Research on Nozzle Array Structure Fluidic Gyroscope Signal Extraction Circuit

Abstract

The nozzle array structure fluidic gyroscope signal extraction circuit was researched. To acquire output voltage signal from the gyroscope angular rate sensitive element, which had enough sensitivity to detect, the signal extraction circuit was designed. Then, the circuit function and principle for each module was analyzed. The signal extraction circuit is composed up bridge circuit, voltage regulator circuit, amplifying circuit and filter circuit. The experiment results show that using the signal extraction circuit, the sensitive element output sensitivity is 10mV/°/s and linearity is 4.8% from the first stage. Therefore, the signal extraction circuit realizes the transformation from angular rate signal to the voltage signal and eliminates effectively noise jamming from the external environment, which provides the foundation for the fluidic gyroscope compensation circuit.