Sliding mode stabilization of a centrifugal compressor with spool dynamics

In this paper, the topic of robust stabilization of a centrifugal compressor with spool dynamics is studied and presented. Sliding mode controls for systems with matching-type and mismatching-type uncertainties are seperately designed and verified. The sliding mode design is chosen to achieve the stability of the working equilibrium for systems without uncertainties. However, it is known that uncertainties in the spool dynamics and the compressor characteristic are most likely to happen in the real applications. By actuating only the throttle as the single control input, the robust stabilization of the working equilibrium is proposed by using a sliding mode control. Numerical simulations are given to demonstrate the feasibility of the proposed and derived approaches.

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