Hybrid H2∕H∞ sub-optimal stochastic risk-sensitive control for polynomial systems of first degree. (January 2021)

• Record Type: Journal Article
• Authors: Alcorta Garcia, Ma. Aracelia; Anguiano Rostro, Sonia Gpe.; Mendez, Gerardo Maximiliano; Cortes Martinez, Facundo; Elizondo Villarreal, Nora; Torres Lopez, Ernesto; Nava Aleman, Yosefat
• Is Part Of: Journal of process control. Volume 97(2021)
• Page Start: 84
• Page End: 91
• Publication Date: 2021-01
• Subjects: Hybrid H2∕H∞ sub-optimal control -- Stochastic control -- Immune system -- Non-linear systems; Process control -- Periodicals; Fabrication -- Contrôle -- Périodiques; Process control; Periodicals; Electronic journals; 660.281
• DOI: 10.1016/j.jprocont.2020.11.010
• Languages: English
• ISSNs: 0959-1524

Abstract

Abstract: This paper presents the novelty RS (Risk-Sensitive) H 2 optimal control problem with criterion J 2, showing the energy of the control spent into the process, H ∞ RS control approach with level of attenuation λ 1 is obtained, with cost criterion J ∞ . Robustness is added when hybridized H 2 ∕ H ∞ RS sub-optimal control problem is solved, as optimization approach, taking J 2 as cost function criterion, with H ∞ inequality constraint. The sub-optimal solution is obtained imposing that the H ∞ constraint holds with the equality sign. Values of the criterion J 2 versus exponential quadratic cost criterion J, (RS traditional criterion), illustrate advantages of exponential quadratic cost criterion J for different values of diffusion parameter ϵ into the state equation in the final time through an application to the model of the immune system. The experiments show the values of level of attenuation λ 1 in H ∞ RS control problem and hybrid H 2 ∕ H ∞ RS sub-optimal control problem which holds with equality sign. The results of the different experiments that were carried out show that the proposed methodology is feasible and meets the conditions required in H 2, and H ∞ approaches. Highlights: Hybrid H 2 ∕ H ∞ R-S sub-optimal optimization control problem with attenuation level λ 1 . Importance of maintaining the levels of production of ( M ) and ( M ϕ ) for the healthy state. Monocytes and macrophages system as a stochastic process. ( M ) and ( M ϕ ) reach normal levels applying R-S optimal control.