Input Circuit For Mechanical Output From Piezoelectric Element Patents (Class 310/317)
  • Patent number: 11125248
    Abstract: Fan performance can be adjusted based on real-time operating conditions. The fan can include a plurality of blades operatively connected to a rotor. The blades can extend radially outward from the rotor to a tip. A housing can substantially surround the fan. The housing can have an inner peripheral surface that defines an inner diameter. The inner peripheral surface can include a first portion and a second portion downstream of the first portion. The first portion can be adjacently upstream of the plurality of blades, and the second portion can be substantially aligned with the plurality of blades. A plurality of actuators being distributed in a circumferential direction of the housing. The actuators can be operatively positioned to cause the inner diameter of the first portion or the second portion to be altered. As a result, one or more performance characteristics of the fan can be changed.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: September 21, 2021
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Shailesh N. Joshi, Ercan Mehmet Dede, Umesh N. Gandhi
  • Patent number: 11117166
    Abstract: A system and downhole tool comprising an ultrasonic transducer with a piezoelectric material embedded in a backing and a method of determining a parameter using the ultrasonic transducer. A self-noise of the transducer can be reduced by the piezoelectric material being at least partially embedded in the backing. The ultrasonic transducer can include an encapsulating material that encapsulates the backing.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: September 14, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jing Jin, Yao Ge, Batakrishna Mandal
  • Patent number: 11114954
    Abstract: An ultrasonic motor and method are disclosed with an element to be driven and a plate-shaped ultrasonic actuator made of polarized electromechanical material with at least two friction elements arranged on one of its side. The ultrasonic actuator can include at least two generators for acoustic standing waves and each of the generators can include two cooperating and spaced sub-generators, and one respective sub-generator of a generator is located between the sub-generators of an adjacent generator, and the sub-generators of one generator are arranged in mirror image to the sub-generators of an adjacent generator. A polarization direction of the electromechanical material of one of the two sub-generators of one generator differs from the polarization direction of the electromechanical material of the other sub-generator of the same generator.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: September 7, 2021
    Assignee: PHYSIK INSTRUMENTE (PI) GMBH & CO. KG
    Inventors: Wladimir Wischnewskiy, Alexej Wischnewski
  • Patent number: 11108341
    Abstract: At least one of a first beam portion and second beam portions is provided with an out-of-plane vibration suppressing structure configured to suppress vibration of a movable portion in an out-of-plane direction vertical to an in-plane direction. Thus, unintentional occurrence of unintentional movement in the out-of-plane direction vertical to the in-plane direction can be suppressed. Furthermore, in this case, a size reduction of a device can be achieved in comparison with a case where a device includes a motor disposed for rotation driving, for example.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 31, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Makiko Hino, Yasushi Mizoguchi
  • Patent number: 11098705
    Abstract: A piezoelectric element drive circuit includes a piezoelectric element driven at a predetermined frequency and having a resonant frequency of (2n+1) times the predetermined frequency (n is a predetermined natural number), and a drive voltage generator that has a first output terminal connected to a first terminal of the piezoelectric element and a second output terminal connected to a second terminal of the piezoelectric element. When the piezoelectric element is driven, a waveform of potential difference between the first output terminal and the second output terminal is a step wave which transitions while taking an intermediate potential. A time length for which the potential difference is the intermediate potential is around (t2?t1)/(2n+1) in a period of time from time t1 at which the potential difference falls to the intermediate potential to time t2 at which the potential difference falls to the intermediate potential subsequently.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 24, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kenjiro Okaguchi
  • Patent number: 11082597
    Abstract: A camera module includes a fixed bracket, a camera body and an anti-shake assembly. The camera body includes a lens and an imaging sensor corresponding to the lens. The camera body is provided with a movable connecting member on an external side surface thereof arranged along a circumferential direction of the lens, the fixed bracket is provided with a movable fitting member corresponding to the movable connecting member, and the movable fitting member is movably connected with the movable connecting member. The anti-shake assembly includes a space attitude sensor and a driving module electrically connected with the space attitude sensor. The driving module is configured to be fitted with the camera body and to drive the camera body to perform an anti-shake motion relative to the fixed bracket according to shaking information obtained by the space attitude sensor.
