Modelling & Position Control for Electro-Hydraulic System 
Meera C S1, Mukul Kumar Gupta2
1Meera C S*, Department of Electrical and Electronics, University of Petroleum and Energy Studies (UPES), Dehradun (UK), India.
2Mukul Kumar Gupta, Department of Electrical and Electronics, University of Petroleum and Energy Studies (UPES), Dehradun (UK), India.
Manuscript received on November 10, 2019. | Revised Manuscript received on November 17, 2019. | Manuscript published on 30 November, 2019. | PP: 3841-3845 | Volume-8 Issue-4, November 2019. | Retrieval Number: D8217118419/2019©BEIESP | DOI: 10.35940/ijrte.D8217.118419
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Abstract: Electro-hydraulic systems (EHS) are widely used in industrial applications due to the high-power density and accuracy. However, EHS are highly nonlinear which makes its modelling and control aspects a complex process. In this paper, we present the modelling and position control for an electro-hydraulic system (EHS). The mathematical modelling is carried out considering the non-linearities like friction, discharge coefficient and load mass present in the system. A back-stepping control scheme is developed for maintaining the accuracy in the position control. The closed-loop stability of the proposed control system is analyzed with Lyapunov’s theory. The performance of the control system under the effect of bounded external uncertainties is validated with simulation study. The study indicates that the proposed controller gives an effective motion control in presence of the system uncertainties.
Keywords: Backstepping Control, Electro-Hydraulic System, Modelling, Position Control.
Scope of the Article: Hydraulic Engineering.