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1. 发明授权

US06717329B2 Drive mechanism employing electromechanical transducer and method for controlling the drive mechanism 有权
标题翻译：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
申请人： Ryuichi Yoshida , Junichi Tanii , Yasuhiro Okamoto , Tomoyuki Yuasa
发明人： Ryuichi Yoshida , Junichi Tanii , Yasuhiro Okamoto , Tomoyuki Yuasa
IPC分类号： H01L4106
CPC分类号： H02N2/067 , H02N2/025
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。

2. 发明授权

US06815871B2 Drive mechanism and drive method employing circuit for generating saw-tooth waveform voltage 有权
标题翻译：驱动机构和驱动方法采用电路产生锯齿波形电压
公开(公告)号：US06815871B2
公开(公告)日：2004-11-09
申请号：US10266706
申请日：2002-10-09
申请人： Tomoyuki Yuasa , Ryuichi Yoshida
发明人： Tomoyuki Yuasa , Ryuichi Yoshida
IPC分类号： H01L4108
CPC分类号： H02N2/067 , H02N2/025
摘要： An actuator using a piezoelectric element. The actuator includes: the piezoelectric element, which is capacitive; an inductor; and a resistor. The piezoelectric element, the inductor and the resistor are serially arranged so as to define a serial circuit. When a suitable voltage is supplied to the serial circuit, a saw-tooth waveform voltage is applied to the piezoelectric element so that the piezoelectric element extends at a speed and compresses at a different speed repeatedly.
摘要翻译：使用压电元件的致动器。致动器包括：电容性的压电元件; 电感; 和电阻。压电元件，电感器和电阻器被串联布置以便限定串联电路。当将合适的电压提供给串联电路时，锯齿波形电压被施加到压电元件，使得压电元件以一定速度延伸并以不同的速度重复地压缩。

3. 发明授权

US08487510B2 Driving device 失效
标题翻译：驱动装置
公开(公告)号：US08487510B2
公开(公告)日：2013-07-16
申请号：US12996869
申请日：2009-05-26
申请人： Ryuichi Yoshida , Takayuki Hoshino , Tomoyuki Yuasa
发明人： Ryuichi Yoshida , Takayuki Hoshino , Tomoyuki Yuasa
IPC分类号： H01L41/06 , H02N2/06
CPC分类号： H02N2/065 , H02N2/002 , H02N2/062
摘要： Provided is a driving device having an electromechanical transducer, a driving member, a moving member and a driving circuit. The driving circuit outputs a driving voltage at a frequency lower than that where the driving speed of the moving member is at maximum, and changes the drive frequency of the driving voltage so that the drive frequency has a negative correlative relationship with the ambient temperature. The change rate of the drive frequency to a change of the ambient temperature in the negative correlative relationship is larger than a change rate of a frequency where the driving speed of the moving member is at maximum to an increase of the ambient temperature, and the change rate permits the driving speed of the moving member to increase when the ambient temperature increases.
摘要翻译：提供了一种具有机电换能器，驱动构件，移动构件和驱动电路的驱动装置。驱动电路输出的频率低于移动部件的驱动速度最大的驱动电压，并且改变驱动电压的驱动频率，使得驱动频率与环境温度具有负相关关系。驱动频率与负相关关系中的环境温度变化的变化率大于移动部件的驱动速度达到环境温度上升的频率的变化率，并且变化速率允许当环境温度升高时移动构件的驱动速度增加。

4. 发明授权

US06803699B2 Drive mechanism employing electromechanical transducer and drive method therefor 有权
标题翻译：采用机电换能器的驱动机构及其驱动方法
公开(公告)号：US06803699B2
公开(公告)日：2004-10-12
申请号：US10298931
申请日：2002-11-19
申请人： Tomoyuki Yuasa , Ryuichi Yoshida
发明人： Tomoyuki Yuasa , Ryuichi Yoshida
IPC分类号： H02N200
CPC分类号： H02N2/067 , H02N2/025
摘要： An actuator using a piezoelectric element and an operating method thereof. The actuator includes: the piezoelectric element; a drive rod fixed to the piezoelectric element; a moving unit engaging with the drive rod by a frictional force; and a driver for applying a voltage to the piezoelectric element. The voltage repeats a cycle of a first value which is one of a maximum value and a minimum value, a second value which is intermediate between the maximum value and the minimum value, and a third value which is the other of the maximum value and the minimum value so as to drive the driving unit with respect to the drive rod.
摘要翻译：使用压电元件的致动器及其操作方法。致动器包括：压电元件; 固定在压电元件上的驱动杆; 通过摩擦力与驱动杆接合的移动单元; 以及用于向压电元件施加电压的驱动器。电压重复第一值的周期，该第一值是最大值和最小值之一，第二值在最大值和最小值之间，第三值是最大值和第二值之间的值以驱动驱动单元相对于驱动杆的最小值。

