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    AN IMPROVED ADAPTIVE RESONATOR VIBRATION CONTROL SYSTEM
    65.
    发明申请
    AN IMPROVED ADAPTIVE RESONATOR VIBRATION CONTROL SYSTEM 审中-公开
    改进的自适应谐振器振动控制系统

    公开(公告)号：WO1993021687A1

    公开(公告)日：1993-10-28

    申请号：PCT/US1992003024

    申请日：1992-04-15

    Applicant: NOISE CANCELLATION TECHNOLOGIES, INC. ,  LANGLEY, Andrew

    Inventor： NOISE CANCELLATION TECHNOLOGIES, INC.

    IPC: H03B29/00

    CPC classification number: G10K11/178 ,  G10K2210/129 ,  G10K2210/3028 ,  G10K2210/3045 ,  G10K2210/32271 ,  G10K2210/501

    Abstract: This invention relates to control systems for the control of noise and vibration. Resonators (3) with adjustable properties are used in conjunction with an electronic control system (7) to change the noise or vibration in a structure (1). The invention relates particularly to the control of quasi-periodic noise or vibration comprising one or more harmonics by using one or more adaptive resonators (3).

    Abstract translation: 本发明涉及用于控制噪声和振动的控制系统。 与电子控制系统（7）结合使用具有可调特性的谐振器（3）来改变结构（1）中的噪声或振动。 本发明特别涉及通过使用一个或多个自适应谐振器（3）来控制包括一个或多个谐波的准周期性噪声或振动。

    ACTIVE VIBRATION CONTROL SYSTEM WITH MULTIPLE INPUTS
    66.
    发明申请
    ACTIVE VIBRATION CONTROL SYSTEM WITH MULTIPLE INPUTS 审中-公开
    具有多个输入的主动振动控制系统

    公开(公告)号：WO1992008224A1

    公开(公告)日：1992-05-14

    申请号：PCT/GB1991001850

    申请日：1991-10-22

    Applicant: NOISE CANCELLATION TECHNOLOGIES INC. ,  ROSS, Colin, Fraser ,  EATWELL, Graham, Paul

    Inventor： NOISE CANCELLATION TECHNOLOGIES INC.

    IPC: G10K11/16

    CPC classification number: G10K11/178 ,  G10K2210/3012 ,  G10K2210/3018 ,  G10K2210/3019 ,  G10K2210/3045 ,  G10K2210/3046

    Abstract: An active vibration control system having at least two input sensors generating first signals representative of a primary vibration field, a plurality of actuators driven by second signals and producing a secondary vibration field, monitoring sensors responsive to both the primary and secondary vibration fields and producing third signals, and a controller having one output waveform generator for each second signal and responsive to the first signals to generate respective second signals so that vibration is reduced in a chosen region excited by both the primary and secondary fields, the controller being adaptive to adjust the waveform generator outputs to maintain the reduced vibration in this region.

    Abstract translation: 一种主动振动控制系统，具有至少两个输入传感器，产生表示主振动场的第一信号，由第二信号驱动的多个致动器并产生二次振动场，响应于初级振动场和次级振动场两者而产生第三 信号，以及控制器，其具有用于每个第二信号的一个输出波形发生器，并响应于第一信号产生相应的第二信号，使得在由主场和辅助场两者激励的选定区域中的振动减小，所述控制器适于调整 波形发生器输出，以保持该区域的振动减小。

    INTEGRATED HYDRAULIC MOUNT FOR ACTIVE VIBRATION CONTROL SYSTEM
    67.
    发明申请
    INTEGRATED HYDRAULIC MOUNT FOR ACTIVE VIBRATION CONTROL SYSTEM 审中-公开
    用于主动振动控制系统的集成液压装置

    公开(公告)号：WO1991015687A1

    公开(公告)日：1991-10-17

    申请号：PCT/US1991002280

    申请日：1991-04-09

    Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

    Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  GOSSMAN, William, E. ,  BURKE, Michael, J.

    IPC: F16F15/04

    CPC classification number: F16F13/26 ,  F16F15/027

    Abstract: An active-controlled vibrating mount (142) permits static forces from a machine (23) to support while decoupling the transmission of dynamic vibrational forces. The mount provides a reduction of force losses from a first generating area (152) to a second force applying area (130, 132) to actively control vibrations of a vibrating element (23). These force losses are minimized due to minimization of the mass and velocity of fluid pumped by pumping the fluid through the short large cross-sectional area passageways (144, 146). The device provides for proper channeling of the forces to the vibrating element (23) in a uniaxial direction (x) and constrains the application of forces in non-working directions.

