【摘 要】
：
提出一种基于昆虫风速接受器的微谐振式仿生传感器,用以测量低速气体流动．由于设计的复杂性,使用有限元模拟对其进行评估．基于有限元模拟得到流体雷诺数与其绕流无限长梁的粘滞
【机 构】
：
中国科学院电子学研究所传感技术国家重点实验室,中国科学院电子学研究所传感技术国家重点实验室,中国科学院电子学研究所传感技术国家重点实验室 北京100080,北京100080,北京100080
论文部分内容阅读
提出一种基于昆虫风速接受器的微谐振式仿生传感器,用以测量低速气体流动．由于设计的复杂性,使用有限元模拟对其进行评估．基于有限元模拟得到流体雷诺数与其绕流无限长梁的粘滞系数的数值关系,从而有助于确定该传感器的线性工作范围．使用有限元模拟进行流体结构耦合分析,得到气体流速与固有频率偏移的数值关系．有限元模拟结果证实当雷诺数小于1时,传感器的输入与输出呈现线性关系,其灵敏度为1．6Hz/(cm·s~(-1)．
A microresonance biomimetic sensor based on insect wind speed acceptor is proposed to measure the low-velocity gas flow. Due to the complexity of the design, it is evaluated using finite element simulation. Based on the finite element simulation, the numerical relationship between the Reynolds number of fluid and the viscous coefficient of the inflow beam with infinite length is obtained, which helps to determine the linear working range of the sensor. Finite element simulation is used to analyze the coupling of fluid structure, and the numerical relationship between the gas velocity and the natural frequency deviation is obtained. Finite element simulation results show that when the Reynolds number is less than 1, the input and output of the sensor exhibit a linear relationship with a sensitivity of 1.6Hz / (cm · s ~ (-1)).
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