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公开(公告)号：US20240243673A1
公开(公告)日：2024-07-18
申请号：US18564261
申请日：2022-05-27
摘要： Drive device (1) for driving a spindle (90) with a spindle axis A90, which is accommodated in a spindle space (39) extending along a longitudinal axis of the spindle space, the drive device (2) comprising a first actuator device (10, 210) and a second actuator device (20, 220) which can be reversibly varied when actuated along a first actuator axis L1 or a second actuator axis L2, an actuating device (40, 140, 240), a frame device (30, 130, 230), the arrangement comprising the frame device (30, 130, 230) and the actuating device (40, 140, 240) comprising at least two contact surface sections (51, 52, 151, 152, 254, 264) provided for contact with two different contact areas (91, 92) of the spindle (90) to rotate the spindle (90), wherein the frame device (30, 130, 230) is designed as a structurally continuous component which completely surrounds the spindle space (39), the first actuator device (10) and the second actuator device (20), drive motor and method for driving a spindle (90).
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公开(公告)号：US20240032432A1
公开(公告)日：2024-01-25
申请号：US18374579
申请日：2023-09-28
IPC分类号： H10N30/87 , H02N2/10 , H02N2/00 , H10N30/853 , H10N30/082 , H10N30/06
CPC分类号： H10N30/87 , H02N2/108 , H02N2/22 , H10N30/8548 , H10N30/082 , H10N30/06 , G02B26/0858
摘要： A drive element includes: a fixing part; a drive part placed on a lateral side of the fixing part and coupled to the fixing part; and a movable part configured to be driven by the drive part. A lower electrode, a piezoelectric layer, and an upper electrode are formed in order in an upper surface region of the fixing part and the drive part, and in a wiring region on the fixing part side of the upper surface region, a low dielectric layer containing at least one element forming the piezoelectric layer is formed on an upper surface of the piezoelectric layer.
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3.发明授权公开(公告)号：US11881795B2
公开(公告)日：2024-01-23
申请号：US17980557
申请日：2022-11-04
发明人： Ryuichi Sato
摘要： A method of controlling a piezoelectric driving apparatus including a vibration section that has a piezoelectric element and a transmission section that transmits vibration of the vibration section to a driven body, and, by energization of the piezoelectric element, vibrates the vibration section in a combination of longitudinal vibration and bending vibration to cause the transmission section to perform an elliptical motion and to move the driven body by the elliptical motion, the method of controlling the piezoelectric driving apparatus including switching, according to an external force received by the driven body, a drive algorithm of the piezoelectric driving apparatus between a first drive mode in which a separation amplitude, which is an amplitude of the longitudinal vibration, is changed while a feed amplitude, which is an amplitude of the bending vibration, is constant and a second drive mode in which both the feed amplitude and the separation amplitude are changed.
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公开(公告)号：US11843279B2
公开(公告)日：2023-12-12
申请号：US17858644
申请日：2022-07-06
发明人： Akira Shimada
摘要： Provided is a vibration wave driving apparatus comprising: a vibration actuator; and a driven member configured to be driven by the vibration actuator, wherein the vibration actuator includes: a vibrator having an electric-mechanical energy conversion element and an elastic member to which the electric-mechanical energy conversion element is fixed; a pressurizing member configured to pressurize the vibrator; a contacting member configured to pressurizing-contact with the vibrator by pressurizing the vibrator by the pressurizing member and move relative to the vibrator; an outputting member configured to output a driving force to the driven member, the driving force generated by the relative-moving of the contacting member to the vibrator, and wherein the driven member includes an output transmission member configured to hold the outputting member in a direction of the relative-moving with a predetermined spring force.
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公开(公告)号：US20230198429A1
公开(公告)日：2023-06-22
申请号：US18074886
申请日：2022-12-05
摘要： A rotary piezoelectric motor (1), in particular for a timepiece, including a rotor (3) configured to rotate and actuate a mechanical device, and a stator (2) configured to rotate the rotor (3), the stator (2) including a piezoelectric actuator provided with a resonator (29) arranged to perform an oscillatory motion, and a fixed element (4). The resonator in a movable element (5) arranged at a distance from the fixed element (4) and connected to the fixed element (4), the piezoelectric actuator being configured to move the movable element (5) against the rotor (3) to make it rotate, the movement of the movable element (5) making the rotor (3) rotate in a first direction.
