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Outline
In response to the problem of roll instability of a certain type of sedan under high-speed emergency steering conditions, the paper designed anti-roll control models based on Proportional-Integral-Derivative (PID) control and Sliding Mode Control (SMC) using the vehicle dynamics simulation software CarSim. The controllers generate anti-roll moments through active suspension forces and distribute the anti-roll moments between the front and rear axles according to the vehicle's center of mass position. At the same time, a co-simulation platform based on CarSim and Simulink is established to compare and analyze key indicators such as vehicle roll angle, the relationship curve between roll angle and lateral acceleration, and the Lateral Load Transfer Ratio (LTR) under three typical working conditions: double lane change, steering step input and steady-state cornering. The results show that the vehicle can still maintain good roll stability during high-speed sharp turns under the control of anti-roll moments. In addition, considering the current trend of active suspensions/stabilizer bars towards high actuation forces, the influence of counter-roll moments on vehicle roll stability was analyzed. The study found that compared to anti-roll control, counter-roll control can not only significantly reduce the vehicle's LTR but also effectively change the vehicle's roll-steer characteristics.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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