A servo control method for continuous zoom optical system based on improved model predictive control

Ruohan Feng; Ruihua Li; Yu Lin; Heng Yang; Hui Xiong

doi:10.1117/12.3018187

30 April 2024 A servo control method for continuous zoom optical system based on improved model predictive control

Ruohan Feng, Ruihua Li, Yu Lin, Heng Yang, Hui Xiong

Proceedings Volume 13153, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems; 131530T (2024) https://doi.org/10.1117/12.3018187
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

The continuous zoom optical system has the ability to continuously observe and lock targets during the field of view conversion process, which can be used for target search, tracking, reconnaissance, and early warning. In order to ensure clear imaging of targets at different distances, in addition to controlling the change in magnification, it is also necessary to fine tune the zoom position. This fine-tuning requires precise positioning of the zoom motor, frequent step changes, and start-stop commutation. Therefore, the motor is greatly affected by interference such as friction and torque fluctuations. In addition, oscillations and crawling may occur at low speeds. In response to the above issues, this paper proposes an improved MPC control strategy, adding PID inner loop to the traditional MPC to improve the anti-interference ability of the system. Moreover, this algorithm can effectively handle multivariable problems with constraints, using rolling optimization to determine the current optimal control strategy, thereby improving the position tracking accuracy, antiinterference, and response speed of the DC zoom motor.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ruohan Feng, Ruihua Li, Yu Lin, Heng Yang, and Hui Xiong "A servo control method for continuous zoom optical system based on improved model predictive control", Proc. SPIE 13153, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Technologies in Optical Systems, 131530T (30 April 2024); https://doi.org/10.1117/12.3018187

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