21 / 2016-08-08 10:34:57

Optimization of Servo System's Dynamic Performance Based on Luenberger Observer

11105

Abstract: Linear electro-mechanical actuator was used as a core components of the large space mechanic and its position were measured by resolver. Velocity of the linear electro-mechanical actuator was calculated by the position data using the simple difference which always caused the phase lag issues. In order to reduce the phase lag, luenberger observer was designed and analyzed. According to the specific parameters of the servo system and closed loop control structure, luenberger observer for compensator was designed in velocity loop. Simulation model was established by Simulink which showed that the luenberger observer could effectively reduce the phase lag caused by the simple difference of resolver data and improve servo system’s dynamic response significantly.