Dynamic Surface Sliding Mode Control for Large Hydraulic Erecting System

doi:10.3969/j.issn.1000-1093.2014.02.015

Abstract

Abstract: A nonlinear model for the large hydraulic erecting system is established by redefining the load flux and load pressure of the valve controlled asymmetrical cylinder. A dynamic surface sliding mode control method is proposed to overcome the nonlinearities and uncertainties existing in the erecting process of large erecting system, and the sliding mode control and dynamic surface control are introduced in designing this controller. The control law is presented. Simulation results show that, compared to PID control and conventional sliding mode control, the dynamic surface sliding mode controller has nicer robustness and tracking performance, and the control stability and robustness of erecting system are improved.

Key words: control science and technology, sliding mode control, dynamic surface control, erecting system, nonlinearity, asymmetrical cylinder, uncertainty, robustness

CLC Number:

TP273

LI Liang, XIE Jian, HUANG Jian-zhao. Dynamic Surface Sliding Mode Control for Large Hydraulic Erecting System[J]. Acta Armamentarii, 2014, 35(2): 235-240.

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