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31.发明申请公开(公告)号：US20180017672A1
公开(公告)日：2018-01-18
申请号：US15208948
申请日：2016-07-13
Applicant: Texas Instruments Incorporated
Inventor： Nirmal C. Warke , David P. Magee
CPC classification number: G01S13/08 , G01S7/4021 , G01S7/4052 , G01S7/4865 , G01S7/4915 , G01S7/497 , G01S7/52004 , G01S7/526 , G01S15/08 , G01S17/08 , G01S2007/4069
Abstract: Methods and apparatus to determine a distance to a target using coarse and fine delay estimation based on a narrowband transmit signal are disclosed. An example apparatus includes a transducer to receive a reference signal and a reflected signal, the reflected signal being the reference signal after being reflected of a target; a filter to generate a band-pass reference signal and a band-pass reflected signal by filtering (A) reference signal samples associated with the reference signal and (B) reflected signal samples associated with the reflected signal; a correlator to generate a first correlation by correlating the reference signal samples with the reflected signal samples and a second correlation by correlating the band-pass reference signal with the band-pass reflected signal; and a delay estimator to determine a distance to the target based on the first correlation (coarse delay) and the second correlation (fine delay) and output a signal including the distance to the target.
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32.发明申请公开(公告)号：US20180017671A1
公开(公告)日：2018-01-18
申请号：US15208945
申请日：2016-07-13
Applicant: Texas Instruments Incorporated
Inventor： Nirmal C. Warke , David P. Magee
CPC classification number: G01S13/08 , G01S7/4021 , G01S7/4052 , G01S7/4865 , G01S7/4915 , G01S7/497 , G01S7/52004 , G01S7/526 , G01S13/36 , G01S15/08 , G01S17/08 , G01S2007/4069
Abstract: Methods and apparatus to determine an accurate distance to a target using reference signal interpolation is disclosed. An example apparatus includes an interpolator to receive a first sample of a reference signal and a second sample of a reference signal; and interpolating a reconstructed reference signal sample based on the first and second samples, the reconstructed reference signal corresponding to the reference signal; a correlator to generate a plurality of phase-shifted, reconstructed reference signals; and correlate each of the plurality of phase-shifted, reconstructed reference signals with a reflected signal; and an optimal phase selector to determine an optimal phase based on the correlations and output a distance to a target based on the optimal phase.
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公开(公告)号：US20170357000A1
公开(公告)日：2017-12-14
申请号：US15619048
申请日：2017-06-09
Applicant: Texas Instruments Incorporated
Inventor： Terry A. Bartlett , Nirmal C. Warke , David P. Magee , Jeffrey Scott Farris , Patrick Ian Oden
CPC classification number: G01S17/102 , G01S7/4814 , G01S7/4816 , G01S7/4817 , G01S7/484
Abstract: In described examples, a spatial light modulator (SLM) receives light from a field of view. The SLM includes a two-dimensional array of picture elements in rows and columns. In response to a transmit scan beam that illuminates the field of view, a portion of the two-dimensional array is impacted by light reflected from a region of interest. The portion of the two-dimensional array is determined. Light is directed from the portion of the two-dimensional array to a photodiode. Light that impacts the two-dimensional array outside the portion is directed away from the photodiode.
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公开(公告)号：US20170329011A1
公开(公告)日：2017-11-16
申请号：US15396457
申请日：2016-12-31
Applicant: Texas Instruments Incorporated
Inventor： Nirmal C. Warke , David P. Magee , Baher S. Haroun
Abstract: In described examples, an integrated circuit includes a modulator configured to modulate a driving signal for an optical transmitter with a narrow band modulation signal in which the driving signal with a fixed duration is transmitted to the optical transmitter periodically. The integrated circuit also includes a demodulator configured to receive a signal from an optical receiver that is configured to receive a reflection of light transmitted by the optical transmitter off an object, the demodulator configured to discriminate the narrow band modulation signal and estimate a distance of the object using the narrow band modulation signal.
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公开(公告)号：US20170115255A1
公开(公告)日：2017-04-27
申请号：US15236666
申请日：2016-08-15
Applicant: Texas Instruments Incorporated
Inventor： Amardeep Sathyanarayana , David P. Magee , Anand G. Dabak , Srinath M. Ramaswamy
CPC classification number: G01N29/348 , G01F1/662 , G01F1/667 , G01F25/0007 , G01N29/024 , G01N29/11 , G01N29/12 , G01N29/30 , G01N29/326 , G01N29/343 , G01N29/345 , G01N29/346 , G01N29/36 , G01N29/4454 , G01N29/50 , G01N2291/011 , G01N2291/014 , G01N2291/02836 , G01N2291/044 , G01P5/245
Abstract: A transducer system. The system comprises a transducer and circuitry for applying an excitation waveform to excite the transducer during an excitation period. The circuitry for applying has: (i) circuitry for applying a first waveform at a first frequency; and (ii) circuitry for applying a second waveform at a second frequency differing from the first frequency.
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Patent Agency Ranking
公开(公告)号：US08981702B2
公开(公告)日：2015-03-17
申请号：US13833746
申请日：2013-03-15
Applicant: Texas Instruments Incorporated
Inventor： Ashish S. Katariya , David P. Magee
CPC classification number: H02P6/002 , H02P6/28 , H02P21/0003 , 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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37.发明申请公开(公告)号：US20140327379A1
公开(公告)日：2014-11-06
申请号：US14211208
申请日：2014-03-14
Applicant: Texas Instruments Incorporated
Inventor： Shih-Chin Yang , David P. Magee
CPC classification number: H02P6/183 , H02P6/18 , H02P6/181 , H02P6/185 , H02P21/13 , H02P21/24 , H02P21/32
Abstract: A position sensorless drive systems for a permanent magnet motors are disclosed. An embodiment includes a square wave voltage source connectable to an input of a permanent magnet motor. At least one current sensor is connectable to the motor, wherein the current sensor is configured to sense the current in at least one power line to the motor in response to the square wave input to the motor. The position of the rotor relative to the stator may be determined based on the current resulting from the square wave voltage.
Abstract translation: 公开了一种用于永磁电动机的无位置传感器驱动系统。 实施例包括可连接到永磁电动机的输入的方波电压源。 至少一个电流传感器可连接到电动机，其中电流传感器被配置为响应于输入到电动机的方波来感测到电动机的至少一条电力线中的电流。 转子相对于定子的位置可以基于由方波电压产生的电流来确定。
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公开(公告)号：US20140265952A1
公开(公告)日：2014-09-18
申请号：US13833746
申请日：2013-03-15
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ashish S. Katariya , David P. Magee
IPC: H02P21/00
CPC classification number: H02P6/002 , H02P6/28 , H02P21/0003 , 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：US12216270B2
公开(公告)日：2025-02-04
申请号：US17382128
申请日：2021-07-21
Applicant: Texas Instruments Incorporated
Inventor： David P. Magee , Nirmal C. Warke , Stephen Aldridge Shaw , Terry Alan Bartlett , Rick Oden
Abstract: An optical distance measuring system includes a first transmitter, a first solid state device, and a receiver. The first transmitter is configured to generate a first optical waveform. The first solid state device is configured to receive the first optical waveform and steer the first optical waveform toward a target object. The receiver is configured to receive the first optical waveform reflected off of the first target object and determine a distance to the first target object based on a time of flight from the transmitter to the first target object and back to the receiver.
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公开(公告)号：US12038314B2
公开(公告)日：2024-07-16
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
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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