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公开(公告)号：US3922589A
公开(公告)日：1975-11-25
申请号：US48418374
申请日：1974-06-28
申请人： VIBRA METRICS INC
发明人： PECKINGHAM JOHN F
CPC分类号： H02K33/00
摘要： A drive circuit for electromagnetic vibrators. In a preferred embodiment, a transistor switch is used in combination with a passive waveshaping network to achieve approximately equal rise and fall times for coil current. The waveshaping network also protects the transistor switch from excessive voltages during switching.
摘要翻译： 电磁振动器的驱动电路。 在优选实施例中，晶体管开关与无源波形网络组合使用，以实现线圈电流的大致相等的上升和下降时间。 波形网络还可以在开关期间保护晶体管开关免受过大的电压。
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公开(公告)号：US3864618A
公开(公告)日：1975-02-04
申请号：US30598272
申请日：1972-11-13
申请人： MEM CONTROLS INC
发明人： HAMMOND PETER W
CPC分类号： G05D19/02 , B65G27/32 , G01M7/022 , H02K33/00 , H02K33/10 , H02M5/458 , H03L7/00 , Y02B70/145
摘要： A variable frequency electrical power supply circuit includes a power circuit that provides a drive signal to energize a load and a control circuit that controls application of the drive signal to the load. The load may be an electro-magnetic or electromechanical device, such as a solenoid to provide in response to the drive signal a motive force to a mechanical apparatus for causing resonant vibratory motion therein. The power supply circuit may be self tuning to the resonant frequency of the mechanical apparatus or may be manually tunable.
摘要翻译： 变频电源电路包括提供驱动信号以激励负载的电源电路和控制驱动信号施加到负载的控制电路。 负载可以是电磁或机电装置，例如螺线管，以响应于驱动信号提供一个用于在其中引起共振振动的机械装置的动力。 电源电路可以自调谐到机械设备的谐振频率，或者可以是手动可调谐的。
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公开(公告)号：US3478769A
公开(公告)日：1969-11-18
申请号：US3478769D
申请日：1967-11-29
申请人： US NAVY
发明人： ZAVOD PIERCE H , ULRICH JOHN L
CPC分类号： G05D16/2046 , A61G10/026 , B63C11/325 , Y10T137/2663 , Y10T137/86445 , Y10T137/87265
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94.发明授权Frequency doublers employing diode bridge and phase shifter circuit at the input 失效频率倍增器采用二极管桥和移相器电路输入
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公开(公告)号：US12088225B2
公开(公告)日：2024-09-10
申请号：US17812857
申请日：2022-07-15
申请人： ABB Schweiz AG
发明人： Pedro Rodriguez , Rahul Kanchan , Omer Ikram Ul Haq , Qimao Liu , Ingo Stroka
CPC分类号： H02P23/0004 , G05D19/02
摘要： A field of electric drive devices and electric machines, such as electric motors and electric generators for industrial applications and more particularly to a method and an arrangement for controlling vibration of a variable frequency drive controlled electric machine. In the method for controlling vibration of a variable frequency drive controlled electric machine, the resonance frequency/frequencies and the stiffness are determined in a ramp up/ramp down test; amount of damping is determined in an impulse test; a mechanical transfer function is determined in a steady drive test; a vibration control model is determined utilizing said resonance frequency/frequencies, said stiffness, the amount of damping and the mechanical transfer function; and vibration is controlled utilizing the vibration control model.
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公开(公告)号：US11921923B2
公开(公告)日：2024-03-05
申请号：US16942772
申请日：2020-07-30
发明人： Sangwon Lee , Vivek Prakash Nigam
摘要： Described herein are embodiments for reducing haptic vibrations for electronic devices. Embodiments of an oscillation reduction scheme learned offline are disclosed for minimizing the acceleration for a haptic vibrator. A pattern and braking generation module outputs a pattern signal for amplification and then for driving the haptic vibrator. An accelerometer measures acceleration induced by vibration from the haptic vibrator. The pattern and braking generation module adjusts the pattern signal based on the measured acceleration to identify an optimal amplitude for a braking signal at each time frame. Such a closed-loop braking optimization process may be implemented to achieve an optimal or desired braking scheme for enhanced user haptic feedback.
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公开(公告)号：US11827504B2
公开(公告)日：2023-11-28
申请号：US17140271
申请日：2021-01-04
发明人： Yun Pan
CPC分类号： B67B7/38 , B67B2007/303 , G05D19/02
摘要： The invention provides an automatic stop method and device for a can opener. When a first rotation frequency of a bearing in a first preset time is smaller than a second rotation frequency of the bearing in a subsequent second preset time in the process of opening a can by a can opener blade and a difference between the second and first frequency reaches a preset value, it is determined that repeated cutting occurs, and the blade will be stopped in time to avoid problems caused by repeated cutting. Meanwhile, mean values of multiple data acquired within the first and second preset time are calculated, avoiding the problems of an excessively high and long instant processing burden of one time of data acquisition and errors caused by data acquired once, improving the timeliness and accuracy of the first and second frequency, and can opening can be controlled more accurately.
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公开(公告)号：US11808318B2
公开(公告)日：2023-11-07
申请号：US16966788
申请日：2019-03-20
申请人： LORD Corporation
发明人： Mark Norris , Stefan Barbulescu , Martin Bieber
CPC分类号： F16F15/002 , G05D19/02 , F16F7/1005 , F16F15/005 , F16F2230/08 , F16F2230/18
摘要： Systems, devices, and methods for active vibration control using circular force generators. In one aspect, a vehicle includes a vehicle frame, a cabin, an engine, and a number of vibration control devices mounted on the vehicle frame. Each vibration device includes a circular force generator comprising at least one mass and at least one motor configured to rotate the mass. The vibration control devices are configured to perform active vibration control to reduce noise and/or vibration within the cabin resulting from the engine deactivating a subset of cylinders in operation.
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公开(公告)号：US20230328370A1
公开(公告)日：2023-10-12
申请号：US18192014
申请日：2023-03-29
发明人： Shoma MIZUTANI
CPC分类号： H04N23/665 , G05D19/02 , H04N23/64
摘要： An image pickup apparatus includes an image sensor configured to receive light and accumulate charges, a vibration generator configured to generate vibration, an image sensor control unit configured to cause the image sensor to perform an electronic front curtain operation to start accumulating the charges, and an electronic rear curtain operation to finish accumulating the charges, and a vibration control unit configured to control the vibration generator. The vibration control unit causes the vibration generator to generate first vibration before accumulating the charges is started and second vibration after the accumulating the charges are finished.
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100.发明授权公开(公告)号：US11573151B2
公开(公告)日：2023-02-07
申请号：US16633657
申请日：2019-07-23
发明人： Induja Pavithran , Vishnu Rajasekharan Unni , Alan John Varghese , Praveen Kasthuri , Raman Pillai Indusekharan Nair Sujith
摘要： Embodiments herein provide a system (100) to estimate the amplitude of oscillations in a turbulent flow system (102) that exhibits oscillatory instabilities. The system (100) comprises of a sensor (102A) mounted on the turbulent flow system (102) to detect an oscillatory variable in the system obtaining a signal, a signal conditioner (104) that conditions the signal from the sensor, an amplitude estimator (110) that estimates the amplitude of the limit cycle oscillations, and also predict the proximity of the system to the oscillatory instability, a processor (108) connected to the amplitude estimator (110) to compare the predicted oscillation amplitude with a threshold value. The amplitude is estimated by estimating the spectral measure of the time series signal obtained from the system.
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