ZHANG Yun-kui, CUI Feng, WAN Zhen, et al. Design of detection and control circuits for capacitive microaccelerometer based on non-silicon MEMS[J]. 2012, 31(2): 90-92+95.
ZHANG Yun-kui, CUI Feng, WAN Zhen, et al. Design of detection and control circuits for capacitive microaccelerometer based on non-silicon MEMS[J]. 2012, 31(2): 90-92+95. DOI: 10.13873/j.1000-97872012.02.010.
To improve the anti-over loading capability of MEMS microaccelerometer
a new non-silicon MEMS capacitive microaccelerometer based on UV-LIGA technology and its detection and control circuits of differential capacitance based on phase-sensitive demodulation is designed.The detection channel mainly consists of charge integrated preamplifier
band-pass filter
phase-sensitive demodulator
low-pass filter and voltage conversion circuits.The feedback channel consists of low-pass filter and adder circuits.The debugging of system detection and control circuits and the calibration for the detection channel is finished.The results show that the range of the detection channel is about ±6 pF
the sensitivity is 89.3 mV/pF
and linearity is 2.59 % respectively
which can meet the requirements of the detection channel.
Experiment design and UV-LIGA microfabrication technology to study the fracture toughness of Ni microstructures [J] . Wen Dai,Catherine Oropeza,Kun Lian,Wanjun Wang. Microsystem Technologies . 2006 (4)