Author/Authors :
Jianying Gao and Hector M. Budman، نويسنده ,
Title Of Article :
Design of robust gain-scheduled PI controllers for nonlinear processes
Latin Abstract :
Gain-scheduling has proven to be a successful design methodology in many engineering applications. However, in the absence of
a sound theoretical analysis, these designs come with no guarantees of robust stability, performance or even nominal stability of the
overall gain-scheduled deign.
This paper presents such an analysis for one type of nonlinear gain-scheduled control system based on the process input for nonlinear
chemical processes. A methodology is also proposed for the design and optimization of the robust gain-scheduled PI controller.
Conditions which guarantee robust stability and performance are formulated as a finite set of linear matrix inequalities (LMIs)
and hence, the resulting problem is numerically tractable. Issues of modeling error and input-saturation are explicitly incorporated
into the analysis. A simulation study of a nonlinear continuous stirred tank reactor (CSTR) process indicates that this approach can
produce efficient sub-optimal robust gain-scheduled controllers.
NaturalLanguageKeyword :
Lyapunov functions , discrete-time systems , Robust control , Nonlinear systems
JournalTitle :
Studia Iranica
