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公开(公告)号：US20170115388A1
公开(公告)日：2017-04-27
申请号：US15236650
申请日：2016-08-15
Applicant: Texas Instruments Incorporated
Inventor： Amardeep Sathyanarayana , David P. Magee , Anand G. Dabak , Srinath M. Ramaswamy
IPC: G01S15/32
CPC classification number: G01F1/667 , G01S15/104 , G01S15/107
Abstract: A transducer system with a transducer and circuitry for applying a waveform to excite the transducer during an excitation period. The applying circuitry also comprises circuitry for changing a frequency of the waveform during the excitation period.
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公开(公告)号：US20160066890A1
公开(公告)日：2016-03-10
申请号：US14944759
申请日：2015-11-18
Applicant: Texas Instruments Incorporated
Inventor： Udayan Dasgupta , David P. Magee , Murtaza Ali
CPC classification number: G01S15/8981 , A61B8/06 , A61B8/13 , A61B8/461 , A61B8/488 , A61B8/5207 , G01S7/52095 , G01S15/8979
Abstract: Methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. Ultrasound radio frequency RF data is demodulated using a nested processing loop including an inner loop and an outer loop. A plurality of Wall filter coefficients are fetched from ultrasound imaging system memory in a single memory access cycle. The plurality Wall filter coefficients are applied to a plurality of complex ultrasound data values in a single execution cycle. The Wall filtered ultrasound data are provided to a flow estimator.
Abstract translation: 本文公开了超声成像系统中彩色多普勒成像的方法。 使用包括内环和外环的嵌套处理环来解调超声射频RF数据。 在单个存储器访问周期中，从超声成像系统存储器中获取多个壁滤波器系数。 多个Wall滤波器系数在单个执行周期中被应用于多个复数超声数据值。 将经过滤波的超声波数据提供给流量估计器。
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公开(公告)号：US20150194914A1
公开(公告)日：2015-07-09
申请号：US14660363
申请日：2015-03-17
Applicant: Texas Instruments Incorporated
Inventor： Ashish S. Katariya , David P. Magee
IPC: H02P6/00
CPC classification number: H02P21/0003 , H02P6/28 , H02P21/13
Abstract: Input-output linearization (IOL) and extended state observer (ESO) techniques are applied to a Field Oriented Control (FOC) for Permanent Magnet Synchronous Motors (PMSM). In one such approach, at least one gain value is determined based at least in part on a given bandwidth value. Operating parameters for the motor are determined based on the at least one gain value and information from a current sensor regarding motor current. Control signals used to the control the motor are determined based on the determined operating parameters. Accordingly, automated control can be effected through setting a bandwidth value through the implementation of IOL and ESO techniques.
Abstract translation: 输入输出线性化（IOL）和扩展状态观察器（ESO）技术被应用于永磁同步电动机（PMSM）的场定向控制（FOC）。 在一种这样的方法中，至少部分地基于给定带宽值来确定至少一个增益值。 基于至少一个增益值和来自当前传感器的关于电动机电流的信息来确定电动机的操作参数。 基于确定的操作参数来确定用于控制电动机的控制信号。 因此，可以通过实施IOL和ESO技术来设置带宽值来实现自动化控制。
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公开(公告)号：US20140327380A1
公开(公告)日：2014-11-06
申请号：US14245206
申请日：2014-04-04
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： David P. Magee , Shih-Chin Yang
CPC classification number: H02P6/183 , H02P6/18 , H02P6/181 , H02P6/185 , H02P21/13 , H02P21/24 , H02P21/32
Abstract: A motor controller includes a square wave voltage generator and adding circuitry for adding the square wave voltage to a first drive voltage that is connectable to the stator windings of a motor. A current monitor for monitoring the input current to the motor as a result of the square wave voltage. A device for determining the position of the rotor based on the input current.
