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    • 5. 发明申请
    • MECHANICAL OSCILLATOR
    • 机械振荡器
    • WO2010082031A2
    • 2010-07-22
    • PCT/GB2010/000061
    • 2010-01-18
    • ISIS INNOVATION LIMITEDGREGG, John, FrancisKARENOWSKA, Alexy, Davison
    • GREGG, John, FrancisKARENOWSKA, Alexy, Davison
    • H03B5/12H03K17/95G01N3/38
    • G01N3/32G01N2203/0008G01N2203/0051G01N2203/0688G01Q60/52H03K17/95
    • A mechanical oscillator arrangement includes a mechanical structure having at least one transmission path through it, and at least one mode. A controller is provided with an amplifier and a feedback network which together provide a positive feedback oscillator for exciting a mode of the mechanical structure. 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 mechanical oscillator arrangement also includes an actuator which excites the mechanical structure based upon an output from the controller, and a sensor which senses vibrations in the mechanical structure and then outputs a signal to the controller based upon the sensed vibrations. Such a stabilized positive feedback arrangement is self exciting at the effective resonance frequency of the mechanical structure and avoids the need for an external fixed or variable frequency driver.
    • 机械振荡器装置包括具有穿过其的至少一个传输路径的机械结构以及至少一种模式。 控制器设置有放大器和反馈网络,其一起提供用于激励机械结构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。 机械振荡器装置还包括基于来自控制器的输出激励机械结构的致动器,以及感测机械结构中的振动,然后基于感测的振动将信号输出到控制器的传感器。 这种稳定的正反馈装置在机械结构的有效共振频率下是自激的,并且避免了对外部固定或可变频率驱动器的需要。