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24 November 2021 Sliding mode line-of-sight stabilization of two-axis photoelectric platform
Ting Ji, Lei Li, Jing Wang, Xinni Zhou, Kai Shi, Yuxin Gao, Wei Chen
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Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120651J (2021) https://doi.org/10.1117/12.2605695
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China
Abstract
The PID controller is widely used in two-axis photoelectric platform velocity loop, however the control precision and the stability of controller are contradictory, especially when friction torque is added. In order to solve this problem, the characteristics of PID controller were analyzed detail in this paper, then a sliding mode controller was designed based on the approach law. First, the model of two-axis photoelectric platform velocity loop was established, then the friction model was linearized according to the interval analysis theory, after that the sliding mode function and the controller was designed, next the simulation model was build, finally, the performance of the velocity loop was compared between sliding mode controller and PID controller, the results showed the sliding mode controller has higher control precision and the stability.
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Ting Ji, Lei Li, Jing Wang, Xinni Zhou, Kai Shi, Yuxin Gao, and Wei Chen "Sliding mode line-of-sight stabilization of two-axis photoelectric platform", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120651J (24 November 2021); https://doi.org/10.1117/12.2605695
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KEYWORDS
Control systems
Performance modeling
Control systems design
Device simulation
Motion models
Nonlinear control
Simulink
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