    Type: Grant
    Filed: February 15, 2020
    Date of Patent: August 3, 2021
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Chihyi Cheng, Liangming Zhang, Yan Zheng
  • Patent number: 11077313
    Abstract: A method and apparatus generate electrical currents and/or voltage in tissue using devices composed of liquid crystals and magnetic particles. An instrument applies one or more magnetic fields to the devices to produce electrical energy.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: August 3, 2021
    Inventor: Irving N. Weinberg
  • Patent number: 11075613
    Abstract: A vibrator device includes a base, a relay substrate that is supported by the base, and a vibrator element that is supported by the relay substrate. In addition, the vibrator element includes a vibration substrate formed of a piezoelectric single-crystalline body and an excitation electrode disposed on the vibration substrate. In addition, the relay substrate includes a substrate formed of the piezoelectric single-crystalline body. A crystal axis of the substrate and a crystal axis of the vibration substrate are shifted from each other.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shiro Murakami, Atsushi Matsuo, Shinya Aoki, Masashi Shimura, Ryuta Nishizawa
  • Patent number: 11065821
    Abstract: A vibration welding device having a mechanically coupled multiple vibrator. Within this vibration welding device, the plurality of vibration units are arranged relative to an elongated tool such that the first direction of vibrations of the individual vibration units is oriented approximately transverse to a longitudinal axis of the tool such that, during a vibration welding process, two components are weldable to each other by vibrations different than a longitudinal direction of the components.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: July 20, 2021
    Assignee: BRANSON Ultraschall Niederlassung der Emerson Technologies GmbH & Co. OHG
    Inventor: Wilfried Lotz
  • Patent number: 11045600
    Abstract: An apparatus and method are disclosed for controlling infusion of liquid into a patient using a peristaltic pump. The liquid infusion apparatus includes a liquid conduit having a proximal segment, a distal segment and an intermediate segment. The liquid infusion apparatus also includes a flow valve in fluid communication with the intermediate and distal segments. The flow valve includes a shuttle member slidably disposed within a housing about the distal segment, the shuttle member being configured for lateral movement relative to an elongated axis of the distal segment. The shuttle member is configured to operate in a first configuration to impede fluid flow through the liquid conduit and in a second configuration for which fluid flow through the liquid conduit is unimpeded. The shuttle member includes a resilient grasper for selectively engaging and disengaging a mating actuator resiliently received by the grasper.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: June 29, 2021
    Assignee: IRADIMED CORPORATION
    Inventor: Roger E. Susi
  • Patent number: 11031884
    Abstract: A control device for a vibration actuator includes a detection signal acquisition section adapted to obtain an alternating-current detection signal corresponding to a vibration of the resonator body from the resonator bodies, a phase difference detection section adapted to detect a phase difference between the drive signal and the detection signal with respect to the resonator bodies, a resonator body selection section adapted to select one from the resonator bodies, and a drive signal control section adapted to adjust a frequency of the drive signal so that the phase difference in the resonator body selected comes closer to a target value.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 8, 2021
    Inventors: Yutaka Arakawa, Kiichi Kajino
  • Patent number: 11008679
    Abstract: It is disclosed a woven textile fabric comprising a first and a second electrically conductive layer (20; 30) of interwoven conductive yarns (22, 24; 32, 34) and a first intermediate pseudo-layer (40) of structural and insulating yarns (45) comprised between the first and the second electrically conductive layer and a plurality of binding yarns (47) interlacing the first and second conductive layers (20; 30) and the intermediate layer (40). The structural yarns (45) and the binding yarns (47) have piezoelectric properties.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: May 18, 2021
    Assignee: Sanko Tekstil Isletmeleri San. Ve Tic. A.S.
    Inventors: Ozgur Cobanoglu, Deniz Iyidogan, Jitka Eryilmaz, Ali Kemal Agirman, Ozgur Akdemir
  • Patent number: 10962514
    Abstract: An actuating and sensing apparatus includes a circuit board, a housing, an actuating device and a sensor. The housing is disposed on the circuit board and includes an entrance opening, an exit opening and a compartment. The compartment is in communication with an external environment of the housing through the entrance opening and the exit opening. The actuating device is disposed within the compartment and closing the exit opening. The sensor is disposed within the compartment and corresponding to the entrance opening. When the actuating device is enabled, a gas within the compartment is guided to the external environment outside the housing, and a pressure gradient is generated in the compartment so as to introduce a gas from the external environment outside the housing into the compartment through the entrance opening to make the gas detected by the sensor.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 30, 2021
    Assignee: MICROJET TECHNOLOGY CO., LTD.
