

申请人： Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki ,  Kenji Suzuki

发明人： Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki ,  Kenji Suzuki

IPC分类号： H01L4104

CPC分类号： H01L41/0906

摘要： An ultrasonic motor has a vibrating body polarized in a given direction. The vibrating body comprises a first piezoelectric body and a second piezoelectric body laminated to the first piezoelectric body in a preselected direction generally parallel to the polarized direction. Each of the first piezoelectric body and the second piezoelectric body has a first polarized portion and a second polarized portion. The first polarized portion of the first piezoelectric body is aligned in the preselected direction with the second polarized portion of the second piezoelectric body. The second polarized portion of the first piezoelectric body is aligned in the preselected direction with the first polarized portion of the second piezoelectric body. A movable member is frictionally driven by a combination of a stretching vibration and a bending vibration generated by applying a driving signal to the first polarized portions of the first and second piezoelectric bodies or to the second polarized portions of the first and second piezoelectric bodies.

摘要翻译： 超声波马达具有沿给定方向偏振的振动体。 振动体包括第一压电体和第二压电体，该第一压电体和第二压电体沿大致平行于偏振方向的预选方向层叠到第一压电体上。 第一压电体和第二压电体各自具有第一偏振部和第二偏振部。 第一压电体的第一极化部分在预选方向上与第二压电体的第二极化部对准。 第一压电体的第二极化部分在预选方向上与第二压电体的第一极化部对准。 通过将驱动信号施加到第一和第二压电体的第一偏振部分或第一和第二压电体的第二偏振部分而产生的拉伸振动和弯曲振动的组合来摩擦地驱动可动部件。

公开(公告)号：US06359369B1

公开(公告)日：2002-03-19

申请号：US09535374

申请日：2000-03-24

申请人： Akihiro Iino ,  Kenji Suzuki ,  Masao Kasuga

发明人： Akihiro Iino ,  Kenji Suzuki ,  Masao Kasuga

IPC分类号： H02N200

CPC分类号： H02N2/004 ,  H02N2/0015 ,  H02N2/008 ,  H02N2/103

摘要： An ultrasonic motor is provided that is improved in reliability of a self-oscillator circuit constituted by the ultrasonic motor itself and high in efficiency. In a case of driving with one standing wave, the resonant point of a vibration mode used for driving is made lower than a resonant point of another vibration mode that is same in form as this vibration mode but different in node position. Furthermore, oscillation is caused between two resonant points. Where using two standing waves, oscillation is caused at a higher frequency than any of the two resonant points.

摘要翻译： 提供了一种超声波马达，其提高了由超声波马达本身构成的自振荡电路的可靠性并且效率高。 在使用一个驻波的情况下，将用于驱动的​​振动模式的谐振点设定为低于与该振动模式形式相同但节点位置不同的另一种振动模式的共振点。 此外，在两个谐振点之间产生振荡。 在使用两个驻波的情况下，以比两个谐振点中的任一个高的频率产生振荡。

公开(公告)号：US06211603B1

公开(公告)日：2001-04-03

申请号：US09082507

申请日：1998-05-21

申请人： Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki

发明人： Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki

IPC分类号： H02N204

CPC分类号： H02N2/004 ,  H02N2/0055 ,  H02N2/006 ,  H02N2/026 ,  H02N2/103

摘要： An ultrasonic motor has a vibrating member vibrationally driven for undergoing periodic vibration by the application of a high-frequency voltage. A moving body is frictionally driven by the periodic vibration of the vibrating member. A node supporting/pressurizing member supports a vibration node of the vibrating member and presses the vibrating member on the moving body.

摘要翻译： 超声波马达具有通过施加高频电压振动驱动以进行周期性振动的振动部件。 移动体由振动部件的周期性振动摩擦驱动。 节点支撑/加压构件支撑振动构件的振动节点并将振动构件按压在移动体上。

公开(公告)号：US6104124A

公开(公告)日：2000-08-15

申请号：US127098

申请日：1998-07-31

申请人： Kenji Suzuki ,  Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki ,  Takashi Yamanaka

发明人： Kenji Suzuki ,  Akihiro Iino ,  Masao Kasuga ,  Makoto Suzuki ,  Takashi Yamanaka

IPC分类号： G04C3/12 ,  H01L41/09 ,  H02N2/00 ,  H02N2/16 ,  H01L41/08

CPC分类号： H02N2/166

摘要： An ultrasonic motor has a piezoelectric element driven by application of a voltage thereto to undergo expansion and contraction. A vibrating body is vibrationally driven by the expansion and contraction movement of the piezoelectric element to thereby produce standing waves. A moving body is frictionally driven by the standing waves of the vibrating body. Power transmission projections apply a frictional force to the moving body to thereby frictionally drive the moving body in accordance with the standing waves. The power transmission projections are disposed only every preselected number of wavelengths at intermediate positions between loops and nodes of the standing waves, the preselected number being a natural number.

