A Three-Tier Time-Scale Architecture for Controlling Complex Nonlinear Systems

This letter proposes a three-tier computational architecture for the real-time control of nonlinear complex systems, such as time-dependent PDEs. There is an important class of such problems for which existing single- and two-time-scale approaches are fundamentally insufficient due to lack of a priori system knowledge, computational complexity, model fidelity requirements, and uncertainty. The proposed architecture consists of an offline, meso-scale, and real-time layer of computation, with distinct roles for each layer and specific information flow between them. The result is a practical systems-level paradigm that enables real-time operation of complex nonlinear control problems.

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