-
公开(公告)号：US5644199A
公开(公告)日：1997-07-01
申请号：US503512
申请日：1995-07-18
申请人： Takashi Nojima , Masanori Sumihara , Tetsuro Otsuchi , Takahiro Nishikura , Osamu Kawasaki , Katsu Takeda , Katsumi Imada
发明人： Takashi Nojima , Masanori Sumihara , Tetsuro Otsuchi , Takahiro Nishikura , Osamu Kawasaki , Katsu Takeda , Katsumi Imada
摘要： The present invention relates to a method for driving an ultrasonic motor of the type which includes a vibrator for causing a flexural vibration wave in response to a pair of AC driving voltage signals, and a rotor in contact with the vibrator and moved by the flexural vibration wave. The rotational speed of the ultrasonic motor is controlled by using a feedback signal and a data table, the feedback signal indicating the current rotational speed of the ultrasonic motor, and the data table storing values of the feedback signal as a standard function of the rotational 21 speed. The method includes the step of sampling the feedback signal and detecting the rotational speed in a plurality of rotation states of the ultrasonic motor. The method obtains an approximate function representing the relationship between the sampled feedback signal and the detected rotational speed of the ultrasonic motor, and calculates correction coefficients for adjusting the approximate function to the standard function. The method then controls the rotational speed of the ultrasonic motor by using the feedback signal. In the controlling step, the method corrects the feedback signal obtained from the ultrasonic motor by using the correction coefficient, whereby a value of the approximate function is transformed into a corresponding value of the standard function.
摘要翻译： 本发明涉及一种用于驱动超声波电动机的方法，该超声波电动机包括响应于一对交流驱动电压信号而产生弯曲振动波的振动器，以及与振动器接触并通过弯曲振动移动的转子 波。 通过使用反馈信号和数据表，指示超声波马达的当前转速的反馈信号和将反馈信号的值作为旋转21的标准函数的数据表来控制超声波马达的转速 速度。 该方法包括对超声波马达的多个旋转状态中的反馈信号进行采样和检测转速的步骤。 该方法获得表示采样反馈信号与检测到的超声波马达的转速之间的关系的近似函数，并计算用于调整与标准函数近似函数的校正系数。 然后，该方法通过使用反馈信号来控制超声波马达的转速。 在控制步骤中，该方法通过使用校正系数校正从超声波马达获得的反馈信号，由此将近似函数的值转换为标准函数的对应值。
-
公开(公告)号：US6111338A
公开(公告)日：2000-08-29
申请号：US782742
申请日：1997-01-13
申请人： Tetsuro Otsuchi , Osamu Kawasaki , Hidenobu Shintaku , Shigeo Suzuki , Takahiro Nishikura , Katsumi Imada , Masanori Sumihara , Katsu Takeda , Takashi Nojima
发明人： Tetsuro Otsuchi , Osamu Kawasaki , Hidenobu Shintaku , Shigeo Suzuki , Takahiro Nishikura , Katsumi Imada , Masanori Sumihara , Katsu Takeda , Takashi Nojima
CPC分类号： H03H9/1028 , G01P15/0922 , H03H9/176
摘要： An acceleration sensor includes: a piezoelectric vibrator including a piezoelectric element having a first principal surface and a second principal surface opposed each other, a first and a second electrode formed on the first and the second principal surface, and conductive protrusions made of a metal material or a ceramic material and formed by a thermal spraying process; and a holding body for holding the piezoelectric vibrator via the conductive protrusions.
摘要翻译： 一种加速度传感器包括：压电振动器，包括具有彼此相对的第一主表面和第二主表面的压电元件，形成在第一和第二主表面上的第一和第二电极以及由金属材料制成的导电突起 或陶瓷材料，并通过热喷涂方法形成; 以及用于通过导电突起保持压电振动器的保持体。
-
公开(公告)号：US5438229A
公开(公告)日：1995-08-01
申请号：US194334
申请日：1994-02-08
申请人： Tetsuro Ohtsuchi , Masanori Sumihara , Osamu Kawasaki , Takahiro Nishikura , Katsu Takeda , Takashi Nojima , Katsumi Imada
发明人： Tetsuro Ohtsuchi , Masanori Sumihara , Osamu Kawasaki , Takahiro Nishikura , Katsu Takeda , Takashi Nojima , Katsumi Imada
摘要： An ultrasonic motor comprising vibrating body, piezoelectric body for exciting an elastic travelling wave in the vibrating body and moving body driven by the elastic travelling wave provides plural vibration amplitude detection electrodes for detecting an amplitude of vibration of the vibrating body these output signals from which are utilized to identify the magnitude of vibration amplitude of the vibrating body and the ultrasonic motor is controlled using the magnitude of vibration amplitude as a control index.