摘要翻译： 超声波马达具有通过施加电压而被驱动以进行膨胀和收缩的压电元件。 振动体由压电元件的膨胀和收缩运动振动驱动，从而产生驻波。 移动体被振动体的驻波摩擦地驱动。 动力传递突起对移动体施加摩擦力，从而根据驻波摩擦地驱动移动体。 功率传输突起仅在驻波的环路和节点之间的中间位置处布置每个预选数量的波长，预选数量是自然数。

公开(公告)号：US5494543A

公开(公告)日：1996-02-27

申请号：US049156

申请日：1993-04-19

申请人： Hiroshi Okano ,  Hironobu Ito ,  Masao Kasuga

发明人： Hiroshi Okano ,  Hironobu Ito ,  Masao Kasuga

IPC分类号： H02N2/00 ,  H01L41/09 ,  B44C1/22

CPC分类号： H01L41/0906 ,  H01L41/257 ,  H01L41/332

摘要： A vibrator for a piezoelectric motor is produced by forming an elastic material into a predetermined shape, forming a piezoelectric material on the shaped elastic material for polarization and for driving, forming an electrode for polarization on the piezoelectric material, forming an electrode for driving on the surface of the electrode for polarization or on the piezoelectric material after stripping the electrode for polarization, and etching the elastic material into a predetermined shape has an elastic body and to remove the elastic body from a base. Instead of forming the piezoelectric material on the shaped elastic material for polarization and for driving, an electrode both for polarization and for driving can be formed on one face of the shaped elastic material, and the piezoelectric material can be formed on that electrode.

摘要翻译： 通过将弹性材料形成为预定的形状，在成形的弹性材料上形成用于偏振和驱动的压电材料，在压电材料上形成用于极化的电极，形成用于驱动的​​电极 用于极化的电极的表面或剥离用于极化的电极的压电材料的表面，并且将弹性材料蚀刻成预定的形状具有弹性体并且从基体去除弹性体。 代替在用于偏振和驱动的成形弹性材料上形成压电材料，可以在成形弹性材料的一个面上形成用于偏振和驱动的电极，并且可以在该电极上形成压电材料。

公开(公告)号：US4542369A

公开(公告)日：1985-09-17

申请号：US522057

申请日：1983-08-10

申请人： Masao Kasuga

发明人： Masao Kasuga

IPC分类号： H03M1/00 ,  H03K13/02

CPC分类号： H03M1/124

摘要： A digital-to-analog converting device comprises a signal processing circuit supplied with a discrete digital signal x.sub.n at a time nT, where n is a natural number and T is a sampling period, for converting the discrete digital signal x.sub.n into a digital signal y.sub.n satisfying an equation ##EQU1## where N is a natural number greater than i, a digital-to-analog converter for converting the output digital signal y.sub.n of the signal processing circuit into an analog signal having a continuous amplitude, and an analog lowpass filter supplied with the output analog signal of the digital-to-analog converter, for eliminating frequency components substantially equal to or higher than 1/2 a sampling frequency F.sub.s of the discrete input digital signal of the signal processing circuit.

摘要翻译： 数模转换装置包括在时间nT处提供有离散数字信号xn的信号处理电路，其中n是自然数，T是采样周期，用于将离散数字信号xn转换成数字信号yn 满足其中N是大于i的自然数的等式，用于将信号处理电路的输出数字信号yn转换为具有连续幅度的模拟信号的数 - 模转换器和提供的模拟低通滤波器 与数/模转换器的输出模拟信号一起用于消除基本上等于或高于信号处理电路的离散输入数字信号的采样频率Fs的1/2的频率分量。

公开(公告)号：US4321685A

公开(公告)日：1982-03-23

申请号：US095554

申请日：1979-11-19

申请人： Masao Kasuga ,  Masaki Satoh ,  Takashi Matsushige

发明人： Masao Kasuga ,  Masaki Satoh ,  Takashi Matsushige

IPC分类号： H03H17/04 ,  G06F15/31

CPC分类号： H03H17/0461

摘要： A circuit arrangement of a digital filter comprises an A/D converter supplied with an input analog signal and producing as output a pulse-modulated digital signal, a digital filter for subjecting the digital signal from the A/D converter to a digital operation processing of finite word length, a D/A converter supplied with the resulting output digital signal of the digital filter and converting the same into an analog signal thereby to generate an output analog signal, an input detector for detecting the state wherein there is substantially no input analog signal and responsively producing as output a detection signal, an integrator for integrating the output of the D/A converter, a switching circuit for operating in response to the output detection signal of the input detector to pass the resulting output signal of the integrator, a reference voltage source, and an adder for adding the signal thus passed by the switching circuit and a reference voltage from the reference voltage source and feeding back and imparting the sum signal thus obtained to the A/D converter.

