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公开(公告)号：US20200276902A1
公开(公告)日：2020-09-03
申请号：US16877828
申请日：2020-05-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
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12.发明授权公开(公告)号：US10682675B2
公开(公告)日：2020-06-16
申请号：US15497624
申请日：2017-04-26
Applicant: Texas Instruments Incorporated
Inventor： David Patrick Magee , Stephen John Fedigan
Abstract: Lens cleaning systems, drivers and methods to detect faults or degradation in a lens cleaning system, including a controller to control a lens transducer drive signal frequency to vibrate the lens in a frequency range of interest and measure frequency response values according to driver feedback signals, and to compare the measured frequency response values to baseline frequency response values for a healthy system, and to selectively determine the existence of a fault or degradation in the lens cleaning system according to dissimilarities between the measured frequency response values and the baseline frequency response values.
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公开(公告)号：US10598926B2
公开(公告)日：2020-03-24
申请号：US15696752
申请日：2017-09-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Stephen John Fedigan , David Patrick Magee
Abstract: An apparatus for mitigating contamination of an optical device comprises an open-topped, closed-sided, and closed-bottomed housing cup partially defining a protected volume to enclose the optical device. A housing cap encloses a top of the housing cup and partially defines the protected volume. The housing cap includes a top collar having an open central aperture. The top collar includes at least one drain channel extending longitudinally downward into a top collar top surface and extending across the top collar top surface laterally outward from the central aperture. A top cover laterally spans the central aperture of the top collar. An interface structure circumscribes the top cover to suspend the top cover downwardly into the housing cup from the top collar. The interface structure prevents direct contact between the top cover and the top collar.
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公开(公告)号：US10574165B2
公开(公告)日：2020-02-25
申请号：US16288327
申请日：2019-02-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eric James Thomas , David Patrick Magee
Abstract: A method of determining angular position (θ) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
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公开(公告)号：US20190199259A1
公开(公告)日：2019-06-27
申请号：US16288327
申请日：2019-02-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Eric James Thomas , David Patrick Magee
Abstract: A method of determining angular position (θ) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
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Patent Agency Ranking
公开(公告)号：US20190113744A1
公开(公告)日：2019-04-18
申请号：US16163309
申请日：2018-10-17
Applicant: Texas Instruments Incorporated
Inventor： David Patrick Magee
Abstract: An oscillatory system comprises: a target member; a transducer coupled to the target member; and circuitry for applying a voltage to the transducer for imparting a vibrational force to the target member.
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公开(公告)号：US20180268815A1
公开(公告)日：2018-09-20
申请号：US15706128
申请日：2017-09-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Tarkesh Pande , Lorin Paul Netsch , David Patrick Magee
CPC classification number: G10L15/22 , G10L15/01 , G10L15/02 , G10L15/08 , G10L2015/025 , G10L2015/088 , G10L2015/221
Abstract: Systems and methods are provided for an automated speech recognition system. A microphone records a keyword spoken by a user, and a front end divides the recorded keyword into a plurality of subunits, each containing a segment of recorded audio, and extracts a set of features from each of the plurality of subunits. A decoder assigns one of a plurality of content classes to each of the plurality of subunits according to at least the extracted set of features for each subunit. A quality evaluation component calculates a score representing a quality of the keyword from the content classes assigned to the plurality of subunits.
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公开(公告)号：US20170341518A1
公开(公告)日：2017-11-30
申请号：US15680261
申请日：2017-08-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aravind Samba Murthy , David Patrick Magee
CPC classification number: B60L7/14 , B60L7/18 , B60L7/26 , B60L11/1803 , B60L15/2009 , B60L2220/12 , B60L2240/421 , B60L2240/423 , Y02T10/645 , Y02T10/646 , Y02T10/7005 , Y02T10/72 , Y02T10/7275
Abstract: A method of regenerative braking includes providing an electric motor including at least one stator and a rotor, a speed of the rotor, a motor controller that regulates a current level in the stator winding, a power inverter which controls an energy flow to the stator terminal, and an energy storage system (ESS) which exchanges energy with the motor. A battery management circuit is between the power inverter and the ESS, and a processor has an associated memory storing a regenerative braking (RB) algorithm. The RB algorithm during braking causes the motor controller to execute determining an RB torque value from the rotor speed that maximizes regenerative braking current, and the power inverter is used to redirect the RB current to maximize a power transfer from the motor to the ESS.
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公开(公告)号：US20160315572A1
公开(公告)日：2016-10-27
申请号：US15200294
申请日：2016-07-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： David Patrick Magee , Andre Veltman , Jorge Zambada
Abstract: A method of controlling an electric motor (motor) includes providing a processor having an associated memory storing a stator resistance (Rs) estimation (RSE) algorithm that is programmed to implement the RSE algorithm to execute steps including injecting a current waveform at an arbitrary frame of reference into the stator using a field-oriented-control (FOC) motor controller including an Id controller and an Iq controller, and measuring current and voltage values from the motor responsive to the injecting. The measured current and voltage values are then transformed into transformed current and voltage values in a d/q coordinate system. The transformed current and voltage values are low pass filtered to generate filtered d/q current and voltage values, and a value for Rs is estimated from the filtered d/q current and voltage values. The arbitrary frame of reference can be a time-varying frame of reference.
Abstract translation: 一种控制电动机（电动机）的方法包括提供一种处理器，该处理器具有存储定时电阻（Rs）估计（RSE）算法的相关存储器，该定时电阻（RS）估计（RSE）算法被编程以实现RSE算法，以执行包括以任意帧注入电流波形 使用包括Id控制器和Iq控制器的场定向控制（FOC）电动机控制器参考定子，并且响应于注射测量来自电动机的电流和电压值。 然后将测量的电流和电压值转换为d / q坐标系中的变换的电流和电压值。 转换的电流和电压值被低通滤波以产生滤波的d / q电流和电压值，并且根据滤波的d / q电流和电压值估计Rs的值。 任意的参照系可以是时变的参照系。
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公开(公告)号：US09413282B2
公开(公告)日：2016-08-09
申请号：US14486303
申请日：2014-09-15
Applicant: Texas Instruments Incorporated
Inventor： David Patrick Magee , André Veltman , Jorge Zambada
Abstract: A method of controlling an electric motor (motor) includes providing a processor having an associated memory storing a stator resistance (Rs) estimation (RSE) algorithm that is programmed to implement the RSE algorithm to execute steps including injecting a current waveform at an arbitrary frame of reference into the stator using a field-oriented-control (FOC) motor controller including an Id controller and an Iq controller, and measuring current and voltage values from the motor responsive to the injecting. The measured current and voltage values are then transformed into transformed current and voltage values in a d/q coordinate system. The transformed current and voltage values are low pass filtered to generate filtered d/q current and voltage values, and a value for Rs is estimated from the filtered d/q current and voltage values. The arbitrary frame of reference can be a time-varying frame of reference.
Abstract translation: 一种控制电动机（电动机）的方法包括提供一种处理器，该处理器具有存储定时电阻（Rs）估计（RSE）算法的相关存储器，该定时电阻（RS）估计（RSE）算法被编程以实现RSE算法，以执行包括以任意帧注入电流波形 使用包括Id控制器和Iq控制器的场定向控制（FOC）电动机控制器参考定子，并且响应于注射测量来自电动机的电流和电压值。 然后将测量的电流和电压值转换为d / q坐标系中的变换的电流和电压值。 转换的电流和电压值被低通滤波以产生滤波的d / q电流和电压值，并且根据滤波的d / q电流和电压值估计Rs的值。 任意的参照系可以是时变的参照系。
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