Elimination of Surplus Forces in Electrohydraulic Load Simulators Based on Compound Control

AI Zhi-jiu; WANG Yun-rui; SHU Jian-hua; LIU Xu; CHEN Rui; WU Ding-ding

doi:10.21656/1000-0887.370185

Volume 38 Issue 3

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Article Navigation > Applied Mathematics and Mechanics > 2017 > 38(3): 321-332

AI Zhi-jiu, WANG Yun-rui, SHU Jian-hua, LIU Xu, CHEN Rui, WU Ding-ding. Elimination of Surplus Forces in Electrohydraulic Load Simulators Based on Compound Control[J]. Applied Mathematics and Mechanics, 2017, 38(3): 321-332. doi: 10.21656/1000-0887.370185

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Elimination of Surplus Forces in Electrohydraulic Load Simulators Based on Compound Control

doi: 10.21656/1000-0887.370185

¹School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, P.R.China;²Sinopec SichuantoEast Gas Pipeline Co., Ltd., Wuhan 430000, P.R.China;³Offshore Oil Engineering (Zhuhai) Co., Ltd., Zhuhai, Guangdong 519000, P.R.China

Funds: The National Natural Science Foundation of China(51074202)

Received Date: 2016-06-12
Rev Recd Date: 2016-06-28
Publish Date: 2017-03-15

Abstract

Abstract

In order to restrain the surplus force caused by position disturbance in the aircraft rudder electrohydraulic load simulator and improve accuracy of the loading system, the mathematical model for each part and the whole system was established. Through the analysis of the mathematical model, the generation mechanism for the surplus force was expounded, and the transfer function for the surplus force was established. A compound control method was proposed which combined PID and feedforward compensation. The numerical simulation and the experimental study were carried out based on the proposed method. The results of simulation and experiment show that, the feedforward PID compound control can effectively restrain the system’s surplus force, so as to improve the loading accuracy of the electrohydraulic load simulation system. At the same time, the experimental results show that the surplus force hits a mutation when the system changes the direction of movement, which points out the direction for further research.
- electrohydraulic load simulator,
- mathematical model,
- surplus force,
- feedforward PID compound control

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References(19)

References

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