    Inventors: Hao-Jan Mou, Shou-Hung Chen, Shih-Chang Chen, Jia-Yu Liao, Mei-Yen Chen, Chi-Feng Huang, Wei-Ming Lee
  • Patent number: 10958193
    Abstract: A piezoelectric device includes a first member, a second member, a guide mechanism that guides the second member relative to the first member in a first direction, and a piezoelectric actuator that moves the second member relative to the first member in the first direction, the guide mechanism including a first rail and a second rail spaced apart from the first rail in a second direction orthogonal to the first direction, and the piezoelectric actuator, when viewed from a third direction orthogonal to both the first direction and the second direction, being disposed between the first rail or an extended line obtained by extending the first rail in the first direction and the second rail or an extended line obtained by extending the second rail in the first direction.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: March 23, 2021
    Inventors: Yutaka Arakawa, Tomohisa Iwazaki
  • Patent number: 10955384
    Abstract: An arrangement and a method are described for influencing and/or detecting a dynamic or static property of a support structure which has a support structure surface, with at least one planar first actuator element that includes at least one electrically and/or magnetically activated transducer material, and a fiber composite material which joins the first actuator element indirectly or directly to the support structure surface in a planar, which has at least one first fiber layer and a curable matrix. The first fiber layer at least partially covers the first actuator element resting indirectly or directly on the support structure surface, protrudes beyond the first actuator element on both sides along at least a spatial direction running parallel to the support structure surface, and permanently adheres directly to at least some areas of the support structure surface at least in the regions protruding beyond the first actuator element by means of the curable matrix.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 23, 2021
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Dirk Mayer, Rogério Salloum
  • Patent number: 10938325
    Abstract: A self-oscillating piezoelectric actuator drive circuit includes a integrating circuit; an inverter (INV1), inverters (INV2 and INV3) inverting an output signal of the inverter (INV1), sense resistors (Rs1 and Rs2) connected to output sides of the inverters (INV2 and INV3), a positive feedback resistor (Rfb2) feeding back an output signal of the inverters (INV2 and INV3) to the integrating circuit; and a negative feedback resistor (Rfb1) feeding back a voltage generated from the sense resistors (Rs1 and Rs2, Rs1<Rs2 in terms of a resistance value) to the integrating circuit. In a startup state, the sense resistor (Rs2) and the inverter (INV3) are selected, and in an operating state after the startup state, the sense resistor (Rs1) and the inverter (INV2) are selected.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: March 2, 2021
    Assignees: NEW JAPAN RADIO CO., LTD., MURATA MANUFACTURING CO., LTD.
    Inventors: Yasuyuki Endou, Toshio Imanishi, Hitoshi Matsuno
  • Patent number: 10916233
    Abstract: In accordance with embodiments of the present disclosure, a flextensional transducer for underwater operation includes a driving element and a stave. The stave is made from a material with elastic properties and has a porous structure. The porous structure is adapted to be modelled such that when in use, said porous structure of the stave is of an arbitrary alignment with respect to, for instance, the driving element, and has a degree of porosity. The degree of porosity is such that the elastic properties and vibrational frequency response of the stave can be customised with respect to its intended use.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: February 9, 2021
    Assignee: THALES HOLDINGS UK PLC
    Inventors: Andrew Bond, Alan Elliott
  • Patent number: 10908011
    Abstract: An apparatus and a method for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit, a driving/receiving unit for exciting the mechanically oscillatable unit to execute mechanical oscillations by means of an electrical exciting signal and for receiving and transducing mechanical oscillations into an electrical, received signal, an electronics unit, which electronics unit is embodied, to produce the exciting signal starting from the received signal, to set a predeterminable phase shift (??) between the exciting signal and the received signal, and from the received signal, to determine and/or to monitor the at least one process variable.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: February 2, 2021
    Assignee: ENDRESS+HAUSER SE+CO. KG
    Inventors: Romuald Girardey, Manuel Sautermeister, Tobias Brengartner
  • Patent number: 10859847
    Abstract: A camera module includes a lens barrel; an actuator driving the lens barrel in a direction perpendicular to an optical axis; and an aperture module adjusting an amount of light incident in the lens barrel. The aperture module includes an aperture coupled to the lens barrel, a magnet provided on one side of the aperture, a coil disposed opposite to the magnet, a position detector detecting a position of the magnet to generate a feedback signal, and a driver comparing an input signal indicating a target position of the magnet with the feedback signal to calculate an error value and generating a driving signal according to the calculated error value. The driver compares a current position of the lens barrel with a neutral position of the lens barrel to generate a compensation signal and compensates for one of the input signal and the feedback signal based on the compensation signal.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 8, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Woo Rhee, Min Gyu Kim, Sang Hyuk Kim
