Vehicle interconnected suspension system based on hydraulic electromagnetic energy harvest: Design, modeling and simulation tests

To integrate the energy-recovery characteristic of the Hydraulic electromagnetic shock absorber (HESA) and the anti-roll characteristic and anti-pitch characteristic of Hydraulic Interconnected Suspension(HIS), a Hydraulic Interconnected Suspension system based on Hydraulic Electromagnetic Shock Absorber (HESA-HIS) is presented. HESA-HIS has three operating modes: energy-recovery priority mode, dynamic performance priority mode and energy-recovery and dynamic performance balance mode. The working principle of HESA-HIS in the three operating modes is introduced, a full vehicle model is built by using the software AMESim, and some simulation tests are conducted by using the vehicle model. The simulation results show that the system can effectively reduce the roll angle of the vehicle, while maintaining good ride performance. Fishhook test results show that the roll angle of the HESA-HIS vehicle is reduced by 80%, compared to the traditional vehicle. Sinusoidal excitation tests show that HESA-HIS system can improve the ride performance to a certain extent by switching the operating modes. Especially in low frequency zone, the HESA-HIS system can not only improve the ride performance, but also regenerate a great deal of energy. It can regenerate the power as 3800watts, when subjected to a sinusoidal excitation with 1Hz in frequency and 50mm in amplitude.