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公开(公告)号：US10928198B2
公开(公告)日：2021-02-23
申请号：US15690710
申请日：2017-08-30
发明人： Yohei Hatakeyama , Tetsuro Itakura
IPC分类号： G01C19/56 , G01C19/5776 , G01C19/5621 , G01C19/5614
摘要： A detection device detects a dynamic quantity exerted on a detection mechanical system including first and second mechanical oscillators. The detection device includes first to third transducers, a canceller, a low-pass filter, and an inverting amplification unit. The first transducer detects the first mechanical oscillator position in a first direction to output a first signal. The second transducer detects the second mechanical oscillator position in a second direction to output a second signal. The canceller inverts a direction in which a signal detected by the second transducer from the second mechanical oscillator varies according to the first signal. The third transducer detects the second mechanical oscillator position in the second direction to output a third signal. The inverting amplification unit gives a control signal generated by inverting the third signal to a second actuator moving the second mechanical oscillator.
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公开(公告)号：US10444776B2
公开(公告)日：2019-10-15
申请号：US16125982
申请日：2018-09-10
发明人： Tetsuro Itakura , Yohei Hatakeyama
摘要： According to one embodiment, a voltage-current conversion circuit includes an amplifier first, second and third inputs, a transistor including a first and second terminals, and a control terminal electrically connected to an output of the amplifier, and a serial connection including resistors connected in series between the first terminal and an ac ground, wherein a predetermined connecting point, among a first connecting point between the first terminal and the serial connection, a second connecting point between the ac ground and the serial connection, and one or more third connecting points between the resistors, is connected to the second input, and one of the connecting points other than the predetermined connecting point is connected to the third input.
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公开(公告)号：US20180143020A1
公开(公告)日：2018-05-24
申请号：US15690710
申请日：2017-08-30
发明人： Yohei Hatakeyama , Tetsuro Itakura
IPC分类号： G01C19/56
CPC分类号： G01C19/56 , B81B2201/0242 , G01C19/5614 , G01C19/5621
摘要： A detection device detects a dynamic quantity exerted on a detection mechanical system including first and second mechanical oscillators. The detection device includes first to third transducers, a multiplication unit, a low-pass filter, and an inverting amplification unit. The first transducer detects position of the first mechanical oscillator in a first direction to output a first signal. The second transducer detects position of the second mechanical oscillator in a second direction to output a second signal. The multiplication unit multiplies the signal that the second transducer detects from the second mechanical oscillator by the first signal before the signal is amplified. The third transducer detects position of the second mechanical oscillator in the second direction to output a third signal. The inverting amplification unit gives a control signal generated by inverting and simplifying the third signal to a second actuator that moves the second mechanical oscillator in the second direction.
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公开(公告)号：US11092440B2
公开(公告)日：2021-08-17
申请号：US16112961
申请日：2018-08-27
发明人： Ryunosuke Gando , Tamio Ikehashi , Etsuji Ogawa , Tetsuro Itakura , Yohei Hatakeyama , Yasushi Tomizawa
IPC分类号： G01C19/5719 , B81C1/00 , B81B3/00 , G01C19/5726 , G01C19/5755
摘要： According to one embodiment, a method for controlling a vibration device includes a movable body capable of vibrating in a first direction, and a catch and release mechanism capable of catching the movable body that freely vibrates in the first direction, by an electrostatic attractive force, and releasing the caught movable body to freely vibrate the movable body in the first direction, wherein in a condition that tc is a time from a rise start time point to a rise end time point of an applied voltage for catching the movable body that freely vibrates in the first direction, by the electrostatic attractive force, and td is a period of the free vibration in the first direction of the movable body, the time tc is longer than the time td.
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公开(公告)号：US20190235544A1
公开(公告)日：2019-08-01
申请号：US16125982
申请日：2018-09-10
发明人： Tetsuro ITAKURA , Yohei Hatakeyama
CPC分类号： G05F1/561 , H03F3/45183 , H03F2203/45156 , H03F2203/45601
摘要： According to one embodiment, a voltage-current conversion circuit includes an amplifier first, second and third inputs, a transistor including a first and second terminals, and a control terminal electrically connected to an output of the amplifier, and a serial connection including resistors connected in series between the first terminal and an ac ground, wherein a predetermined connecting point, among a first connecting point between the first terminal and the serial connection, a second connecting point between the ac ground and the serial connection, and one or more third connecting points between the resistors, is connected to the second input, and one of the connecting points other than the predetermined connecting point is connected to the third input.
