Fractional order PID Based Control Strategy for the Valve Plant of Hydraulic Transformer

Abstract:

Aiming at the pressure control of hydraulic transformer (HT), the fractional order PID (FOPID) controller is proposed for the control of the position of the valve plate. The assignment system of the HT is carefully modeled. To optimally determine the parameters of the FOPID controller, a self-adapting differential evolution algorithm is employed. Numerical simulation is conducted to investigate the proposed control strategy. Both step response and sinusoidal command signal tracking of the servo system is assessed, and the results demonstrate that the proposed control strategy is obviously superior to the conventional PID, Fuzzy Logic Controller (FLC) and fuzzy-PID control strategy, and can afford precise tracking performances. It is suitable for the precise adjustment of the output pressure of the HT.

• Periodical: Applied Mechanics and Materials (Volume 203)
• Pages: 46-50
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.203.46
• Online since: October 2012
• Authors: Shu Nan Liu, Dan Tong Xie, Shu Qiang Jia, Tao Shang, Yong Ming Yao, Wei Zhao
• Keywords: Fluid Power Control, Fluid Power Transmission, Fractional Order PID, Hydraulic Transformer, Performance Analysis, Valve Plant

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