Iterative Learning Control for an Electrohydraulic Strength Test Bench

The problem of design of control systems for electrohydraulic benches for strength tests and life tests of aircraft structures is considered. It is proposed to use a control algorithm with iterative learning to improve the accuracy of forming a given cyclogram of force loading of mechanical structures. The results of numerical simulation of the test bench control system with iterative learning and the results of experimental verification of the proposed algorithm on a single-channel test bench are given. The results of simulation and experiments on the test bench showed that the accuracy of forming a given cyclogram of force loading can be increased based on the proposed approach. The results allow automating the adjusting controllers for electrohydraulic drives of strength test benches and accelerating the process of carrying out life tests and static strength tests of aircraft structures.