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公开(公告)号：US11759822B2
公开(公告)日：2023-09-19
申请号：US16867298
申请日：2020-05-05
发明人： Zdenek Axman , Tomas Suchy , Petr Kamenicky
IPC分类号： B06B1/02
CPC分类号： B06B1/0215 , B06B2201/30 , B06B2201/55
摘要： Embodiments include a primary short circuit (PSC) coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period. The PSC and the dampening element may be activated substantially simultaneously. Activation of the PSC circuit mitigates a parallel resonance otherwise arising, in part, in the transducer, but, increases the received signal by a DC shift voltage. The dampening element dampens the DC shift voltage. The received signal may be dampened prior to amplification of the received signal by an amplifier. The dampening facilitates earlier and more precise measurement, during the reverberation period, of at least one operating characteristic for the PAS sensor. Another embodiment prevents the DC shift voltage by selectively activating the PSC within a determined time of a zero-crossing of a given signal.
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公开(公告)号：US11664185B2
公开(公告)日：2023-05-30
申请号：US17536223
申请日：2021-11-29
发明人： Jun Etoh , Hironori Ogawa , Shuichi Nakagawa , Terunobu Funatsu
CPC分类号： H01J37/023 , B06B1/0253 , B06B2201/30 , H01J2237/0216 , H03G3/20
摘要： A vibration damping system for a charged particle beam apparatus according to the present invention includes a column through which a charged particle beam passes, a vibration detection unit that detects vibration of the column, a damping mechanism that applies vibration to the column to suppress the vibration of the column, and a control device that controls the damping mechanism. The control device includes a damping gain control unit that amplifies a detection signal of the vibration detection unit with a set amplification factor and outputs an amplified detection signal as a control signal to the damping mechanism, and a saturation suppression unit that adjusts a feedback gain value of the damping gain control unit according to a detection signal of the vibration detection unit, a signal of the damping mechanism, and a maximum output value and a minimum output value of the damping mechanism.
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公开(公告)号：US10005105B2
公开(公告)日：2018-06-26
申请号：US14535574
申请日：2014-11-07
发明人： Satoshi Takahata
CPC分类号： B06B1/0207 , B06B2201/30 , B06B2201/55 , G01S7/524 , G01S15/10 , G01S15/104
摘要： An ultrasonic sensor includes a signal generation circuit, an amplifier, and a matching circuit as a transmission-side circuit. The signal generation circuit includes a driving signal generation circuit that generates a driving signal for transmitting ultrasonic waves from an ultrasonic transducer for transmission and reception and a reverberation suppression signal generation circuit that generates a reverberation suppression signal for suppressing reverberation occurring at the ultrasonic transducer from which the ultrasonic waves are transmitted. The reverberation suppression signal generation circuit generates the reverberation suppression signal having a frequency of 1/2 times the frequency of the driving signal and applies the reverberation suppression signal to the ultrasonic transducer at a time delayed from the driving signal by a half wavelength. With the above configuration, an ultrasonic sensor driving circuit capable of reducing the duration of the reverberation occurring at the ultrasonic transducer is provided.
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公开(公告)号：US4156823A
公开(公告)日：1979-05-29
申请号：US881678
申请日：1978-02-27
申请人： Hideyuki Suzuki
发明人： Hideyuki Suzuki
CPC分类号： G10K11/002 , B06B1/0215 , H01L41/042 , H03H11/44 , B06B2201/30
摘要： In an ultrasonic wave generator or receiver using an ultrasonic wave transducer, a negative immittance converter is inserted in a circuit of the generator or receiver in order to cancel components which impede the damping characteristics of the ultrasonic transducer.
摘要翻译： 在使用超声波换能器的超声波发生器或接收器中，负的导纳转换器插入到发生器或接收器的电路中，以便消除妨碍超声换能器的阻尼特性的部件。
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公开(公告)号：US3409787A
公开(公告)日：1968-11-05
申请号：US59458866
申请日：1966-11-15
申请人： AIR FORCE USA
发明人： EUGENE AGALIDES , STEWART LESLIE C
CPC分类号： B06B1/023 , B06B2201/30 , G01R29/22
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公开(公告)号：US12070772B2
公开(公告)日：2024-08-27
申请号：US18456973
申请日：2023-08-28
发明人： Zdenek Axman , Tomas Suchy , Petr Kamenicky
CPC分类号： B06B1/0215 , G10K9/122 , B06B2201/30 , B06B2201/55
摘要： Embodiments include a primary short circuit coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period.
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公开(公告)号：US20230275497A1
公开(公告)日：2023-08-31
申请号：US18175626
申请日：2023-02-28
CPC分类号： H02K33/18 , H02K7/02 , B06B1/045 , B06B2201/30
摘要： A vibration generation device includes: a base configured to transmit vibration to an object; a pendulum supported by the base swingably around a rotation axis; and a driving unit including a magnet, and a coil disposed to face the magnet in a non-contact manner, and configured to swing the pendulum. One member of the magnet and the coil is provided at a position on the pendulum away from the rotation axis. The base includes a support portion supporting the pendulum swingably around the rotation axis. A part of an extension surface of a facing surface of the support portion facing the pendulum is included in a swingable range of the pendulum. The support portion is provided outside the swingable range of the pendulum when viewed along the rotation axis.