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公开(公告)号：US11664748B2
公开(公告)日：2023-05-30
申请号：US17231219
申请日：2021-04-15
发明人： Akira Shimada , Akio Atsuta
摘要： A drive control device 100, which controls driving of a vibration type actuator 200 including a vibrator 214 that includes a piezoelectric element 203, and a rotor 207, includes amplifier circuits 11 and 12 amplifying a power supply voltage to generate a drive voltage to be applied to the piezoelectric element 203, and a microcomputer unit 1. The microcomputer unit 1 performs a control to increase the amplitude of the drive voltage to perform acceleration from when the vibration type actuator 200 is started to when a target speed of the rotor 207 is reached, decrease the frequency of the drive voltage without changing the amplitude of the drive voltage when power supplied to the piezoelectric element 203 exceeds a first power limit P-Lim1, and increase the amplitude of the drive voltage when the power falls below a second power limit P-Lim2 during an operation of decreasing the frequency.
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公开(公告)号：US20230031934A1
公开(公告)日：2023-02-02
申请号：US17860006
申请日：2022-07-07
发明人： Yuki Oda , Satoshi Tsuchiya
IPC分类号： H01L41/09 , H01L41/053 , H02N2/12 , H02N2/10
摘要： A vibrating actuator includes a contact body and a vibrating body that vibrates, has an energy conversion element, and has an elastic body in contact with the contact body to move relative to each other from the vibration. The contact body has a base part, a thin plate part, a support part, and a friction member. The thin plate part extends from the base part toward an annular center axis of the base part and the support part is disposed at an end of the thin plate part. The friction member is disposed to the support part as a member separate from the support part and in contact with the elastic body. Density of the friction member is higher than density of the thin plate part. A weight ratio of the thin plate part to a total weight of the friction member and the support part is 0.5 to 1.5.
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公开(公告)号：US11569430B2
公开(公告)日：2023-01-31
申请号：US16603024
申请日：2018-04-04
IPC分类号： H01L41/047 , H01L41/09 , H02N2/00 , H02N2/02 , H02N2/10
摘要： Method for operating an ultrasonic motor with an ultrasonic actuator formed as a plate and an electrical excitation device. The ultrasonic actuator has at least four identical volume regions arranged symmetrically in relation to a transverse plane and in relation to a longitudinal plane, each volume region forming acoustic standing waves and static bending deformations. The electrical excitation device provides at least one electric alternating voltage and two static electric voltages the at least one alternating voltage U1 being applied in a dynamic operating mode simultaneously to two of the generators for forming an acoustic standing wave in the ultrasonic actuator, and the two static electric voltages being applied in a static operating mode simultaneously to all generators for forming a static bending deformation of the ultrasonic actuator.
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公开(公告)号：US11533004B2
公开(公告)日：2022-12-20
申请号：US16953271
申请日：2020-11-19
发明人： Donghyun Hwang , Byeongkyu Lim
摘要： The present disclosure provides a rotary motor, which includes: a clamping member having a gripping unit installed at an inner circumference of a rotor to grip the rotor during a predetermined time; and a driving member installed at the inner circumference of the rotor and having a rotation unit configured to make an elastic deformation to rotate by a predetermined angle and then return to an original state so that the rotor is rotated.
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公开(公告)号：US20220399834A1
公开(公告)日：2022-12-15
申请号：US17288561
申请日：2020-12-02
申请人： NANTONG UNIVERSITY
发明人： Liang HUA , Ling JIANG , Juping GU , Ping LU , Yuxuan GE , Yisheng HUANG , Chunkai YAN , Wenbo SU
摘要： A composite motor having high-precision positioning, comprising: a housing (1), a rough positioning assembly, a hollow output shaft (2), a fine positioning assembly, a power switching apparatus and a controller (6). A stepper motor (3) in the rough positioning assembly is responsible for rough positioning of the composite motor, an annular travelling wave ultrasonic motor in the fine positioning assembly is responsible for tail end fine positioning of the composite motor, and the controller (6) implements power output switching between the annular travelling wave ultrasonic motor and the stepper motor (3). The composite motor effectively solves the problem that annular travelling wave ultrasonic motors which operate continuously for a long time have a short service life, and ensures high-precision positioning while also extending motor service life.
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