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    • 9. 发明授权
    • System and method for controlling an acoustic transducer
    • 用于控制声换能器的系统和方法
    • US08331196B2
    • 2012-12-11
    • US12755481
    • 2010-04-07
    • Nathan K. Weiner
    • Nathan K. Weiner
    • H04B1/02
    • G10K15/043B01F11/0283B06B1/0238H01L41/042
    • A system and method for controlling operation of a transducer circuit, e.g., including an acoustic transducer arranged to cause mixing, cavitation or other movement in a liquid contained in a vessel located remote from the transducer. A load current of a transformer used to generate a drive signal for the transducer may be controlled to vary sinusoidally, to vary between negative and positive values and such that the load current flows in a closed loop when a zero voltage bias is applied across the primary transformer winding, to have a reduced or eliminated 3rd harmonic mode and/or to vary between three discrete modes including a forward current mode, a zero voltage loop current mode, and a freewheel current mode. An inverter circuit may be used to control the load current, e.g., so that the load current flows in a closed loop during portions of the control cycle.
    • 用于控制换能器电路的操作的系统和方法,例如包括声换能器,该声换能器布置成在容纳在远离换能器的容器中的液体中引起混合,气蚀或其它运动。 可以控制用于产生用于换能器的驱动信号的变压器的负载电流,以正弦变化地变化,以在负值和正值之间变化,并且使得当零电压偏压施加在主电压上时,负载电流在闭环中流动 变压器绕组,具有减小或消除的三次谐波模式和/或在三个离散模式之间变化,包括正向电流模式,零电压回路电流模式和续流电流模式。 逆变器电路可以用于控制负载电流,例如,使得负载电流在控制周期的部分期间在闭环中流动。
    • 10. 发明申请
    • SYSTEM AND METHOD FOR CONTROLLING AN ACOUSTIC TRANSDUCER
    • 用于控制声学传感器的系统和方法
    • US20100260012A1
    • 2010-10-14
    • US12755481
    • 2010-04-07
    • Nathan K. Weiner
    • Nathan K. Weiner
    • H04B1/02
    • G10K15/043B01F11/0283B06B1/0238H01L41/042
    • A system and method for controlling operation of a transducer circuit, e.g., including an acoustic transducer arranged to cause mixing, cavitation or other movement in a liquid contained in a vessel located remote from the transducer. A load current of a transformer used to generate a drive signal for the transducer may be controlled to vary sinusoidally, to vary between negative and positive values and such that the load current flows in a closed loop when a zero voltage bias is applied across the primary transformer winding, to have a reduced or eliminated 3rd harmonic mode and/or to vary between three discrete modes including a forward current mode, a zero voltage loop current mode, and a freewheel current mode. An inverter circuit may be used to control the load current, e.g., so that the load current flows in a closed loop during portions of the control cycle.
    • 用于控制换能器电路的操作的系统和方法,例如包括声换能器,该声换能器布置成在容纳在远离换能器的容器中的液体中引起混合,气蚀或其它运动。 可以控制用于产生用于换能器的驱动信号的变压器的负载电流,以正弦变化地变化,以在负值和正值之间变化,并且使得当零电压偏压施加在主电压上时,负载电流在闭环中流动 变压器绕组,具有减小或消除的三次谐波模式和/或在三个离散模式之间变化,包括正向电流模式,零电压回路电流模式和续流电流模式。 逆变器电路可以用于控制负载电流,例如,使得负载电流在控制周期的部分期间在闭环中流动。