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

10th Curtin University Technology Science and Engineering International Conference

自然科学;工业技术

Seer, Qiu Han^1,2 ; Nandong, Jobrun^2

Curtin Sarawak Research Institute, Curtin University Sarawak, Sarawak, Miri

98009, Malaysia^1

Department of Chemical Engineering, Curtin University Sarawak, Sarawak, Miri

98009, Malaysia^2

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

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/121/1/012021/pdf
DOI  :  10.1088/1757-899X/121/1/012021

来源: IOP

【 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.