| Dynamic target track is one of the cutting-edged tendency in the testing research field. Its main applications field include military, aerospace, transportation and other fields, especially in military field. Electro-optical tracking control system is one of the key technologies for tracking, reconnaissance, positioning, navigation and other applications. Tracking accuracy is the main indicator of the Electro-optical tracking system. In order to improve the tracking accuracy of electro-optical tracking turntable system, this paper mainly focuses on the control structure of servo system, signal filtering method and control algorithm. In this paper, the following issues are mainly studied.Firstly, the development status of researches on the electro-optical tracking system, especially on tracking control and filtering algorithms are introduced. The meaningful contributions of the research in this paper are described in detail.Secondly, based on the performance indicators of electro-optical tracking system, the overall structure of electro-optical tracking system is analyzed. After the comparisons of different tracking systems, the mechanical structure of the tracking system and servo control system are designed, mainly including the control strategy and system construction.Furthermore, the model of the tracking control system is built, using three control loops including current loop, velocity loop and position loop as the closed-loop control algorithm. Also, DSP is used as the kernel of the proposed controller, and the software implementation is programmed.Finally, several filtering algorithms are proposed, in order to improve the tracking accuracy and eliminate the disturbances of delays and noises. through the simulation analysis and comparisons, Kalman filtering method, as the optimal approach, could effectively reduce the tracking error. Then the required tracking performance of the proposed system could be fulfilled, proved the system commissioning and testing experiments. |
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