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公开(公告)号：US09871471B2
公开(公告)日：2018-01-16
申请号：US14678837
申请日：2015-04-03
发明人： Akira Uebayashi , Toshihiro Ifuku , Tatsuo Furuta , Shinya Koyama
IPC分类号： H01L41/09 , H01L41/113 , H01L41/107 , H02N2/14 , H02N2/16 , G02B7/04 , H01L41/187
CPC分类号： H02N2/142 , G02B7/04 , H01L41/1871 , H02N2/163
摘要： An oscillatory wave drive device has an oscillatory wave driving unit having an electromechanical energy conversion element having drive phases and a detection phase, a diaphragm, and a rotor, in which a traveling wave is generated on the surface of the diaphragm of the electromechanical energy conversion element to drive the rotor, and the driving speed of the rotor is controlled based on a signal of the phase difference detecting unit. In the oscillatory wave drive device, a detection phase voltage step-down unit and a drive phase voltage step-down unit each containing a resistance voltage dividing circuit having at least two resistors are provided and the voltage dividing ratio in the resistance voltage dividing circuit of the detection phase voltage step-down unit is lower than 1/1 and higher than 1/20.
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公开(公告)号：US09853577B2
公开(公告)日：2017-12-26
申请号：US14465385
申请日：2014-08-21
申请人： Yijun Huan
发明人： Min Huan , Zhendong Tang , Yuanxing Tang , Honglin Lu , Tong Lu
摘要： Provided is a multi-flap standing wave type ultrasonic motor, including a rotor part, a stator part, a control circuit board, and a fixing attachment. The rotor part includes a flange, a rotor ring, and a shaft. The shaft and the flange are joined together by using a first screw and the flange and the rotor ring are joined together by using a second screw. The stator part includes a piezoelectric ceramics, an excitation ring, and flaps. The piezoelectric ceramics and the excitation ring are fixed with glue, the flaps and the excitation ring are connected through welding, and form an angle with the radial direction of the excitation ring. The stator part is sleeved on a support, is attached to a pressure plate and is connected, through an upright, to a locking plate, and to a substrate of the control circuit board to form a fixing attachment. The flaps are an elastomer and a preload provider. The inner diameter of the rotor ring is less than the outer diameter of the flaps. Adopted is a circular-distributed flap structure, an outer rotor design, an integrated design of motor and control, and a sensor, thereby simplifying the system structure. By adopting circular-distributed assembled flaps, the processing difficulty of the flaps is reduced.
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公开(公告)号：US20170229981A1
公开(公告)日：2017-08-10
申请号：US15428654
申请日：2017-02-09
发明人： David A. Henderson
CPC分类号： F01L1/22 , H02N2/0025 , H02N2/0095 , H02N2/101
摘要： A lead screw actuator device includes a base configured to support a plurality of actuators. A first bridge is supported by one of the plurality of actuators and a second bridge is supported by another one of the plurality of actuators. A nut is supported by the first bridge and the second bridge and is rotatably coupled to a screw with a sliding contact friction between the screw and the nut. The plurality of actuators generate small movements of the first bridge, the second bridge, and the nut that produce relative rotation between the nut and the screw. A method of making a lead screw actuator device is also disclosed.
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24.发明授权公开(公告)号：US09680084B2
公开(公告)日：2017-06-13
申请号：US14246842
申请日：2014-04-07
发明人： Joo Yul Ko , Jung Wook Seo , Ho kwon Yoon , Hong Yeon Cho , Boum Seock Kim , Kang Heon Hur
IPC分类号： H01L41/04 , H01L41/083 , H02N2/14
CPC分类号： H01L41/083 , B06B2201/55 , H01L41/042 , H02N2/14
摘要： A piezoelectric element driving apparatus may apply a predetermined driving signal to a piezoelectric element to drive the piezoelectric element. The driving signal may be an asymmetrical waveform in which amplitudes of first and second polarities thereof are different from each other. An exemplary embodiment in the present disclosure may provide a piezoelectric element driving apparatus and method having a high output while protecting dielectric characteristics of a piezoelectric element by driving the piezoelectric element using an asymmetrical driving signal.
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公开(公告)号：US09513620B2
公开(公告)日：2016-12-06
申请号：US14225199
申请日：2014-03-25
IPC分类号： G05D23/275 , G05B19/404 , H02N2/14
CPC分类号： G05B19/404 , H02N2/142
摘要： A method of controlling an ultrasonic motor coupled to a motor driver circuit, comprises receiving a temperature signal representing the temperature of the ultrasonic motor, receiving a position signal output by a first encoder representing the position of the ultrasonic motor, calculating an error between the position of the ultrasonic motor represented by the position signal and a target position, calculating a control signal based on the temperature of the ultrasonic motor represented by the temperature signal and the calculated error, and sending the control signal to the motor driver circuit to control the ultrasonic motor.
