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Conical shell vibration control with distributed piezoelectric sensor and actuator layer

机译：具有分布式压电传感器和致动器层的锥形壳振动控制

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摘要

In this study, a simply supported conical shell with distributed piezoelectric sensor and actuator layers is con sidered and the shell's vibration reduction is investigated. Four kinds of piezoelectric layer distribution which are upper circumferential, middle circumferential, lower circumferential, and longitudinal distribution are con sidered. The output voltage of each piezoelectric sensor patch which is proportional to the shell deformation is calculated. A PD controller is considered which magnifies sensor output voltage and applies it on the allocated piezoelectric actuator patch. By this method the amplitude of conical shell vibration reduced. The effect of a distributed sensor and actuator on the conical shell vibration is evaluated. Controller type, controller constant, sensor/actuator distributions effectiveness on the free vibration response, the frequency response is evaluated. The results show that derivative controllers can affect more on natural frequencies of conical shells and it can increase the damping of the structure. The circumferential distribution can change natural frequencies easily and it has more effects on the dynamic of the conical shell than longitudinal distribution, especially the lower circumferential distribution. The maximum voltage for the piezoelectric actuator patch is also calculated and better distribution with lower actuator voltage and higher vibration reduction is chosen.
机译：在该研究中，具有分布式压电传感器和致动器层的简单支撑的圆锥形壳体被配置，并且研究了壳的振动减小。具有上周向，中间圆周，下周向和纵向分布的四种压电层分布是Con Sidered的。计算与壳变形成比例的每个压电传感器贴片的输出电压。考虑PD控制器，其放大传感器输出电压并将其应用于分配的压电执行器贴片。通过这种方法，锥形壳振动的幅度降低。分布式传感器和致动器对锥形壳振动的影响进行了评估。控制器类型，控制器常数，传感器/执行器分布在自由振动响应上的有效性，评估频率响应。结果表明，衍生控制器可以影响锥形壳体的自然频率，并且可以增加结构的阻尼。圆周分布可以容易地改变自然频率，并且对锥形壳体的动态产生的效果比纵向分布，尤其是较低的圆周分布。还选择了压电致动器贴片的最大电压，并选择具有较低致动器电压和更高振动减少的更好的分布。

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