Title :
Speed and surge control for a low order centrifugal compressor model
Author :
Gravdahl, Jan Tommy ; Egeland, Olav
Author_Institution :
Dept. of Eng. Cybern., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
Previous work on stabilization of compressor surge is extended to include control of the angular velocity of the compressor. First, a low order centrifugal compressor model is presented where the states are mass flow, pressure rise and rotational speed of the spool. Energy transfer considerations are used to develop a compressor characteristic. In order to stabilize equilibriums to the left of the surge line, a close coupled valve is used in series with the compressor. Controllers for the valve pressure drop and spool speed are derived. Semi-global exponential stability is proved using a Lyapunov argument
Keywords :
Lyapunov methods; angular velocity control; asymptotic stability; centrifuges; compressors; robust control; surges; Lyapunov argument; angular velocity control; centrifugal compressor; energy transfer; exponential stability; mass flow; pressure rise; speed control; stabilization; surge control; Angular velocity; Angular velocity control; Control systems; Cybernetics; Lyapunov method; Pressure control; Stability analysis; Surges; Valves; Weight control;
Conference_Titel :
Control Applications, 1997., Proceedings of the 1997 IEEE International Conference on
Conference_Location :
Hartford, CT
Print_ISBN :
0-7803-3876-6
DOI :
10.1109/CCA.1997.627573
