Aiming at the problems of high temperature and strong vibration environment in oil drilling

as well as the complex structure and significant temperature influence sensitivity of traditional quartz flexible accelerometer

an accelerometer based on electrostatic force balance is optimized and improved.A three-dimensional model of the accelerometer head is constructed

and finite element simulation software is used to optimize the structure of the pendulum and carry out modal

thermal stress

and harmonic response simulations.The results indicate that the thermal stress of the electrostatic accelerometer is much lower than that of the traditional quartz flexible accelerometer at a high temperature of 200℃

and the structure can withstand c

ontinuous vibration of 30

g

which meets the urgent need of high-temperature resistant and anti-vibration accelerometers in oil drilling.