Application of Least Squares Predictive Filtering Algorithm in Optical Tracking Servo of Shooting Range
Due to the increase in the flight speed of the tracked target,the input angular velocity and angular acceleration of photoelectric tracking servo system in the shooting range are also gradually increasing,resulting in an increase in the dynamic tracking error of the system,and even the situation of escaping from the detector field of view has occurred.Therefore,the least squares prediction filtering algorithm is adopted to estimate the target angular velocity by superimposing the television or infrared off target distance with the turntable angular position information,and feed it forward to the input of servo angular velocity loop,thus forming an equivalent composite control.Through simulation and tracking the rotating target experiment verification,this method can obtain relatively accurate target angular velocity,using equivalent composite control can effectively reduce tracking errors,and improve tracking accuracy.
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