Design,simulation,and experimental research of a new electromagnetic linear power feeding semi-active suspension

To address the issue of active suspensions requiring additional energy sources and the low vibration energy recovery efficiency of semi-active suspensions, this paper proposes a new electromagnetic linear power-feeding semi-active suspension and verifies its energy recovery efficiency. The study is carried out from four aspects: theoretical research, simulation model establishment, prototype assembly, and experimental data analysis. The results show that under a 1 Hz, 120 mm vibration input, the simulation recovery voltage peak of the Electromagnetic Linear Actuation-Energy Reclaiming Device (ELA-ERD) reaches 80.7 V, and the average power feeding in the simulation is 89.8 W. The performance test of the physical ELA-ERD is carried out using a damper comprehensive performance test bench paired with the Dspace testing system, under the same 1 Hz, 120 mm input. The test recovery voltage peak reaches 66.2 V, and the average power feeding is 73.6 W, the energy recovery effect has been enhanced by 75%, which means the experimental power feeding effect reaches 82% of the simulation result. The electromagnetic linear power-feeding semi-active suspension can effectively improve the low vibration energy recovery efficiency of semi-active suspensions, providing important technical support for the improvement of vehicle suspension performance.