A semi-active suspension control algorithm for vehicle comprehensive vertical dynamics performance. Issue 8 (3rd August 2017)

• Record Type: Journal Article
• Authors: Nie, Shida; Zhuang, Ye; Liu, Weiping; Chen, Fan
• Is Part Of: Vehicle system dynamics. Volume 55:Issue 8(2017:Aug.)
• Page Start: 1099
• Page End: 1122
• Publication Date: 2017-08-03
• Subjects: Semi-active control -- frequency selector -- performance balance -- ride qualities -- road-holding; Motor vehicles -- Dynamics -- Periodicals; Electronic journals; 629.231
• DOI: 10.1080/00423114.2017.1299871
• Languages: English
• ISSNs: 0042-3114

Abstract

ABSTRACT: Comprehensive performance of the vehicle, including ride qualities and road-holding, is essentially of great value in practice. Many up-to-date semi-active control algorithms improve vehicle dynamics performance effectively. However, it is hard to improve comprehensive performance for the conflict between ride qualities and road-holding around the second-order resonance. Hence, a new control algorithm is proposed to achieve a good trade-off between ride qualities and road-holding. In this paper, the properties of the invariant points are analysed, which gives an insight into the performance conflicting around the second-order resonance. Based on it, a new control algorithm is proposed. The algorithm employs a novel frequency selector to balance suspension ride and handling performance by adopting a medium damping around the second-order resonance. The results of this study show that the proposed control algorithm could improve the performance of ride qualities and suspension working space up to 18.3% and 8.2%, respectively, with little loss of road-holding compared to the passive suspension. Consequently, the comprehensive performance can be improved by 6.6%. Hence, the proposed algorithm is of great potential to be implemented in practice.