摘要翻译： 包括振动体的超声波马达，用于激发振动体中的弹性行波的压电体和由弹性行波驱动的移动体，提供多个振动振幅检测电极，用于检测振动体的振动振幅，这些振动体的这些输出信号 用于识别振动体的振幅的大小，并且使用振幅的大小作为控制指标来控制超声波马达。
-
公开(公告)号：US5408376A
公开(公告)日：1995-04-18
申请号：US130711
申请日：1993-10-04
申请人： Takahiro Nishikura , Katsumi Imada , Takashi Nojima , Katsu Takeda , Masanori Sumihara , Osamu Kawasaki
发明人： Takahiro Nishikura , Katsumi Imada , Takashi Nojima , Katsu Takeda , Masanori Sumihara , Osamu Kawasaki
CPC分类号： G11B5/592 , G11B5/4873 , H01L41/094 , H01L41/0946 , G11B5/5552
摘要： A bimorph element is formed by bonding first and second piezoelectric bodies together with an elastic shim interposed between. The bimorph element is firmly held by a base frame which has a recess and a groove at the bottom of the recess. The elastic shim 103 has an extending portion which is firmly inserted in the groove and its end portion is inserted in the recess of the base frame. A space between the recess and the end portion of the bimorph element is filled by an elastic support member.
摘要翻译： 通过将第一和第二压电体与夹在其间的弹性垫片结合在一起形成双晶体元件。 双压电晶片元件由底座牢固地保持，底座在凹槽的底部具有凹槽和凹槽。 弹性垫片103具有牢固地插入槽中的延伸部分，并且其端部插入到底架的凹部中。 凹部和双压电晶片元件的端部之间的空间由弹性支撑构件填充。
-
公开(公告)号：US5448129A
公开(公告)日：1995-09-05
申请号：US261245
申请日：1994-06-14
CPC分类号： H02N2/163 , H02N2/0065 , H02N2/007
摘要： An ultrasonic motor which achieves uniform contact between the vibrating body and the moving body and features high output transfer efficiency and high reliability, and by which the manufacturing process for the moving body thereof can be simplified and the moving body made lighter.By comprising the moving body of a carbon fiber reinforced resin composite material reinforced by at least carbon fiber, and constructing the moving body with a both-side supported or single-side supported beam construction, elasticity according to the pressure of the ultrasonic motor can be imparted in the direction of pressure of the moving body. Thus, the undulations in the contact surface of the vibrating body and the moving body can be absorbed and stable, uniform contact can be assured, and long-term maintenance of a stable friction condition can be achieved.
摘要翻译： 一种实现振动体与移动体均匀接触的超声波马达，具有输出转印效率高，可靠性高，可以简化移动体的制造工序，使移动体变轻。 通过将由至少碳纤维增强的碳纤维增强树脂复合材料的移动体构成，并且通过双侧支撑或单侧支撑梁结构构造移动体，根据超声波马达的压力可以具有弹性 在移动体的压力方向上施加。 因此，振动体和移动体的接触面的波动可以被吸收稳定，可以保证均匀的接触，并且可以实现稳定的摩擦条件的长期维持。
-
公开(公告)号：US5457351A
公开(公告)日：1995-10-10
申请号：US200002
申请日：1994-02-22
CPC分类号： H02N2/166
摘要： A position where the projection member is disposed is optimized by the product of a vibration displacement distribution of a vibration member composed of an elastic member for exciting the primary elastic progressive waves or more in the radial direction and the tertiary elastic progressive waves or more in the peripheral direction, and a generation force distribution of a vibration member to be caused in accordance with the pressure force so that the motor output is made larger. The construction is optional in accordance with the necessary characteristics, and the characteristics are superior by the shape of the supporting means of the vibrating member and the vibration member, thus providing an ultrasonic motor of higher stability.
摘要翻译： 通过由用于激发初级弹性渐进波的弹性部件或径向的弹性部件构成的振动部件的振动位移分布和三次弹性渐进波以上的三次弹性渐进波或更多的弹性部件的振动位移分布，使突出部件配置的位置最优化 圆周方向和根据压力引起的振动构件的产生力分布，使得电动机输出变大。 该结构根据必要的特性是可选的，其特征是通过振动部件和振动部件的支撑装置的形状优越，从而提供了具有更高稳定性的超声波马达。
-
公开(公告)号：US5300851A
公开(公告)日：1994-04-05
申请号：US969369
申请日：1992-10-30
CPC分类号： H02N2/026 , H02N2/0015
摘要： In a linear-type actuator where an elastic wave is excited upon the vibrator composed of a rod shaped elastic member and a piezo member so as to drive the moving member bought into pressure contact upon the vibrator, the present invention provides a linear-type actuator where the improvement of the driving efficiency and the simplification of the driving circuit can be achieved by the new driving principle.
