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公开(公告)号：US11654958B2
公开(公告)日：2023-05-23
申请号：US16599941
申请日：2019-10-11
申请人： Robert Bosch GmbH
发明人： Sebastian Mayer , Achim Frankovics
CPC分类号： B62D5/0481 , B62D3/04 , B62D5/0424 , B62D5/0463 , G01P3/465 , G01L5/221
摘要： An electric power steering system. One example includes a steering control, a steering shaft connected to the steering control, a steering rack, a sensor configured to detect an operating parameter of the steering rack or an electric motor, and an electronic controller. In one example, the electronic controller is configured to receive data indicative of the operating parameter from the sensor, compare the data to a known characteristic curve, the known characteristic curve indicating potential damage to a component of the electric power steering system, and when the data matches the known characteristic curve, output an indication to a user that potential damage has occurred to the component of the electric power steering system.
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公开(公告)号：US20220341344A1
公开(公告)日：2022-10-27
申请号：US17861418
申请日：2022-07-11
发明人： Antwan SHENOUDA , Ella YAKOBOV
摘要： Methods and systems for measuring an axial position of a rotating component of an engine are described herein. The method comprises obtaining a signal from a sensor coupled to the rotating component, the rotating component having a plurality of position markers distributed about a surface thereof, the position markers having an axially varying characteristic configured to cause a change in a varying parameter of the signal as a function of the axial position of the rotating component. Based on the signal, the method comprises determining a rotational speed of the rotating component from the signal, determining the varying parameter of the signal, and finding the axial position of the rotating component based on a known relationship between the axial position, the rotational speed, and the varying parameter of the signal.
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公开(公告)号：US11428703B2
公开(公告)日：2022-08-30
申请号：US16987945
申请日：2020-08-07
发明人： Gary L. Hess , Kirk A. Lillestolen
摘要： A speed detection device includes a comparator module, a sensor lead with a node connected to the comparator module, and a limit set module. The limit set module is connected to the sensor lead node and to the comparator by an upper limit lead and a lower limit lead to provide upper and lower limits to the comparator that vary according to amplitude variation in voltage applied to the sensor lead.
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公开(公告)号：US11313245B2
公开(公告)日：2022-04-26
申请号：US16747745
申请日：2020-01-21
申请人： ROLLS-ROYCE plc
发明人： Ralph W Hill
摘要： A monitoring system for monitoring one or more properties associated with a rotating shaft is provided. The system includes a first phonic wheel which is mounted coaxially to the shaft for rotation therewith, the first phonic wheel comprising a circumferential row of teeth. The system further includes a first sensor configured to detect the passage of the row of teeth of the first phonic wheel by generating a first alternating measurement signal. The system further includes a processor unit configured to determine the durations of successive first speed samples. Each first speed sample is a block of n successive cycles of the first alternating measurement signal, where n is an integer, and in which the beginning of each cycle is a zero-crossing point from the previous cycle and the end of each cycle is the corresponding zero-crossing point to the next cycle. At least one axial location of the first phonic wheel every mth tooth of the row of teeth of the first phonic wheel has a circumferential thickness which is different from that of the other teeth of the first phonic wheel, where m is an integer, m≠n, and m is neither a factor nor a multiple of n. When the first sensor is positioned at said axial location of the first phonic wheel and at any given rotational speed of the first phonic wheel, the durations of the successive first speed samples display a characteristic repeating pattern of longer and shorter sample durations relative to the average duration of the successive first speed samples. The amount by which the longer and shorter sample durations differ from the average duration is in proportion to the amount by which the circumferential thickness of the mth teeth differs from that of the other teeth at said axial location of the first phonic wheel. The processor unit monitors the properties associated with the rotating shaft from the characteristic repeating pattern.
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公开(公告)号：US20220107335A1
公开(公告)日：2022-04-07
申请号：US17063744
申请日：2020-10-06
申请人： Deere & Company
发明人： Kevin J. Johnson
摘要： One or more techniques and/or systems are disclosed for identifying a position of an engine, such as the position of the pistons, camshaft, and/or crank shaft, during engine starting. In some implementations, a magnetic reluctance sensor can detect the reluctance from a proximate timing gear, resulting in an input voltage signal indicative of the detected reluctance. The input voltage signal can be converted to a digital voltage signal. A trigger threshold can set to identify a detection window. During the detection window, a zero-cross of the input voltage signal is detected to identify an engine position, and any other zero-crossing signals are not identified, thereby mitigating the effects of noise at the slow starting speeds.
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公开(公告)号：US10761106B2
公开(公告)日：2020-09-01
申请号：US16438674
申请日：2019-06-12
发明人： Gary L. Hess , Kirk A. Lillestolen
摘要： A speed detection device includes a comparator module, a sensor lead with a node connected to the comparator module, and a limit set module. The limit set module is connected to the sensor lead node and to the comparator by an upper limit lead and a lower limit lead to provide upper and lower limits to the comparator that vary according to amplitude variation in voltage applied to the sensor lead.
