Distributed dynamic backup servo control for satcom-on-the-move systems

Abstract

Abstract This paper proposes a distributed control system for the servo control of the Satcom-On-The-Move (SOTM) systems. The servo control system is designed based on a distributed structure, which divides the control system into four sub-systems according to their functions. Each sub-system is equipped with a dedicated controller, and the controllers are connected to sensors and actuators via a bus. The control tasks of each sub-system are carried out by their respective controllers. To mitigate the impact of controller failures on the control system during running, a backup sub-system is implemented, which dynamically adjusts its function and state to ensure the normal running of the control system. An analysis of the impact of the switch to the backup sub-system on the stability of the control system under fault condition is presented. Finally, experimental analysis is conducted, and the results demonstrate the feasibility and effectiveness of the proposed design.