Brushless direct current electric motor and associated control method

    公开(公告)号:US12034346B2

    公开(公告)日:2024-07-09

    申请号:US17251283

    申请日:2019-06-27

    CPC classification number: H02K29/08 G01D5/145 G01P13/04 H02P6/16

    Abstract: A brushless DC motor (1) comprises a rotor comprising magnetic elements twining poles of the electric motor (1) and a control magnet comprising a number of pole pairs equal to three times that of the electric motor (1), a stator having electromagnetic excitation coils, at least one first and one second Hall-effect sensor (17, 17′) configured to detect predetermined angular positions of the rotor, and a control unit configured to apply a predetermined sequence of excitation signals to the coils, wherein the Hall-effect sensors are spaced apart by an angle greater than or equal to 10°, the first Hall-effect sensor (17) is used to determine the switching times of the excitation signals and the second Hall-effect sensor (17′) is used, in combination with the first Hall-effect sensor (17), to determine the direction of rotation of the rotor when the motor starts up, or vice versa.

    Systems and methods for employing a card rotation sequence to authenticate a user

    公开(公告)号:US11741202B2

    公开(公告)日:2023-08-29

    申请号:US17900679

    申请日:2022-08-31

    Abstract: Systems and methods for authenticating identification information are disclosed. For example, an Automated Teller Machine (ATM) may comprise a user interface. The user interface may comprise a card reader. The card reader may be configured for card rotation about an axis of a bank card. The user interface may be configured to receive card rotation input from a user. The ATM may comprise at least one memory storing instructions. The ATM may comprise at least one processor configured to execute the instructions to perform operations. The operations may comprise receiving identification information from the user. The operations may comprise receiving the card rotation input. The operations may comprise extracting a card rotation sequence from the card rotation input. When the card rotation sequence is within a predetermined threshold from a stored card rotation sequence corresponding to the identification information, the operations may comprise authenticating the user for an ATM operation.

    CENTRIFUGAL SEPARATOR HAVING A SYSTEM FOR DETECTING ROTATION

    公开(公告)号:US20180120341A1

    公开(公告)日:2018-05-03

    申请号:US15561848

    申请日:2016-03-21

    Inventor: Per KARLSSON

    Abstract: A centrifugal separator includes a frame and a drive member configured to rotate a rotating part in relation to the frame around an axis of rotation. The rotating part includes a spindle and a centrifuge rotor enclosing a separation space. The rotating part is supported by the frame by at least one bearing device. The centrifugal separator further includes a system for detecting rotation of the rotating part. The system includes at least one first type of sector each occupying a first length of the perimeter of a member arranged for rotation with the rotating part, and at least one second type of sector each occupying a second length of the perimeter of the member arranged for rotation. The at least one second type of sector is spaced apart from the at least one first type of sector. The second length is different compared to the first length. The at least one first and second types of sectors are irregularly spaced around the perimeter of the member arranged for rotation. The system further includes an inductive sensor arranged to detect the at least one first and second types of sectors and give rise to a binary pulse sequence upon rotation of the member arranged for rotation. The temporal widths of the binary pulses correspond to the lengths of the at least one first and the at least one second types of sectors, respectively.

    Absolute high resolution segment or revolution counter
    6.
    发明授权
    Absolute high resolution segment or revolution counter 有权
    绝对高分辨率片段或革命计数器

    公开(公告)号:US09200925B2

    公开(公告)日:2015-12-01

    申请号:US14073096

    申请日:2013-11-06

    CPC classification number: G01D5/2454 G01D5/145 G01D5/2455 G01P3/4815 G01P13/04

    Abstract: An absolute high resolution linear segment or revolution counter as a one-chip-solution with self sustained, economical intermediate solutions, preferably as absolute magnetic multi turn, having a Wiegand element for counting the revolutions or segments, respectively and for the energy supply of the counter and memory as well as processing electronics, whereby the additional sensor for the fine resolution and a μ-controller are part of the overall IC is disclosed.

