Analysis and research on image jitter of airborne infrared turret under low temperature

According to the image jitter of airborne infrared turret under low temperature, the main factors inducing the image jitter are analyzed.Through modeling, thermodynamic analyzing and statics analyzing, the max deflection of the pitch stents is 0.34 mm under low temperature, and is 0.46 mm under acceleration overload.By assembling the pitch stents and solidifying the configuration, deflection of the pitch stents is controlled less in 0.05 mm, which makes the pitch stents turn smoother.Moreover, improvement measures are proposed for spin wiring mode and motor brush installation location and control data is provided, which solves the problem of image jitter of airborne infrared turret under low temperature.