Feed-forward control method based on angle information in tracking system

Abstract

The invention discloses a feed-forward control method based on angle information in a tracking system, wherein an encoder and a CCD (Charge Coupled Device) detector are installed on a control target, the CCD detector receives the angle information of the encoder and the orbit information of the target and performs subtract processing on the angle information and the orbit information of the target to extract a target miss distance; a tracking controller receives the target miss distance and generates and outputs the target miss distance to a tracking control signal; a first adding unit performs addition processing on the target miss distance and the angle information to extract the orbit information of the target; a Kalman filter receives and obtains the speed and acceleration signals of the target from the extracted target orbit signal; a feed-forward controller generates and outputs the speed and acceleration signals of the target to a feed-forward control signal; and a second adding unit receives and performs addition processing on the feed-forward control signal and the tracking control signal to generate and output a drive control signal for driving the control target so as to realize the closed loop correction of the target miss distance.

Description

technical field [0001] The invention belongs to the field of photoelectric control, and in particular relates to a speed and acceleration feedforward control method based on angular position information, which can be used for high-precision tracking of targets. Background technique [0002] In the photoelectric tracking control system, the high-precision tracking of the target is very important. The "fire pool" control system designed by Lincoln Laboratory in the United States uses angular position information and high-precision ranging information to achieve coaxial tracking and achieve good control effects. In the domestic tracking control system, the speed feedforward based on the synthesis of angular position information is generally used (the application simulation of predictive filtering technology in the photoelectric theodolite, Optoelectronic Engineering, Vol(8), 2002) has also achieved certain results. However, this method only uses velocity feedforward without an...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of no angular acceleration compensation in the prior art and the insignificant technical defect of improving the system accuracy, the purpose of the present invention is to provide a feedforward control method based on angular position information in the tracking system

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