  • Patent number: 10845688
    Abstract: Movement of a movable portion without stopping at any moment can be achieved by a simple configuration including a beam structural portion including two beam portions extending in directions different from each other and one driving portion. Furthermore, a size reduction of a device is achieved in comparison with a case where a device includes a motor disposed for rotation driving.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 24, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Makiko Hino, Yasushi Mizoguchi
  • Patent number: 10838498
    Abstract: To provide a tactile vibration applying device that efficiently outputs vibrations using an electrostatic or piezoelectric actuator. The tactile vibration applying device includes the electrostatic or piezoelectric actuator formed in a flat shape, and expanding and contracting in a thickness direction, a first elastic body having an elastic modulus smaller than an elastic modulus of the actuator in the thickness direction and disposed to contact a surface of the actuator on a side of the first electrode, and a first cover covering a surface of the first elastic body opposite to a surface of the first elastic body contacting the actuator, pressing the actuator and the first elastic body in the thickness direction of the actuator, and holding the first elastic body in a state that the first elastic body is compressed more than the actuator.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: November 17, 2020
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Katsuhiko Nakano, Takanori Murase, Masaki Nasu
  • Patent number: 10833610
    Abstract: A control apparatus for a vibration-type actuator which improves acceleration performance and deceleration performance in driving the vibration-type actuator. The vibration-type actuator moves a vibrating body and a driven body relatively to each other. A vibration state of the vibrating body is detected based on a vibrating voltage or driving current generated in response to vibrations of the vibrating body. A relative speed of the vibrating body and the driven body is detected, and based on the detected vibration state and the detected relative speed, the vibration state of the vibrating body is controlled.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Jun Sumioka
  • Patent number: 10780458
    Abstract: An ultrasound sensor includes: a diaphragm; a plurality of first electrodes; a plurality of second electrodes; and a plurality of piezoelectric layers which is provided between the first electrode and the second electrode, in which, in a Z-direction, a portion in which the first electrode, the piezoelectric layer and the second electrode are overlapped is referred to as an active portion, and a range to the extent that the diaphragm is oscillatable by driving the active portion is referred to as a movable portion, when a unit including one movable portion and the active portion which is provided within the one movable portion is referred to as one ultrasound element in plan view, two or more types of ultrasound elements in which a dimension of the active portion with respect to a dimension of the movable portion is different from each other in plan view are provided.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 22, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Chikara Kojima
  • Patent number: 10768738
    Abstract: Disclosed herein are electronic devices having piezoelectric haptic actuators to generate haptic output. The haptic actuators can be configured as a beam with a bendable material layer and a piezoelectric material layer the cause the beam to bend. The bending force can be increased by coupling a magnet to the beam and positioning a ferritic plate near the magnet. Alternatively, a ferritic plate can be attached to the beam, with the magnet positioned apart from, but near, the plate. The haptic actuator can have a two-sided piezoelectric configuration, having a piezoelectric layer on each side of the bendable material layer. A two-sided piezoelectric configuration can have a second magnet and ferritic plate pair on a side of the beam opposite the first. The haptic actuator may use electromagnets.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: September 8, 2020
    Assignee: Apple Inc.
    Inventors: Zhipeng Zhang, Richard H. Koch
  • Patent number: 10709871
    Abstract: A catheter includes an electromechanical polymer (EMP) actuator disposed in a steerable tip at the distal end of the catheter. When activated, the EMP actuator deflects the steerable tip through an angle between 0 and 270 degrees, thus permitting the operator to steer the steerable tip through the vasculature. The steerable tip also has at least a first relatively stiff region and a second relatively flexible region, and the EMP actuator is provided next to the first relatively stiff region so that the steerable tip may toward the flexible region when activated. In one implementation, an external interface allows a user to select by name one of many sets of control signals, with each set of control signals being signals calibrated for configuring the catheter to mimic a known catheter.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 14, 2020
    Assignee: Strategic Polymer Sciences, Inc.
