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首页> 外文会议>ASME International Mechanical Engineering Congress and Exposition >AN INVESTIGATION OF THE DYNAMIC BEHAVIOR OF A PIEZOCERAMIC VIBRATOR CLAMPED WITH A RESONATE AMPLIFIER USING EQUIVALENT CIRCUITS
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AN INVESTIGATION OF THE DYNAMIC BEHAVIOR OF A PIEZOCERAMIC VIBRATOR CLAMPED WITH A RESONATE AMPLIFIER USING EQUIVALENT CIRCUITS

机译：用等效电路用谐振放大器夹紧压电母振动器动态行为的研究

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Using equivalent circuit analysis, the dynamic behavior of ultrasonic wave propagation in solid metals is investigated in this study, particularly in Langevin vibrators clamped with a resonant amplifier to enlarge the vibrating magnitude. For piezoelectric static feature, the piezoceramic impedance and equivalent circuits were obtained for the parameter model of the vibrator via the impedance analyzer. To analyze piezoceramic dynamic feature, the characteristic of motional current relative to frequency response was measured under practical operating voltage for the vibrator. Both static and dynamic features of a piezoceramic vibrator were compared to realize the difference and to build the dynamic equivalent circuit. The vibration measurement module of optical fiber was also employed to detect the maximum displacement of a vibrator with a resonant amplifier. The measured results demonstrate that the resonant frequency is moved to the lower frequency band. The new equivalent circuit model is proposed to further match the dynamic response and the stepped horn increases the vibrating amplitude by about seven times. This is the more efficient mechanical output for a vibrator.
机译：使用等效电路分析，在本研究中研究了固体金属中超声波传播的动态行为，特别是在Langevin振动器中夹紧谐振放大器以扩大振动幅度。对于压电静态特征，通过阻抗分析仪获得振动器参数模型的压电陶瓷阻抗和等效电路。为了分析压电传导动态特征，在振动器的实际工作电压下测量了相对于频率响应的运动电流的特性。比较压电陶瓷振动器的静态和动态特征，以实现差异和构建动态等效电路。还采用光纤的振动测量模块来检测振动器与谐振放大器的最大位移。测量结果表明谐振频率被移动到下频带。建议新的等效电路模型进一步匹配动态响应，阶梯喇叭将振动幅度增加约七次。这是振动器更有效的机械输出。

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