Study on the Robustness of Hydraulic Turntable Variable Structure Control

This paper establishes the mathematical model of the three degrees freedom hydraulic turntable system, and presents a new design method and procedures of the variable structure control(VSC) system, and a new control law based Lyapunov theory. In this paper, simulation experiments of three degree freedom electrical-hydraulic turntables are conducted, and researches the robustness characteristic of variable structure control in theory. Research and experiments have shown that the variable structure control system is distinguished by its excellent dynamic and steady-state characteristics, and is insensitivity to variation in the plant parameters and to external disturbances.