Authors:
Gholam-Reza Sari
1
;
Ouassima Akhrif
2
and
Lahcen Saydy
1
Affiliations:
1
Polytechnique Montreal, Canada
;
2
Ecole de Technologie Superieure and University of Quebec, Canada
Keyword(s):
Robust Passivity-based Control, Axial Compressor, Rotating Stall and Surge Control, Close-Coupled Valve, Model Uncertainty and Disturbance Rejection.
Related
Ontology
Subjects/Areas/Topics:
Control and Supervision Systems
;
Engineering Applications
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Nonlinear Signals and Systems
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
Abstract:
In this work, we address the stability of compression systems and the active control of performance limiting phenomena: surge and rotating stall. Despite considerable efforts to stabilize axial compressors at efficient operating points, preventing and suppressing rotating stall and surge are still challenging problems. Due to certain passivity properties of the widely used Moore and Greitzer model for axial compressors, a robust passivity-based control approach is applied here to tackle the problem. The main advantage of this approach is that robust stabilization and high performance control can be achieved by simple control laws and limited control efforts. Analytical developments and time-domain simulations demonstrate that the developed control laws can effectively damp out rotating stall and surge limit cycles by throttle and close-coupled valve actuations. The robust performance of the controller is validated in the presence of bounded mass flow and pressure disturbances, as wel
l as model uncertainties.
(More)