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Large problems are not necessarily hard: a case study on distributed NMPC paying off
Publikationstyp
Conference Paper
Date Issued
2025-06
Sprache
English
Citation
23rd European Control Conferenc, ECC 2025
Contribution to Conference
Publisher DOI
Publisher
IEEE
A key motivation in the development of Distributed Model Predictive Control (DMPC) is to accelerate centralized Model Predictive Control (MPC) for large-scale systems. DMPC has the prospect of scaling well by parallelizing computations among subsystems. However, communication delays may deteriorate the performance of decentralized optimization, if excessively many iterations are required per control step. Moreover, centralized solvers often exhibit faster asymptotic convergence rates and, by parallelizing costly linear algebra operations, they can also benefit from modern multicore computing architectures. On this canvas, we study the computational performance of cooperative DMPC for linear and nonlinear systems. To this end, we apply a tailored decentralized real-time iteration scheme to frequency control for power systems. DMPC scales well for the considered linear and nonlinear benchmarks, as the iteration number does not depend on the number of subsystems. Comparisons with multi-threaded
centralized solvers demonstrate competitive performance of the proposed decentralized optimization algorithms.
centralized solvers demonstrate competitive performance of the proposed decentralized optimization algorithms.
DDC Class
600: Technology