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    • 3. 发明授权
    • Supersonic transducer
    • 超声波传感器
    • US3843897A
    • 1974-10-22
    • US34553073
    • 1973-03-28
    • TAGA ELECTRIC CO LTD
    • MISHIRO S
    • B06B1/02B06B1/06G01N29/24H04R17/08H04R17/00
    • B06B1/0644B06B1/0261B06B2201/57G01N29/24H04R17/08
    • A supersonic transducer including means for detecting its vibrating speed and for changing the frequency of the energizing current in response thereto. This invention utilizes the property that when an electrostrictive vibrator is vibrated resonantly, its dynamic admittance varies depending upon the difference in its stress distribution. The electrostrictive vibrator is divided into portions of large and small stresses to cancel the applied brake currents. Simultaneously, a signal is derived that is proportional to the difference of the dynamic currents so as to provide an effective energization by detecting the resonant frequency of the vibrator in order to automatically adjust the applied frequency of the supersonic transducer.
    • 一种超音速换能器,包括用于检测其振动速度并响应于此改变激励电流的频率的装置。 本发明利用了当电致伸缩振动子共振地振动时,其动态导纳根据其应力分布的差异而变化。 电致伸缩振动器分为大应力和小应力部分,以消除所施加的制动电流。 同时,导出与动态电流的差成比例的信号,以便通过检测振动器的谐振频率来提供有效的通电,以便自动调节超音速换能器的施加频率。
    • 5. 发明授权
    • Ultrasonic wave generating apparatus with voltage-controlled filter
    • 带电压滤波器的超声波发生装置
    • US4277758A
    • 1981-07-07
    • US65161
    • 1979-08-09
    • Shoji Mishiro
    • Shoji Mishiro
    • B06B1/02H03B5/32H03L7/02H03L7/00
    • H03L7/02B06B1/0253H03B5/323B06B2201/57
    • The present invention deals with an ultrasonic wave generating apparatus with voltage controlled filter, comprising a phase comparator which detects a shifted value from a predetermined phase difference between a driving voltage or a driving current of an ultrasonic transducer and a vibratory velocity signal, and a voltage-controlled band-pass filter which is controlled by the output of the phase comparator and which is provided in a feedback loop from the vibratory velocity signal to an input of a driving amplifier of the ultrasonic transducer, wherein the oscillating frequency is changed while following the resonant frequency of the ultrasonic transducer, so that stable operation is materialized without developing abnormal oscillation in subresonant frequencies and permitting very small following error.
    • 本发明涉及一种具有电压控制滤波器的超声波发生装置,包括:相位比较器,用于从超声换能器的驱动电压或驱动电流与振动速度信号之间的预定相位差检测偏移值,以及电压 控制的带通滤波器,其由相位比较器的输出控制,并且设置在从振动速度信号到超声波换能器的驱动放大器的输入的反馈回路中,其中,振荡频率在跟随 超声波换能器的谐振频率,使得稳定的操作实现,而不会在次谐波频率下产生异常振荡,并允许非常小的跟随误差。
    • 9. 发明授权
    • Supersonic vibrator with means for detecting vibrating speed
    • 超音速振动器,具有检测振动速度的装置
    • US4065687A
    • 1977-12-27
    • US680983
    • 1976-04-28
    • Shoji Mishiro
    • Shoji Mishiro
    • B06B1/02B06B1/06H04R17/08H01L41/04
    • B06B1/0644B06B2201/57H04R17/08
    • A supersonic transducer including means for detecting its vibrating speed and for changing the frequency of the energizing current in response thereto. This invention utilizes the property that when an electrostrictive vibrator is vibrated resonantly, its dynamic admittance varies depending upon the difference in its stress distribution. The electrostrictive vibrator is divided into portions of large and small stresses to cancel the applied brake currents. Simultaneously, a signal is derived that is proportional to the difference of the dynamic currents so as to provide an effective energization by detecting the resonant frequency of the vibrator in order to automatically adjust the applied frequency of the supersonic transducer.
    • 一种超音速换能器,包括用于检测其振动速度并响应于此改变激励电流的频率的装置。 本发明利用了当电致伸缩振动子共振地振动时,其动态导纳根据其应力分布的差异而变化。 电致伸缩振动器分为大应力和小应力部分,以消除所施加的制动电流。 同时,导出与动态电流的差成比例的信号,以便通过检测振动器的谐振频率来提供有效的通电,以便自动调节超音速换能器的施加频率。