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PI-controlled bioreactor as a generalized Lienard system | | V. Ibarra-Junquera
; R. Femat
; H.C. Rosu
; | | Date: |
21 Feb 2005 | | Subject: | Chaotic Dynamics | nlin.CD | | Abstract: | It is shown that periodic orbits exist in Cholette’s bioreactor model working under the influence of a PI-controller. We find a diffeomorphic coordinate transformation that turns this controlled enzymatic reaction system into a generalized Lienard form. Furthermore, we give sufficient conditions for the existence and uniqueness of limit cycles in the new coordinates. We also perform numerical simulations illustrating the possibility of the existence of a local center (period annulus). A result with possible practical applications is that the oscillation frequency is a function of the integral control gain parameter | | Source: | arXiv, nlin.CD/0502049 | | Services: | Forum | Review | PDF | Favorites | |
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