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公开(公告)号：US10914586B2
公开(公告)日：2021-02-09
申请号：US16119696
申请日：2018-08-31
发明人： Yohei Hatakeyama , Tetsuro Itakura
IPC分类号： G01C19/5733 , B81B3/00
摘要： According to one embodiment, a vibration apparatus includes a coupled vibration mechanism which includes a plurality of mass parts and connects the mass parts, a catch and release mechanism which catches a vibrating mass parts to stop vibration and releases a caught mass parts to start vibration and a control circuitry configured to determine whether catching the mass parts by the catch and release mechanism is successful or failed and control the catch and release mechanism for raising possibility for catching the mass parts by the catch and release mechanism, if the catching the mass parts is determined as failed.
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公开(公告)号：US09225351B2
公开(公告)日：2015-12-29
申请号：US14538212
申请日：2014-11-11
CPC分类号： H03M1/002 , H03F3/45273 , H03F2200/267 , H03F2200/91 , H03F2203/45034 , H03M1/00 , H03M1/0604 , H03M1/12 , H03M1/365
摘要： In one embodiment, a current amplifier circuit includes a first transistor, a first resistor, a second transistor, a second resistor, a first passive element, and a control circuit. The first transistor has a first terminal, a second terminal, and a control terminal. The first resistor has one end connected to the first terminal of the first transistor. The second transistor has a first terminal, a second terminal, and a control terminal. The second resistor has one end connected to the first terminal of the second transistor. The first passive element is connected between the first terminals of the first transistor and the second transistor. The control circuit controls at least one of voltage at the control terminals of the first transistor and the second transistor such that the voltage at the other end of the first resistor becomes equal to the voltage at the other end of the second resistor.
摘要翻译： 在一个实施例中，电流放大器电路包括第一晶体管，第一电阻器，第二晶体管，第二电阻器，第一无源元件和控制电路。 第一晶体管具有第一端子，第二端子和控制端子。 第一电阻器的一端连接到第一晶体管的第一端子。 第二晶体管具有第一端子，第二端子和控制端子。 第二电阻器的一端连接到第二晶体管的第一端子。 第一无源元件连接在第一晶体管的第一端子和第二晶体管之间。 控制电路控制第一晶体管和第二晶体管的控制端的电压中的至少一个，使得第一电阻的另一端的电压变得等于第二电阻的另一端的电压。
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公开(公告)号：US11079228B2
公开(公告)日：2021-08-03
申请号：US16119744
申请日：2018-08-31
发明人： Yohei Hatakeyama , Tetsuro Itakura
IPC分类号： G01C19/5733 , G01C19/5726 , G01R33/00 , G01R33/02 , G01C19/5776
摘要： According to one embodiment, a detector is disclosed. The detector has a mechanism with first and second vibrators which vibrate in first and second directions. Circuits detect output first and second signals conforming to the detected positions of the vibrators. A detection circuit detects second signal using the first signal as a reference of synchronous detection and outputs a detection signal. A filter continues a moving average process on the detection signal for a period set based on the first signal. A controller circuitry controls the mechanism to causes the first vibrator to start vibrating in the first direction in synchronization with a clock signal.
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公开(公告)号：US20190204081A1
公开(公告)日：2019-07-04
申请号：US16112961
申请日：2018-08-27
发明人： Ryunosuke Gando , Tamio Ikehashi , Etsuji Ogawa , Tetsuro Itakura , Yohei Hatakeyama , Yasushi Tomizawa
IPC分类号： G01C19/5719 , B81B3/00 , B81C1/00
CPC分类号： G01C19/5719 , B81B3/0008 , B81B2201/0242 , B81C1/00976
摘要： According to one embodiment, a method for controlling a vibration device includes a movable body capable of vibrating in a first direction, and a catch and release mechanism capable of catching the movable body that freely vibrates in the first direction, by an electrostatic attractive force, and releasing the caught movable body to freely vibrate the movable body in the first direction, wherein in a condition that tc is a time from a rise start time point to a rise end time point of an applied voltage for catching the movable body that freely vibrates in the first direction, by the electrostatic attractive force, and td is a period of the free vibration in the first direction of the movable body, the time tc is longer than the time td.
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