Title :
A control strategy for a class of cascade systems including saturation elements
Author :
Giri, F. ; Chater, E. ; Gning, J.B. ; Chaoui, F.Z. ; Haloua, M.
Author_Institution :
GREYC Lab., Univ. of Caen, Caen, France
fDate :
June 30 2010-July 2 2010
Abstract :
We are considering the problem of controlling systems including, in cascade, two dynamic linear subsystems and two static nonlinear elements of the saturation type. Furthermore, the second dynamic subsystem is allowed to be of type one (i.e. include an integrator). The problem is dealt with designing a cascade control strategy consisting of two main control loops. The control signal generated by the outer loop acts as reference input for the inner loop which in turn generates the actual control signal applied to the system. It is formally shown that proposed cascade controller stabilizes the resulting closed-loop system and ensures perfect tracking of step-like output reference signals that are compatible with the system saturating elements.
Keywords :
cascade systems; closed loop systems; nonlinear control systems; stability; tracking; cascade control strategy; cascade controller; cascade systems; closed-loop system; control loops; control signal; dynamic linear subsystems; outer loop acts; saturation elements; saturation type; second dynamic subsystem; static nonlinear elements; step-like output reference signals; system saturating elements; tracking; Chaos; Control systems; Hydraulic actuators; Linear systems; Nonlinear control systems; Open loop systems; Safety; Sensor systems; Signal generators; Stability;
Conference_Titel :
American Control Conference (ACC), 2010
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-7426-4
DOI :
10.1109/ACC.2010.5530684