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    Piezo speaker for improved passenger cabin audio systems
    1.
    发明授权
    Piezo speaker for improved passenger cabin audio systems 失效
    压电扬声器，改善客舱音响系统

    公开(公告)号：US06181797B2

    公开(公告)日：2001-01-30

    申请号：US09228767

    申请日：1999-01-09

    Applicant: Michael J. Parrella ,  Steven L. Machacek ,  Graham P. Eatwell

    Inventor： Michael J. Parrella ,  Steven L. Machacek ,  Graham P. Eatwell

    IPC: H04B100

    CPC classification number: H04R5/02

    Abstract: This invention outlines several applications of piezoelectric vibrators to produce quality flat panel speakers in passenger cabin applications. A system consisting of an audio amplifier and transformer is used to drive the piezo speaker. The electronics are packaged so that they fit in small modules that can be attached to a cabin structure to produce a speaker. The invention includes a variety of flat panel speaker designs, including one in which the existing structure is converted into a speaker, and thin membrane and or panels that are fitted with piezoelectric elements. A system consisting of cabin quieting and flat panel speakers is also discussed where the mid and high frequency audio is produced by panel speakers and the low frequency audio is produced from dynamic loudspeakers. The cabin systems discussed in this patent are applicable to automobiles, aircraft, trucks and buses.

    Abstract translation: 本发明概述了压电振动器在客舱应用中产生优质平板扬声器的几种应用。 由音频放大器和变压器组成的系统用于驱动压电扬声器。 电子设备被封装，使得它们适合于可以连接到机舱结构以产生扬声器的小模块中。 本发明包括各种平板扬声器设计，其中包括将现有结构转换成扬声器的设计，以及配有压电元件的薄膜和/或面板。 还讨论了由座舱扬声器和平板扬声器组成的系统，其中中频和高频音频由面板扬声器产生，低频音频由动态扬声器产生。 本专利所讨论的客舱系统适用于汽车，飞机，卡车和公共汽车。

    Piezo speaker for improved passenger cabin audio systems
    2.
    发明授权
    Piezo speaker for improved passenger cabin audio systems 失效
    压电扬声器，改善客舱音响系统

    公开(公告)号：US5901231A

    公开(公告)日：1999-05-04

    申请号：US533048

    申请日：1995-09-25

    Applicant: Michael J. Parrella ,  Steven L. Machacek ,  Graham P. Eatwell

    Inventor： Michael J. Parrella ,  Steven L. Machacek ,  Graham P. Eatwell

    IPC: H04R7/04 ,  H04R17/00 ,  H04B1/00 ,  H04R25/00

    CPC classification number: H04R17/00 ,  H04R7/04

    Abstract: This invention outlines several applications of piezoelectric vibrators to produce quality flat panel speakers in passenger cabin applications. A system consisting of an audio amplifier and transformer is used to drive the piezo speaker. The electronics are packaged so that they fit in small modules that can be attached to a cabin structure to produce a speaker. The invention includes a variety of flat panel speaker designs, including one in which the existing structure is converted into a speaker, and thin membrane and or panels that are fitted with piezoelectric elements. A system consisting of cabin quieting and flat panel speakers is also discussed where the mid and high frequency audio is produced by panel speakers and the low frequency audio is produced from dynamic loudspeakers. The cabin systems discussed in this patent are applicable to automobiles, aircraft, trucks and buses.

