Tracking error plus damping injection control of non-minimum phase processes
Document Type
Article
Publication Date
1-1-2018
Abstract
This work proposes a passivity-based approach to deal with the output-tracking-error problem for a large class of nonlinear chemical processes including non-minimum phase systems. More precisely, in that framework, the system dynamics is firstly written into the relaxing (pseudo) port-Hamiltonian representation which does not necessarily require the positive semi-definite property of the damping matrix. Then, a reference trajectory associated with a certain structure passing through a desired equilibrium point (i.e., the set-point) is chosen so that the error dynamics can be globally asymptotically stabilized at the origin thanks to the assignment of an appropriate damping injection. This method is subsequently illustrated for a benchmark of multiple reactions systems, namely Van de Vusse reaction system. The numerical simulations show the applications of the proposed approach.
Keywords
Port-Hamiltonian framework, chemical process systems, non-minimum phase system, passivity, tracking error
Divisions
fac_eng
Publication Title
IFAC-PapersOnLine
Volume
51
Issue
18
Publisher
Elsevier