    Inventors: Richard Ducharme, Mark Levatich, Christophe Ramstein
  • Patent number: 10715071
    Abstract: A method for generating a motor drive signal is disclosed, which includes: obtaining a non-resonance frequency sine signal, and inputting the non-resonance frequency sine signal into a first system; processing, by the first system, the non-resonance frequency sine signal to obtain a correction input signal; inputting the correction input signal into a second system, and processing, by the second system, the correction input signal to obtain an output signal in the same mathematical form as the non-resonance frequency sine signal, wherein the first system is an inverse system of the second system; and using the output signal of the second system as the motor drive signal. The present disclosure further provides an apparatus for generating a motor drive signal. The method and apparatus for generating a motor drive signal enable the motor to have a smooth output effect after being excited by the non-resonance frequency sine signal.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: July 14, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Hanlin Deng, Liang Jiang
  • Patent number: 10707784
    Abstract: Provided are a piezoelectric driving device, an optical member driving device, a camera device, and an electronic apparatus, which are capable of performing driving only by one-direction oscillation modes, and capable of combining the oscillation modes to enable driving in two directions. A piezoelectric driving device (10) includes: a driving portion (12) to be brought into frictional contact with an object to be driven; and two piezoelectric portions (14a, 14b) (14c, 14d), which are provided to the driving portion (12), are arranged on a plane with the driving portion (12) being sandwiched between the two piezoelectric portions, and are configured to be bent with respect to the plane when voltages are applied thereto.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: July 7, 2020
    Assignee: New Shicoh Motor Co., Ltd.
    Inventors: Masahiro Akatsu, Kei Onodera
  • Patent number: 10700619
    Abstract: A piezoelectric actuator includes a plurality of piezoelectric elements that generate a driving force to be transmitted to a driven portion; and a power supply portion that supplies power to the plurality of piezoelectric elements. The plurality of piezoelectric elements are electrically connected to the power supply portion in parallel.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 30, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kiichi Kajino, Osamu Miyazawa
  • Patent number: 10690907
    Abstract: A scanner comprises a mirror, a first and second springs, an insulation layer and a first and second piezoelectric elements. The insulation layer is directly attached to the mirror and the first and second springs. The first and second piezoelectric elements are directly attached to the insulation layer. The first piezoelectric element has a first portion above the first spring, a mid-range portion above the mirror and a second portion above the second spring. The second piezoelectric element has a first portion above the first spring, a mid-range portion above the mirror and a second portion above the second spring. The first piezoelectric element has a first upper electrode layer, a first piezoelectric layer and a first lower electrode layer. The second piezoelectric element has a second upper electrode layer, a second piezoelectric layer and a second lower electrode layer.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: June 23, 2020
    Assignee: ULTIMEMS, INC.
    Inventors: Yee-Chung Fu, Han-Tang Su
  • Patent number: 10687884
    Abstract: Provided is an apparatus, system, and method for managing radio frequency (RF) and ultrasonic signals output by a generator that includes a surgical instrument comprising an RF energy output and an ultrasonic energy output and a circuit configured to receive a combined RF and ultrasonic signal from the generator. The circuit may be configured to isolate a direct current (DC) voltage from the combined RF and ultrasonic signal. The DC voltage may then be used to power various electrical components of the surgical instrument while still providing RF energy and ultrasonic energy for surgical application.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: June 23, 2020
    Assignee: Ethicon LLC
    Inventors: Eitan T. Wiener, David C. Yates, John E. Hein
  • Patent number: 10675870
    Abstract: A liquid ejection apparatus is disclosed. One apparatus includes a piezoelectric element. The piezoelectric element includes an upper electrode and a lower electrode. The lower electrode has a partial overlapping portion and a non-overlapping portion. The partial overlapping portion at least partially overlaps the pressure chamber. The partial overlapping portion of the lower electrode has two ends in the transverse direction. The upper electrode has two ends in the transverse direction. A distance from the center of the pressure chamber in the transverse direction to one of the two ends of the upper electrode in the transverse direction is smaller than a distance from the center of the pressure chamber in the transverse direction to a corresponding one of the two ends of the partial overlapping portion in the transverse direction.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 9, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Taiki Tanaka, Takashi Yoshikawa
  • Patent number: 10665771
    Abstract: A piezoelectric sensor comprises a microcontroller, a plurality of piezoelectric sensor elements of which at least two are useable for producing a haptic signal by a voltage (HV) generated by a boost converter connected to each piezoelectric sensor element, and connected to a piezo channel of the microcontroller. A multiplexer individually controls each of the switches if an enable a signal is present. The microcontroller is configured to use each of the piezo channels as a sensor channel for reading sensor input from the respective piezoelectric sensor element and in response to detecting a sensor input in at least one of the piezo channels to set the enable signal at the increase voltage pin and/or the enable signal pin, and to set a signal to at least one piezo channel in which the sensor input was detected.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: May 26, 2020
    Assignee: AITO BV
