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DESIGN AND DYNAMIC CIRCUITS OF PIEZOELECTRIC TRANSDUCERS FOR RECORDING PULSE-TYPE VIBRATION

机译:用于记录脉冲式振动的压电传感器的设计和动态电路

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Known designs and dynamic circuits of piezoelectric transducers for recording pulse-type vibration have been briefly reviewed. Their merits and shortcomings were discussed. Designs of piezoelectric accelerometers with various mechanical strain of a piezoelement (compression, tensile, shear, flexural strain or complexly stressed state of a piezoelement) and those of resonance and semiresonance sensors were also considered. Capabilities of the following dynamic circuits of transducers were analyzed: vibrating systems with localized elements having one or two degrees of freedom, vibrating systems with distributed parameters (with a sufficient number of degrees of freedom). To calculate the systems with distributed parameters, differential (wave) equations are used in partial derivatives having variables which characterize the dependence of studied values not only on time, but also on spacial position of all the system points. Analysis of design and dynamic circuits of piezoelectric transducers allowed to choose the circuits which are most optimal for the design of specific knock sensors and to provide some recommendations for further designing of different piezoelectric transducers for pulse -type vibration recording.
机译:已知的设计和用于记录脉冲型振动压电换能器的动态电路已经简要回顾。他们的优点和缺点进行了讨论。用压电元件的各种机械应变(压缩,拉伸,剪切,弯曲应变或压电元件的复杂应力状态)和那些谐振和semiresonance传感器的压电加速度计的设计还考虑。换能器的以下的动态电路的功能进行了分析:振动具有一个或两个自由度的局部元素,具有分布参数的振动系统(具有足够数量的自由度)的系统。与分布参数计算系统,微分(波)方程在具有表征研究值不仅在时间,而且对所有的系统点的空间位置的依赖性变量的偏导数使用。设计和压电换能器的动态电路的分析允许选择这对于特定的设计爆震传感器,并提供用于脉冲型振动记录不同压电换能器的进一步设计的一些建议最优的电路。

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