A threshold test method for high precision accelerometer based on biaxial turntable

In the microgravity measurement system, accelerometers should have high precision threshold. But it is hard to measure the threshold of the high precision accelerometers. In this regard, a new threshold test method based on the biaxial turntable was presented. The biaxial turntable can divide the gravity twice, in this way, microgravity can be aroused. The threshold value can be obtained by comparing the actual output of the accelerometer and the theoretical microgravity value. Lastly, the new threshold value test method was proved to be correct by the simulation analysis.