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公开(公告)号：US06528926B2
公开(公告)日：2003-03-04
申请号：US10001428
申请日：2001-10-30
申请人： Yasuhiro Okamoto , Ryuichi Yoshida , Akira Kosaka
发明人： Yasuhiro Okamoto , Ryuichi Yoshida , Akira Kosaka
IPC分类号： H02N204
CPC分类号： H02N2/025
摘要： A driving apparatus enjoying improved performance through the prevention of fluctuations in the driving characteristic, wherein a driven member, which is frictionally engaged with a driving member fixed to an electromechanical conversion element, is driven based on driving that is not symmetrical as to the timing of extension and contraction of the electromechanical conversion element, and wherein the electromechanical conversion element is elastically held by the housing.
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2.发明授权Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism 有权采用机电传感器的驱动机构及驱动机构的控制方法公开(公告)号：US06717329B2
公开(公告)日：2004-04-06
申请号：US10053186
申请日：2002-01-18
IPC分类号： H01L4106
摘要： An actuator using vibration caused by a piezoelectric element. The actuator includes: an driving rod bonded to one of the piezoelectric element; a engaging member for engaging frictionally with the driving rod; and a control circuit for applying the piezoelectric element with a driving voltage. The control circuit is provided with a drive circuit which generates a first set of the driving voltage for driving the engaging member, and with a friction reducing circuit which generates a second set of the driving voltage for reducing a frictional force exerting between the driving rod and the engaging member.
摘要翻译： 使用由压电元件引起的振动的致动器。 所述致动器包括：驱动杆，其接合到所述压电元件之一; 用于与驱动杆摩擦啮合的啮合件; 以及用于施加驱动电压的压电元件的控制电路。 控制电路设置有驱动电路，该驱动电路产生用于驱动接合构件的第一组驱动电压，并且具有产生第二组驱动电压的摩擦减小电路，用于减小在驱动杆和驱动杆之间施加的摩擦力 接合构件。
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公开(公告)号：US06331747B2
公开(公告)日：2001-12-18
申请号：US09784515
申请日：2001-02-15
申请人： Ryuichi Yoshida , Yasuhiro Okamoto
发明人： Ryuichi Yoshida , Yasuhiro Okamoto
IPC分类号： H01L4108
CPC分类号： H02N2/08
摘要： A surface acoustic wave motor with high energy efficiency, which may efficiently execute recovery of energy of surface acoustic waves propagated to the ends of piezoelectric substrate and re-excitation by the recovered energy, includes a comb-shaped electrode having interdigital structure for generating surface acoustic waves and two unindirectional comb-shaped electrodes having interdigital structure for recovering and re-exciting surface acoustic wave energy arranged on a piezoekextric substrate, and a slider disposed between the comb-shaped electrode for generating surface acoustic waves and the unindirectional comb-shaped electrodes for recovering and re-exciting surface acoustic wave energy. The surface acoustic wave generated by the comb-shaped electrode is recovered as electric power by unindirectional comb-shaped electrode arranged at one end of the piezoelectric substrate, and applied to the unindirectional comb-shaped electrode arranged at the other end thereof to re-excite the piezoelectric substrate.
摘要翻译： 具有能量效率高的表面声波电动机可以有效地执行传播到压电基板的端部的表面声波的能量的恢复，并且通过回收的能量重新激发，包括梳状电极，其具有用于产生表面声学的叉指结构 波形和两个具有叉指结构的非定向梳形电极，用于恢复和再激励布置在压电基底上的表面声波能量，以及设置在用于产生表面声波的梳状电极之间的滑块和用于产生表面声波的非定向梳形电极 恢复和重新激发表面声波能量。 由梳状电极产生的表面声波通过布置在压电基片的一端的非定向梳状电极作为电力被恢复，并施加到另一端布置的未定向梳状电极以重新激发 压电基板。
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公开(公告)号：US5847488A
公开(公告)日：1998-12-08
申请号：US796649
申请日：1997-03-04
申请人： Ryuichi Yoshida , Yasuhiro Okamoto
发明人： Ryuichi Yoshida , Yasuhiro Okamoto
IPC分类号： G01B15/00 , G01B15/08 , G01B21/30 , G01N37/00 , G01Q10/02 , G01Q30/10 , G01Q30/16 , G01Q60/00 , G01Q90/00 , H01L21/68 , H01L41/09 , H02N2/00 , H02N2/04 , H01L41/04
CPC分类号： H02N2/101 , H02N2/025 , Y10S977/872
摘要： An apparatus having a drive device using an electromechanical transducer capable of being used in an environment in vacuum, at high temperatures and shielded from outside, an environment where electromagnetic waves are shielded or the like, where a drive shaft and a slider block frictionally coupled thereto are arranged at the inside of a hermetically-sealed vessel, one end of a drive shaft is made to penetrate a wall face portion of the hermetically-sealed vessel and the drive shaft is coupled with a piezoelectric element arranged at the outside of the vessel, the wall face portion of the hermetically-sealed vessel where the drive shaft penetrates is made elastically deformable, a portion between the wall face portion and the drive shaft is shielded in airtight by an adhesive agent and elongation and contraction displacements having different velocities are caused at the piezoelectric element whereby the slider block frictionally coupled with the drive shaft and members fixed to the slider block at the inside of the hermetically-sealed vessel are moved in a predetermined direction.