    Inventor: Jukka Riihiaho
  • Patent number: 10651364
    Abstract: A driving stage of a servo valve, including a hydraulic ejector and a hydraulic receiver able to be moved relative to each other, one of the two hydraulic units being integral with a mobile unit, movable relative to a body of the servo valve through actuation means, characterized in that the actuation means comprise two piezoelectric actuators connected in series. Control device comprising a servo valve comprising such a driving stage.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 12, 2020
    Assignee: ZODIAC HYDRAULICS
    Inventors: Jean-Luc Bertrand, Catherine Mailhan
  • Patent number: 10635216
    Abstract: A signal extraction circuit includes: a first storage sub-circuit configured to receive a first signal including superimposed first touch signal and piezoelectric signal; a second storage sub-circuit configured to receive a second signal including superimposed second touch signal and piezoelectric signal, a phase of the second touch signal being opposite to a phase of the first touch signal; and an output sub-circuit configured to output the piezoelectric signals according to the first signal and the second signal during a third time period.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: April 28, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chih Jen Cheng, Yuzhen Guo, Haisheng Wang, Xiaoliang Ding, Pengpeng Wang, Yingming Liu, Yanling Han, Bo Chen
  • Patent number: 10620312
    Abstract: The arrangements of the present disclosure provide a locating apparatus, a locating method, and a shelf. The locating apparatus includes a rotating mechanism, a distance measuring mechanism, and a locating circuit. The rotating mechanism is configured to control the distance measuring mechanism to rotate in a plane where the distance measuring mechanism is positioned, and to measure a rotation angle of the distance measuring mechanism in the plane. The distance measuring mechanism is configured to measure a distance between the distance measuring mechanism and an obstacle. The locating circuit is configured to determine a position of the obstacle in the plane based on the rotation angle of the distance measuring mechanism in the plane and the distance between the distance measuring mechanism and the obstacle.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: April 14, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wei Deng, Shijie Cao, Huawei Yu, Hongyan Pei
  • Patent number: 10569302
    Abstract: Implementations of the subject matter described herein relate to sensors including piezoelectric micromechanical ultrasonic transducer (PMUT) sensor elements and arrays thereof. The PMUT sensor elements may be switchable between a non- ultrasonic force detection mode and an ultrasonic imaging mode. A PMUT sensor element may include a diaphragm that is capable of a static displacement on application of a force and is capable of a dynamic displacement when the PMUT sensor element transmits or receives ultrasonic signals. In some implementations, a PMUT sensor element includes a two dimensional-electron gas structure on the diaphragm. The sensors may further include a sensor controller configured to switch between a non-ultrasonic force detection mode and an ultrasonic imaging mode for one or more of the PMUT sensor elements, wherein an applied force is measured in the non-ultrasonic force detection mode and wherein an object is imaged ultrasonically during the ultrasonic imaging mode.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: February 25, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Firas Sammoura, David William Burns, Ravindra Vaman Shenoy
  • Patent number: 10535332
    Abstract: A method includes transmitting a focused ultrasound wave into a medium to form (i) an ultrasound intensity well within the medium that exhibits a first range of acoustic pressure and (ii) a surrounding region of the medium that surrounds the ultrasound intensity well and exhibits a second range of acoustic pressure that exceeds the first range of acoustic pressure. The method further includes confining an object within the ultrasound intensity well. Additionally, an acoustic lens is configured to be acoustically coupled to an acoustic transducer. The acoustic lens has a varying longitudinal thickness that increases proportionally with respect to increasing azimuth angle of the acoustic lens. Another acoustic lens is configured to be acoustically coupled to an acoustic that increases proportionally with respect to increasing azimuth angle of the segment.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: January 14, 2020
    Assignee: University of Washington
    Inventors: Adam D. Maxwell, Oleg A. Sapozhnikov, Wayne Kreider, Michael R. Bailey
  • Patent number: 10509234
    Abstract: A lens driving apparatus with a closed-loop anti-shake structure, including: a lens holder including a coil; a frame including a plurality of magnets and receiving the lens holder; a driving circuit board disposed under the frame; a plurality of first set of elastic bodies configured such that the lens holder remains movable in a direction of a first axis with respect to the frame; a plurality of second set of elastic bodies configured such that the frame remains movable in a direction perpendicular to the first axis with respect to the driving circuit board; and a first optical module and a first optical reference respectively disposed at the driving circuit board and the lens holder, the first optical module sensing a relative movement of the first optical reference so as to sense a movement of the lens holder in the direction of the first axis.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: December 17, 2019
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Shu-Shan Chen, Cheng-Kai Yu, Bing-Ru Song
  • Patent number: 10498284
    Abstract: A motor drive controller includes: a control circuit that controls an AC current flowing in a motor; a frequency modulation unit that frequency-modulates a speed of the motor when the motor is driven at a predetermined speed; and a current effective value controller that decreases an effective value of the AC current flowing in the motor as the speed of the motor modulated by the frequency modulation unit becomes closer to a resonant frequency of the motor.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 3, 2019
    Assignee: Minebea Co., Ltd.
