Research on Hydro-pneumatic Suspension Test Bench Based on Electro-hydraulic Proportional Control

Authors

  • Xin Bai School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
  • Liqun Lu School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
  • Meng Sun School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
  • Leilei Zhao School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
  • Hui Li School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

DOI:

https://doi.org/10.13052/ijfp1439-9776.2436

Keywords:

Hydro-pneumatic suspension, , electro-hydraulic proportional control system, fuzzy PID control, AMESim/Simulink, test bench

Abstract

Compared with the traditional automotive suspension, hydro-pneumatic suspension has the characteristics of large energy storage ratio, nonlinear stiffness and can change the ground clearance of the vehicle body, which makes the vehicle have good ride comfort and handling stability during driving. In order to improve the performance of hydro-pneumatic suspension, it is necessary to design hydro-pneumatic suspension test bench for performance test. Aiming at the problem that the output signal of the mechanical test bench used in China is single and has large error, which is difficult to meet the performance test requirements of hydro-pneumatic suspension, a hydro-pneumatic suspension test bench based on electro-hydraulic proportional control is designed. Through AMESim/MATLAB joint system modeling and simulation, in the tracking comparison of sinusoidal signal, compared with the traditional PID control method, the fuzzy PID control method reduces the error by 56.8% and the lag time by 70%; Through the experimental analysis of hydro-pneumatic suspension elastic force characteristic diagram, indicator diagram and damping force velocity characteristic diagram, the error rate of the test bench in sinusoidal signal tracking experiment is less than 15%, which meets the test requirements of hydro-pneumatic suspension.

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Author Biographies

Xin Bai, School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

Xin Bai, born in 1999, she is a master’s student in the School of Transportation and Vehicle Engineering, Shandong University of Technology, China, mainly engaged in the research of vehicle suspension control system and parts design theory and technology.

Liqun Lu, School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

Liqun Lu, born in 1969, associate professor of the School of Transportation and Vehicle Engineering of Shandong University of Technology, China. He obtained his Ph.D. degree in vehicle engineering from the University of Science and Technology Beijing in December 2008, mainly engaged in the research of intelligent control of special vehicles and key components, electro-hydraulic control system related technologies.

Meng Sun, School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

Meng Sun, born in 1998, she is a master’s student in the School of Transportation and Vehicle Engineering of Shandong University of Technology, China, mainly engaged in fluid transmission control technology and the design and research of key components of hydraulic systems.

Leilei Zhao, School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

Leilei Zhao, born in 1982, associate professor of the School of Transportation and Vehicle Engineering of Shandong University of Technology, China. He received his Ph.D. degree in mechanical and electronic engineering from Beijing University of Posts and Telecommunications in June 2019, mainly engaged in the design theory and technology research of vehicle suspension systems.

Hui Li, School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China

Hui Li, born in 1995, he obtained a master’s degree in transportation engineering from Shandong University of Technology, China in June 2021, mainly engaged in the design theory and technology research of vehicle suspension systems.

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Published

2023-06-21

How to Cite

Bai, X. ., Lu, L. ., Sun, M. ., Zhao, L. ., & Li, H. . (2023). Research on Hydro-pneumatic Suspension Test Bench Based on Electro-hydraulic Proportional Control. International Journal of Fluid Power, 24(03), 537–566. https://doi.org/10.13052/ijfp1439-9776.2436

Issue

2023: Vol 24 Iss 3

Section

ICFPMCE 2022