A unified double-loop multi-scale control strategy for NMP integrating-unstable systems

[摘要] This paper presents a new control strategy which unifies the direct and indirect multi-scale control schemes via a double-loop control structure. This unified control strategy is proposed for controlling a class of highly nonminimum-phase processes having both integrating and unstable modes. This type of systems is often encountered in fed-batch fermentation processes which are very difficult to stabilize via most of the existing well-established control strategies. A systematic design procedure is provided where its applicability is demonstrated via a numerical example.

[发布机构] Curtin Sarawak Research Institute, Curtin University Sarawak, Sarawak, Miri; 98009, Malaysia^1;Department of Chemical Engineering, Curtin University Sarawak, Sarawak, Miri; 98009, Malaysia^2

[效力级别] 工业技术

[关键词] Control strategies;Double-loop control;Fed-batch fermentation;Multi-scale controls;Non-minimum phase process;Systematic designs;Unified control;Unstable system