PID controller optimization by GA and its performances on the electro-hydraulic servo control system

A proportional integral derivative (PID) controller is designed and attached to electro-hydraulic servo actuator system (EHSAS) to control the angular position of the rotary actuator which control the movable surface of space vehicles. The PII) gain parameters are optimized by the genetic algorithm (GA). The controller is verified on the new state-space model of servo-valves attached to the physical rotary actuator by SIMULINK program. The controller and the state-space model are verified experimentally. Simulation and experimental results verify the effectiveness of the PII) controller adaptive by GA to control the angular position of the rotary actuator as compared with the classical PID controller and the compensator controller.