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- W4283207611 abstract "A hierarchical Model Predictive Control (MPC) formulation is presented for coupled discrete-time linear systems with state and input constraints. Compared to a centralized approach, a two-level hierarchical controller, with one controller in the upper-level and one controller per subsystem in the lower-level, can significantly reduce the computational cost associated with MPC. Hierarchical coordination is achieved using adjustable tubes, which are optimized by the upper-level controller and bound permissible lower-level controller deviations from the system trajectories determined by the upper-level controller. The size of these adjustable tubes determines the degree of uncertainty between subsystems and directly affects the required constraint tightening under a tube-based robust MPC framework. Sets are represented as zonotopes to enable the ability to optimize the size of these adjustable tubes and perform the necessary constraint tightening online as part of the MPC optimization problems. State and input constraint satisfaction is proven for the two-level hierarchical controller with an arbitrary number of controllers at the lower-level and a numerical example demonstrates the key features and performance of the approach." @default.
- W4283207611 created "2022-06-22" @default.
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- W4283207611 date "2022-09-01" @default.
- W4283207611 modified "2023-09-30" @default.
- W4283207611 title "Hierarchical MPC for coupled subsystems using adjustable tubes" @default.
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- W4283207611 doi "https://doi.org/10.1016/j.automatica.2022.110435" @default.
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