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1.发明公开公开(公告)号：US20230147894A1
公开(公告)日：2023-05-11
申请号：US17690327
申请日：2022-03-09
Inventor： Ryan A. HELLMAN , Viral PARIKH , Siddharth MARU , Tejasvi DAS
CPC classification number: G01R35/005 , G01R27/02
Abstract: Circuitry comprising: a voltage monitoring path; a current monitoring path; a reference element of a predefined impedance; and processing circuitry, wherein in operation of the circuitry in a calibration mode of operation: the voltage monitoring path is operative to output a signal indicative of a voltage across the reference element in response to a reference signal applied to the reference element; the current monitoring path is operative to output a signal indicative of a current through the reference element in response to the reference signal; and the processing circuitry is operative to: receive the signal indicative of the voltage across the reference element and the signal indicative of the current through the reference element; generate an estimate of an impedance of the reference element; and determine a compensation parameter for an element of the circuitry for compensating for a difference between the estimate of the impedance and the predefined impedance of the reference element.
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公开(公告)号：US20230144960A1
公开(公告)日：2023-05-11
申请号：US17846832
申请日：2022-06-22
Inventor： Anand ILANGO , Siddharth MARU , Tejasvi DAS , John L. MELANSON
Abstract: A system may include amplifier circuitry configured to drive an electromagnetic load with a driving signal and a processing system communicatively coupled to the electromagnetic load and configured to compensate for current-sensing error of the processing system caused by feedback circuitry of the amplifier circuitry.
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公开(公告)号：US20220359113A1
公开(公告)日：2022-11-10
申请号：US17568248
申请日：2022-01-04
Inventor： Emmanuel A. MARCHAIS , Tejasvi DAS , Siddharth MARU
IPC: H01F7/18
Abstract: A system may include an electromagnetic actuator, a first coil configured to drive mechanical displacement of the electromagnetic actuator, a second coil configured to drive mechanical displacement of the electromagnetic actuator, and an inductance sensing subsystem having an inductance sensing path coupled to the first coil and the second coil. The inductance sensing subsystem may be configured to select one of the first coil and the second coil for driving mechanical displacement of the electromagnetic actuator, select the other of the first coil and the second coil as a sensing coil for sensing displacement of the electromagnetic actuator, determine a displacement of the electromagnetic actuator based on a measurement of estimated inductance of the sensing coil, and when switching selection of the sensing coil from the first coil to the second coil determine the displacement of the first coil based on a measured inductance of the first coil at approximately the time of switching selection, estimate state variables of the inductance sensing path to be used with the second coil based on the displacement, and apply the state variables to the inductance sensing path after switching selection of the sensing coil from the first coil to the second coil.
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公开(公告)号：US20220307872A1
公开(公告)日：2022-09-29
申请号：US17211073
申请日：2021-03-24
Inventor： Siddharth MARU , Josh SANZ-ROBINSON , Tejasvi DAS , John L. MELANSON
Abstract: A system may include a plurality of sensors configured to sense a physical quantity and a calibration subsystem configured to perform a calibration comprising: comparing a measured characteristic from each of at least two sensors of the plurality of sensors to determine a sensitivity drift of at least one sensor of the plurality of sensors; based on the measured characteristics of the at least two sensors and stored reference characteristics for the at least two sensors, calculating a normalization factor; and applying the normalization factor to the measured characteristic of the at least one sensor to ensure sensitivity of the plurality of sensors relative to each other remains approximately constant.
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公开(公告)号：US20220252428A1
公开(公告)日：2022-08-11
申请号：US17170174
申请日：2021-02-08
Inventor： Luke LAPOINTE , Siddharth MARU , Tejasvi DAS
Abstract: A system may include a plurality of sensors, a measurement circuit communicatively coupled to the plurality of sensors and configured to measure one or more physical quantities associated with the plurality of sensors, and a predictive optimization subsystem configured to detect an event associated with a first sensor of the plurality of sensors and responsive to the event, execute a predictive action with respect to one or more of the other sensors of the plurality of sensors.
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Patent Agency Ranking
公开(公告)号：US20220029617A1
公开(公告)日：2022-01-27
申请号：US17494479
申请日：2021-10-05
Inventor： Matthew BEARDSWORTH , Tejasvi DAS , Siddharth MARU , Luke LAPOINTE
IPC: H03K17/14 , H03K17/975 , H03K17/97
Abstract: A system may include a sensor configured to output a sensor signal indicative of a distance between the sensor and a mechanical member associated with the sensor, a measurement circuit communicatively coupled to the sensor and configured to determine a physical force interaction with the mechanical member based on the sensor signal, and a compensator configured to monitor the sensor signal and to apply a compensation factor to the sensor signal to compensate for changes to properties of the sensor based on at least one of changes in a distance between the sensor and the mechanical member and changes in a temperature associated with the sensor.
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公开(公告)号：US20210404901A1
公开(公告)日：2021-12-30
申请号：US17079709
申请日：2020-10-26
Inventor： Michael A. KOST , Tejasvi DAS , Marc J. KOBAYASHI , Siddharth MARU , Rahul GAWDE
Abstract: A method for determining sensor parameters of an actively-driven sensor system may include performing an initialization operation to establish a baseline estimate of the sensor parameters, obtaining as few as three samples of a measured physical quantity versus frequency for the actively-driven sensor system, performing a refinement operation to provide a refined version of the sensor parameters based on the as few as three samples, iteratively repeating the refinement operation until the difference between successive refined versions of the sensor parameters is below a defined threshold, and outputting the refined sensor parameters as updated sensor parameters for the actively-driven sensor system.
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公开(公告)号：US20210200316A1
公开(公告)日：2021-07-01
申请号：US17190708
申请日：2021-03-03
Inventor： Tejasvi DAS , Matthew BEARDSWORTH , Michael A. KOST , Gavin MCVEIGH , Hamid SEPEHR , Carl L. STÅHL
Abstract: Embodiments described herein relate to methods and apparatuses for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system. A controller comprises an input configured to receive an indication of activation or de-activation of an output of the vibrational output system; and an adjustment module configured to adjust the operation of the vibrational output system and/or the operation of the input sensor system based on the indication to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.
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公开(公告)号：US20210149538A1
公开(公告)日：2021-05-20
申请号：US16867223
申请日：2020-05-05
Inventor： Luke LAPOINTE , Tejasvi DAS , Siddharth MARU
IPC: G06F3/041 , G06F21/50 , G06F3/0488
Abstract: A method may include receiving an input signal from a force sensor configured to sense a force associated with a human interaction with a virtual button, comparing the input signal to at least one behavioral model, the at least one behavioral model comprising one or more parameters associated with a valid human interaction with the virtual button, and determining whether a valid human interaction with the virtual button occurred based on the comparing.
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公开(公告)号：US20200225786A1
公开(公告)日：2020-07-16
申请号：US16831323
申请日：2020-03-26
Inventor： Siddharth MARU , Tejasvi DAS , Luke LAPOINTE , Srdjan MARIJANOVIC , Zhong YOU , Drew KINNEY , Anthony S. DOY , Eric J. KING
Abstract: A system may include a resistive-inductive-capacitive sensor, a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to at a plurality of periodic intervals, 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. The system may also include a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency and a driving amplitude, wherein at least one of the driving frequency and the driving amplitude varies among the plurality of periodic intervals.
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