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    Angular velocity sensor, electronic apparatus, and moving object
    3.
    发明授权
    Angular velocity sensor, electronic apparatus, and moving object 有权

    公开(公告)号：US09599469B2

    公开(公告)日：2017-03-21

    申请号：US14528476

    申请日：2014-10-30

    Applicant: Seiko Epson Corporation

    Inventor： Ryuta Nishizawa ,  Takayuki Kikuchi

    IPC: G01C19/00 ,  G01C19/5607 ,  G01P3/02

    CPC classification number: G01C19/5607 ,  G01P3/02

    Abstract: In an angular velocity sensor, when a width of a detection frequency band is set to f1 [Hz], a resonance frequency in a first rotational vibration mode in which a base portion rotates and vibrates around a detection axis with respect to fixing units in association with the deformation of beam portions is set to f2 [Hz], a detuning frequency is set to f3 [Hz], and a resonance frequency in a second rotational vibration mode, having a phase opposite to that of the first rotational vibration mode, in which the base portion rotates and vibrates around the detection axis with respect to the fixing units in association with the deformation of the beam portions is set to f4, a relation of f1

    Angular velocity sensor, electronic apparatus, and moving object
    4.
    发明授权
    Angular velocity sensor, electronic apparatus, and moving object 有权
    角速度传感器，电子设备和移动物体

    公开(公告)号：US09587944B2

    公开(公告)日：2017-03-07

    申请号：US14528496

    申请日：2014-10-30

    Applicant: Seiko Epson Corporation

    Inventor： Ryuta Nishizawa ,  Keiji Nakagawa ,  Norifumi Shimizu

    IPC: G01C19/00 ,  G01C19/5614 ,  G01C19/5607 ,  G01P3/02

    CPC classification number: G01C19/5614 ,  G01C19/5607 ,  G01P3/02

    Abstract: An angular velocity sensor includes fixing units, a base portion, beam portions that support the base portion with respect to the fixing units, driving vibrating arms connected to the base portion, and detection vibrating arms connected to the base portion. When a width of a detection frequency band is set to f1 [Hz], a resonance frequency in a rotational vibration mode in which the base portion rotates and vibrates around a detection axis with respect to the fixing units in association with the deformation of the beam portions is set to f2 [Hz], and a detuning frequency is set to f3 [Hz], the relation of f1

    Abstract translation: 角速度传感器包括固定单元，基部，相对于固定单元支撑基部的梁部，连接到基部的驱动振动臂，以及连接到基部的检测振动臂。 当检测频带的宽度被设定为f1 [Hz]时，与旋转振动模式相关联的旋转振动模式中的相对于定影单元旋转并围绕检测轴线振动的共振频率 部分被设置为f2 [Hz]，并且失谐频率被设置为f3 [Hz]，满足f1

    Method for Determining a Synchronous Speed
    9.
    发明公开
    Method for Determining a Synchronous Speed 审中-公开

    公开(公告)号：US20240275320A1

    公开(公告)日：2024-08-15

    申请号：US18021877

    申请日：2021-08-12

    Applicant: KSB SE & CO. KGAA

    Inventor： Boris JANJIC ,  Tobias KLUNKE ,  Jochen MADES

    IPC: H02P23/14 ,  F04D1/00 ,  F04D15/00 ,  G01P3/02

    CPC classification number: H02P23/14 ,  F04D1/00 ,  F04D15/0088 ,  G01P3/02 ,  H02P2207/01

    Abstract: A method for determining a synchronous speed of an electric machine, in particular a speed-controlled asynchronous machine, in a work machine driven by the electric machine is provided. A control device is provided for controlling the speed of the electric machine. The method includes the steps of initiating a detection of at least one mechanical measurement variable in the electric machine and/or the driven work machine to obtain detection information specific to a rotation-induced sound of the electric machine and/or the driven work machine, carrying out a frequency analysis of the detection information to obtain a frequency spectrum of the detection information, carrying out a selection of at least one frequency range in the frequency spectrum on the basis of a clock frequency of the control device, carrying out an identification of at least one peak value in the frequency range to determine at least one frequency specific to the synchronous speed, and carrying out the determination of the synchronous speed using the at least one determined frequency.

    ESTIMATING MOTION OF WHEELED CARTS
    10.
    发明申请
    ESTIMATING MOTION OF WHEELED CARTS 有权
    估计轮子的运动

    公开(公告)号：US20170066464A1

    公开(公告)日：2017-03-09

    申请号：US15256300

    申请日：2016-09-02

    Applicant: Gatekeeper Systems, Inc.

    Inventor： Scott J. Carter ,  Stephen E. Hannah ,  Jesse M. James ,  Narayanan V. Ramanathan

    IPC: B62B5/04 ,  G01H11/08 ,  B60T7/12 ,  G05D1/02 ,  G01C21/20 ,  B62B3/14

    CPC classification number: B62B5/0423 ,  B60T7/12 ,  B60T7/18 ,  B62B3/14 ,  B62B3/1404 ,  B62B5/00 ,  G01C17/00 ,  G01C21/20 ,  G01C21/206 ,  G01H11/08 ,  G01P3/02 ,  G01P3/48 ,  G01S5/00 ,  G01S5/0268 ,  G01S5/14 ,  G01S11/06 ,  G05D1/028 ,  G06Q10/00 ,  G08B13/122 ,  G08B13/1427 ,  G08B13/181 ,  G08B13/2402 ,  G08B21/0261 ,  G08G1/00

    Abstract: Examples of systems and methods for locating movable objects such as carts (e.g., shopping carts) are disclosed. Such systems and methods can use dead reckoning techniques to estimate the current position of the movable object. Various techniques for improving accuracy of position estimates are disclosed, including compensation for various error sources involving the use of magnetometer and accelerometer, and using vibration analysis to derive wheel rotation rates. Also disclosed are various techniques to utilize characteristics of the operating environment in conjunction with or in lieu of dead reckoning techniques, including characteristic of environment such as ground texture, availability of signals from radio frequency (RF) transmitters including precision fix sources. Such systems and methods can be applied in both indoor and outdoor settings and in retail or warehouse settings.

    Abstract translation: 公开了用于定位可移动物体（例如，购物车）（例如，购物车）的系统和方法的示例。 这样的系统和方法可以使用航位推算技术来估计可移动物体的当前位置。 公开了用于提高位置估计精度的各种技术，包括对涉及使用磁力计和加速度计的各种误差源的补偿，以及使用振动分析来推导轮转速度。 还公开了各种技术，以结合或代替航位推算技术来利用操作环境的特性，包括诸如地面纹理的环境的特性，包括精确定位源的射频（RF）发射机的信号的可用性。 这些系统和方法可以应用于室内和室外设置以及零售或仓库设置。

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