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首页> 外文期刊>Smart Materials & Structures >A novel multifunctional piezoelectric composite device for mechatronics systems by using one single PZT ring
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A novel multifunctional piezoelectric composite device for mechatronics systems by using one single PZT ring

机译：用一个PZT环的机电一体化系统新型多功能压电复合装置

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摘要

Piezoelectric ceramics are fascinating function materials and have good electromechanical coupling properties that can be used to develop various types of composite devices. Recently, piezoelectric composite devices with multifunctional demands have been extensively desired due to the remarkable developments of mechatronics systems. This paper focuses on developing a novel multifunctional composite device by using one single PZT ring, in which a piezoelectric actuator, a sensor and an energy harvester are embedded. The composite device is mainly composed of a rotary rotor and a piezoelectric vibrator, the piezoelectric vibrator is formed by a metal elastomer mechanically bonded together with a piezoelectric ceramic ring. The piezoelectric ceramic ring is polarized into three regions to produce the actuating, sensing and energy harvesting functions. The mathematical model of the composite device was derived and validated by experiment. A prototype was fabricated and the experiments including the mechanical, energetic and transient characteristics were performed and discussed. The results indicate that the composite device reaches the maximum torque, no-load speed and mechanical power of 0.674 Nm, 118 rpm and 2.65 W when it is excited by a voltage signal with amplitude 67 V and frequency 40 kHz; the results also show that the maximum extracted power of the composite device reaches 305 mW when the load resistance is 11.6 k omega, the composite device has a rapid response speed with startup time less than 5 ms and shutdown time less than 1 ms.
机译：压电陶瓷是迷人的功能材料，具有良好的机电偶联性能，可用于开发各种类型的复合装置。最近，由于机电一体化系统的显着发展，具有多功能需求的压电复合装置已经广泛。本文侧重于使用一个单一PZT环开发一种新型多功能复合装置，其中嵌入压电致动器，传感器和能量收割机。复合装置主要由旋转转子和压电振动器组成，压电振动器通过与压电陶瓷环机械地结合在一起的金属弹性体形成。压电陶瓷环被偏振成三个区域，以产生致动，感测和能量收集功能。通过实验导出和验证了复合装置的数学模型。制造原型，并进行并讨论包括机械，能量和瞬态特性的实验。结果表明，当通过具有幅度67 V的电压信号和40kHz的电压信号激励，复合装置达到0.674nm，118rpm和2.65w的最大扭矩，无负载速度和机械功率;结果还表明，当负载电阻为11.6kΩω时，复合装置的最大提取功率达到305mW，复合装置具有快速响应速度，启动时间小于5ms，关闭时间小于1 ms。

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