Abstract translation: 电动机控制器包括方波电压发生器和用于将方波电压加到可连接到电动机的定子绕组的第一驱动电压的附加电路。 电流监视器，用于监测由于方波电压而导致的电机输入电流。 一种用于基于输入电流确定转子的位置的装置。
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公开(公告)号：US20240201023A1
公开(公告)日：2024-06-20
申请号：US18385847
申请日：2023-10-31
Applicant: Texas Instruments Incorporated
Inventor： David P. Magee , James Kelly Griffin
IPC: G01K7/01
CPC classification number: G01K7/01
Abstract: An example apparatus includes: machine-readable instructions; and programmable circuitry configured to at least one of instantiate or execute the machine-readable instructions to: receive burst excitation information including a burst start frequency, a burst stop frequency, and a burst duration, the burst start frequency and the burst stop frequency defining a range of frequencies of the burst excitation information; generate first and second sub burst excitation information based on the burst excitation information, the first and second sub burst excitation information including a sub burst duration based on the burst duration, a temperature sense interval, and a temperature sense duration, the temperature sense interval being a time between temperature measurements, the temperature sense duration being a time of a temperature measurement; and generate an excitation signal responsive to the first and second sub burst excitation information and temperature measurements, the excitation signal having frequencies of the range of frequencies.
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Patent Agency Ranking
公开(公告)号：US20220120596A1
公开(公告)日：2022-04-21
申请号：US17563227
申请日：2021-12-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Amardeep Sathyanarayana , David P. Magee , Anand G. Dabak , Srinath M. Ramaswamy
Abstract: A transducer system with a transducer and circuitry for applying a waveform to excite the transducer during an excitation period. The applying circuitry also comprises circuitry for changing a frequency of the waveform during the excitation period.
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公开(公告)号：US11221411B2
公开(公告)日：2022-01-11
申请号：US15638255
申请日：2017-06-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Nirmal C. Warke , David P. Magee , Baher S. Haroun
Abstract: Described examples include an integrated circuit having an analog-to-digital converter operable to receive an input signal derived from a light signal and convert the input signal to a digital received signal, the analog-to-digital converter operable to receive the input signal during at least one window. The integrated circuit further has a receiver operable to receive the digital received signal, the receiver operable to determine a distance estimate of an object from which the light signal is reflected based on the digital received signal. In an example, the window locations are chosen to correspond to the locations of maximum slope in the signal.
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公开(公告)号：US11209297B2
公开(公告)日：2021-12-28
申请号：US15236650
申请日：2016-08-15
Applicant: Texas Instruments Incorporated
Inventor： Amardeep Sathyanarayana , David P. Magee , Anand G. Dabak , Srinath M. Ramaswamy
Abstract: A transducer system with a transducer and circuitry for applying a waveform to excite the transducer during an excitation period. The applying circuitry also comprises circuitry for changing a frequency of the waveform during the excitation period.
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公开(公告)号：US20190354135A1
公开(公告)日：2019-11-21
申请号：US16525185
申请日：2019-07-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： David P. Magee
IPC: G06F1/14
Abstract: A method includes reading first and second timer count values from a timer. The first timer count value is associated with a first time point, and the second timer count value is associated with a second time point. Also, the method includes calculating a difference between the first and the second timer count values, and determining whether the difference is within a range. The range is based on a desired executing frequency to perform a computing task, a variation of the desired executing frequency, and a timer frequency. Further, based on the difference not being within the range, the method includes setting an error flag value to be true and incrementing an error count value.
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公开(公告)号：US10071400B2
公开(公告)日：2018-09-11
申请号：US15186944
申请日：2016-06-20
Applicant: Texas Instruments Incorporated
Inventor： Yunhong Li , David P. Magee , Stephen John Fedigan
CPC classification number: B08B7/028 , G02B27/0006
Abstract: Disclosed examples include ultrasonic lens cleaning systems and driver circuits to clean a lens using four or more transducer segments mechanically coupled to the lens, in which the driver circuit provides phase shifted oscillating signals to the transducer segments to generate a mechanical traveling wave rotating around the center axis of the lens to vibrate the lens for improved ultrasonic cleaning.
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