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Mathematical Problems in Engineering
Volume 2014, Article ID 821419, 7 pages
Research Article

Research of Impact Load in Large Electrohydraulic Load Simulator

School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China

Received 7 July 2014; Revised 26 July 2014; Accepted 26 July 2014; Published 18 August 2014

Academic Editor: Hui Zhang

Copyright © 2014 Yongguang Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The stronger impact load will appear in the initial phase when the large electric cylinder is tested in the hardware-in-loop simulation. In this paper, the mathematical model is built based on AMESim, and then the reason of the impact load is investigated through analyzing the changing tendency of parameters in the simulation results. The inhibition methods of impact load are presented according to the structural invariability principle and applied to the actual system. The final experimental result indicates that the impact load is inhibited, which provides a good experimental condition for the electric cylinder and promotes the study of large load simulator.