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公开(公告)号：US20220029505A1
公开(公告)日：2022-01-27
申请号：US17497110
申请日：2021-10-08
Inventor： Aleksey KHENKIN , Siddharth MARU , Tejasvi DAS , Emmanuel MARCHAIS , Vadim KONRADI , Viral PARIKH , Jon D. HENDRIX , Marco A. JANKO
Abstract: A system for detecting displacement of a movable member of an electromagnetic transducer having a magnetic coil-driven linear actuator with a static member and a movable mass mechanically coupled to the static member and having a back electromotive force present across terminals of a coil of the electromagnetic transducer is provided. The system may include a resistive-inductive-capacitive sensor comprising the coil, a driver configured to drive the resistive-inductive-capacitive sensor with a driving signal, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure one or more of phase information and amplitude information associated with the resistive-inductive-capacitive sensor and based on the one or more of phase information and amplitude information, determine a displacement of movable mass, wherein the displacement of the movable mass causes a change in an impedance of the resistive-inductive-capacitive sensor.
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公开(公告)号：US20210174777A1
公开(公告)日：2021-06-10
申请号：US16870401
申请日：2020-05-08
Inventor： Emmanuel MARCHAIS , Jon HENDRIX
Abstract: A method may include selecting, based on a condition of an electromagnetic load, a selected measurement technique from of a plurality of impedance measurement techniques for measuring an impedance of the electromagnetic load and performing the selected measurement technique to generate an estimate of the impedance of the electromagnetic load.
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13.发明申请公开(公告)号：US20200313654A1
公开(公告)日：2020-10-01
申请号：US16559238
申请日：2019-09-03
Inventor： Emmanuel MARCHAIS , Pablo PESO PARADA , Eric LINDEMANN
Abstract: A method for identifying a mechanical impedance of an electromagnetic load may include generating a waveform signal for driving an electromagnetic load and, during driving of the electromagnetic load by the waveform signal or a signal derived therefrom, receiving a current signal representative of a current associated with the electromagnetic load and a back electromotive force signal representative of a back electromotive force associated with the electromagnetic load. The method may also include implementing an adaptive filter to identify parameters of the mechanical impedance of the electromagnetic load, wherein an input of a coefficient control for adapting coefficients of the adaptive filter is a first signal derived from the back electromotive force signal and a target of the coefficient control for adapting coefficients of the adaptive filter is a second signal derived from the current signal.
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公开(公告)号：US20190302161A1
公开(公告)日：2019-10-03
申请号：US16267079
申请日：2019-02-04
Inventor： Zhong YOU , Siddharth MARU , Tejasvi DAS , Luke LAPOINTE , Eric J. KING , Anthony S. DOY , Srdjan MARJIANOVIC , Drew KINNEY , Matthew BEARDSWORTH , Emmanuel MARCHAIS
Abstract: A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor, wherein the displacement of the mechanical member causes a change in an impedance of the resistive-inductive-capacitive sensor.
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公开(公告)号：US20220344958A1
公开(公告)日：2022-10-27
申请号：US17395682
申请日：2021-08-06
Inventor： John L. MELANSON , Eric J. KING , Emmanuel MARCHAIS
IPC: H02J7/00
Abstract: A battery management system, may include an input configured to couple to a power supply, an output configured to couple to a battery, and battery management circuitry coupled between the power supply and the battery and configured to deliver electrical energy to the output at a significantly higher peak-to-average power ratio than receipt of electrical energy to the input.