    Inventors: Shigeki Miyaji, Takayuki Matsui, Tetsuya Seki
  • Patent number: 10488930
    Abstract: The present disclosure relates to the field of display technologies, and provides a display device and a method for providing haptic feedbacks using the same. The display device comprises: a display assembly, wherein the display assembly comprises a display face and a non-display face opposite to the display face; a transducer; and a haptic engine. Specifically, the transducer is arranged on the non-display face of the display assembly, and configured to output a current with corresponding amplitude according to its own deformation. Furthermore, the haptic engine is electrically coupled to the transducer, and configured to generate different degrees of haptic feedbacks based on the amplitude of the current output by the transducer.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 26, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Changjun Zhang
  • Patent number: 10468581
    Abstract: A method for driving a piezo actuator includes detecting consumption current by stepwise sweeping the frequency of an actuator driving signal to drive the piezo actuator vibrated in response to first and second vibration modes from a first reference frequency and determining a frequency at which the consumption current is inflected to be a first resonant frequency, detecting consumption current by stepwise sweeping the frequency of the actuator driving signal from a second reference frequency and determining a frequency at which the consumption current is inflected to be a second resonant frequency, and outputting an actuator driving signal in response to the first resonant frequency and the second resonant frequency.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: November 5, 2019
    Assignee: MPLUS CO., LTD.
    Inventors: Yeon Ho Son, Dong Su Moon, Kyung Su Park, Joon Choi, Jung Hyun Park
  • Patent number: 10457040
    Abstract: An electronic circuit for driving an inkjet print element in an array of print elements with an electric waveform is provided. The print element includes a piezo transducer for converting the electric waveform in a mechanical displacement. The electric waveform is tunable for an individual print element. The circuit includes a common waveform generator that is connected to the piezo transducer through a first print data dependent switch for providing an electric waveform independent of the print element. The circuit further includes a waveform tuning part, dependent on the print element and the print data, for controlling a second switch that adds electric energy from a voltage source to the electric waveform. The switches are operable in either a saturation state or a blocking state to limit an amount of dissipation in the switches.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 29, 2019
    Assignee: OCÉ-TECHNOLOGIES B.V.
    Inventors: Ralph Van Der Heyden, Cor Venner, Hylke Veenstra
  • Patent number: 10416572
    Abstract: A positioning system including: a first body; a second body; and an actuator arranged between the first body and the second body to position the first body relative to the second body, wherein the actuator includes a first piezoelectric actuator and a second piezoelectric actuator arranged in series, wherein the first piezoelectric actuator has a first hysteresis, wherein the second piezoelectric actuator has a second hysteresis smaller than the first hysteresis, and wherein the second piezoelectric actuator has a positioning range at least equal to the first hysteresis.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: September 17, 2019
    Assignee: ASML Netherlands B.V.
