Study on force control for fatigue testing machine based on iterative learning control

In this thesis, a new control algorithm iterative learning control (ILC) is applied in the force load control for fatigue testing machine due to non-linearity and unmodeled character of electro-hydraulic servo system and repeatability of fatigue testing machine. A model is established to describe electro-hydraulic servo force control system. According to the model, a controller based on ILC is designed and simulated. By the results of simulation, the effectiveness of ILC is verified.