As high Q value accelerometer has the advantage of reducing thermal-mechanical Brownian noise

it is widely used in high precision low noise measurement field

but the closed loop circuit becomes one of the difficulties for application.With the analysis of the structure and the dynamic response of this kind of accelerometer

a closed loop detection circuit based on PID feedback is presented to over-come the disadvantage effect of high Q value accelerometer.Based on the design theory

a PCB board level circuit is designed for the test.Measurement results indicate that the circuit effectively improves the bandwidth

linearity

dynamic response time of the system.