公开(公告)号：US20200174251A1

公开(公告)日：2020-06-04

申请号：US16781506

申请日：2020-02-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： STEPHEN JOHN FEDIGAN ,  DAVID PATRICK MAGEE

IPC: G02B27/00 ,  G03B17/08 ,  G03B17/02

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. 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.

公开(公告)号：US20180221921A1

公开(公告)日：2018-08-09

申请号：US15605463

申请日：2017-05-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： DAVID PATRICK MAGEE ,  STEPHEN JOHN FEDIGAN

IPC: B08B7/02 ,  G01N29/34 ,  G01R31/34 ,  G01K13/00 ,  H01L41/09 ,  B60S1/56

Abstract: A control system for cleaning and monitoring a sensor assembly disposed externally on a vehicle is provided and includes a contaminant detection/identification sub-system that measures a resonant frequency of the sensor assembly to detect contaminants disposed on an exposed surface of the sensor assembly. A cleaning sub-system is provided and includes cleaning modes that expel the contaminants from the exposed surface of the sensor assembly. A temperature monitoring device monitors a temperature of an actuator disposed in the sensor assembly and a fault detection device detects faults in the sensor assembly.

公开(公告)号：US20180224656A1

公开(公告)日：2018-08-09

申请号：US15696752

申请日：2017-09-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： STEPHEN JOHN FEDIGAN ,  DAVID PATRICK MAGEE

IPC: G02B27/00 ,  H04N5/225

CPC classification number: G02B27/0006 ,  H04N5/2252

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.

公开(公告)号：US20170371154A1

公开(公告)日：2017-12-28

申请号：US15377492

申请日：2016-12-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： STEPHEN JOHN FEDIGAN ,  DAVID PATRICK MAGEE

IPC: G02B27/00 ,  G03B17/02

CPC classification number: G02B27/0006 ,  G03B17/02 ,  G03B17/08

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. 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.

公开(公告)号：US20150222217A1

公开(公告)日：2015-08-06

申请号：US14173589

申请日：2014-02-05

Applicant: Texas Instruments Incorporated

Inventor： STEPHEN JOHN FEDIGAN

IPC: H02P31/00

CPC classification number: H02P31/00 ,  H02P27/08

Abstract: A motor driver combination for controlling a travelling wave motor includes a pre-driver including a microcontroller unit (MCU) chip including a plurality of high-resolution pulse width modulation (HRPWM) generators providing a frequency resolution better than ten Hz. A digital bus is for transferring digital words received from a controller in a servo and velocity control block to the HRPWM generators, where the digital words provide travelling wave motor operating performance information from the motor during its operation. A clock oscillator providing an accuracy of at least eighty (80) parts per million (ppm) is coupled to or provided by the MCU chip for each of the high-resolution PWM generators. A motor driver includes a plurality of power drivers for providing phased outputs for driving the travelling wave motor including a plurality of inputs coupled to outputs of the plurality of HRPWM generators. The travelling wave motor can be an ultrasonic motor.

Abstract translation: 用于控制行波电动机的电动机驱动器组合包括预驱动器，其包括具有提供比10Hz的频率分辨率的多个高分辨率脉宽调制（HRPWM）发生器的微控制器单元（MCU）芯片。 数字总线用于将从伺服和速度控制块中的控制器接收到的数字字传送到HRPWM发生器，其中数字字在其操作期间提供来自电动机的行波电动机操作性能信息。 提供至少八十（80）百万分之一（ppm）的精度的时钟振荡器与每个高分辨率PWM发生器的MCU芯片耦合或提供。 电动机驱动器包括多个电源驱动器，用于提供用于驱动行波电动机的相位输出，该电动机包括耦合到多个HRPWM发生器的输出的多个输入。 行波马达可以是超声波马达。