Research on Advanced Vehicle Cabin Suspension Control System
Efficiently solving the balance between ride performance, energy consumption, and stability in commercial vehicles is important. Except for the trade-off between handling stability and ride comfort, huge energy consumption remains a challenge for traditional suspension systems and interconnected technologies. Research shows that cabin systems are more suitable for implementing different isolation techniques to increase ride comfort, as the cabin directly affects the vehicle and occupant dynamics. Electromagnetic systems in cabin suspension have emerged as a promising solution due to their lower energy consumption and cost-effectiveness. An electrically interconnected suspension (EIS) system with external electrical network (EN) uses mechanical-electrical analogies to solve the problem of complex circuits and cost consumption in traditional suspensions. A full-car EIS system with a 4-port EN has been proposed and optimized using genetic algorithm (GA) technology, which aims to enhance the ride comfort of the cabin. The thesis utilizes GA to optimize variable resistance parameters within the electrical network of the EIS system, aiming to achieve superior performance across multiple road conditions.
Moreover, the thesis emphasizes the importance of verifying theoretical optimizations in actual tests. A Hardware-in-the-Loop (HiL) test platform is developed to evaluate the effectiveness of the optimized EIS cabin system accurately. Experimental results demonstrate the efficacy of the optimized EIS system in improving ride comfort and stability under various driving conditions. Comparison between the optimized EIS system and conventional passive suspension systems indicates that the ride comfort performance with the optimized EIS system in practical application has been significantly improved. Specifically, when the vehicle is driving at 50đđ/â, the cabin acceleration in the three motions of the cabin is decreased by 7.43%, 8.97%, and 18.56%, respectively; At a medium speed of 70đđ/â, these reductions become 8.70%, 31.14%, and 36.65%, correspondingly. Finally, at a high speed of 100đđ/â, the respective reductions amount to 17.33%, 23.65%, and 47.30%. It can be concluded that the EIS cabin system demonstrates good performance in terms of ride comfort after testing on the HiL experimental platform, enhancing the practicality of future research.
History
Year
2024Thesis type
- Masters thesis