摘要翻译： 一种具有使用机电换能器的驱动装置的装置，其能够在真空中，高温环境中使用并且屏蔽外部，电磁波被屏蔽等的环境，其中驱动轴和与其摩擦耦合的滑动块 被布置在密封容器的内部，使驱动轴的一端穿过密封容器的壁面部分，并且驱动轴与布置在容器外部的压电元件连接， 驱动轴穿过的密封容器的壁面部分可弹性变形，壁面部分和驱动轴之间的部分被粘合剂气密地屏蔽，并且引起具有不同速度的伸长和收缩位移， 压电元件，由此滑动块与驱动轴摩擦耦合并固定到s上的构件 在密封容器的内侧的夹持器块沿预定方向移动。
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公开(公告)号：US5786654A
公开(公告)日：1998-07-28
申请号：US657307
申请日：1996-06-03
摘要： A movable stage utilizing an electromechanical transducer. An actuator as a drive source thereof is composed of piezoelectric elements, drive member fixed thereto and a movable member friction-coupled with the drive member. When a drive pulse is applied to the piezoelectric element to cause it to show reciprocal displacements at different rates in the thickness direction, the movable member frictionally coupled with the drive member moves in the predetermined direction to move the movable table coupled with the movable member in the predetermined direction. The movable stage comprising the movable table moving in the two axes or three axes can be constituted by providing the actuator in the two axes or three axes crossing with each other.
摘要翻译： 利用机电换能器的可移动台。 作为其驱动源的致动器由压电元件，固定到其上的驱动构件和与驱动构件摩擦联接的可动构件组成。 当驱动脉冲被施加到压电元件以使其在厚度方向上以不同的速率显示往复位移时，与驱动构件摩擦联接的可动构件沿预定方向移动，以将与可动构件联接的活动台移动到 预定方向。 包括在两轴或三轴上移动的可移动台的可移动台可以通过在彼此交叉的两个轴或三个轴上提供致动器来构成。
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公开(公告)号：US06727635B2
公开(公告)日：2004-04-27
申请号：US09948699
申请日：2001-09-10
IPC分类号： H01L4108
摘要： A smooth impact drive mechanism utilizing an electromechanical conversion element, in which a preheating voltage to preheat the electromechanical conversion element is impressed thereto before the impression of a drive voltage to the electromechanical conversion element, in order to realize stable drive characteristics by reducing fluctuation in the speed of the moving unit. In addition, drive parameters are changed in accordance with the temperature of the electromechanical conversion element. Furthermore, drive parameters are changed in accordance with the moving speed of the moving unit.
摘要翻译： 一种利用机电转换元件的平滑冲击驱动机构，其中在机电转换元件的驱动电压的压印之前，将机电转换元件预热的预热电压施加到机电转换元件，以便通过减小机电转换元件的波动来实现稳定的驱动特性 移动单元的速度。 此外，驱动参数根据机电转换元件的温度而改变。 此外，驱动参数根据移动单元的移动速度而改变。
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公开(公告)号：US06512321B2
公开(公告)日：2003-01-28
申请号：US09789504
申请日：2001-02-22
IPC分类号： H01L4108
CPC分类号： H02N2/067 , G03B3/10 , G03B2205/0061 , H02N2/025
摘要： A driving apparatus includes an electromechanical conversion element that expands and contracts through the application of a drive voltage, the electromechanical conversion element includes a first end and a second end. The apparatus further includes a support member that is fixed to the first end of the electromechanical conversion element in a direction of expansion or contraction of the electromechanical conversion element; a drive member that is fixed to the second end of the electromechanical conversion element in the direction of expansion or contraction; an engaging member that engages with the drive member with a friction force; and a drive circuit that drives the electromechanical conversion element. The drive circuit generates a rectangular waveform drive voltage and applies the rectangular waveform drive voltage to the electromechanical conversion element to cause the electromechanical conversion element to expand and contract at different speeds to thereby move the support member and the engaging member relative to each other.