摘要翻译： 一种控制耦合到电动机驱动电路的超声波电动机的方法，包括：接收表示超声波电动机的温度的温度信号，接收由表示超声波电动机的位置的第一编码器输出的位置信号，计算位置 由位置信号表示的超声波马达和目标位置，基于由温度信号表示的超声波马达的温度和计算出的误差来计算控制信号，并将控制信号发送到马达驱动电路以控制超声波 发动机。
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26.发明申请VIBRATION TYPE ACTUATOR APPARATUS INCREASED IN POSITION DETECTION ACCURACY, CONTROLLER, AND MEDICAL SYSTEM 审中-公开振动式执行器装置位置检测精度，控制器和医疗系统增加公开(公告)号：US20160329837A1
公开(公告)日：2016-11-10
申请号：US15142148
申请日：2016-04-29
发明人： Kenichi Kataoka
CPC分类号： H02N2/142 , A61B5/0051 , A61B5/0263 , A61B5/055 , A61H23/02 , A61H2201/1659 , A61H2201/5007 , A61H2201/5061 , A61H2201/5064 , A61H2201/5069 , A61H2201/5092 , G05B1/01 , H02N2/106 , H02N2/163
摘要： A controller capable of improving position detection accuracy during the stopping of an actuator, and controlling the actuator with high stability and quick responsiveness during driving. A first position signal corresponding to an amount of relative movement between the actuator and said driven element is output to a filter, and the filter outputs a second position signal generated by attenuating signal components having frequencies except a specific frequency band. Driving and stopping of the actuator are controlled according to the second position signal. As the specific frequency band, a first frequency band is set in said filter during the driving of the actuator, and a second frequency band is set in said filter during the stopping of the actuator. The first frequency band and the second frequency band both include 0 Hz, and the second frequency band is narrower than the first frequency band.
摘要翻译： 一种能够在致动器停止期间提高位置检测精度并且在驾驶期间以高稳定性和快速响应性来控制致动器的控制器。 对应于致动器和所述从动元件之间的相对移动量的第一位置信号被输出到滤波器，并且滤波器输出通过衰减具有除了特定频带之外的频率的信号分量产生的第二位置信号。 根据第二位置信号来控制致动器的驱动和停止。 作为特定频带，在致动器的驱动期间，在所述滤波器中设置第一频带，并且在致动器停止期间在所述滤波器中设定第二频带。 第一频带和第二频带均包括0Hz，第二频带窄于第一频带。
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27.发明授权Apparatus and method for generating sinusoidal waves, and system for driving piezo actuator using the same 有权用于产生正弦波的装置和方法，以及用于驱动使用其的压电致动器的系统公开(公告)号：US09312467B2
公开(公告)日：2016-04-12
申请号：US14199727
申请日：2014-03-06
发明人： Gyu Won Kim
CPC分类号： H01L41/042 , B06B2201/55 , G06F1/0321 , H02N2/14 , H03M1/1245 , H03M1/66
摘要： An apparatus for generating sinusoidal waves may include: a look-up table storage unit storing a look-up table including a plurality of sampling points determined based on a base frequency and a sampling frequency; a sinusoidal wave generating unit calculating an integer ratio of a target frequency to the base frequency and obtaining sampling points from the look-up table by reflecting the integer ratio so as to generate a sinusoidal wave; and a correction control unit calculating noise information in the generated sinusoidal wave, and controlling the sinusoidal wave generating unit to correct the sampling frequency if the noise information fails to meet a predetermined requirement.
摘要翻译： 用于产生正弦波的装置可以包括：查找表存储单元，其存储包括基于基准频率和采样频率确定的多个采样点的查找表; 正弦波产生单元，计算目标频率与基本频率的整数比，并且通过反映整数比率从查找表获得采样点，以产生正弦波; 以及校正控制单元，计算所生成的正弦波中的噪声信息，并且如果噪声信息不能满足预定的要求，则控制正弦波产生单元校正采样频率。
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公开(公告)号：US20160020710A1
公开(公告)日：2016-01-21
申请号：US14800988
申请日：2015-07-16
发明人： Yuki ODA , Masanori Takahashi , Makoto Shihoh , Daisuke Yokoyama
CPC分类号： G02B7/04 , H02N2/0055 , H02N2/026
摘要： A vibration-type actuator that enables to miniaturize and stabilize pressure state between a driven body and a vibration body. A pressurizing unit applies pressure force between projections on the vibration body and the driven body. A piezoelectric device connected to the vibration body on a surface opposite to the projections moves the driven body by occurring vibration in the vibration body when drive voltage is applied. The pressurizing unit includes an energizing member, its support member, and a transfer member. A length of a contact area between the projections and the driven body is shorter than a length of an area in which the transfer member transfers the pressure force from the energizing member to the vibration body and a length of a contact area between the energizing member and the support member, in a direction perpendicular to the moving direction and to a pressurizing direction by the pressurizing unit.
