ITERATIVE LEARNING CONTROL FOR AN ELECTROHYDRAULIC STRENGTH TEST BENCH
M. V. Trubin1, V. D. Yurkevich1,2
1Novosibirsk State Technical University, Novosibirsk, Russia
2Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: strength testing, electrohydraulic drive, control, iterative learning, proportional-integral controller
Abstract
The problem of the control system design for electrohydraulic test benches for strength and life tests of aircraft structures is considered. It is proposed to use a control algorithm with iterative learning to improve the accuracy of the formation of a given cyclogram of force loading of mechanical structures. The results of numerical simulation of a test bench control system with iterative learning are presented, as well as the results of experimental testing of the proposed algorithm on a single-channel test bench. The results of modeling and experiments on the test bench show the possibility of increasing the accuracy of forming a given force loading cyclogram based on the proposed approach. The results obtained make it possible to automate the process of setting up regulators for electrohydraulic drives of strength test benches, as well as to speed up the process of carrying out endurance and static strength tests of aircraft structures.
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