5. 发明申请

US20110080121A1 DRIVING DEVICE 失效
标题翻译：驱动装置
公开(公告)号：US20110080121A1
公开(公告)日：2011-04-07
申请号：US12996869
申请日：2009-05-26
申请人： Ryuichi Yoshida , Takayuki Hoshino , Tomoyuki Yuasa
发明人： Ryuichi Yoshida , Takayuki Hoshino , Tomoyuki Yuasa
IPC分类号： H02N2/06
CPC分类号： H02N2/065 , H02N2/002 , H02N2/062
摘要： Provided is a driving device having an electromechanical transducer, a driving member, a moving member and a driving circuit. The driving circuit outputs a driving voltage at a frequency lower than that where the driving speed of the moving member is at maximum, and changes the drive frequency of the driving voltage so that the drive frequency has a negative correlative relationship with the ambient ten aperature. The change rate of the drive frequency to a change of the ambient temperature in the negative correlative relationship is larger than a change rate of a frequency where the driving speed of the moving member is at maximum to an increase of the ambient temperature, and the change rate permits the driving speed of the moving member to increase when the ambient temperature increases.
摘要翻译：提供了一种具有机电换能器，驱动构件，移动构件和驱动电路的驱动装置。驱动电路输出低于移动部件的驱动速度最大的驱动电压，驱动电压的驱动频率变化使得驱动频率与环境温度具有负相关关系。驱动频率与负相关关系中的环境温度变化的变化率大于移动部件的驱动速度达到环境温度上升的频率的变化率，并且变化速率允许当环境温度升高时移动构件的驱动速度增加。

6. 发明授权

US06528926B2 Driving apparatus 有权
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.

7. 发明授权

US6114799A Driving mechanism 失效
标题翻译：驱动机制
公开(公告)号：US6114799A
公开(公告)日：2000-09-05
申请号：US20944
申请日：1998-02-09
申请人： Ryuichi Yoshida , Yasuhiro Okamoto
发明人： Ryuichi Yoshida , Yasuhiro Okamoto
IPC分类号： H01L41/09 , H02N2/00
CPC分类号： B82Y15/00 , H02N2/025
摘要： A driving device with a long stroke and high speed driving ability. The device includes a base with a pair of parallel guides which are elastically installed thereon, and includes a drive unit in which there are arranged in series a driving member frictionally engaging the guides, a piezoelectric element for actuating the driving member in a direction in which the piezoelectric element expands and contracts, and a movable member, with a mass larger than the driving member, on which the driving member and the piezoelectric element are installed movably in the direction. When the piezoelectric element expands slowly with a pulse voltage applied thereto, the movable member moves with the driving member remaining stationary, relative to the guide. When the piezoelectric element contracts rapidly, the driving member slides relative to the guide with the movable member remaining stationary relative thereto. Thus, the drive unit is driven and moved along the guide.
摘要翻译：具有长行程和高速驾驶能力的驾驶装置。该装置包括一对具有弹性地安装在其上的平行引导件的底座，并且包括驱动单元，其中与导向件摩擦接合的驱动构件串联设置;驱动构件，用于沿着压电元件膨胀和收缩，具有大于驱动构件的质量的可移动构件，驱动构件和压电元件在该方向上可移动地安装在驱动构件上。当压电元件以施加脉冲电压的方式缓慢地膨胀时，可移动部件相对于引导件保持静止而移动。当压电元件快速收缩时，驱动构件相对于导向件滑动，其中可动构件相对于其保持静止。因此，驱动单元被驱动并沿着引导件移动。

8. 发明授权

US06727635B2 Driving device 有权
标题翻译：驱动装置
公开(公告)号：US06727635B2
公开(公告)日：2004-04-27
申请号：US09948699
申请日：2001-09-10
申请人： Yasuhiro Okamoto , Ryuichi Yoshida , Haruyuki Nakano
发明人： Yasuhiro Okamoto , Ryuichi Yoshida , Haruyuki Nakano
IPC分类号： H01L4108
CPC分类号： H02N2/067 , H02N2/025
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。

9. 发明授权

US06512321B2 Driving apparatus and method of using same 有权
标题翻译：驱动装置及其使用方法
公开(公告)号：US06512321B2
公开(公告)日：2003-01-28
申请号：US09789504
申请日：2001-02-22
申请人： Ryuichi Yoshida , Yasuhiro Okamoto , Hiroyuki Okada
发明人： Ryuichi Yoshida , Yasuhiro Okamoto , Hiroyuki Okada
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。

10. 发明授权

US06188161B1 Driving apparatus using transducer 失效
标题翻译：使用传感器的驱动装置
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
CPC分类号： B82Y15/00 , H02N2/025
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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