摘要翻译： 在弹性波被由杆形弹性构件和压电构件组成的振动器激励以驱动在振动器上被压力接触的移动构件的线性致动器中，本发明提供一种线性致动器 其中驱动效率的提高和驱动电路的简化可以通过新的驱动原理来实现。
-
8.发明授权
公开(公告)号：US5327040A
公开(公告)日：1994-07-05
申请号：US862219
申请日：1992-04-02
CPC分类号： H02N2/163 , H02N2/0065 , H02N2/007
摘要： An ultrasonic motor achieves uniform contact between a vibrating body and a moving body and features high output transfer efficiency and high reliability. The manufacturing process for the moving body can be simplified and the moving body made lighter by making the moving body of a carbon fiber reinforced resin composite material reinforced by at least carbon fiber, and constructing the moving body with a both-side supported or single-side supported beam construction. Elasticity according to the pressure of the ultrasonic motor can be imparted in the direction of pressure of the moving body. Thus, the undulations in the contact surface of the vibrating body and the moving body can be absorbed, stable, uniform contact can be assured, and long-term maintenance of a stable friction condition can be achieved.
摘要翻译： 超声波马达实现振动体与移动体之间的均匀接触，具有高输出转移效率和高可靠性。 通过使由至少碳纤维增强的碳纤维增强树脂复合材料的移动体制成移动体，移动体的制造过程可以简化，移动体更轻，并且用双面支撑或单面构造移动体， 侧支撑梁结构。 根据超声波马达的压力的弹性可以在移动体的压力方向上赋予。 因此，可以吸收振动体和移动体的接触面的波动，可以确保稳定，均匀的接触，并且可以实现长期的稳定的摩擦条件的维持。
-
公开(公告)号：US5256928A
公开(公告)日：1993-10-26
申请号：US783192
申请日：1991-10-28
CPC分类号： H02N2/166 , H02N2/0065 , H02N2/163
摘要： An ultrasonic motor has a circular vibrator and a mover which is pressed into contact with the circular vibrator. A circular elastic member which constitutes the circular vibrator has a uniform thickness along a circumferential direction thereof, and has a plurality of recesses on a face of the circular elastic member opposing the mover. According to the above structure, uniform elastic travelling waves are generated in the circular elastic member of the vibrator, and a uniform contact is attained between the vibrator and the mover, and yet the development of cracks at bottoms of the recesses is prevented. A ring-like recess is provided on another elastic member which constitutes the mover.
摘要翻译： 超声波马达具有圆形振动器和与圆形振动器接触的动子。 构成圆形振动器的圆形弹性构件沿其圆周方向具有均匀的厚度，并且在圆形弹性构件的与移动体相对的表面上具有多个凹部。 根据上述结构，在振动器的圆形弹性构件中产生均匀的弹性行波，并且在振动器和移动体之间达到均匀的接触，并且防止了凹部底部的裂缝的发展。 构成动子的另一弹性构件上设有环状的凹部。
-
公开(公告)号：US5854528A
公开(公告)日：1998-12-29
申请号：US647724
申请日：1996-05-15
CPC分类号： H02N2/16 , H02N2/0085
摘要： An ultrasonic motor has a vibrating body 3 and a moving body 11 supported by a supporting component 7. A rounded lower end of the supporting component is supported in a tapered dent of a supporting base 10, and therefore when a side pressure is applied, it inclines to the supporting base so as to keep the contact between the vibrating body and moving body stable. As a result, a stable motor rotation is always obtained regardless of side pressure. A lead wire 8 is held between a metal elastic element 1 and supporting component, and is pressed against the elastic element. Hence, the lead wire, through contact with the elastic element, is electrically coupled to the common electrode on the upper surface of a piezoelectric element without soldering and without use of conductive resin.
摘要翻译： 超声波马达具有由支撑部件7支撑的振动体3和移动体11.支撑部件的圆形下端被支撑在支撑基座10的锥形凹部中，因此当施加侧压时 倾斜到支撑基座，以保持振动体和移动体之间的接触稳定。 结果，无论侧压如何，始终可以获得稳定的电机旋转。 引线8被保持在金属弹性元件1和支撑部件之间，并被压靠在弹性元件上。 因此，通过与弹性元件接触的引线在压电元件的上表面上电连接到公共电极，而不需要焊接而不使用导电树脂。
-
-
-
-
-
-
-
-
-
搜索结果
63 条记录 (耗时 0.041 秒)
