摘要
悬臂梁式压电振动发电机是一种新型的供电装置,可广泛应用于无线传感器网络节点进行供电。首先建立以悬臂梁为结构方式的压电振动换能器的模型;然后从遗传算法和田口稳健设计的理论方法出发,以输出平均功率为优化目标的对换能器进行稳健优化设计;接着以钽电容和稳压二极管为核心设计了换能器的能量收集电路,最后用优化后的参数制成样机进行测试。测试结果证明,该发电机完全能满足功耗为50μW的传感器节点的使用要求,验证了该研究方案的可行性。
Cantilever-type piezoelectric vibration transducers provides a new method tor power supply,which can be widely used in wireless sensor network nodes. A model was designed for cantilever-type piezoelectric vibration generators. Based on Taguchi robust design and genetic algorithm, a robust optimization method was developed with average power output as the robust optimization objectives. The energy collection circuit was designed using a tantalum capacitor and a Zener diode. Through testing the prototypes with optimized parameters, the transducer characteristics were obtained. Experimental results showed that the generator could completely meet the requirements of sensor nodes with a power consumption of 50 μW.
出处
《压电与声光》
CSCD
北大核心
2009年第4期510-513,共4页
Piezoelectrics & Acoustooptics
基金
国防基础科研基金资助项目(A3120061155)
西南科技大学引进人才启动基金资助项目(ZK043100)
关键词
压电发电机
稳健设计
梯度遗传算法
能量收集电路
piezoelectric generator
robust design
gradient genetic algorithm
energy collection circuit