    Abstract translation: 主动控制的振动支架（142）允许来自机器（23）的静力支撑，同时解耦动态振动力的传递。 安装件减少了从第一产生区域（152）到第二施力区域（130,132）的力损失，以主动地控制振动元件（23）的振动。 由于通过将流体泵送通过短的大横截面通道（144,146）来泵送的流体的质量和速度的最小化，这些力损失被最小化。 该装置提供在单轴方向（x）上适当地将力引导到振动元件（23），并且限制非工作方向上的力的施加。

    IN-WIRE SELECTIVE CANCELLATION SYSTEM
    68.
    发明申请
    IN-WIRE SELECTIVE CANCELLATION SYSTEM 审中-公开
    内线选择性取消系统

    公开(公告)号：WO1991006148A1

    公开(公告)日：1991-05-02

    申请号：PCT/US1990005823

    申请日：1990-10-16

    Applicant: NOISE CANCELLATION TECHNOLOGIES, INC.

    Inventor： NOISE CANCELLATION TECHNOLOGIES, INC. ,  ZIEGLER, Eldon, W., Jr. ,  GARDNER, John, W.

    IPC: H03B01/00

    CPC classification number: H04B3/00 ,  H03H21/0001

    Abstract: An in-wire active cancelling system for cancelling undesirable repetitive signal components from a primary electronics signal comprising desired intelligent signal components and undesirable repetitive signal components. The primary electronic signal (101) is fed as an input to an electronic mixer (106). A second input of the electronic mixer (106) receives a repetitive cancelling signal generated by an active cancellation controller (103) to cancel the undesirable repetitive signal component from the primary signal (10) without interfering with passage of the primary signal intelligent signal components.

    ELECTROACOUSTIC TRANSDUCERS COMPRISING VIBRATING PANELS
    70.
    发明申请
    ELECTROACOUSTIC TRANSDUCERS COMPRISING VIBRATING PANELS 审中-公开
    包含振动面板的电声传感器

    公开(公告)号：WO1998028942A1

    公开(公告)日：1998-07-02

    申请号：PCT/GB1997003090

    申请日：1997-11-11

    Applicant: NOISE CANCELLATION TECHNOLOGIES, INC. ,  DAVIS, Gillian, Margaret ,  LUNDIE, Thomas ,  MCDONALD, Anthony, Malcolm

    Inventor： NOISE CANCELLATION TECHNOLOGIES, INC.

    IPC: H04R07/06

    CPC classification number: H04R7/06 ,  H04R1/26 ,  H04R1/403 ,  H04R17/00

    Abstract: An electroacoustic transducer comprises first and second panels (18A, 18B) each of which can be vibrated to generate sound, a frame (10) for mounting the panels, and first and second seals (20A, B) arranged between the frame and the edges of the panels for holding the panels in the frame, substantially isolating the frame acoustically from the edges of the panel, and substantially sealing the frame to the edges of the panel. One or more actuators (22), such as piezoelectric elements, are provided for receiving a driving signal and vibrating in response thereto, and the actuators are mechanically and acoustically coupled to the first panel at one or more locations remote from the edges of the first panel so that the first panel vibrates in response to vibration of the actuators. The second panel is mechanically and acoustically coupled to the first panel and/or to the actuators at one or more locations remote from the edges of the second panel so that the second panel also vibrates in response to vibration of the actuator means. The acoustic properties of the panels, the seals, the actuators and the couplings can be chosen to obtain a required frequency response from the transducer. Different embodiments are described in which the panels are driven in phase, in anti-phase, and in a more complex manner.

    Abstract translation: 电声换能器包括第一和第二面板（18A，18B），每个面板可以被振动以产生声音，用于安装面板的框架（10）以及布置在框架和边缘之间的第一和第二密封件（20A，B） 的面板用于将面板保持在框架中，基本上将框架与面板的边缘声学隔离，并且基本上将框架密封到面板的边缘。 提供一个或多个诸如压电元件的致动器（22），用于接收驱动信号并响应于此而致动振动，并且致动器在远离第一和第二部分的边缘的一个或多个位置处机械地和声学地耦合到第一面板 使得第一面板响应于致动器的振动而振动。 第二面板在远离第二面板的边缘的一个或多个位置处机械地和声学地耦合到第一面板和/或致动器，使得第二面板也响应于致动器装置的振动而振动。 可以选择面板，密封件，致动器和联接器的声学特性以从换能器获得所需的频率响应。 描述了不同的实施例，其中面板以同相，反相方式并且以更复杂的方式被驱动。

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