Arbitrary‐order sliding mode‐based robust control algorithm for the developing artificial pancreas mechanism. Issue 6 (13th October 2020)

• Record Type: Journal Article
• Authors: Alam, Waqar; Khan, Qudrat; Riaz, Raja Ali; Akmeliawati, Rini
• Is Part Of: IET systems biology. Volume 14:Issue 6(2020)
• Page Start: 307
• Page End: 313
• Publication Date: 2020-10-13
• Subjects: diseases -- blood -- control system synthesis -- medical control systems -- feedback -- sugar -- stability -- closed loop systems -- robust control -- variable structure systems; finite‐time effective stabilisation -- glucose–insulin regulatory system -- sliding manifold -- nonlinear terms -- necessary discontinuous terms -- employment -- diabetic patient -- arbitrary‐order sliding mode‐based robust control algorithm -- developing artificial pancreas mechanism -- Diabetes Mellitus -- insulin administration -- escalated glycaemic concentration -- closed‐loop control strategy -- exogenous insulin infusion -- closed‐loop structure -- different feedback control strategies -- mode control approach -- n‐order controllable canonical system -- control algorithm affirms; Systems biology -- Periodicals; Cell physiology -- Periodicals; Biological systems -- Mathematical models -- Periodicals; Genetics -- Mathematical models -- Periodicals; Computational biology -- Periodicals; 573
• DOI: 10.1049/iet-syb.2018.5075
• Languages: English
• ISSNs: 1751-8849

Abstract

Abstract : In Diabetes Mellitus, the pancreas remains incapable of insulin administration that leads to hyperglycaemia, an escalated glycaemic concentration, which may stimulate many complications. To circumvent this situation, a closed‐loop control strategy is much needed for the exogenous insulin infusion in diabetic patients. This closed‐loop structure is often termed as an artificial pancreas that is generally established by the employment of different feedback control strategies. In this work, the authors have proposed an arbitrary‐order sliding mode control approach for development of the said mechanism. The term, arbitrary, is exercised in the sense of its applicability to any n ‐order controllable canonical system. The proposed control algorithm affirms the finite‐time effective stabilisation of the glucose–insulin regulatory system, at the desired level, with the alleviation of sharp fluctuations. The novelty of this work lies in the sliding manifold that incorporates indirect non‐linear terms. In addition, the necessary discontinuous terms are filtered‐out once before its employment to the plant, i.e. diabetic patient. The robustness, in the presence of external disturbances, i.e. meal intake is confirmed via rigorous mathematical stability analysis. In addition, the effectiveness of the proposed control strategy is ascertained by comparing the results with the standard literature.