摘要翻译： 驱动装置包括通过施加驱动电压而膨胀和收缩的机电转换元件，该机电转换元件包括第一端和第二端。 该装置还包括支撑构件，其在机电转换元件的膨胀或收缩方向上固定到机电转换元件的第一端; 驱动构件，其在膨胀或收缩的方向上固定到所述机电转换元件的第二端; 与摩擦力与驱动构件接合的接合构件; 以及驱动所述机电转换元件的驱动电路。 驱动电路产生矩形波形驱动电压并将矩形波形驱动电压施加到机电转换元件，以使机电转换元件以不同的速度膨胀和收缩，从而相对于彼此移动支撑构件和接合构件。
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公开(公告)号：US06188161B1
公开(公告)日：2001-02-13
申请号：US09088636
申请日：1998-06-02
申请人： Ryuichi Yoshida , Yasuhiro Okamoto
发明人： Ryuichi Yoshida , Yasuhiro Okamoto
IPC分类号： H01L4108
摘要： A driving apparatus includes an electromechanical transducer that is connected to a drive pulse generating means and that expands and contracts, a driven member that is connected to one end of the transducer, a friction member that is connected to the other end of the transducer and a guide unit that is in frictional contact with the friction member. The friction member has an elastic deforming mechanism that elastically presses against and comes into frictional contact with the guide unit, and the elastic deforming mechanism is constructed such that its elastic deformation stress vector perpendicularly crosses the directions of expansion and contraction of the transducer.
摘要翻译： 一种驱动装置，包括连接到驱动脉冲产生装置的机电换能器，并且其连接到换能器的一端的被驱动部件膨胀和收缩;连接到换能器的另一端的摩擦件， 与摩擦构件摩擦接触的导向单元。 摩擦构件具有弹性变形机构，弹性变形机构弹性地按压并与引导单元摩擦接触，并且弹性变形机构被构造成使得其弹性变形应力矢量垂直于穿过换能器的膨胀和收缩方向。
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9.发明授权
公开(公告)号：US6147434A
公开(公告)日：2000-11-14
申请号：US59147
申请日：1998-04-13
摘要： A drive device using a piezoelectric transducer for correcting a shift of a position of a drive system based on a change in an environmental state such as environmental temperature, in which a drive member coupled to the piezoelectric transducer is driven by causing displacements having different speeds by applying drive pulses of saw tooth waves to the piezoelectric transducer thereby moving a slider block frictionally coupled to the drive member, an amount of a shift of a position of the slider block based on the change in the environmental temperature is previously stored to a memory, when a change in temperature is detected by a temperature sensor, the amount of the shift of the position of the slider block is calculated in accordance with the change in temperature and the shift of the position of the slider block is corrected by driving the piezoelectric transducer in a direction of correcting the shift amount by driving a fine adjustment circuit.
摘要翻译： 一种使用压电传感器的驱动装置，其基于环境温度的变化来校正驱动系统的位置的偏移，其中通过使具有不同速度的位移由与压电换能器连接的驱动构件 将锯齿波的驱动脉冲施加到压电换能器，从而移动摩擦联接到驱动构件的滑动块，基于环境温度的变化将滑动块的位置的偏移量预先存储到存储器中， 当通过温度传感器检测到温度变化时，根据温度的变化来计算滑块的位置的偏移量，并且通过驱动压电换能器来校正滑动块的位置的移动 在通过驱动微调电路来校正移动量的方向上。
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10.发明授权Drive device using electromechanical transducer and an apparatus employing the drive device 失效使用机电换能器的驱动装置和采用驱动装置的装置
公开(公告)号：US5969464A
公开(公告)日：1999-10-19
申请号：US840825
申请日：1997-04-16
摘要： A drive device which repeats charging and discharging at different velocities by applying drive pulses to a piezoelectric transducer, causes vibrations with different velocities in the piezoelectric transducer to cause contraction and expansion displacements in a driving member fixedly coupled with the piezoelectric transducer for moving a member frictionally coupled to the driving member. In order to provide stable driving force, stable driving velocity and precise movement, a piezoelectric transducer constituted by stacking a plurality of unit elements is divided into a plurality of blocks having different numbers of lamination layers for driving. A change in impedance by the division is compensated by a compensation circuit, or a plurality of driving circuits corresponding to the impedance are provided and a block and a driving circuit of the piezoelectric transducer are selected in accordance with the driving velocity and moving distance for driving.
摘要翻译： 通过向压电换能器施加驱动脉冲来重复不同速度的充电和放电的驱动装置在压电换能器中引起不同速度的振动，从而在与压电换能器固定耦合的驱动构件中引起收缩和膨胀位移，以摩擦地移动构件 耦合到驱动构件。 为了提供稳定的驱动力，稳定的驱动速度和精确的运动，将由多个单元组成的压电换能器分成多个具有不同层压层的驱动块。 通过补偿电路来补偿由除法产生的阻抗的变化，或者提供与阻抗相对应的多个驱动电路，并根据驱动速度和驱动移动距离来选择压电换能器的块和驱动电路 。
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