Dithering mechanism temperature’s influence on bias stability

The dither mechanism working in a resonant condition is a type of high-precision electromechanical component. The research works show that the dither rate will be changed with the environment temperature,which will directly cause the random walk to vibrate and lead the bias stability of output signal of RLG to get worse. The temperature character of dithering mechanism was studied by experiments. The relationship between the output error of RLG and the dither amplitude was obtained. A method for enhancing the bias stability was developed. Simulations and experiment results demonstrate the validity of this method.