A New Robust LMI-based MPC for Compressor Surge Instability in the Presence of Actuator Saturation and Pipe Effects

다국어 초록 (Multilingual Abstract)

Compressor is the most important tool for compression and fluid transfer in general and industrial uses, and the control of surge instability has been considered in this study. To overcome the weakness of previous active control methods in covering compressor characteristic and throttle valve uncertainties, and also covering the effects of the pipe on the surge instability, a nonlinear dynamic model involving the effects of piping acoustic considered and a new robust model predictive control method based on linear matrix inequality is provided. In the proposed method, in addition to covering uncertainties effects along with pipe effects, the control signal is obtained by optimizing the objective function and due to the use of the LMI approach, it has an appropriate computational complexity. The proposed method also considers the constraints on the CCV actuator and is able to manage the constraints on the compressor system states. Simulation in MATLAB environment has been used to show the capabilities of the proposed method and the obtained results show the superiority of the innovative control method in terms of robustness and guarantee stability in the presence of uncertainties and pipe effects with a suitable volume of calculations.