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Patent Agency Ranking
公开(公告)号：US20220080457A1
公开(公告)日：2022-03-17
申请号：US17505199
申请日：2021-10-19
Inventor： Carl Lennart STÅHL , Emmanuel MARCHAIS , Anthony Stephen DOY , John L. MELANSON
Abstract: Driver circuitry for driving an electromechanical load with a drive output signal based on a digital reference signal at a first sample rate, the drive output signal inducing a first electrical quantity at the electromechanical load, the driver circuitry comprising: a function block configured, based on said first electrical quantity, to digitally determine at a second sample rate higher than the first sample rate an adjustment signal indicative of a second electrical quantity which would be induced at a target output impedance of the driver circuitry due to said first electrical quantity; and a driver configured to generate the drive output signal based on the reference signal and the adjustment signal to cause the drive output signal to behave as if an output impedance of the driver circuitry has been adjusted to comprise the target output impedance, wherein the first electrical quantity is a current and the second electrical quantity is a voltage, or vice versa.
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公开(公告)号：US20200309611A1
公开(公告)日：2020-10-01
申请号：US16569047
申请日：2019-09-12
Inventor： Emmanuel MARCHAIS , Kathryn Rose HOLLAND , Carl Lennart STÅHL , Eric LINDEMANN
Abstract: A system for performing force sensing with an electromagnetic load may include a signal generator configured to generate a signal for driving an electromagnetic load and a processing subsystem configured to monitor at least one operating parameter of the electromagnetic load and determine a force applied to the electromagnetic load based on a variation of the at least one operating parameter.
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公开(公告)号：US20200306795A1
公开(公告)日：2020-10-01
申请号：US16369556
申请日：2019-03-29
Inventor： Carl Lennart STÅHL , Emmanuel MARCHAIS , Anthony Stephen DOY , John L. MELANSON
Abstract: Driver circuitry for driving an electromechanical load with a drive output signal based on a digital reference signal at a first sample rate, the drive output signal inducing a first electrical quantity at the electromechanical load, the driver circuitry comprising: a function block configured, based on said first electrical quantity, to digitally determine at a second sample rate higher than the first sample rate an adjustment signal indicative of a second electrical quantity which would be induced at a target output impedance of the driver circuitry due to said first electrical quantity; and a driver configured to generate the drive output signal based on the reference signal and the adjustment signal to cause the drive output signal to behave as if an output impedance of the driver circuitry has been adjusted to comprise the target output impedance, wherein the first electrical quantity is a current and the second electrical quantity is a voltage, or vice versa.
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公开(公告)号：US20190257866A1
公开(公告)日：2019-08-22
申请号：US16121259
申请日：2018-09-04
Inventor： Gautham S. SIVASANKAR , Tejasvi DAS , Emmanuel MARCHAIS , Amar VELLANKI , Leyi YIN , John L. MELANSON , Venugopal CHOUKINISHI
Abstract: A method of determining a phase misalignment between a first signal generated from a first signal path and a second signal generated from a second signal path may include obtaining multiple samples of the first signal proximate to when the first signal crosses zero wherein the first signal can be approximated as linear; obtaining multiple samples of the second signal proximate to when the second signal crosses zero wherein the first signal can be approximated as linear; based on the multiple samples of the first signal, approximating a first time at which the first signal crosses zero; based on the multiple samples of the second signal, approximating a second time at which the second signal crosses zero; and determining the phase misalignment between the first signal and the second signal based on a difference between the first time and the second time.
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20.发明申请公开(公告)号：US20190137300A1
公开(公告)日：2019-05-09
申请号：US15926758
申请日：2018-03-20
Inventor： Amar VELLANKI , Vamsikrishna PARUPALLI , Emmanuel MARCHAIS , Zhong YOU
Abstract: A method may include receiving an analog modulated signal generated from a baseband signal modulated with a carrier signal wherein the baseband signal is representative of a capacitance of a capacitive sensor, converting the analog modulated signal into an equivalent digital modulated signal, demodulating the digital modulated signal to generate a demodulated digital signal representative of the capacitance of the capacitor wherein the demodulating is based, at least in part, on the carrier signal, and converting the demodulated digital signal into a digital output signal representative of a displacement of a plate of the capacitive sensor or a rate of displacement of a plate of the capacitive sensor.
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