Electric Hydraulic Power Steering System Simulation Study

Abstract:

Properly controlling electro hydraulic power steering system can improve steering performance. The relation of motor speed, vehicle speed and steering speed is gained, according to the influence of motor speed on the steering performance. The force and angle input is set in the driver input model. Rotary valve is simulated by four orifices. The steering resistance between tire and ground is simulated by the coulomb friction on two tips of the rack. The method of double closed-loops PID is used to control the motor. The influence of the control strategy on the steering performance is realized by the simulations of three typical situation, which includes steering portability, road feel, the speed of assist force response and its stability. The results of simulation validate the availability of the control strategy, which is the basic of optimization.

• Periodical: Applied Mechanics and Materials (Volumes 373-375)
• Pages: 154-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.373-375.154
• Online since: August 2013
• Authors: Jun Wang, Li Chao Xu
• Keywords: AMESim Software, Electric Hydraulic Power Steering, Simulation, Steering Performance

References

[1] He Ren, Li Qiang. Current status and development tendency of automobile linear control technology [J]. Journal of Traffic and Transportation Engineering, 2005, 6：68-72. (In Chinese).

[2] Vladimir V Kokotovic, John Grabowski, Viral Amin, et al. Electro Hydraulic Power Steering System[J]. SAE Paper 1999-01-0404.

DOI: 10.4271/1999-01-0404

[3] Shigeru Iga, Akihiko Sakazaki, Naoki Shibata. Motor Driven Power Steering--For the Maximum Steering Sensation in Every Driving Situation[J]. SAE Paper 880705.

DOI: 10.4271/880705

[4] James E Forbes, Steven M. Baird, Thomas W Weisgerber. Electrohydraulic Power Steering-an advanced system for unique applications[J]. SAE Paper 870574.

DOI: 10.4271/870574

[5] Yoshiharu Inaguma, Keiji Suzuki, Kyosuke Haga. An energy saving technique in an electro-hydraulic power steering(EHPS) system[J] . SAE Paper 960934.

DOI: 10.4271/960934

[6] Geoffrey P Dyer, Analysis of Energy Consumption for Various Power Assisted Steering Systems[J] . SAE Paper 970379.

[7] Peter E Pfefer, D Niqel Johnston, Matijia Sokola, Manfed Harrer. Energy Consumption of Electro-Hydraulic Steering Systems. [J]. SAE Paper NO. 2005-01-1262.

DOI: 10.4271/2005-01-1262

[8] Yu Zhisheng, Vehicle Theory. Machinery Industry Press, 2006 ( In Chinese).