Abstract

The improvement of the automated ammunition supply system in the CAESAR 8×8 self-propelled gun through the implementation of a three-loop control system for the manipulator rotation electric drive are considered in the article. The feasibility of replacing the traditional hydraulic drive with an electric one is justified based on its higher precision, adaptability, compactness, and ease of maintenance. A motion tachogram and load diagrams are presented, forming the basis for the substantiated selection of the DC motor power. A simulation model of the three-loop cascade control system (current, speed, and position) has been developed and studied under a typical ammunition supply cycle. The interaction of control loops, which enables coordination of the system’s dynamic characteristics are reviewed. The model incorporates a control structure with a proportional (P) position controller and proportional–integral (PI) controllers for the speed and current loops. Controller tuning using technical and symmetrical optimum criteria to ensure a balance between accuracy, dynamic response, and system stability was performed. A transient analysis was carried out in all three loops, allowing the evaluation of system sensitivity to load variations and ensuring stable operation under real operating conditions. It has been established that the implementation of a position control loop in a three-loop control system, compared to the traditional two-loop structure, enables accurate positioning of the manipulator and enhances the stability of the electric drive. The research results confirm the effectiveness of the proposed control architecture under variable load conditions typical for the ammunition supply cycle in self-propelled gun.

Keywords: self-propelled gun, automated ammunition supply, manipulator, control system, adjustable electric drive.

FULL TEXT (in Ukrainian)

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The article was submitted 15.05.2025.
©Karpovych, O., Trushkov, H.
Creative Commons Attribution 4.0 International License (CC BY 4.0)