Investigation of Semi-Active Hydro-Pneumatic Suspension for a Heavy Vehicle Based on Electro-Hydraulic Proportional Valve

• 作者: Shoucheng Li Wenchao Yue Xiaojun Zou
• 来源期刊: 世界工程和技术(英文)
• 学科: 交通运输
• 关键词: Hydro-Pneumatic SUSPENSION SEMI-ACTIVE Control CO-SIMULATION ELECTRO-HYDRAULIC Proportional VALVE
• 年，卷（期）: 2017,（4）
• 页码范围: 696-706
• 页数: 11页
• 分类号: U4

摘要

Hydro-pneumatic suspension is widely used in heavy vehicles due to its nonlinear characteristics of stiffness and damping. However, the conventional passive hydro-pneumatic suspension can’t adjust parameters according to the complicated road environment of heavy vehicles to fulfill the requirements of the vehicle ride comfort. In this paper, a semi-active hydro-pneumatic suspension system based on the electro-hydraulic proportional valve control is proposed, and fuzzy control is used as the control strategy to adjust the?damping force of the semi-active hydro-pneumatic suspension. A 1/4?semi-active hydro-pneumatic suspension model is established, which is co-simulated with AMESim and MATLAB/Simulink. The co-simulation results show that the semi-active hydro-pneumatic suspension system can significantly reduce vibration of the vehicle body, and improve the suspension performance comparing with passive hydro-pneumatic suspension.