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.
| Original language | English |
|---|---|
| Pages (from-to) | 1099-1122 |
| Number of pages | 24 |
| Journal | Vehicle System Dynamics |
| Volume | 55 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 3 Aug 2017 |
| Externally published | Yes |
Keywords
- Semi-active control
- frequency selector
- performance balance
- ride qualities
- road-holding