    Abstract translation: 本发明概述了压电振动器在客舱应用中产生优质平板扬声器的几种应用。 由音频放大器和变压器组成的系统用于驱动压电扬声器。 电子设备被封装，使得它们适合于可以连接到机舱结构以产生扬声器的小模块中。 本发明包括各种平板扬声器设计，其中包括将现有结构转换成扬声器的设计，以及配有压电元件的薄膜和/或面板。 还讨论了由座舱扬声器和平板扬声器组成的系统，其中中频和高频音频由面板扬声器产生，低频音频由动态扬声器产生。 本专利所讨论的客舱系统适用于汽车，飞机，卡车和公共汽车。

    Control system for periodic disturbances
    3.
    发明授权
    Control system for periodic disturbances 失效
    周期性扰动控制系统

    公开(公告)号：US5638022A

    公开(公告)日：1997-06-10

    申请号：US347421

    申请日：1994-12-02

    Applicant: Graham P. Eatwell

    Inventor： Graham P. Eatwell

    IPC: G10K11/178 ,  G10K11/16

    CPC classification number: G10K11/1784 ,  G10K2210/121 ,  G10K2210/3028 ,  G10K2210/3032 ,  G10K2210/3045

    Abstract: A control system for controlling periodic disturbances employing a delayed inverse filter (5), a variable delay (6), a controller, a system model (4) and a comb filter (9).

    Abstract translation: PCT No.PCT / US92 / 05229 Sec。 371日期1994年12月2日第 102（e）日期1994年12月2日PCT提交1992年6月25日PCT公布。 出版物WO94 / 00930 日期1994年1月6日采用延迟逆滤波器（5），可变延迟（6），控制器，系统模型（4）和梳状滤波器（9）来控制周期性干扰的控制系统。

    Control system using harmonic filters
    6.
    发明授权
    Control system using harmonic filters 失效
    控制系统采用谐波滤波器

    公开(公告)号：US5469087A

    公开(公告)日：1995-11-21

    申请号：US347422

    申请日：1994-12-02

    Applicant: Graham P. Eatwell

    Inventor： Graham P. Eatwell

    IPC: G10K11/178 ,  H04B1/10

    CPC classification number: G10K11/178 ,  G10K2210/121 ,  G10K2210/3028 ,  G10K2210/3032 ,  G10K2210/3051 ,  G10K2210/512

    Abstract: A harmonic filter for active or adaptive noise attenuation control systems for obtaining the complex amplitude of a single harmonic component from a signal which contains one or more harmonic components.

    Abstract translation: PCT No.PCT / US92 / 05228 Sec。 371日期1994年12月2日第 102（e）日期1994年12月2日PCT提交1992年6月25日PCT公布。 第WO94 / 00911号公报 日期1994年1月6日。一种用于主动或自适应噪声衰减控制系统的谐波滤波器，用于从包含一个或多个谐波分量的信号获得单个谐波分量的复振幅。

    Method and apparatus for dynamical system analysis
    7.
    发明授权
    Method and apparatus for dynamical system analysis 失效
    动力系统分析方法与装置

    公开(公告)号：US06208949B1

    公开(公告)日：2001-03-27

    申请号：US09108253

    申请日：1998-07-01

    Applicant: Graham P. Eatwell

    Inventor： Graham P. Eatwell

    IPC: G06F1900

    CPC classification number: G05B5/01 ,  G05B23/0256

    Abstract: A method and apparatus are provided for simultaneously characterizing the disturbance of a dynamical system and the dynamic response model of the system. The disturbance is characterized by a sum of reference signals weighted by disturbance parameters. The dynamic response model is similarly characterized by a set of response parameters, which model the relationship between a set of test signals and the response to these test signals. The disturbance parameters and the response parameters are estimated jointly to provide a characterization of the dynamical system. This estimation is achieved by sensing the system at one or more locations to obtain a sensed signal, obtaining reference signals related to the disturbances, synthesizing an estimate of the sensed signal from the reference signals, the test signals, the disturbance parameters and the response parameters, and jointly adjusting the disturbance parameters and the response parameters according to the difference between the synthesized signal and the sensed signal. The characterization may be incorporated in systems or methods for control or monitoring of dynamical systems.

