Influence of Electric Assistance Steering System on Vehicle Body Rolling Stability | ||||
| Engineering Research Journal (Shoubra) | ||||
| Volume 49, Issue 1, July 2021, Page 80-97 PDF (1.76 MB) | ||||
| Document Type: Research articles | ||||
| DOI: 10.21608/erjsh.2021.227496 | ||||
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| Authors | ||||
| Nadia A. Mohamed1; Mohamed M. Abdel-Hafiz2; Hassan H. Dadoura Hassan H. Dadoura2 | ||||
| 1Research student Dept. of Automotive and Tractors Eng. ; Faculty of Engineering-Mataria, Helwan Uni. | ||||
| 2Dept. of Automotive and Tractors Eng. ; Faculty of Engineering-Mataria, Helwan Uni. | ||||
| Abstract | ||||
| This research is projected to analyze the steering system dynamic characteristics and vehicle body rolling stability of conventional and electric power assisted steering have been performed to deduce the relation between steering system performance and vehicle body roll stability for different operating conditions. Eight degrees of freedom model for rack and pinion steering system has been used for conventional and electric power assisted on the column steering system with PD control, and their effect on the vehicle stability of its lateral, yaw, and body roll motion specially. The model has been excited through unit torque on the steering hand wheel. A response comparison has been performed between the two steering systems. The results analysis illustrated that the electric power assisted steering with PD controller generates quieter response dynamics at high frequency response in all steering model elements than that unassisted system. The vehicle body roll torque of the assisted steering has smoother response within comfortable ride frequency range and low signal magnitude within 65% to 70% of those values of the unassisted system as a damping effect of the steering electric motor. Consequently, this assisted steering system is safer for the vehicle lateral stability response, good ride comfort, and longer service life of the steering mechanism and suspension system elements under quitter response of assisted electric motor damping effect. | ||||
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