A robust control method for photoelectric attitude control system based on P-SMC-ADRC compound control

Abstract

This invention relates to the field of automatic control technology, specifically disclosing a robust control method for an optoelectronic attitude control system based on P-SMC-ADRC composite control. The method includes the following steps: constructing an improved ADRC architecture using a TD microtracker, an extended state observer (EKF-ESO) based on EKF, and a nonlinear state error feedback (NLSEF); designing a piecewise sliding mode control (P-SMC) by adopting different reaching law structures according to the error range of the sliding surface; unifying and integrating the improved ADRC architecture with the P-SMC control to construct a composite control law P-SMC-ADRC controller; and automatically selecting key parameters of the controller using the absolute error integral (IAE) as the optimization objective and the particle swarm optimization (PSO) algorithm. This invention, by integrating the improved EKF-ESO, nonlinear state error feedback (NLSEF), and piecewise sliding mode control (P-SMC), constructs a composite control law P-SMC-ADRC controller to achieve robust suppression of internal uncertainties, external disturbances, and measurement noise, and improves the response speed and steady-state accuracy of the optoelectronic attitude control system.

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