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公开(公告)号：US20190006970A1
公开(公告)日：2019-01-03
申请号：US16008262
申请日：2018-06-14
摘要： In one embodiment, an apparatus includes a different amplifier. A node in the apparatus receives a motor-current signal and an output of the differential amplifier. The motor-current signal represents a motor current of a DC brush motor. Moreover, a first input of the differential amplifier is coupled to a node. The apparatus also includes a low-pass filter with an input receiving a motor-current signal and an output coupled to a second input of the differential amplifier. The apparatus additionally includes a comparator with a first input coupled to the output of the differential amplifier and a second input coupled to a referential voltage.
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8.发明授权Systems, methods, and devices for demodulating induction motor instantaneous rotor slot harmonic frequency 有权用于解调感应电动机瞬时转子槽谐波频率的系统，方法和装置公开(公告)号：US09231512B2
公开(公告)日：2016-01-05
申请号：US13388556
申请日：2011-10-15
申请人： Zhi Gao , Larry A. Turner , Benoit Leprettre , Roy S. Colby
发明人： Zhi Gao , Larry A. Turner , Benoit Leprettre , Roy S. Colby
CPC分类号： H02P23/14 , G01R31/343 , H02P21/18 , H02P2203/09 , H02P2207/01
摘要： A method and apparatus to dynamically and adaptively demodulate induction motor instantaneous rotor slot harmonic frequency for line-connected squirrel-cage polyphase induction motors. The instantaneous rotor slot harmonic frequency carries essential information on the instantaneous rotor speed. Based on a correlation between the motor's input power and its rotor slot harmonic frequency, a dynamically varying carrier frequency is computed and used in a rotor slot harmonic frequency detector. The rotor slot harmonic frequency detector is based on a superheterodyne principle. It contains a generalized linear-phase low-pass filter, whose bandwidth is estimated dynamically by a filter bandwidth estimator. The rotor slot harmonic frequency detector also includes a latency compensator, which receives the dynamically varying carrier frequency signal and synchronizes it with the output of a frequency demodulator.
摘要翻译： 一种用于线路连接的鼠笼式多相感应电动机动态和自适应地解调感应电动机瞬时转子槽谐波频率的方法和装置。 瞬时转子槽谐波频率载有瞬时转子转速的基本信息。 基于电机输入功率与转子槽谐波频率之间的相关性，计算出动态变化的载波频率并在转子槽谐波频率检测器中使用。 转子槽谐波检波器基于超外差原理。 它包含一个广义线性相位低通滤波器，其带宽由滤波器带宽估计器动态估计。 转子槽谐波频率检测器还包括延迟补偿器，其接收动态变化的载波频率信号并将其与频率解调器的输出同步。
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公开(公告)号：US09046544B2
公开(公告)日：2015-06-02
申请号：US13493754
申请日：2012-06-11
申请人： Stefan Mark Atay
发明人： Stefan Mark Atay
CPC分类号： G01P3/46 , G01P3/48 , Y10S388/904
摘要： A system for determining motor speed of a brush DC motor, including a first filter for receiving a substantially low frequency portion of a sensed current of the motor and parameters corresponding thereto, for calculating a speed estimate of the motor; an adaptive bandpass filter having a center frequency corresponding to the speed estimate of the first filter, for receiving the sensed current and substantially isolating a first periodic current fluctuation thereof. A detected frequency of the first periodic current fluctuation corresponds to the speed of the brush DC motor. The system may include a tracking frequency selection block for selecting a frequency component of the sensed current and providing same to the first filter, wherein the speed estimate is based in part upon the selected frequency component.
摘要翻译： 一种用于确定电刷直流电动机的电动机速度的系统，包括用于接收电动机的感测电流的基本上低频部分的第一滤波器及与其对应的参数的系统，用于计算电动机的速度估计; 具有对应于第一滤波器的速度估计的中心频率的自适应带通滤波器，用于接收感测的电流并且基本上隔离其第一周期性电流波动。 第一周期性电流波动的检测频率对应于电刷直流电动机的速度。 该系统可以包括用于选择感测电流的频率分量并将其提供给第一滤波器的跟踪频率选择块，其中速度估计部分地基于所选择的频率分量。
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公开(公告)号：US20140266156A1
公开(公告)日：2014-09-18
申请号：US13799637
申请日：2013-03-13
申请人： WOODWARD, INC.
发明人： Stephen B. Warner
IPC分类号： G01P3/46
摘要： In some aspects of what is described herein, an aircraft wheel speed sensor system includes a pair of conductors coupled between an electro-mechanical system and a control system. The control system is configured to apply a carrier voltage signal to the pair of conductors and to detect a modulated current signal on the pair of conductors. The electro-mechanical system includes a stator and a rotor that moves upon rotation of an aircraft wheel. The stator includes a winding disposed about the rotor. The winding is configured to produce the modulated current signal on the pair of conductors in response to movement of the rotor. The modulated current signal has a frequency that is dependent on a rotational speed of the aircraft wheel.
摘要翻译： 在这里描述的一些方面，飞行器轮速传感器系统包括耦合在机电系统和控制系统之间的一对导体。 控制系统被配置为将载波电压信号施加到该对导体并且检测该对导体上的调制电流信号。 机电系统包括定子和在飞行器轮的旋转时移动的转子。 定子包括围绕转子设置的绕组。 绕组被配置为响应于转子的移动而在该对导体上产生调制电流信号。 调制电流信号具有取决于飞行器轮的转速的频率。
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