Abstract:

In order to remove the nonlinear factor of the DC(Direct Current) rotor speed regulation system in large photoelectric tracking table, a servo system with sliding mode variable structure control was designed . It achieves quick response performance and insensitivity to variation of plant parameters and external disturbance of the variable structure control. According to the simulation and relative to the PID(Proportional_Integral_Differential) controller, results show that sliding mode control can reduce adjust time and tracking error, also has a strong robustness for external disturbance and parameter change.

Key words: sliding mode variable structure control, robustness, DC rotor speed regulation system, nonlinear