Abstract
In this paper, an optimal control based on integral super-twisting algorithm is investigated in order to achieve the high dynamic performance and high efficiency of moto-pump-pipline system. The proposed controller system (MEL-ISTSM-LQR) involves the combination of Integral Super-Twisting Sliding Surface (ISTSM) and Linear Quadratic Regulator (LQR) which related to Minimum Electric Loss (MEL) condition aiming to improve performance robustness of the control with optimal cost. In additional, the genetic algorithm (GA) can be used to improve the results further by adjust the linear quadratic regulator parameters in order to get a best values of weight matrix Q and R. A comparative analysis based on parameters, control energy, chattering phenomena, and the control robustness has been made between the integral super-twisting sliding mode control (ISTSM), and the proposed control strategy (MEL-ISTSM-LQR) for moto-pump-pipline system based on the simulated results. The optimal operating point during both variable-speed and throttling valve to operate the motor-pump system in the region of best efficiency is also investigated. The results of a simulation demonstrate that the proposed controller prove energy efficiency, robustness achievement and chattering reduction.
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