Fuzzy logic surge control in variable speed axial compressors

This paper discusses active surge control in variable speed axial compressors. A compression system equipped with a variable area throttle is investigated. Based on a given compressor model, a fuzzy logic controller is designed for surge control and a proportional speed controller for speed control. The fuzzy controller uses measurements of the change of mass flow and the change of pressure rise to determine the control action. The presented approach does not require the knowledge of system equilibrium or the surge line. Simulation studies show promising results that the proposed fuzzy logic controller is capable to suppress surge at different operating points.