摘要翻译： 一种振动型致动器，其能够使被驱动体和振动体之间的压力状态小型化和稳定化。 加压单元在振动体和被驱动体之间的突起之间施加压力。 在与突起相反的表面上连接到振动体的压电装置在施加驱动电压时通过振动体中的振动而发生振动。 加压单元包括通电构件，其支撑构件和转移构件。 突起与被驱动体之间的接触区域的长度比传递部件将来自激励部件的压力传递到振动体的区域的长度短，并且能量部件与被驱动体的接触面积的长度 所述支撑构件在垂直于所述移动方向的方向和所述加压单元的加压方向上。
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29.发明申请PIEZOELECTRIC ELEMENT, STATOR FOR OSCILLATORY WAVE MOTOR, OSCILLATORY WAVE MOTOR, DRIVING CONTROL SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MAKING STATOR FOR OSCILLATORY WAVE MOTOR 有权压电元件，振荡波电机的定子，振荡波电机，驱动控制系统，光学装置和制造振荡波电机定子的方法公开(公告)号：US20150349666A1
公开(公告)日：2015-12-03
申请号：US14655036
申请日：2013-12-19
发明人： Toshihiro IFUKU , Tatsuo FURUTA , Hiroshi SAITO , Makoto KUBOTA , Satoshi FUJITA
IPC分类号： H02N2/16 , H01L41/257 , H02N2/14 , H01L41/29 , H01L41/047 , H01L41/187
CPC分类号： H01L41/257 , H01L41/047 , H01L41/1871 , H01L41/29 , H02N2/14 , H02N2/163 , Y10T29/43
摘要： The present invention provides a piezoelectric element that includes a piezoelectric material having first and second surfaces; a common electrode disposed on the first surface; and a plurality of drive phase electrodes, a detection phase electrode, and a non-drive phase electrode disposed on the second surface, the piezoelectric material being sandwiched between the common electrode and the electrodes on the second surface. An absolute value d(1) of a piezoelectric constant of the piezoelectric material (1) in portions sandwiched between the drive phase electrodes and the common electrode, an absolute value d(2) of a piezoelectric constant of the piezoelectric material (2) in a portion sandwiched between the detection phase electrode and the common electrode, and an absolute value d(3) of the piezoelectric material (3) in a portion sandwiched between the non-drive phase electrode and the common electrode satisfy d(2)
摘要翻译： 本发明提供一种压电元件，其包括具有第一表面和第二表面的压电材料; 设置在所述第一表面上的公共电极; 以及多个驱动相电极，检测相电极和设置在第二表面上的非驱动相电极，压电材料夹在公共电极和第二表面上的电极之间。 在驱动相电极和公共电极之间的部分中压电材料（1）的压电常数的绝对值d（1），压电材料（2）的压电常数的绝对值d（2） 夹在非驱动相电极和公共电极之间的部分中的压电材料（3）的绝对值d（3）满足d（2）<0.95 d（1），d（3）<0.95d（1）和0.9＆nlE; d（3）/ d（2）＆nlE;
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公开(公告)号：US20150229240A1
公开(公告)日：2015-08-13
申请号：US14419373
申请日：2014-05-14
摘要： An ultrasonic motor having an ultrasound actuator in the form of a piezoelectric hollow cylinder with friction elements on at least one of its end surfaces, and having a rotor in effective contact with the friction elements and an electric excitation device. The actuator is subdivided in the circumferential direction in an even number of sectors Sa and Sb with the sectors Sa and Sb alternating and being adjacent in circumferential direction, and the friction elements being arranged in the range of adjacency of neighboring sectors. Each of the sectors Sa and Sb is formed by exciter electrodes and general electrodes alternatingly arranged in the axial direction of the hollow cylinder, wherein a layer of piezoelectric material is arranged between neighboring excitation electrodes and general electrodes.
摘要翻译： 一种超声波马达，其具有压电中空圆筒形式的超声致动器，所述超声波致动器在其至少一个端面上具有摩擦元件，并且具有与所述摩擦元件有效接触的转子和电激励装置。 致动器在圆周方向上以扇区Sa和Sb的偶数个扇区Sa和Sb细分，周向交替并相邻，并且摩擦元件布置在相邻扇区的相邻范围内。 每个扇区Sa和Sb由激励器电极和在中空圆柱体的轴向上交替布置的一般电极形成，其中压电材料层布置在相邻的激励电极和一般电极之间。
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