    Abstract translation: 绝对高分辨率线性段或转速计数器作为具有自我维持,经济的中间解决方案的单芯片解决方案,优选为绝对磁性多圈,具有用于分别对转数或段进行计数的Wiegand元件,并且用于为 计数器和存储器以及处理电子器件,由此公开了用于精细分辨率的附加传感器和μ-控制器是整个IC的一部分。

    Optical Sensor
    7.
    发明申请
    Optical Sensor 有权
    光学传感器

    公开(公告)号:US20150006106A1

    公开(公告)日:2015-01-01

    申请号:US14489543

    申请日:2014-09-18

    Inventor: Hiroto Ishikawa

    Abstract: Three light emitting elements and one light receiving element are provided on a surface of a substrate. An arithmetic processing portion of a signal processing circuit separates three reflected light signals from a light detection signal from the light receiving element. The arithmetic processing portion calculates a square sum of the difference between the entire waveforms of the reflected light signals while the reflected light signal is shifted. The arithmetic processing portion calculates a phase difference between the reflected light signals on the basis of a shift amount with which the calculated value is minimum. On the basis of similar processing, the arithmetic processing portion calculates a phase difference between the reflected light signals. The arithmetic processing portion identifies a movement direction of a detection object on the basis of the phase differences.

    Abstract translation: 三个发光元件和一个光接收元件设置在基板的表面上。 信号处理电路的算术处理部分将来自光接收元件的光检测信号的三个反射光信号分离开。 算术处理部分在反射光信号偏移的同时计算反射光信号的整个波形之间的差的平方和。 运算处理部根据计算值为最小的偏移量来计算反射光信号之间的相位差。 在类似处理的基础上,算术处理部分计算反射光信号之间的相位差。 运算处理部基于相位差来识别检测对象的移动方向。

    Method for ascertaining a rotational direction of a rotating body, and wheel sensor module
    9.
    发明授权
    Method for ascertaining a rotational direction of a rotating body, and wheel sensor module 有权
    用于确定旋转体的旋转方向的方法以及车轮传感器模块

    公开(公告)号:US08751190B2

    公开(公告)日:2014-06-10

    申请号:US12924574

    申请日:2010-09-29

    CPC classification number: G01P3/22 B60C23/0416 G01P13/04

    Abstract: In a method for ascertaining a rotational direction of a rotating body, one rotational direction and one rotational speed value which indicates the rotational frequency of the rotating body are ascertained in each of multiple measurements. The rotational speed values of the multiple measurements are compared to each other, and a rotational direction of the rotating body is ascertained from the measured rotational directions and the comparison of the rotational speed values.

    Abstract translation: 在确定旋转体的旋转方向的方法中,在多个测量中的每一个中确定表示旋转体的旋转频率的一个旋转方向和一个旋转速度值。 将多次测量的转速值彼此进行比较,并根据测量的旋转方向和转速值的比较来确定旋转体的旋转方向。

    Device for measuring a fluid flow velocity and direction
    10.
    发明授权
    Device for measuring a fluid flow velocity and direction 有权
    用于测量流体流速和方向的装置

    公开(公告)号:US08280637B2

    公开(公告)日:2012-10-02

    申请号:US11993167

    申请日:2006-06-01

    CPC classification number: G01F1/103 G01P3/486 G01P5/07 G01P13/04

    Abstract: A device and method for measuring a fluid flow velocity and direction. The device includes: a modulator for modulating an incident signal from a fiber optical arrangement. The modulator includes an encoder resulting in a modulated signal having at least a first portion, a second portion and a third portion for each complete rotation of the encoder. The device further includes a processor for determining the fluid flow velocity and direction based on at least the first portion, the second portion and the third portion of the modulated signal. The method includes modulating an incident beam to have a first portion, a second portion and a third portion for each rotation of an encoder and processing the modulated signal to determine a fluid flow velocity and direction.

    Abstract translation: 一种用于测量流体流速和方向的装置和方法。 该装置包括:用于调制来自光纤配置的入射信号的调制器。 调制器包括编码器,其产生调制信号,该调制信号具有至少第一部分,第二部分和第三部分,用于编码器的每次完全旋转。 该装置还包括处理器,用于基于至少调制信号的第一部分,第二部分和第三部分来确定流体流速和方向。 该方法包括调制入射光束以具有用于编码器的每次旋转的第一部分,第二部分和第三部分,并且处理调制信号以确定流体流动速度和方向。

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