    Abstract translation: 提供了一种用于同时表征动力系统的干扰和系统的动态响应模型的方法和装置。 扰动的特征在于由干扰参数加权的参考信号的总和。 动态响应模型的特征在于一组响应参数，其对一组测试信号与对这些测试信号的响应之间的关系进行建模。 扰动参数和响应参数联合估计，以提供动力系统的特征。 该估计通过在一个或多个位置处感测系统以获得感测信号，获得与干扰有关的参考信号，从参考信号合成感测信号的估计，测试信号，干扰参数和响应参数来实现 并根据合成信号与感测信号之间的差异共同调整干扰参数和响应参数。 表征可以并入用于控​​制或监测动力系统的系统或方法中。

    Sampled-data filter with low delay
    8.
    发明授权
    Sampled-data filter with low delay 失效
    具有低延迟的采样数据滤波器

    公开(公告)号：US5652770A

    公开(公告)日：1997-07-29

    申请号：US403908

    申请日：1995-03-21

    Applicant: Graham P. Eatwell

    Inventor： Graham P. Eatwell

    IPC: H03H17/02 ,  G06J1/00

    CPC classification number: H03H17/0283

    Abstract: A filter system with low throughput delay having at least two parallel filters, either sampled-data or continuous, wherein one of the filters has a low throughput delay in comparison with the other filters.

    Abstract translation: PCT No.PCT / US92 / 07802 Sec。 371日期1995年3月21日 102（e）1995年3月21日PCT PCT 1992年9月21日PCT公布。 公开号WO94 / 07212 日期1994年3月31日具有低通量延迟的滤波器系统具有至少两个并行滤波器，采样数据或连续的滤波器系统，其中一个滤波器与其它滤波器相比具有低吞吐量延迟。

    Active control of machine performance
    9.
    发明授权
    Active control of machine performance 失效
    主动控制机器性能

    公开(公告)号：US5431008A

    公开(公告)日：1995-07-11

    申请号：US920495

    申请日：1992-08-20

    Applicant: Colin F. Ross ,  Andrew J. Langley ,  Graham P. Eatwell

    Inventor： Colin F. Ross ,  Andrew J. Langley ,  Graham P. Eatwell

    IPC: F01B25/02 ,  F01N1/06 ,  F02B27/00 ,  F02B27/06 ,  F02M35/12 ,  F02C9/00

    CPC classification number: F01N1/065 ,  F02B27/001 ,  F02M35/1038 ,  F02M35/125 ,  Y02T10/146

    Abstract: A control system is described for improving continuous dynamical control on the pressure in the outlet or inlet system (3) or both of a machine (1) in order to control the performance of the machine. The system comprises an actuator (4) for varying the pressure in the selected system, a sensor (8) for monitoring the operation of the machine and producing a signal indicative thereof, and control means (5) responsive to the sensor signals for driving the actuator, wherein the control means operates to adjust the machine performance according to predetermined data, to optimise the machine performance. The data may be in a memory (look-up table) or the control means may operate in accordance with an algorithm. A second sensor may be provided to generate a signal indicative of sound produced by one or other or both of the outlet and inlet systems to produce signals to enable the control means simultaneously to reduce noise generated by the machine as well as to improve the performance of the machine by active feedback.

    Abstract translation: PCT No.PCT / GB91 / 00266 Sec。 371日期：1992年8月20日 102（e）日期1992年8月20日PCT 1991年2月2日PCT PCT。 公开号WO91 / 13243 日期1991年9月5日。描述了一种控制系统，用于改进机器（1）的出口或入口系统（3）或两者的压力的连续动态控制，以便控制机器的性能。 该系统包括用于改变所选择的系统中的压力的​​致动器（4），用于监测机器的操作并产生指示其的信号的传感器（8），以及响应于传感器信号驱动 致动器，其中控制装置根据预定数据操作以调节机器性能，以优化机器性能。 数据可以在存储器（查找表）中，或者控制装置可以根据算法进行操作。 可以提供第二传感器以产生指示由出口和入口系统中的一个或两个或两个出口和入口系统产生的声音的信号，以产生信号，以使得控制装置能够同时降低由机器产生的噪声以及改善 该机通过主动反馈。

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