    Inventors: Hans Butler, Wim Symens, Bas Jansen
  • Patent number: 10389276
    Abstract: A piezoelectric actuator that may include a monolithic frame having an integral bias band that provides a resilient restoring force between a first contact surface and a second contact surface of the actuator that may be used to rotate an adjustment shaft. In some cases, a preload mechanism may also be included with the frame. Such piezoelectric actuators may be used for adjustable optical mounting devices such as optical mounting devices.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: August 20, 2019
    Assignee: NEWPORT CORPORATION
    Inventor: Hongqi Li
  • Patent number: 10355621
    Abstract: A control apparatus is capable of improving responsiveness in a minute movement of a vibration-type actuator that has a vibration body (a piezoelectric device and an elastic body) and a driven body that pressure contacts with the vibration body. A driving unit moves the driven body by causing a thrust-up vibration in a pressurizing direction and a conveyance vibration in a perpendicular direction in the vibration body by applying alternating voltages to the piezoelectric device. A control unit feedback-controls a position of the driven body by using a first operational parameter that defines an amplitude ratio of the conveyance vibration to the thrust-up vibration and a second operational parameter that defines amplitudes of the conveyance vibration and the thrust-up vibration. A correction unit corrects a control amount of the first or second operational parameter so as to increase as the amplitude ratio decreases.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Jun Sumioka
  • Patent number: 10338680
    Abstract: Provided is an operating apparatus having a feedback mechanism. An apparatus main body is supported on a base using a plurality of plurality of supporting metal plates. Each of the supporting metal plates includes a first mounting piece, a second mounting piece, and an intermediate plate. When a pressing force of a finger on an operating surface of the apparatus main body acts, the intermediate plate is deformed to depress the apparatus main body, thereby operating a detecting member. When a feedback force from the feedback mechanism acts on the apparatus main body, the second mounting piece is bent to move the apparatus main body along the feedback force.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 2, 2019
    Assignee: Alpine Electronics, Inc.
    Inventor: Yasushi Shibuya
  • Patent number: 10317999
    Abstract: A haptic device comprises a wearable material configured to a portion of a user. A vibrotactile actuator is coupled to the wearable material and provides haptic feedback in accordance with a drive signal. A driver circuit is electrically coupled to the vibrotactile actuator and provides the drive signal to the vibrotactile actuator. The driver circuit includes an alternating current (AC) voltage source assembly that has a first AC voltage source and a second AC voltage source, each having a terminal. The terminal of the first AC voltage source is electrically coupled to the vibrotactile actuator. A capacitive element electrically is coupled to the terminal of the negative AC voltage source and a regulating element. The regulating element includes a first coupling point and a second coupling point. The first coupling point is electrically coupled to the capacitive element and the vibrotactile actuator, and the second coupling point is grounded.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: June 11, 2019
    Assignee: Facebook Technologies, LLC
    Inventors: Adam Ahne, David R. Perek
  • Patent number: 10305397
    Abstract: A vibration actuator unit includes: an electromechanical converting element that converts an electric vibration of an applied actuating voltage into a mechanical vibration; and a contact portion that contacts an actuated surface of an actuating subject and a transmits a mechanical vibration of the electromechanical converting element to the actuated surface as an actuating force, wherein the electromechanical converting element periodically bends within a first vibration plane crossing the actuated surface to vibrate the contact portion within the first vibration plane, and periodically bends within a second vibration plane crossing the first vibration plane to vibrate the contact portion within the second vibration plane.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: May 28, 2019
    Assignee: NIKON CORPORATION
    Inventors: Eiji Matsukawa, Masaaki Kusano
  • Patent number: 10277987
    Abstract: In accordance with embodiments of the present disclosure, a device may include a piezoelectric speaker for generating sound, a microphone, and a controller communicatively coupled to the speaker and the microphone. The controller may be configured to receive a first signal from the piezoelectric speaker, the first signal induced at least in part by sound incident on the speaker other than sound generated by the piezoelectric speaker, receive a second signal from the microphone, the second signal induced by sound incident on the microphone, process at least one of the first signal and the second signal to determine at least one characteristic of sound incident upon at least one of the piezoelectric speaker and the microphone, and select at least one of the microphone and the piezoelectric speaker as a signal source for incident sound based on the at least one characteristic.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 30, 2019
    Assignee: Cirrus Logic, Inc.
    Inventor: John L. Melanson
  • Patent number: 10241223
    Abstract: A sensor system for use in a wellbore is provided that can include a piezoelectric transducer for transmitting an acoustic wave into a fluid medium positioned in the wellbore by repeatedly bending between two positions in response to an actuation signal. The piezoelectric transducer can include at least four piezoelectric layers stacked on top of one another. Each of the four piezoelectric layers can be coupled to an adjacent layer via a bonding material. Each of the four piezoelectric layers can include a piezoelectric material, a top electrode coupled to a top surface of the piezoelectric material, and a bottom electrode coupled to a bottom surface of the piezoelectric material. The sensor system can also include a hydrophone for detecting a reflection or a refraction of the acoustic wave off an object in the wellbore and transmitting an associated signal to a processing device.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: March 26, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jing Jin, Abdul Wahab Chowdhury