Pre-stabilised Predictive Functional Control for Open-loop Unstable Dynamic Systems

Abstract Predictive functional control (PFC) is the simplest model-based algorithm, equipped with attributes of a fully fledged predictive controller but at cost and complexity threshold standard PID regulator. It has proven benefits in controlling stable SISO dynamic systems, similarly to its competitor PID, it loses efficacy when challenging application introduced. In this paper, we present modified PFC approach, especially tailored for open-loop unstable processes, using pre-stabilisation efficiently undesirable dynamics hand. This essentially two-stage design scheme implications tuning constraint handling. The proposal, nevertheless, straightforward intuitive, provides improved closed-loop presence external perturbations against PFC, significantly better performance overall compared common as demonstrated numerical case-study.