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Issue:
A New Method of Weak Frequency Variation Detection in Silicon-micro Resonant Sensor
Author(s):
ZHAO Xiangyang
,
SHI Baizhou
,
LIU Junhua
Pages:
57
-
58,91
Year:
2001
Issue:
z3
Journal:
CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT
Keyword:
硅微谐振传感器
;
混沌
;
共振锁频
;
柔性测量
;
Abstract:
由于硅微谐振传感器在感测压力、温度变化时存在频率变化较弱的特点,提高其灵敏度和测试分辨率显得尤为必要,所以提出利用系统从混沌状态到大周期状态转变时所表现出的共振锁频性质,进行了传感器微弱频率变化信号的仿真实验提取.将带通采样和降采样应用到信号预处理,建立了利用混沌的测试系统,同时指出该系统能实现传感器不同测试精度和灵敏度要求的柔性测量.
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