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    • 1. 发明申请
    • ACOUSTIC OSCILLATOR WITH ELECTRONIC FEED-BACK INCLUDING NON-LINEAR CONTROL
    • 具有电子反馈的声学振荡器包括非线性控制
    • WO2010082037A3
    • 2010-10-21
    • PCT/GB2010000069
    • 2010-01-18
    • ISIS INNOVATIONGREGG JOHN FRANCISKARENOWSKA ALEXY DAVISONCOUSSIOS CONSTANTIN-CASSIOS
    • GREGG JOHN FRANCISKARENOWSKA ALEXY DAVISONCOUSSIOS CONSTANTIN-CASSIOS
    • H03B5/12G01N29/036
    • H03B5/30
    • An acoustic oscillator arrangement includes an acoustic system having at least one acoustic transmission path through it, and at least one mode. The acoustic transmission path is of variable length. A controller is provided with an amplifier and a feedback network which together provide a positive feedback oscillator for exciting a mode of the acoustic system. The feedback network comprises a non linear amplitude control element (N-LACE), a frequency dependent gain element with an electronic transfer function, and a phase compensator. The acoustic oscillator arrangement also includes an acoustic transmitter which launches an acoustic signal into the acoustic system based upon an output from the controller, and an acoustic receiver which receives an acoustic signal from the acoustic system which is fed back to the controller. Such a stabilized positive feedback arrangement is self exciting at the effective resonance frequency of the acoustic system and avoids the need for an external fixed or variable frequency driver.
    • 声振荡器装置包括具有通过其的至少一个声传播路径的声学系统和至少一种模式。 声传播路径长度可变。 控制器设置有放大器和反馈网络,其一起提供用于激励声学系统的模式的正反馈振荡器。 反馈网络包括非线性幅度控制元件(N-LACE),具有电子传递函数的频率相关增益元件和相位补偿器。 声振荡器装置还包括声发射器,其基于来自控制器的输出将声信号发射到声系统中;以及声接收器,其接收来自声系的声信号,该声接收器被反馈到控制器。 这种稳定的正反馈装置在声学系统的有效谐振频率处是自激的,并且避免了对外部固定或可变频率驱动器的需要。
    • 9. 发明申请
    • ACOUSTIC OSCILLATOR
    • 声学振荡器
    • WO2010082037A2
    • 2010-07-22
    • PCT/GB2010/000069
    • 2010-01-18
    • ISIS INNOVATION LIMITEDGREGG, John, FrancisKARENOWSKA, Alexy, DavisonCOUSSIOS, Constantin-cassios
    • GREGG, John, FrancisKARENOWSKA, Alexy, DavisonCOUSSIOS, Constantin-cassios
    • H03B5/12G01N29/036
    • H03B5/30
    • An acoustic oscillator arrangement includes an acoustic system having at least one acoustic transmission path through it, and at least one mode. The acoustic transmission path is of variable length. A controller is provided with an amplifier and a feedback network which together provide a positive feedback oscillator for exciting a mode of the acoustic system. The feedback network comprises a non linear amplitude control element (N-LACE), a frequency dependent gain element with an electronic transfer function, and a phase compensator. The acoustic oscillator arrangement also includes an acoustic transmitter which launches an acoustic signal into the acoustic system based upon an output from the controller, and an acoustic receiver which receives an acoustic signal from the acoustic system which is fed back to the controller. Such a stabilized positive feedback arrangement is self exciting at the effective resonance frequency of the acoustic system and avoids the need for an external fixed or variable frequency driver.
    • 声振荡器装置包括具有通过其的至少一个声传播路径的声学系统和至少一种模式。 声传播路径长度可变。 控制器设置有放大器和反馈网络,其一起提供用于激励声学系统的模式的正反馈振荡器。 反馈网络包括非线性幅度控制元件(N-LACE),具有电子传递函数的频率相关增益元件和相位补偿器。 声振荡器装置还包括声发射器,该声发射器基于来自控制器的输出将声信号发射到声系统中;以及声接收器,其接收来自声系的声信号,所述声信号被反馈到控制器。 这种稳定的正反馈装置在声学系统的有效谐振频率处是自激的,并且避免了对外部固定或可变频率驱动器的需要。