摘要翻译： 数字滤波器的电路装置包括一个A / D转换器，它被提供有一个输入的模拟信号，并产生一个脉冲调制的数字信号作为输出;一个数字滤波器，用于对来自A / D转换器的数字信号进行数字运算处理 有限字长，D / A转换器，其提供数字滤波器的所得输出数字信号，并将其转换成模拟信号，从而产生输出模拟信号;输入检测器，用于检测基本上没有输入模拟信号的状态 信号并且响应地产生检测信号的输出，用于对D / A转换器的输出进行积分的积分器，用于响应于输入检测器的输出检测信号进行操作的开关电路，以通过积分器的所得输出信号， 参考电压源和用于将由开关电路通过的信号与来自参考电压源的参考电压相加的加法器 e并反馈并将如此获得的和信号传递给A / D转换器。

公开(公告)号：US4188504A

公开(公告)日：1980-02-12

申请号：US899892

申请日：1978-04-25

申请人： Masao Kasuga ,  Nobuaki Takahashi ,  Masaaki Sato ,  Kohji Seki ,  Toshinori Mori ,  Makoto Iwahara

发明人： Masao Kasuga ,  Nobuaki Takahashi ,  Masaaki Sato ,  Kohji Seki ,  Toshinori Mori ,  Makoto Iwahara

IPC分类号： H04S1/00 ,  H04S5/00 ,  H04R5/04

CPC分类号： H04S5/00 ,  H04S7/30 ,  H04S2400/11

摘要： A binaural signal processing circuit comprising a first system for imparting an input signal with a transfer characteristic equal to the transfer characteristic hL(t; .theta., r) from a sound source to the left ear of a listener, where .theta. represents an angle between the front direction of the listener and the sound source, and r represents a distance between the sound source and the listener, a second system for imparting the input signal with a transfer characteristic equal to the transfer characteristic hR(t; .theta., r) from the sound source to the right ear of the listener, a system for variably controlling the transfer functions of the first and second transfer function imparting systems, and a further system for deriving binaural signals from the first and second transfer function imparting systems.

摘要翻译： 一种双耳信号处理电路，包括：第一系统，用于赋予输入信号具有等于从收听者的声源到左耳的传递特性hL（t; theta，r）的传递特性，其中θ表示 收听者的前方向和声源，r表示声源与收听者之间的距离，第二系统用于赋予输入信号具有等于来自该音源的传送特性hR（t; theta，r）的传递特性 声源到收听者的右耳，用于可变地控制第一和第二传递函数赋予系统的传递函数的系统，以及用于从第一和第二传递函数赋予系统导出双耳信号的另一系统。

公开(公告)号：US07005776B1

公开(公告)日：2006-02-28

申请号：US09290046

申请日：1999-04-12

申请人： Akihiro Iino ,  Masao Kasuga ,  Kenji Suzuki

发明人： Akihiro Iino ,  Masao Kasuga ,  Kenji Suzuki

IPC分类号： H01L41/08

CPC分类号： H02N2/0045 ,  H01L41/0913 ,  H02N2/0015 ,  H02N2/004 ,  H02N2/106 ,  H02N2/145 ,  H02N2/163 ,  H02N2/166

摘要： An ultrasonic motor comprises a piezoelectric vibrating member having a detecting polarized portion for detecting a drive signal having a drive frequency of the detecting polarized portion and a driving polarized portion for receiving the drive signal to oscillate the piezoelectric vibrating member in self-excited oscillation to produce a drive force. The detecting polarized portion is disposed at a portion of the piezoelectric vibrating member for undergoing maximum deformation in at least one vibration mode of oscillation of the piezoelectric vibrating member. An amplifying circuit amplifies the drive signal detected by the detecting polarized portion and inputs the amplified signal to the driving polarized portion to oscillate the piezoelectric vibrating member.

摘要翻译： 超声波马达包括具有检测极化部分的压电振动部件，用于检测具有检测极化部分的驱动频率的驱动信号和用于接收驱动信号的驱动极化部分，以使自激振荡中的压电振动部件振荡以产生 驱动力。 检测极化部分设置在压电振动部件的压电振动部件的至少一个振动模式中经历最大变形的部分。 放大电路对由检测极化部分检测出的驱动信号进行放大，并将放大的信号输入到驱动极化部分，使压电振动部件摆动。