How Does A Quartz Flexible Accelerometer Work?

 

Quartz flexible pendulum accelerometer is a force feedback pendulum accelerometer developed on the basis of liquid floating pendulum accelerometer. The main difference between the two is that the detection quality of the quartz flexible accelerometer is not floating, but is elastically connected to the flexible beam support, introducing elastic moment, so it has higher accuracy, strong anti-interference ability, large measurement range, and overload capacity.

The performance of flexible materials directly affects the performance of the accelerometer, and the materials that can be used as a flexible pendulum are mainly metal and quartz. The traditional liquid-floating pendulum accelerometer pendulum adopts metal materials. The thermal expansion coefficient of quartz is much smaller than that of steel, and the material performance is better than metal. In addition, quartz has high fatigue strength and low hysteresis of the material itself, which is very suitable for the pendulum of accelerometer. As soon as the quartz flexible accelerometer came out, it quickly replaced the liquid-floating accelerometer and became an indispensable key component in the inertial navigation and guidance system.

At present, quartz flexible pendulum accelerometers have been widely used in the measurement of various linear acceleration, vibration acceleration, speed, distance, angular velocity, angular displacement and other parameters, and are used in satellite microgravity measurement systems, high-precision inertial navigation systems, and rock-based drilling and oil drilling, continuous inclinometer systems, launch vehicles, ballistic missiles, spacecraft and other military and civilian fields.