摘要
根据作用于圆窗的压电式振动声桥的工作原理,建立了压电振子与圆窗耦合的动力学模型,由此推导出该模型的电-机能量转化的传递函数。通过在Matlab环境中进行仿真试验,讨论了压电应变常数、振子支座质量及支座刚度等参数对传递函数的影响,并分别优化了各个参数。研究结果为新型振动压电植入振子的研制奠定了理论基础。
According to operating principle of piezoelectric vibrant soundbridge,a dynamic model with a piezoelectric transducer and a round window coupled in inner ear was built,and its electro-mechanical transfer function was deduced.Through simulating experiments in Matlab,the parameters influencing the system,such as,piezoelectric deformation constant,support mass and support stiffness were discussed and optimized.The results laid a theoretical basis for development of a new piezoelectric vibrant soundbridge.
出处
《振动与冲击》
EI
CSCD
北大核心
2009年第3期108-111,共4页
Journal of Vibration and Shock
基金
国家自然科学基金(10772121)资助项目
上海交通大学医工(理)交叉研究基金资助(YG2007MS14)
关键词
压电振子
声桥
力学建模
信号处理
听力辅助设备
piezoelectric transducer
vibrant soundbridge system
dynamic modeling
signal processing
hearing aid device