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公开(公告)号：US20150063073A1
公开(公告)日：2015-03-05
申请号：US14535574
申请日：2014-11-07
发明人： SATOSHI TAKAHATA
CPC分类号： B06B1/0207 , B06B2201/30 , B06B2201/55 , G01S7/524 , G01S15/10 , G01S15/104
摘要： An ultrasonic sensor includes a signal generation circuit, an amplifier, and a matching circuit as a transmission-side circuit. The signal generation circuit includes a driving signal generation circuit that generates a driving signal for transmitting ultrasonic waves from an ultrasonic transducer for transmission and reception and a reverberation suppression signal generation circuit that generates a reverberation suppression signal for suppressing reverberation occurring at the ultrasonic transducer from which the ultrasonic waves are transmitted. The reverberation suppression signal generation circuit generates the reverberation suppression signal having a frequency of 1/2 times the frequency of the driving signal and applies the reverberation suppression signal to the ultrasonic transducer at a time delayed from the driving signal by a half wavelength. With the above configuration, an ultrasonic sensor driving circuit capable of reducing the duration of the reverberation occurring at the ultrasonic transducer is provided.
摘要翻译： 超声波传感器包括作为发送侧电路的信号生成电路，放大器以及匹配电路。 信号发生电路包括：驱动信号产生电路，其生成用于发送来自用于发送和接收的超声波换能器的超声波的驱动信号;以及混响抑制信号产生电路，其产生用于抑制在超声波换能器处发生的混响的混响抑制信号， 发射超声波。 混响抑制信号产生电路产生具有驱动信号频率1/2倍频率的混响抑制信号，并将该混响抑制信号在与驱动信号相比延迟半波长的时间施加到超声波换能器。 利用上述结构，提供了能够减少在超声波换能器处发生混响的持续时间的超声波传感器驱动电路。
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公开(公告)号：US20110102114A1
公开(公告)日：2011-05-05
申请号：US11792600
申请日：2005-11-14
申请人： Martin Reiche
发明人： Martin Reiche
IPC分类号： H03H7/25
CPC分类号： G01S7/524 , B06B1/0215 , B06B2201/30 , H03J3/20 , H03J5/246 , Y10S367/903
摘要： A device for the attenuation of an anti-resonant circuit which has a first capacitor and a secondary inductance. A signal is able to be coupled into the anti-resonant circuit via a primary inductance. An attenuator is connected in parallel to a switching device and to the secondary inductance and/or the primary inductanace.
摘要翻译： 一种用于衰减具有第一电容器和次级电感的反谐振电路的装置。 信号能够通过初级电感耦合到反谐振电路中。 衰减器与开关器件并联连接到次级电感和/或主电感器。
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公开(公告)号：US06134964A
公开(公告)日：2000-10-24
申请号：US150358
申请日：1998-09-09
申请人： Peter Jaenker , Henning Strehlow
发明人： Peter Jaenker , Henning Strehlow
CPC分类号： F16F7/1005 , B06B1/0261 , F16F15/005 , F16F7/116 , G10K11/172 , B06B2201/20 , B06B2201/30
摘要： A mechanical resonator has an electronically adjustable resonance frequency and is especially adapted to be used as a tunable vibration absorber. The mechanical resonator includes an inertial mass mounted on a free end of a spring, which is secured at its other end to the structure that is to be vibrationally damped. In order to vary the resonant frequency of the resonator, an electromechanical converter such as a piezoelectric element is connected to the spring and/or the inertial mass, and a displacement and/or acceleration sensor provides a sensor signal that is dependent on the respective displacement and/or acceleration of the spring and/or the inertial mass. An electronic control circuit generates an actuating signal based on the sensor signal. The actuating signal is applied to the electro-mechanical converter, which responsively exerts an adjusting force onto the spring and/or the inertial mass. The control circuit may include one or more variable amplifiers, inverters, and phase shifters, to control the actuating signal such that the adjusting force exerted by the electromechanical converter either counteracts or reinforces the bending force exerted by the inertial mass on the spring. In this manner, the effective total spring constant of the resonator can be increased or decreased relative to the inherent spring constant of the spring, whereby the resonant frequency is adjusted.
摘要翻译： 机械谐振器具有电子调节的共振频率，并且特别适合用作可调节振动吸收器。 机械谐振器包括安装在弹簧的自由端上的惯性质量体，其在另一端被固定在要被振动阻尼的结构上。 为了改变谐振器的谐振频率，诸如压电元件的机电转换器连接到弹簧和/或惯性块，位移和/或加速度传感器提供依赖于相应位移的传感器信号 和/或弹簧和/或惯性质量的加速度。 电子控制电路基于传感器信号产生启动信号。 致动信号被施加到电 - 机械转换器，其响应地对弹簧和/或惯性质量施加调节力。 控制电路可以包括一个或多个可变放大器，反相器和移相器，以控制致动信号，使得由机电转换器施加的调节力抵消或加强由惯性块施加在弹簧上的弯曲力。 以这种方式，可以相对于弹簧的固有弹簧常数增加或减小谐振器的有效总弹簧常数，从而调节谐振频率。
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